Schedule of Investments  (unaudited)  March 31, 2020 BlackRock Core Bond Trust (BHK) (Percentages shown are based on Net Assets)

Security		Par (000)		Value
Asset-Backed Securities — 5.5%
ALM XVI Ltd./ALM XVI LLC, Series 2015-16A, Class CR2, (3 mo. LIBOR US + 2.70%), 4.53%, 07/15/27(a)(b)	USD		2,080	$	1,620,701
Anchorage Capital CLO Ltd.(a)(b):
Series 2013-1A, Class CR, (3 mo. LIBOR US + 3.20%), 5.05%, 10/13/30			720		529,973
Series 2016-8A, Class DR, (3 mo. LIBOR US + 3.00%), 4.80%, 07/28/28			1,000		760,093
Battalion CLO X Ltd., Series 2016-10A, Class CR, (3 mo. LIBOR US + 3.45%), 5.25%, 01/24/29(a)(b)			1,000		771,071
Benefit Street Partners CLO X Ltd., Series 2016-10A, Class CR, (3 mo. LIBOR US + 3.50%), 5.33%, 01/15/29(a)(b)			815		631,518
BlueMountain CLO XXVI Ltd., Series 2019-26A, Class E, (3 mo. LIBOR US + 7.70%), 9.53%, 10/20/32(a)(b)			250		168,443
Bowman Park CLO Ltd., Series 2014-1A, Class D2R, (3 mo. LIBOR US + 3.35%), 5.03%, 11/23/25(a)(b)			3,000		2,406,162
Carlyle Global Market Strategies CLO Ltd., Series 2013-1A, Class CR, (3 mo. LIBOR US + 3.35%), 5.05%, 08/14/30(a)(b)			1,000		746,976
CarVal CLO II Ltd., Series 2019-1A(a)(b):
Class D, (3 mo. LIBOR US + 4.15%), 5.97%, 04/20/32			500		371,393
Class E, (3 mo. LIBOR US + 6.75%), 8.57%, 04/20/32			400		239,915
CarVal CLO III Ltd., Series 2019-2A, Class E, (3 mo. LIBOR US + 6.44%), 8.26%, 07/20/32(a)(b)			500		275,499
CarVal CLO Ltd., Series 2018-1A, Class E, 7.61%, 07/16/31(a)(c)			500		277,441
CIFC Funding Ltd.(a)(b):
Series 2014-4RA, Class A1A, (3 mo. LIBOR US + 1.13%), 2.97%, 10/17/30			1,000		948,907
Series 2015-1A, Class ARR, (3 mo. LIBOR US + 1.11%), 2.91%, 01/22/31			1,000		921,885
Series 2015-5A, Class A1R, (3 mo. LIBOR US + 0.86%), 2.65%, 10/25/27			1,000		939,901
Countrywide Asset-Backed Certificates, Series 2006-13, Class 3AV2, (1 mo. LIBOR US + 0.15%), 1.10%, 01/25/37(b)			13		13,248

Security		Par (000)		Value
Asset-Backed Securities (continued)
Credit Acceptance Auto Loan Trust, Series 2020-1A, Class A, 2.01%, 02/15/29(a)	USD		2,000	$	1,855,476
Dryden 64 CLO Ltd., Series 2018-64A, Class D, (3 mo. LIBOR US + 2.65%), 4.47%, 04/18/31(a)(b)			1,250		854,992
Dryden Senior Loan Fund, Series 2015-41A, Class AR, (3 mo. LIBOR US + 0.97%), 2.80%, 04/15/31(a)(b)			2,550		2,347,351
Dryden XXVIII Senior Loan Fund, Series 2013-28A, Class B1LR, (3 mo. LIBOR US + 3.15%), 4.84%, 08/15/30(a)(b)			1,000		805,913
Eaton Vance Clo Ltd., Series 2015-1A, Class A2R, (3 mo. LIBOR US + 1.25%), 3.07%, 01/20/30(a)(b)			1,000		915,803
Elmwood CLO III Ltd., Series 2019-3A, Class E, (3 mo. LIBOR US + 7.00%), 8.83%, 10/15/32(a)(b)			1,500		956,096
Galaxy CLO XXIX Ltd., Series 2018-29A, Class D, (3 mo. LIBOR US + 2.40%), 4.09%, 11/15/26(a)(b)			805		584,550
Highbridge Loan Management, Series 3A-2014, Class CR, (3 mo. LIBOR US + 3.60%), 5.42%, 07/18/29(a)(b)			1,000		750,492
Limerock CLO III LLC, Series 2014-3A, Class C, (3 mo. LIBOR US + 3.60%), 5.42%, 10/20/26(a)(b)			3,750		3,000,221
Madison Park Funding X Ltd., Series 2012-10A, Class ER2, (3 mo. LIBOR US + 6.40%), 8.22%, 01/20/29(a)(b)			250		173,744
Madison Park Funding XV Ltd., Series 2014-15A, Class B1R, (3 mo. LIBOR US + 2.20%), 3.99%, 01/27/26(a)(b)			1,800		1,495,029
Nelnet Student Loan Trust, Series 2006-1, Class A5, (3 mo. LIBOR US + 0.11%), 1.79%, 08/23/27(b)			115		115,098
Neuberger Berman CLO XV, Series 2013-15A, Class DR, (3 mo. LIBOR US + 3.05%), 4.88%, 10/15/29(a)(b)			1,000		721,871
OCP CLO Ltd., Series 2017-13A, Class A1A, (3 mo. LIBOR US + 1.26%), 3.09%, 07/15/30(a)(b)			1,000		942,376
Octagon Investment Partners XXII Ltd., Series 2014-1A, Class DRR, (3 mo. LIBOR US + 2.75%), 4.55%, 01/22/30(a)(b)			500		353,333
OHA Credit Partners VII Ltd., Series 2012-7A, Class DR, (3 mo. LIBOR US + 4.20%), 5.89%, 11/20/27(a)(b)			1,160		927,991
OHA Credit Partners XIII Ltd., Series 2016-13A, Class E, (3 mo. LIBOR US + 7.15%), 8.97%, 01/21/30(a)(b)			595		406,553

1

Schedule of Investments  (unaudited) (continued) March 31, 2020 BlackRock Core Bond Trust (BHK) (Percentages shown are based on Net Assets)

Security		Par (000)		Value
Asset-Backed Securities (continued)
OZLM Funding III Ltd., Series 2013-3A, Class BRR, (3 mo. LIBOR US + 2.70%), 4.50%, 01/22/29(a)(b)	USD		1,500	$	1,234,438
OZLM VIII Ltd., Series 2014-8A, Class CRR, (3 mo. LIBOR US + 3.15%), 4.99%, 10/17/29(a)(b)			875		654,149
OZLM XIV Ltd., Series 2015-14A, Class CR, (3 mo. LIBOR US + 3.00%), 4.83%, 01/15/29(a)(b)			1,000		746,914
OZLM XXI, Series 2017-21A, Class C, (3 mo. LIBOR US + 2.67%), 4.49%, 01/20/31(a)(b)			1,000		690,586
Palmer Square CLO Ltd., Series 2015-2A, Class CR2, (3 mo. LIBOR US + 2.75%), 4.57%, 07/20/30(a)(b)			250		174,931
Palmer Square Loan Funding Ltd.(a)(b):
Series 2018-5A, Class D, (3 mo. LIBOR US + 4.25%), 6.07%, 01/20/27			1,000		696,594
Series 2019-3A, Class C, (3 mo. LIBOR US + 3.40%), 5.09%, 08/20/27			750		604,253
Series 2019-4A, Class C, (3 mo. LIBOR US + 3.25%), 5.05%, 10/24/27			250		201,313
Regatta VI Funding Ltd., Series 2016-1A, Class ER, (3 mo. LIBOR US + 5.00%), 6.82%, 07/20/28(a)(b)			250		155,342
Rockford Tower CLO Ltd., Series 2017-1A, Class DR, (3 mo. LIBOR US + 2.65%), 4.36%, 04/15/29(a)(b)			1,750		1,280,206
SLM Private Education Loan Trust, Series 2014-A, Class B, 3.50%, 11/15/44(a)			500		506,543
Sound Point CLO XIV Ltd., Series 2016-3A, Class D, (3 mo. LIBOR US + 3.85%), 5.66%, 01/23/29(a)(b)			1,550		1,221,414
Sterling Coofs Trust(a)(d):
Series 2004-1, Class A, 2.36%, 04/15/29			1,806		62,651
Series 2004-2, Class Note, 2.08%, 03/30/30			1,593		52,783
Structured Asset Securities Corp., Series 2002-AL1, Class A2, 3.45%, 02/25/32			278		261,080
TCI-Flatiron CLO Ltd., Series 2016-1A, Class DR, 5.64%, 07/17/28(a)(c)			635		500,844
TICP CLO VI Ltd., Series 2016-5A, Class ER, (3 mo. LIBOR US + 5.75%), 7.59%, 07/17/31(a)(b)			537		288,387
TICP CLO X Ltd., Series 2018-10A, Class E, (3 mo. LIBOR US + 5.50%), 7.32%, 04/20/31(a)(b)			250		144,395

Security		Par (000)		Value
Asset-Backed Securities (continued)
TRESTLES CLO II Ltd., Series 2017-1A, Class C, (3 mo. LIBOR US + 3.65%), 5.44%, 07/25/29(a)(b)	USD		250	$	189,686
Voya CLO Ltd.(a):
Series 2017-3A, Class C, (3 mo. LIBOR US + 3.55%), 5.37%, 07/20/30(b)			1,000		738,746
Series 2018-2A, Class A2, 3.08%, 07/15/31(c)			1,000		914,396
Westcott Park CLO Ltd., Series 2016-1A, Class DR, (3 mo. LIBOR US + 3.25%), 5.07%, 07/20/28(a)(b)			1,185		912,960
York CLO Ltd.(a)(b):
Series 2016-1A, Class DR, (3 mo. LIBOR US + 3.60%), 5.42%, 10/20/29			1,750		1,339,583
Series 2016-2A, Class DR, (3 mo. LIBOR US + 3.15%), 4.15%, 04/20/32			1,500		1,500,000
Total Asset-Backed Securities — 5.5% (Cost — $53,687,007)					43,902,209
Corporate Bonds — 61.1%
Aerospace & Defense — 1.5%
Amsted Industries, Inc., 5.63%, 07/01/27(a)			95		92,427
Arconic, Inc., 5.13%, 10/01/24			680		671,500
Bombardier, Inc.(a):
8.75%, 12/01/21			369		306,731
5.75%, 03/15/22			62		46,965
6.00%, 10/15/22			6		4,500
6.13%, 01/15/23			204		143,820
7.50%, 12/01/24			82		55,350
7.50%, 03/15/25			134		95,743
7.88%, 04/15/27			806		537,884
Eaton Corp., 4.15%, 11/02/42			500		553,649
Global Aircraft Leasing Co. Ltd., (6.5% Cash or 7.25% PIK), 6.50%, 09/15/24(a)(e)			260		166,642
Kratos Defense & Security Solutions, Inc., 6.50%, 11/30/25(a)			371		339,465
Lockheed Martin Corp., 4.09%, 09/15/52			1,410		1,694,195
Moog, Inc., 4.25%, 12/15/27(a)			195		175,988
Signature Aviation US Holdings, Inc.(a):
5.38%, 05/01/26			72		69,660
4.00%, 03/01/28			240		216,672
Sotheby’s, 7.38%, 10/15/27(a)			265		211,006
TransDigm UK Holdings PLC, 6.88%, 05/15/26			400		372,000
TransDigm, Inc., 6.25%, 03/15/26(a)			3,574		3,560,597
United Technologies Corp., 6.13%, 07/15/38			1,450		2,083,713

2

Schedule of Investments  (unaudited) (continued) March 31, 2020 BlackRock Core Bond Trust (BHK) (Percentages shown are based on Net Assets)

Security		Par (000)		Value
Aerospace & Defense (continued)
Wolverine Escrow LLC(a):
8.50%, 11/15/24	USD		164	$	130,788
9.00%, 11/15/26			280		227,500
					11,756,795
Air Freight & Logistics — 0.2%
FedEx Corp., 4.75%, 11/15/45			1,250		1,197,834
XPO Logistics, Inc., 6.75%, 08/15/24(a)			11		10,756
					1,208,590
Airlines — 1.5%
Air Canada Pass-Through Trust, Series 2015-1, Class B, 3.88%, 09/15/24(a)			1,325		1,233,215
American Airlines Pass-Through Trust:
Series 2013-2, Class A, 4.95%, 07/15/24			2,223		2,258,888
Series 2015-2, Class A, 4.00%, 03/22/29			1,216		1,122,533
Series 2015-2, Class AA, 3.60%, 03/22/29			1,216		1,143,316
Series 2017-1, Class B, 4.95%, 08/15/26			1,428		1,234,957
Avianca Holdings SA, 9.00%, 05/10/23(a)			302		63,797
Gol Finance SA, 7.00%, 01/31/25(a)			200		85,000
Latam Finance Ltd., 6.88%, 04/11/24(a)			257		114,249
United Airlines Pass-Through Trust:
Series 2013-1, Class A, 4.30%, 02/15/27			2,911		2,910,263
Series 2014-2, Class B, 4.63%, 03/03/24			1,597		1,494,554
					11,660,772
Auto Components — 0.4%
Allison Transmission, Inc., 5.88%, 06/01/29(a)			343		322,420
Aptiv PLC, 4.40%, 10/01/46			465		357,600
Dealer Tire LLC/DT Issuer LLC, 8.00%, 02/01/28(a)			176		140,800
Icahn Enterprises LP/Icahn Enterprises Finance Corp.:
6.25%, 02/01/22			58		58,145
6.75%, 02/01/24			34		32,810
4.75%, 09/15/24			73		67,139
6.38%, 12/15/25			83		78,435
6.25%, 05/15/26			174		164,430
5.25%, 05/15/27			310		286,362
Panther BF Aggregator 2 LP/Panther Finance Co., Inc.(a):
6.25%, 05/15/26			817		772,065
8.50%, 05/15/27			1,081		943,064
Tesla, Inc., 5.30%, 08/15/25(a)			183		171,563
					3,394,833

Security		Par (000)		Value
Automobiles — 0.4%
Ford Motor Co., 4.75%, 01/15/43	USD		2,000	$	1,135,000
General Motors Co., 6.25%, 10/02/43			2,506		1,978,989
					3,113,989
Banks — 1.9%
Al Ahli Bank of Kuwait KSCP, (5 year USD Swap + 4.17%), 7.25%(f)(g)			200		168,500
Banca Monte dei Paschi di Siena SpA, 2.63%, 04/28/25	EUR		100		91,537
Bancolombia SA, (5 year CMT + 2.94%), 4.63%, 12/18/29(f)	USD		200		176,250
Bank Leumi Le-Israel BM, (5 year CMT + 1.63%), 3.28%, 01/29/31(a)(f)			281		257,817
Bank Tabungan Negara Persero Tbk PT, 4.20%, 01/23/25			200		171,000
Barclays PLC:
4.38%, 09/11/24			550		548,072
3.65%, 03/16/25			4,320		4,224,921
BBVA Bancomer SA, 6.75%, 09/30/22(a)			236		234,283
Chong Hing Bank Ltd., (5 year CMT + 3.86%), 5.70%(f)(g)			250		212,891
CIT Group, Inc., 5.00%, 08/01/23			237		228,020
Cooperatieve Rabobank UA, 3.95%, 11/09/22			1,500		1,514,111
Emirates NBD Bank PJSC, (6 year USD Swap + 3.66%), 6.13%(f)(g)			250		211,094
HSBC Holdings PLC, 6.10%, 01/14/42			610		758,184
Santander Holdings USA, Inc., 4.50%, 07/17/25			2,000		2,040,414
Santander UK Group Holdings PLC, 2.88%, 08/05/21			1,250		1,234,587
Standard Chartered PLC, (5 year USD ICE Swap + 1.97%), 4.87%, 03/15/33(a)(f)			500		515,651
Wells Fargo & Co., 3.90%, 05/01/45			2,250		2,451,275
					15,038,607
Beverages — 0.7%
Anheuser-Busch Cos. LLC/Anheuser-Busch InBev Worldwide, Inc., 4.90%, 02/01/46			4,600		5,010,154
Central American Bottling Corp., 5.75%, 01/31/27(a)			222		189,481
Crown Cork & Seal Co., Inc., 7.38%, 12/15/26			23		23,575
					5,223,210
Biotechnology — 0.6%
Amgen, Inc., 4.40%, 05/01/45			2,250		2,641,203

3

Schedule of Investments  (unaudited) (continued) March 31, 2020 BlackRock Core Bond Trust (BHK) (Percentages shown are based on Net Assets)

Security		Par (000)		Value
Biotechnology (continued)
Baxalta, Inc., 5.25%, 06/23/45	USD		500	$	627,953
Gilead Sciences, Inc., 4.80%, 04/01/44			1,000		1,282,847
					4,552,003
Building Materials — 0.0%
CEMEX Finance LLC, 4.63%, 06/15/24	EUR		100		105,051
Building Products — 0.1%
Advanced Drainage Systems, Inc., 5.00%, 09/30/27(a)	USD		162		144,180
Beacon Roofing Supply, Inc.(a):
4.88%, 11/01/25			10		9,025
4.50%, 11/15/26			56		51,677
CPG Merger Sub LLC, 8.00%, 10/01/21(a)			220		213,488
Jeld-Wen, Inc.(a):
4.63%, 12/15/25			93		81,840
4.88%, 12/15/27			21		18,532
Masonite International Corp.(a):
5.75%, 09/15/26			52		50,960
5.38%, 02/01/28			29		28,501
Standard Industries, Inc.(a):
5.50%, 02/15/23			5		4,825
5.38%, 11/15/24			183		176,595
6.00%, 10/15/25			207		203,440
5.00%, 02/15/27			48		43,680
4.75%, 01/15/28			54		49,731
					1,076,474
Capital Markets — 2.8%
CDP Financial, Inc., 5.60%, 11/25/39(a)			5,890		8,527,029
CFLD Cayman Investment Ltd., 6.90%, 01/13/23			200		163,834
Goldman Sachs Group, Inc.:
3.75%, 05/22/25			8,965		9,280,112
Series R, (5 year CMT + 3.22%), 4.95%(f)(g)			465		413,850
Intercorp Peru Ltd., 3.88%, 08/15/29(a)			200		171,719
Intertrust Group BV, 3.38%, 11/15/25	EUR		100		104,996
LABL Escrow Issuer LLC, 6.75%, 07/15/26(a)	USD		266		244,720
Morgan Stanley:
4.00%, 07/23/25			905		953,921
3.13%, 07/27/26			2,000		2,050,934
Owl Rock Capital Corp., 5.25%, 04/15/24			56		54,318
Raymond James Financial, Inc., 4.95%, 07/15/46			400		460,154
Stevens Holding Co., Inc., 6.13%, 10/01/26(a)			90		88,912
					22,514,499

Security		Par (000)		Value
Chemicals — 0.7%
Air Liquide Finance SA, 3.50%, 09/27/46(a)	USD		360	$	357,507
Ashland Services BV, 2.00%, 01/30/28	EUR		100		95,677
Atotech Alpha 2 BV, (8.75% Cash or 9.50% PIK), 8.75%, 06/01/23(a)(e)	USD		410		369,000
Atotech Alpha 3 BV/Alpha US Bidco, Inc., 6.25%, 02/01/25(a)			1,112		1,024,430
Axalta Coating Systems LLC, 4.88%, 08/15/24(a)			311		298,560
Blue Cube Spinco LLC:
9.75%, 10/15/23			263		273,191
10.00%, 10/15/25			236		249,004
Chemours Co.:
6.63%, 05/15/23			198		168,300
5.38%, 05/15/27			88		67,307
Cydsa SAB de CV, 6.25%, 10/04/27(a)			319		231,325
Element Solutions, Inc., 5.88%, 12/01/25(a)			862		844,760
ENN Clean Energy International Investment Ltd., 7.50%, 02/27/21			200		186,250
GCP Applied Technologies, Inc., 5.50%, 04/15/26(a)			101		93,930
Monitchem HoldCo 3 SA, 5.25%, 03/15/25	EUR		100		91,541
NOVA Chemicals Corp., 4.88%, 06/01/24(a)	USD		41		35,977
Orbia Advance Corp SAB de CV(a):
4.00%, 10/04/27			200		174,000
5.50%, 01/15/48			200		172,500
PQ Corp.(a):
6.75%, 11/15/22			200		201,008
5.75%, 12/15/25			309		278,100
Valvoline, Inc., 4.25%, 02/15/30(a)			178		166,857
Vedanta Resources Finance II PLC, 9.25%, 04/23/26			482		194,487
WR Grace & Co-Conn, 5.63%, 10/01/24(a)			141		138,843
Yingde Gases Investment Ltd., 6.25%, 01/19/23			200		181,500
					5,894,054
Commercial Services & Supplies — 0.9%
ADT Security Corp.:
6.25%, 10/15/21			86		84,065
3.50%, 07/15/22			33		32,175
4.13%, 06/15/23			18		17,595
4.88%, 07/15/32(a)			411		349,227

4

Schedule of Investments  (unaudited) (continued) March 31, 2020 BlackRock Core Bond Trust (BHK) (Percentages shown are based on Net Assets)

Security		Par (000)		Value
Commercial Services & Supplies (continued)
Allied Universal Holdco LLC/Allied Universal Finance Corp.(a):
6.63%, 07/15/26	USD		1,277	$	1,254,653
9.75%, 07/15/27			330		310,992
Aviation Capital Group LLC, 7.13%, 10/15/20(a)			1,800		1,779,919
Booz Allen Hamilton, Inc., 5.13%, 05/01/25(a)			441		432,180
Clean Harbors, Inc.(a):
4.88%, 07/15/27			146		142,919
5.13%, 07/15/29			109		101,370
Core & Main LP, 6.13%, 08/15/25(a)			691		642,630
Garda World Security Corp., 9.50%, 11/01/27(a)			92		82,239
GFL Environmental, Inc.(a):
5.13%, 12/15/26			292		284,700
8.50%, 05/01/27			140		140,658
Iron Mountain, Inc., 5.25%, 03/15/28(a)			77		76,061
KAR Auction Services, Inc., 5.13%, 06/01/25(a)			97		92,635
Mobile Mini, Inc., 5.88%, 07/01/24			298		285,335
Ritchie Bros Auctioneers, Inc., 5.38%, 01/15/25(a)			58		57,854
Summer BC Holdco B Sarl, 5.75%, 10/31/26	EUR		100		91,761
Tempo Acquisition LLC/Tempo Acquisition Finance Corp., 6.75%, 06/01/25(a)	USD		455		416,352
United Rentals North America, Inc.:
5.50%, 07/15/25			45		44,100
4.63%, 10/15/25			24		23,040
5.88%, 09/15/26			53		53,678
6.50%, 12/15/26			3		3,045
5.50%, 05/15/27			155		156,434
3.88%, 11/15/27			84		79,380
4.88%, 01/15/28			55		53,350
4.00%, 07/15/30			104		93,080
Vericast Corp., 8.38%, 08/15/22(a)			273		210,551
					7,391,978
Communications Equipment — 0.2%
CommScope, Inc.(a):
5.50%, 03/01/24			368		372,416
6.00%, 03/01/26			117		116,825
Gogo Intermediate Holdings LLC/Gogo Finance Co., Inc., 9.88%, 05/01/24(a)			202		159,580
Nokia OYJ:
4.38%, 06/12/27			31		30,070
6.63%, 05/15/39			295		298,835
ViaSat, Inc., 5.63%, 04/15/27(a)			449		443,387
					1,421,113

Security		Par (000)		Value
Construction & Engineering — 0.6%
Brand Industrial Services, Inc., 8.50%, 07/15/25(a)	USD		304	$	238,701
Delhi International Airport Ltd., 6.45%, 06/04/29			200		164,187
frontdoor, Inc., 6.75%, 08/15/26(a)			209		200,117
ITR Concession Co. LLC, 4.20%, 07/15/25(a)			4,000		4,236,655
SPIE SA, 2.63%, 06/18/26	EUR		100		98,323
SRS Distribution, Inc., 8.25%, 07/01/26(a)	USD		212		161,120
					5,099,103
Construction Materials — 0.3%
American Builders & Contractors Supply Co., Inc.(a):
5.88%, 05/15/26			217		206,692
4.00%, 01/15/28			248		225,680
Core & Main Holdings LP, (8.625% Cash or 9.38% PIK), 8.63%, 09/15/24(a)(e)			372		340,380
HD Supply, Inc., 5.38%, 10/15/26(a)			1,233		1,198,624
Navistar International Corp., 6.63%, 11/01/25(a)			250		208,125
New Enterprise Stone & Lime Co., Inc.(a):
10.13%, 04/01/22			94		93,765
6.25%, 03/15/26			53		48,760
PulteGroup, Inc., 6.00%, 02/15/35			27		27,203
Williams Scotsman International, Inc.(a):
7.88%, 12/15/22			70		68,285
6.88%, 08/15/23			230		209,300
					2,626,814
Consumer Discretionary — 0.1%
Dun & Bradstreet Corp., 6.88%, 08/15/26(a)			568		590,720
Nielsen Co. Luxembourg Sarl, 5.00%, 02/01/25(a)			45		41,737
Techem Verwaltungsgesellschaft 674 mbH, 6.00%, 07/30/26	EUR		100		101,467
Viking Cruises Ltd., 6.25%, 05/15/25(a)	USD		35		22,400
					756,324
Consumer Finance — 1.7%
Ally Financial, Inc., 8.00%, 11/01/31			940		1,089,178
Capital One Financial Corp., 4.75%, 07/15/21			1,935		1,991,216
Corvias Campus Living USG LLC, 5.30%, 07/01/50(d)			5,673		6,172,869

5

Schedule of Investments  (unaudited) (continued) March 31, 2020 BlackRock Core Bond Trust (BHK) (Percentages shown are based on Net Assets)

Security		Par (000)		Value
Consumer Finance (continued)
Credito Real SAB de CV SOFOM ER, 7.25%, 07/20/23	USD		200	$	156,000
Husky III Holding Ltd., (13.00% PIK), 13.00%, 02/15/25(a)(e)			273		200,513
Muthoot Finance Ltd.:
6.13%, 10/31/22(a)			247		210,413
4.40%, 09/02/23			200		155,403
Navient Corp.:
5.00%, 10/26/20			180		177,300
7.25%, 09/25/23			46		44,623
6.13%, 03/25/24			67		61,975
5.88%, 10/25/24			91		83,720
5.00%, 03/15/27			173		148,728
Refinitiv US Holdings, Inc.:
4.50%, 05/15/26	EUR		100		109,187
4.50%, 05/15/26(a)			245		267,508
6.25%, 05/15/26(a)	USD		177		182,753
8.25%, 11/15/26(a)			544		573,920
Springleaf Finance Corp.:
6.13%, 05/15/22			50		50,515
6.88%, 03/15/25			94		94,669
7.13%, 03/15/26			326		322,740
6.63%, 01/15/28			141		133,245
5.38%, 11/15/29			117		107,055
Verscend Escrow Corp., 9.75%, 08/15/26(a)			1,191		1,188,761
					13,522,291
Containers & Packaging — 0.6%
ARD Finance SA, (6.50% Cash or 7.25% PIK), 6.50%, 06/30/27(a)(e)			501		430,309
Ardagh Packaging Finance PLC/Ardagh Holdings USA, Inc.:
4.13%, 08/15/26(a)			200		199,000
4.75%, 07/15/27	GBP		100		113,342
Berry Global, Inc., 4.88%, 07/15/26(a)	USD		122		123,220
Celulosa Arauco y Constitucion SA, 4.20%, 01/29/30			200		170,937
Crown Americas LLC/Crown Americas Capital Corp. V, 4.25%, 09/30/26			298		293,530
Crown Americas LLC/Crown Americas Capital Corp. VI, 4.75%, 02/01/26			357		365,818
Graphic Packaging International LLC, 3.50%, 03/15/28(a)			78		70,177
Intertape Polymer Group, Inc., 7.00%, 10/15/26(a)			119		113,645
Mauser Packaging Solutions Holding Co., 5.50%, 04/15/24(a)			808		743,360
Reynolds Group Issuer, Inc./Reynolds Group Issuer LLC/Reynolds Group Issuer Lu(a):
5.13%, 07/15/23			147		145,530
7.00%, 07/15/24			170		172,762

Security		Par (000)		Value
Containers & Packaging (continued)
Silgan Holdings, Inc., 4.13%, 02/01/28(a)	USD		143	$	131,918
Trivium Packaging Finance BV(a):
5.50%, 08/15/26			828		823,860
8.50%, 08/15/27			1,067		1,072,335
					4,969,743
Diversified Consumer Services — 0.2%
APX Group, Inc.:
7.88%, 12/01/22			80		75,227
8.50%, 11/01/24(a)			82		74,826
Ascend Learning LLC, 6.88%, 08/01/25(a)			613		594,610
Garda World Security Corp., 4.63%, 02/15/27(a)			180		161,100
Graham Holdings Co., 5.75%, 06/01/26(a)			108		105,840
Laureate Education, Inc., 8.25%, 05/01/25(a)			72		71,640
Prime Security Services Borrower LLC/Prime Finance, Inc.(a):
5.25%, 04/15/24			49		48,402
5.75%, 04/15/26			195		191,100
Service Corp. International, 5.13%, 06/01/29			36		36,720
ServiceMaster Co. LLC, 5.13%, 11/15/24(a)			142		140,225
					1,499,690
Diversified Financial Services — 4.0%
Alpha Holding SA de CV, 9.00%, 02/10/25(a)			225		150,750
Altice France Holding SA:
8.00%, 05/15/27	EUR		100		123,324
8.00%, 05/15/27(h)			100		108,273
10.50%, 05/15/27(a)	USD		1,088		1,147,840
6.00%, 02/15/28(a)			257		226,078
Arrow Global Finance PLC, 5.13%, 09/15/24	GBP		100		106,821
ASG Finance Designated Activity Co., 7.88%, 12/03/24(a)	USD		200		73,850
Bank of America Corp.:
5.63%, 07/01/20			2,200		2,213,801
3.25%, 10/21/27			4,000		4,098,058
CFLD Cayman Investment Ltd.:
8.63%, 02/28/21			400		386,000
8.60%, 04/08/24			200		161,375
Citigroup, Inc., Series V, (Secured Overnight Financing Rate + 3.23%), 4.70%(f)(g)			410		351,206
F-Brasile SpA/F-Brasile US LLC, Series XR, 7.38%, 08/15/26(a)			200		199,000
FMR LLC, 4.95%, 02/01/33			2,300		2,612,181

6

Schedule of Investments  (unaudited) (continued) March 31, 2020 BlackRock Core Bond Trust (BHK) (Percentages shown are based on Net Assets)

Security		Par (000)		Value
Diversified Financial Services (continued)
Ford Motor Credit Co. LLC:
3.81%, 01/09/24	USD		200	$	181,000
4.13%, 08/04/25			279		247,473
General Electric Co., 6.15%, 08/07/37			2,150		2,451,863
General Motors Financial Co., Inc., 4.25%, 05/15/23			807		729,768
Gilex Holding Sarl, 8.50%, 05/02/23(a)			182		154,791
Greenko Dutch BV, 5.25%, 07/24/24			200		160,464
Greenko Mauritius Ltd., 6.25%, 02/21/23			200		176,448
Intercontinental Exchange, Inc., 4.00%, 10/15/23			470		492,365
Intesa Sanpaolo SpA, 5.02%, 06/26/24(a)			3,151		3,086,398
Intrum AB, 3.00%, 09/15/27	EUR		100		77,887
LHC3 PLC, (4.13% Cash or 4.88% PIK), 4.13%, 08/15/24(e)			100		91,680
Lloyds Banking Group PLC(5 year CMT + 4.82%), 6.75%(f)(g)	USD		595		489,387
Manappuram Finance Ltd., 5.90%, 01/13/23			200		144,000
Mong Doung Finacial Holdings BV, 5.13%, 05/07/29			250		208,081
Moody’s Corp., 4.50%, 09/01/22			1,800		1,845,131
Murphy Oil USA, Inc., 4.75%, 09/15/29			106		99,375
Northern Trust Corp., 3.95%, 10/30/25			8,000		8,182,625
Scenery Journey Ltd.:
11.00%, 11/06/20			200		190,625
11.50%, 10/24/22			219		163,411
13.00%, 11/06/22			200		154,841
Spectrum Brands, Inc., 5.00%, 10/01/29(a)			68		57,800
VZ Vendor Financing BV, 2.50%, 01/31/24	EUR		100		103,893
Wanda Group Overseas Ltd., 7.50%, 07/24/22	USD		200		176,150
WMG Acquisition Corp., 5.50%, 04/15/26(a)			84		82,110
					31,706,123
Diversified Telecommunication Services — 3.6%
AT&T, Inc.:
6.10%, 07/15/40			830		1,045,914
6.38%, 03/01/41			520		653,527
5.15%, 03/15/42			2,400		2,759,045
4.75%, 05/15/46			2,710		2,997,044
Axtel SAB de CV, 6.38%, 11/14/24(a)			200		159,104
CenturyLink, Inc.:
5.13%, 12/15/26(a)			572		572,000
4.00%, 02/15/27(a)			313		303,610
Series P, 7.60%, 09/15/39			213		206,610
Series U, 7.65%, 03/15/42			274		265,780
Series W, 6.75%, 12/01/23			348		369,854
Series Y, 7.50%, 04/01/24			407		445,665

Security		Par (000)		Value
Diversified Telecommunication Services (continued)
Cincinnati Bell, Inc., 7.00%, 07/15/24(a)	USD		105	$	105,656
Frontier Communications Corp., 8.00%, 04/01/27(a)			807		795,928
GCI LLC, 6.63%, 06/15/24(a)			93		92,070
Level 3 Financing, Inc.:
5.38%, 05/01/25			36		35,820
5.25%, 03/15/26			558		557,651
4.63%, 09/15/27(a)			33		32,799
OI SA, (10.00% Cash or 8.00% Cash + 4.00% PIK), 10.00%, 07/27/25(e)			220		150,150
Qwest Corp., 6.75%, 12/01/21			3		3,109
SoftBank Group Corp.:
4.00%, 04/20/23	EUR		100		101,058
5.00%, 04/15/28			100		97,232
Telecom Argentina SA, 8.00%, 07/18/26(a)	USD		170		129,838
Telecom Italia Capital SA:
6.38%, 11/15/33			74		75,110
6.00%, 09/30/34			337		333,630
7.20%, 07/18/36			60		62,100
7.72%, 06/04/38			111		117,350
Telecom Italia SpA:
4.00%, 04/11/24	EUR		100		109,722
5.30%, 05/30/24(a)	USD		200		201,012
Telecom Italia SpA/Milano, 3.00%, 09/30/25	EUR		100		104,487
Telesat Canada/Telesat LLC, 4.88%, 06/01/27(a)	USD		297		283,576
Verizon Communications, Inc.:
6.40%, 02/15/38			5,700		7,246,259
6.55%, 09/15/43			6,751		8,446,269
					28,858,979
Electric Utilities — 4.1%
Adani Green Energy UP Ltd./Prayatna Developers Pvt Ltd./Parampujya Solar Energ, 6.25%, 12/10/24			200		175,987
Cleveland Electric Illuminating Co., 5.95%, 12/15/36			434		504,330
CMS Energy Corp., 5.05%, 03/15/22			1,832		1,891,705
Duke Energy Carolinas LLC:
6.10%, 06/01/37			640		854,674
6.00%, 01/15/38			1,675		2,292,694
4.25%, 12/15/41			750		849,665
Duke Energy Florida LLC:
6.35%, 09/15/37			2,775		3,826,584
6.40%, 06/15/38			770		1,119,972
E.ON International Finance BV, 6.65%, 04/30/38(a)			3,100		4,273,900
Electricite de France SA, 5.60%, 01/27/40(a)			2,800		3,420,856
Empresas Publicas de Medellin ESP, 4.25%, 07/18/29(a)			201		168,777

7

Schedule of Investments  (unaudited) (continued) March 31, 2020 BlackRock Core Bond Trust (BHK) (Percentages shown are based on Net Assets)

Security		Par (000)		Value
Electric Utilities (continued)
Energuate Trust, 5.88%, 05/03/27(a)	USD		201	$	192,809
Inkia Energy Ltd., 5.88%, 11/09/27(a)			200		178,500
NextEra Energy Operating Partners LP(a):
4.25%, 07/15/24			309		301,275
4.25%, 09/15/24			58		56,550
4.50%, 09/15/27			27		26,325
Ohio Power Co., Series D, 6.60%, 03/01/33			3,000		4,327,533
PacifiCorp, 6.25%, 10/15/37			1,225		1,590,120
ReNew Power Synthetic, 6.67%, 03/12/24			200		159,063
Southern California Edison Co., 5.63%, 02/01/36			1,300		1,455,739
Talen Energy Supply LLC:
6.50%, 06/01/25			30		19,419
10.50%, 01/15/26(a)			30		21,600
Virginia Electric & Power Co., Series A, 6.00%, 05/15/37			3,920		5,025,862
					32,733,939
Electronic Equipment, Instruments & Components — 0.3%
CDW LLC/CDW Finance Corp., 5.00%, 09/01/25			490		504,847
Corning, Inc., 4.38%, 11/15/57			2,000		2,064,655
Itron, Inc., 5.00%, 01/15/26(a)			18		17,100
					2,586,602
Energy Equipment & Services — 0.4%
Anton Oilfield Services Group, 7.50%, 12/02/22			200		135,334
Apergy Corp., 6.38%, 05/01/26			146		112,420
Archrock Partners LP/Archrock Partners Finance Corp., 6.88%, 04/01/27(a)			182		129,238
Enterprise Products Operating LLC, 6.13%, 10/15/39			1,400		1,434,152
Gates Global LLC/Gates Global Co., 6.25%, 01/15/26(a)			200		177,000
Halliburton Co., 5.00%, 11/15/45			500		386,195
Pattern Energy Group, Inc., 5.88%, 02/01/24(a)			250		248,170
Transocean, Inc., 8.00%, 02/01/27(a)			206		97,850
USA Compression Partners LP/USA Compression Finance Corp.:
6.88%, 04/01/26			228		142,500
6.88%, 09/01/27			327		202,740
					3,065,599
Environmental, Maintenance, & Security Service — 0.1%
GFL Environmental, Inc., 7.00%, 06/01/26(a)			359		347,481
Tervita Corp., 7.63%, 12/01/21(a)			166		116,200
Waste Pro USA, Inc., 5.50%, 02/15/26(a)			296		274,629
					738,310

Security		Par (000)		Value
Equity Real Estate Investment Trusts (REITs) — 1.8%
ERP Operating LP, 4.50%, 06/01/45	USD		1,155	$	1,174,123
Five Point Operating Co. LP/Five Point Capital Corp., 7.88%, 11/15/25(a)			150		129,000
Fortune Star BVI Ltd.:
6.88%, 01/31/21			200		192,000
5.95%, 01/29/23			200		176,562
6.75%, 07/02/23			250		224,219
GLP Capital LP/GLP Financing II, Inc.:
5.25%, 06/01/25			71		65,675
5.38%, 04/15/26			98		86,867
Healthpeak Properties, Inc., 4.00%, 06/01/25			2,000		1,985,315
Hilton Domestic Operating Co., Inc., 4.25%, 09/01/24			56		52,360
Hilton Worldwide Finance LLC/Hilton Worldwide Finance Corp., 4.63%, 04/01/25			92		85,560
Iron Mountain, Inc.(a):
4.88%, 09/15/27			234		226,980
4.88%, 09/15/29			125		117,423
iStar, Inc., 5.25%, 09/15/22			17		15,683
LMIRT Capital Pte Ltd., 7.25%, 06/19/24			250		211,000
Marriott Ownership Resorts, Inc./ILG LLC, 6.50%, 09/15/26			24		20,880
MGM Growth Properties Operating Partnership LP/MGP Finance Co-Issuer, Inc.:
5.63%, 05/01/24			895		859,200
4.50%, 09/01/26			277		229,910
5.75%, 02/01/27			16		13,920
4.50%, 01/15/28			247		209,950
MPT Operating Partnership LP/MPT Finance Corp.:
5.50%, 05/01/24			30		29,175
5.00%, 10/15/27			598		580,060
4.63%, 08/01/29			375		348,750
NH Hotel Group SA, 3.75%, 10/01/23	EUR		115		104,014
Ryman Hospitality Properties, Inc., 4.75%, 10/15/27(a)	USD		351		263,250
SBA Communications Corp.:
4.88%, 09/01/24			1,110		1,125,262
3.88%, 02/15/27(a)			486		487,215
Simon Property Group LP, 4.75%, 03/15/42			1,670		1,649,941
Starwood Property Trust, Inc., 5.00%, 12/15/21			77		70,455
Trust F/1401, 6.95%, 01/30/44			476		447,440
Ventas Realty LP, 4.13%, 01/15/26			870		869,343

8

Schedule of Investments  (unaudited) (continued) March 31, 2020 BlackRock Core Bond Trust (BHK) (Percentages shown are based on Net Assets)

Security		Par (000)		Value
Equity Real Estate Investment Trusts (REITs) (continued)
VICI Properties LP/VICI Note Co., Inc.(a):
3.50%, 02/15/25	USD		261	$	243,382
4.25%, 12/01/26			800		734,000
3.75%, 02/15/27			277		261,072
4.63%, 12/01/29			320		291,962
4.13%, 08/15/30			724		677,845
					14,259,793
Food & Staples Retailing — 0.3%
Albertsons Cos., Inc./Safeway, Inc./New Albertsons LP/Albertson’s LLC:
6.63%, 06/15/24			59		59,885
5.75%, 03/15/25			15		15,156
7.50%, 03/15/26(a)			65		70,057
4.63%, 01/15/27(a)			435		432,825
5.88%, 02/15/28(a)			180		183,204
4.88%, 02/15/30(a)			167		166,582
Health & Happiness H&H International Holdings Ltd., 5.63%, 10/24/24			200		186,250
Walgreens Boots Alliance, Inc., 4.80%, 11/18/44			1,000		991,916
					2,105,875
Food Products — 0.8%
Aramark Services, Inc.:
5.00%, 04/01/25(a)			138		130,631
4.75%, 06/01/26			154		145,114
5.00%, 02/01/28(a)			343		319,203
Chobani LLC/Chobani Finance Corp., Inc., 7.50%, 04/15/25(a)			296		269,360
Darling Ingredients, Inc., 5.25%, 04/15/27(a)			15		14,546
Graphic Packaging International LLC, 4.75%, 07/15/27(a)			53		51,834
Grupo Bimbo SAB de CV(5 year CMT + 3.28%), 5.95%(a)(f)(g)			200		184,375
JBS USA LUX SA/JBS USA Finance, Inc.(a):
5.88%, 07/15/24			349		353,362
5.75%, 06/15/25			698		704,980
6.75%, 02/15/28			275		293,007
JBS USA LUX SA/JBS USA Food Co./JBS USA Finance, Inc.(a):
6.50%, 04/15/29			349		374,372
5.50%, 01/15/30			241		248,832
Kraft Heinz Foods Co.:
5.00%, 07/15/35			85		84,508
6.88%, 01/26/39			160		183,012
4.63%, 10/01/39(a)			73		65,374
6.50%, 02/09/40			110		120,029
5.00%, 06/04/42			86		81,424
5.20%, 07/15/45			239		229,773

Security		Par (000)		Value
Food Products (continued)
4.38%, 06/01/46	USD		269	$	242,320
4.88%, 10/01/49(a)			703		639,213
MARB BondCo PLC, 6.88%, 01/19/25(a)			200		178,938
MHP Lux SA, 6.25%, 09/19/29(a)			400		328,000
Minerva Luxembourg SA, 6.50%, 09/20/26(a)			200		183,500
Post Holdings, Inc.(a):
5.00%, 08/15/26			3		3,087
5.75%, 03/01/27			268		274,622
4.63%, 04/15/30			335		320,762
Simmons Foods, Inc., 7.75%, 01/15/24(a)			157		157,000
					6,181,178
Health Care Equipment & Supplies — 0.4%
Avantor, Inc.(a):
6.00%, 10/01/24			1,077		1,128,373
9.00%, 10/01/25			621		653,727
Hologic, Inc., 4.63%, 02/01/28(a)			96		96,240
Immucor, Inc., 11.13%, 02/15/22(a)			60		54,000
Ortho-Clinical Diagnostics, Inc./Ortho-Clinical Diagnostics SA(a):
6.63%, 05/15/22			298		281,610
7.25%, 02/01/28			791		680,181
Teleflex, Inc., 4.88%, 06/01/26			75		74,250
					2,968,381
Health Care Providers & Services — 1.7%
Acadia Healthcare Co., Inc., 5.13%, 07/01/22			45		42,891
Aetna, Inc., 4.50%, 05/15/42			575		598,215
AHP Health Partners, Inc., 9.75%, 07/15/26(a)			218		188,647
Centene Corp.(a):
5.25%, 04/01/25			195		195,975
5.38%, 06/01/26			210		216,323
5.38%, 08/15/26			197		200,940
4.25%, 12/15/27			404		395,920
4.63%, 12/15/29			1,123		1,128,615
3.38%, 02/15/30			308		286,440
CHS/Community Health Systems, Inc.(a):
8.63%, 01/15/24			367		362,299
6.63%, 02/15/25			172		159,100
8.00%, 03/15/26			789		749,550
Encompass Health Corp., 5.75%, 11/01/24			15		15,071
HCA, Inc.:
5.38%, 02/01/25			554		566,465
5.88%, 02/15/26			3		3,158
5.38%, 09/01/26			281		289,430

9

Schedule of Investments  (unaudited) (continued) March 31, 2020 BlackRock Core Bond Trust (BHK) (Percentages shown are based on Net Assets)

Security		Par (000)		Value
Health Care Providers & Services (continued)
5.63%, 09/01/28	USD		444	$	464,735
5.88%, 02/01/29			256		270,720
3.50%, 09/01/30			995		902,675
5.50%, 06/15/47			850		923,659
LifePoint Health, Inc., 4.38%, 02/15/27(a)			65		61,230
MEDNAX, Inc., 5.25%, 12/01/23(a)			107		87,205
Molina Healthcare, Inc.:
5.38%, 11/15/22			104		101,400
4.88%, 06/15/25(a)			110		107,250
MPH Acquisition Holdings LLC, 7.13%, 06/01/24(a)			530		461,132
Northwell Healthcare, Inc., 4.26%, 11/01/47			725		774,332
Polaris Intermediate Corp., (8.50% Cash or 9.25% PIK), 8.50%, 12/01/22(a)(e)			265		205,505
Radiology Partners, Inc., 9.25%, 02/01/28(a)			88		76,186
Surgery Center Holdings, Inc.(a):
6.75%, 07/01/25			378		272,160
10.00%, 04/15/27			182		127,400
Tenet Healthcare Corp.:
8.13%, 04/01/22			715		681,037
4.63%, 07/15/24			727		694,285
4.63%, 09/01/24(a)			219		209,758
4.88%, 01/01/26(a)			863		822,007
6.25%, 02/01/27(a)			181		176,475
5.13%, 11/01/27(a)			582		554,355
Vizient, Inc., 6.25%, 05/15/27(a)			250		243,854
					13,616,399
Health Care Technology — 0.2%
Change Healthcare Holdings LLC/Change Healthcare Finance, Inc., 5.75%, 03/01/25(a)			592		544,640
IQVIA, Inc.(a):
3.25%, 03/15/25	EUR		100		107,534
5.00%, 10/15/26	USD		280		285,600
5.00%, 05/15/27			468		478,530
					1,416,304
Hotels, Restaurants & Leisure — 1.7%
1011778 BC ULC/New Red Finance, Inc.(a):
5.00%, 10/15/25			788		752,532
3.88%, 01/15/28			271		257,450
4.38%, 01/15/28			312		288,257
Boyd Gaming Corp., 6.00%, 08/15/26			68		58,480
Boyne USA, Inc., 7.25%, 05/01/25(a)			109		104,095
Cedar Fair LP, 5.25%, 07/15/29(a)			104		87,880
Churchill Downs, Inc.(a):
5.50%, 04/01/27			495		466,622
4.75%, 01/15/28			350		304,500

Security		Par (000)		Value
Hotels, Restaurants & Leisure (continued)
CPUK Finance Ltd., 4.25%, 02/28/47	GBP		100	$	99,675
Eldorado Resorts, Inc., 6.00%, 09/15/26	USD		70		63,175
Golden Nugget, Inc., 6.75%, 10/15/24(a)			816		513,990
Hilton Domestic Operating Co., Inc.:
5.13%, 05/01/26			207		194,580
4.88%, 01/15/30			770		654,500
Hilton Worldwide Finance LLC/Hilton Worldwide Finance Corp., 4.88%, 04/01/27			84		79,800
IRB Holding Corp., 6.75%, 02/15/26(a)			59		46,487
KFC Holding Co./Pizza Hut Holdings LLC/Taco Bell of America LLC, 5.25%, 06/01/26(a)			21		20,971
Las Vegas Sands Corp.:
2.90%, 06/25/25			35		31,730
3.50%, 08/18/26			31		28,355
3.90%, 08/08/29			20		17,237
Lions Gate Capital Holdings LLC(a):
6.38%, 02/01/24			16		14,080
5.88%, 11/01/24			109		93,195
Melco Resorts Finance Ltd., 5.25%, 04/26/26			250		223,852
MGM China Holdings Ltd., 5.88%, 05/15/26			250		208,047
MGM Resorts International:
7.75%, 03/15/22			305		302,109
6.00%, 03/15/23			253		244,145
Scientific Games International, Inc.:
5.00%, 10/15/25(a)			517		449,790
3.38%, 02/15/26	EUR		100		84,967
8.25%, 03/15/26(a)	USD		446		285,489
7.00%, 05/15/28(a)			149		91,635
7.25%, 11/15/29(a)			96		60,000
Six Flags Entertainment Corp.(a):
4.88%, 07/31/24			430		364,425
5.50%, 04/15/27			19		16,008
Studio City Finance Ltd., 7.25%, 02/11/24			250		217,937
Unique Pub Finance Co. PLC:
Series A4, 5.66%, 06/30/27	GBP		816		1,114,711
Series M, 7.40%, 03/28/24			3,000		4,139,984
Series N, 6.46%, 03/30/32			100		138,906
Wyndham Destinations, Inc.:
5.40%, 04/01/24	USD		6		5,070
5.75%, 04/01/27			44		36,740
Wyndham Hotels & Resorts, Inc., 5.38%, 04/15/26(a)			130		113,100
Wynn Las Vegas LLC/Wynn Las Vegas Capital Corp., 5.25%, 05/15/27(a)			125		113,125

10

Schedule of Investments  (unaudited) (continued) March 31, 2020 BlackRock Core Bond Trust (BHK) (Percentages shown are based on Net Assets)

Security		Par (000)		Value
Hotels, Restaurants & Leisure (continued)
Wynn Macau Ltd.:
4.88%, 10/01/24	USD		200	$	176,000
5.50%, 10/01/27			200		173,000
Wynn Resorts Finance LLC/Wynn Resorts Capital Corp., 5.13%, 10/01/29(a)			265		241,150
Yum! Brands, Inc.:
3.88%, 11/01/23			27		25,110
7.75%, 04/01/25(a)			225		236,250
4.75%, 01/15/30(a)			232		218,080
5.35%, 11/01/43			44		37,400
					13,494,621
Household Durables — 0.4%
Brookfield Residential Properties, Inc./Brookfield Residential US Corp.(a):
6.25%, 09/15/27			107		92,812
4.88%, 02/15/30			232		176,250
Controladora Mabe SA de CV, 5.60%, 10/23/28(a)			215		203,242
Global Prime Capital Pte Ltd., 5.50%, 10/18/23			200		159,130
K Hovnanian Enterprises, Inc., 7.75%, 02/15/26			206		210,635
Lennar Corp.:
6.25%, 12/15/21			196		195,510
4.88%, 12/15/23			85		83,300
4.75%, 05/30/25			90		85,950
5.25%, 06/01/26			38		38,665
4.75%, 11/29/27			239		238,402
Mattamy Group Corp., 4.63%, 03/01/30(a)			159		136,740
MDC Holdings, Inc., 6.00%, 01/15/43			72		68,076
Meritage Homes Corp., 5.13%, 06/06/27			35		32,900
PulteGroup, Inc.:
5.00%, 01/15/27			16		15,965
7.88%, 06/15/32			14		15,400
6.38%, 05/15/33			216		218,311
Shea Homes LP/Shea Homes Funding Corp., 4.75%, 02/15/28(a)			118		100,743
Shui On Development Holding Ltd., 5.75%, 11/12/23			200		175,666
Taylor Morrison Communities, Inc., 5.88%, 06/15/27(a)			149		138,387
Tempur Sealy International, Inc., 5.50%, 06/15/26			67		58,635
Theta Capital Pte Ltd., 8.13%, 01/22/25			200		144,750
TRI Pointe Group, Inc.:
4.88%, 07/01/21			73		67,806
5.25%, 06/01/27			28		24,912
Yanlord Land HK Co. Ltd.:
6.75%, 04/23/23			200		186,062
6.80%, 02/27/24			200		174,200
					3,042,449

Security		Par (000)		Value
Household Products — 0.0%
ACCO Brands Corp., 5.25%, 12/15/24(a)	USD		59	$	56,640
Energizer Holdings, Inc.(a):
6.38%, 07/15/26			29		29,290
7.75%, 01/15/27			166		171,594
					257,524
Independent Power and Renewable Electricity Producers — 0.5%
Azure Power Solar Energy Pvt Ltd., 5.65%, 12/24/24			200		169,016
Calpine Corp.:
5.50%, 02/01/24			39		37,050
5.75%, 01/15/25			293		271,025
5.25%, 06/01/26(a)			344		326,800
4.50%, 02/15/28(a)			367		355,715
5.13%, 03/15/28(a)			940		864,800
Clearway Energy Operating LLC:
5.75%, 10/15/25			101		99,990
4.75%, 03/15/28(a)			189		175,297
Genneia SA, 8.75%, 01/20/22(a)			370		207,662
Greenko Solar Mauritius Ltd., 5.95%, 07/29/26			200		161,271
NRG Energy, Inc.:
6.63%, 01/15/27			700		728,000
5.75%, 01/15/28			18		18,360
5.25%, 06/15/29(a)			397		408,910
TerraForm Power Operating LLC(a):
4.25%, 01/31/23			65		64,513
5.00%, 01/31/28			228		238,898
4.75%, 01/15/30			227		220,190
Vistra Energy Corp., 5.88%, 06/01/23			7		6,983
					4,354,480
Industrial Conglomerates — 0.1%
BWX Technologies, Inc., 5.38%, 07/15/26(a)			248		238,080
General Electric Co., 6.88%, 01/10/39			135		167,007
Grupo KUO SAB de CV, 5.75%, 07/07/27(a)			200		144,625
Smiths Group PLC, 3.63%, 10/12/22(a)			360		378,661
					928,373
Insurance — 2.0%
Acrisure LLC/Acrisure Finance, Inc., 8.13%, 02/15/24(a)			47		45,780
Alliant Holdings Intermediate LLC/Alliant Holdings Co-Issuer, 6.75%, 10/15/27(a)			552		516,893

11

Schedule of Investments  (unaudited) (continued) March 31, 2020 BlackRock Core Bond Trust (BHK) (Percentages shown are based on Net Assets)

Security		Par (000)		Value
Insurance (continued)
Allied World Assurance Co. Holdings Ltd., 4.35%, 10/29/25	USD		1,495	$	1,526,310
AmWINS Group, Inc., 7.75%, 07/01/26(a)			63		61,740
Aon PLC:
3.88%, 12/15/25			1,445		1,506,236
4.60%, 06/14/44			500		544,855
Asahi Mutual Life Insurance Co.(5 year USD Swap + 4.59%), 6.50%(f)(g)			333		316,357
Assicurazioni Generali SpA(3 mo. Euribor + 5.35%), 5.50%, 10/27/47(f)	EUR		100		119,682
AXA SA(3 mo. Euribor + 3.05%), 5.25%, 04/16/40(f)			500		550,844
Five Corners Funding Trust, 4.42%, 11/15/23(a)	USD		2,050		2,191,478
GTCR AP Finance, Inc., 8.00%, 05/15/27(a)			171		157,320
HUB International Ltd., 7.00%, 05/01/26(a)			834		825,660
Liberty Mutual Group, Inc., 6.50%, 05/01/42(a)			2,000		2,553,142
Muenchener Rueckversicherungs-Gesellschaft AG in Muenchen(3 mo. Euribor + 3.50%), 6.00%, 05/26/41(f)	EUR		400		461,550
Nationstar Mortgage Holdings, Inc.(a):
8.13%, 07/15/23	USD		357		349,075
9.13%, 07/15/26			48		43,440
6.00%, 01/15/27			257		218,450
Nationwide Building Society(5 year USD ICE Swap + 1.85%), 4.13%, 10/18/32(a)(f)			720		694,331
Prudential Financial, Inc.:
5.90%, 03/17/36			500		551,611
5.70%, 12/14/36			1,625		1,895,384
Teachers Insurance & Annuity Association of America, 4.27%, 05/15/47(a)			700		672,023
					15,802,161
Interactive Media & Services — 0.3%
Go Daddy Operating Co. LLC/GD Finance Co., Inc., 5.25%, 12/01/27(a)			144		145,325
Match Group, Inc.(a):
5.63%, 02/15/29			107		102,185
4.13%, 08/01/30			157		140,319
Netflix, Inc.:
4.88%, 04/15/28			31		31,930
5.88%, 11/15/28			455		486,167
5.38%, 11/15/29(a)			574		595,611
3.63%, 06/15/30	EUR		100		107,533
4.88%, 06/15/30(a)	USD		315		319,772
Rackspace Hosting, Inc., 8.63%, 11/15/24(a)			129		115,778

Security		Par (000)		Value
Interactive Media & Services (continued)
Twitter, Inc., 3.88%, 12/15/27(a)	USD		81	$	77,912
Uber Technologies, Inc.(a):
7.50%, 11/01/23			154		149,774
8.00%, 11/01/26			74		73,445
7.50%, 09/15/27			100		98,720
					2,444,471
IT Services — 0.4%
21Vianet Group, Inc., 7.88%, 10/15/21			200		168,008
Banff Merger Sub, Inc., 9.75%, 09/01/26(a)			1,019		896,720
Camelot Finance SA, 4.50%, 11/01/26(a)			416		403,520
Fair Isaac Corp., 4.00%, 06/15/28(a)			107		101,383
Fidelity National Information Services, Inc., 4.50%, 08/15/46			1,000		1,234,907
Gartner, Inc., 5.13%, 04/01/25(a)			129		126,097
Outfront Media Capital LLC/Outfront Media Capital Corp., 5.00%, 08/15/27(a)			272		250,240
Science Applications International Corp., 4.88%, 04/01/28(a)			173		166,080
WEX, Inc., 4.75%, 02/01/23(a)			105		100,800
Xerox Corp., 4.80%, 03/01/35			122		98,820
					3,546,575
Leisure Products — 0.1%
Mattel, Inc.:
6.75%, 12/31/25(a)			450		457,605
5.88%, 12/15/27(a)			199		204,532
6.20%, 10/01/40			16		13,240
5.45%, 11/01/41			74		58,460
					733,837
Life Sciences Tools & Services — 0.2%
Thermo Fisher Scientific, Inc., 5.30%, 02/01/44			1,000		1,230,703
Machinery — 0.2%
Colfax Corp.(a):
6.00%, 02/15/24			203		195,895
6.38%, 02/15/26			201		197,985
Manitowoc Co., Inc., 9.00%, 04/01/26(a)			62		54,870
Mueller Water Products, Inc., 5.50%, 06/15/26(a)			164		158,670
Platin 1426 GmbH, 5.38%, 06/15/23	EUR		100		84,151
RBS Global, Inc./Rexnord LLC, 4.88%, 12/15/25(a)	USD		287		268,345
SPX FLOW, Inc.(a):
5.63%, 08/15/24			149		144,530
5.88%, 08/15/26			35		33,600
Terex Corp., 5.63%, 02/01/25(a)			214		201,182

12

Schedule of Investments  (unaudited) (continued) March 31, 2020 BlackRock Core Bond Trust (BHK) (Percentages shown are based on Net Assets)

Security		Par (000)		Value
Machinery (continued)
Titan Acquisition Ltd./Titan Co-Borrower LLC, 7.75%, 04/15/26(a)	USD		492	$	410,820
Wabash National Corp., 5.50%, 10/01/25(a)			176		139,920
					1,889,968
Media — 5.3%
Altice Financing SA:
7.50%, 05/15/26(a)			1,042		1,009,594
3.00%, 01/15/28	EUR		100		96,967
5.00%, 01/15/28(a)	USD		239		211,515
Altice France SA(a):
7.38%, 05/01/26			1,106		1,097,871
8.13%, 02/01/27			678		706,815
5.50%, 01/15/28			391		366,093
AMC Networks, Inc.:
5.00%, 04/01/24			2		1,920
4.75%, 08/01/25			135		131,288
Block Communications, Inc., 4.88%, 03/01/28(a)			87		80,910
CCO Holdings LLC/CCO Holdings Capital Corp.(a):
5.13%, 05/01/27			665		666,729
5.88%, 05/01/27			18		18,540
5.00%, 02/01/28			189		189,472
5.38%, 06/01/29			604		620,670
4.75%, 03/01/30			152		151,240
4.50%, 08/15/30			919		900,620
4.50%, 05/01/32			864		842,573
Charter Communications Operating LLC/Charter Communications Operating Capital, 4.91%, 07/23/25			4,700		4,989,489
Clear Channel Worldwide Holdings, Inc.(a):
9.25%, 02/15/24			455		390,162
5.13%, 08/15/27			1,139		1,077,779
Comcast Cable Communications Holdings, Inc., 9.46%, 11/15/22			2,600		3,069,142
Comcast Corp.:
6.45%, 03/15/37			790		1,130,621
4.60%, 08/15/45			2,000		2,545,824
4.70%, 10/15/48			3,000		3,886,501
Connect Finco Sarl/Connect US Finco LLC, 6.75%, 10/01/26(a)			1,093		903,091
CSC Holdings LLC:
6.75%, 11/15/21			137		141,110
5.38%, 07/15/23(a)			340		339,997
5.25%, 06/01/24			240		240,598
6.63%, 10/15/25(a)			200		210,262
10.88%, 10/15/25(a)			654		707,137
5.50%, 05/15/26(a)			200		206,870
5.38%, 02/01/28(a)			200		204,000
5.75%, 01/15/30(a)			443		446,748

Security		Par (000)		Value
Media (continued)
Diamond Sports Group LLC/Diamond Sports Finance Co., 5.38%, 08/15/26(a)	USD		406	$	329,883
Discovery Communications LLC:
3.25%, 04/01/23			1,850		1,844,516
3.45%, 03/15/25			210		203,311
DISH DBS Corp.:
6.75%, 06/01/21			443		449,202
5.88%, 07/15/22			718		699,203
5.00%, 03/15/23			284		271,731
7.75%, 07/01/26			169		173,648
DISH Network Corp.(k):
2.38%, 03/15/24			38		30,699
3.38%, 08/15/26			259		206,693
Entercom Media Corp., 6.50%, 05/01/27(a)			173		150,078
Front Range BidCo, Inc.(a):
4.00%, 03/01/27			418		399,712
6.13%, 03/01/28			559		531,050
Gray Television, Inc., 5.13%, 10/15/24(a)			3		2,933
Hughes Satellite Systems Corp., 5.25%, 08/01/26			70		69,300
iHeartCommunications, Inc.:
6.38%, 05/01/26			91		86,457
5.25%, 08/15/27(a)			66		57,750
4.75%, 01/15/28(a)			50		45,000
Intelsat Jackson Holdings SA, 5.50%, 08/01/23			625		409,375
Interpublic Group of Cos., Inc., 3.75%, 02/15/23			2,000		1,970,248
Lamar Media Corp., 4.00%, 02/15/30(a)			85		79,050
LCPR Senior Secured Financing DAC, 6.75%, 10/15/27(a)			200		197,000
Live Nation Entertainment, Inc., 4.75%, 10/15/27(a)			67		59,630
Meredith Corp., 6.88%, 02/01/26			40		35,092
Midcontinent Communications/Midcontinent Finance Corp., 5.38%, 08/15/27(a)			108		104,567
Network i2i Ltd.(5 year CMT + 4.27%), 5.65%(f)(g)			250		198,437
Qualitytech LP/QTS Finance Corp., 4.75%, 11/15/25(a)			104		100,360
Radiate Holdco LLC/Radiate Finance, Inc., 6.63%, 02/15/25(a)			74		62,900
Sable International Finance Ltd., 5.75%, 09/07/27(a)			200		180,000
Sirius XM Radio, Inc.(a):
4.63%, 07/15/24			92		93,374
5.38%, 04/15/25			3		3,030
5.38%, 07/15/26			2		2,040
5.00%, 08/01/27			492		499,331
5.50%, 07/01/29			279		284,580

13

Schedule of Investments  (unaudited) (continued) March 31, 2020 BlackRock Core Bond Trust (BHK) (Percentages shown are based on Net Assets)

Security		Par (000)		Value
Media (continued)
TCI Communications, Inc., 7.88%, 02/15/26	USD		610	$	783,699
TEGNA, Inc., 5.50%, 09/15/24(a)			45		42,750
Telenet Finance Luxembourg Notes Sarl, 5.50%, 03/01/28(a)			200		186,000
Terrier Media Buyer, Inc., 8.88%, 12/15/27(a)			398		336,310
Tower Bersama Infrastructure Tbk PT, 4.25%, 01/21/25			200		175,000
Univision Communications, Inc.(a):
5.13%, 05/15/23			169		149,565
5.13%, 02/15/25			52		44,330
ViacomCBS, Inc., 5.85%, 09/01/43			645		660,858
Videotron Ltd., 5.13%, 04/15/27(a)			227		227,000
Virgin Media Finance PLC, 5.75%, 01/15/25(a)			515		499,550
Virgin Media Secured Finance PLC:
4.88%, 01/15/27	GBP		100		114,584
5.50%, 05/15/29(a)	USD		200		199,280
Walt Disney Co., 7.63%, 11/30/28			385		505,068
Ziggo Bond Co. BV(a):
6.00%, 01/15/27			150		145,500
5.13%, 02/28/30			200		196,000
Ziggo BV(a):
5.50%, 01/15/27			282		282,000
4.88%, 01/15/30			200		194,787
					42,154,609
Metals & Mining — 1.0%
ABJA Investment Co. Pte Ltd.:
5.95%, 07/31/24			250		204,625
5.45%, 01/24/28			200		142,752
Allegheny Technologies, Inc., 5.88%, 12/01/27			123		102,398
Arconic Corp., 6.13%, 02/15/28(a)			151		154,397
Big River Steel LLC/BRS Finance Corp., 7.25%, 09/01/25(a)			231		210,210
Constellium SE(a):
5.75%, 05/15/24			832		742,643
6.63%, 03/01/25			264		237,600
5.88%, 02/15/26			519		451,530
Freeport-McMoRan, Inc.:
3.55%, 03/01/22			55		53,144
3.88%, 03/15/23			924		873,180
4.25%, 03/01/30			264		229,680
5.40%, 11/14/34			245		226,625
5.45%, 03/15/43			1,235		1,105,325
Gold Fields Orogen Holdings BVI Ltd., 5.13%, 05/15/24(a)			200		187,812
Grinding Media, Inc./Moly-Cop AltaSteel Ltd., 7.38%, 12/15/23(a)			164		152,979

Security		Par (000)		Value
Metals & Mining (continued)
Joseph T Ryerson & Son, Inc., 11.00%, 05/15/22(a)	USD		84	$	78,120
JSW Steel Ltd., 5.95%, 04/18/24			200		149,875
Kaiser Aluminum Corp., 4.63%, 03/01/28(a)			90		79,875
Nexa Resources SA, 5.38%, 05/04/27(a)			299		224,250
Novelis Corp.(a):
5.88%, 09/30/26			551		540,732
4.75%, 01/30/30			646		574,940
Rio Tinto Finance USA PLC, 4.75%, 03/22/42			400		477,303
thyssenkrupp AG, 2.88%, 02/22/24	EUR		51		49,498
Vale Overseas Ltd., 6.25%, 08/10/26	USD		237		253,595
Vedanta Resources Finance II PLC, 8.00%, 04/23/23			313		118,549
					7,621,637
Multi-Utilities — 0.0%
Superior Plus LP/Superior General Partner, Inc., 7.00%, 07/15/26(a)			144		140,400
Multiline Retail — 0.0%
Dufry One BV, 2.00%, 02/15/27	EUR		100		85,939
Future Retail Ltd.:
5.60%, 01/22/25	USD		200		100,250
5.60%, 01/22/25(a)			200		100,250
					286,439
Offshore Drilling & Other Services — 0.0%
Entegris, Inc., 4.63%, 02/10/26(a)			62		58,900
Oil, Gas & Consumable Fuels — 4.3%
Apache Corp., 3.25%, 04/15/22			7		5,256
Ascent Resources Utica Holdings LLC/ARU Finance Corp., 10.00%, 04/01/22(a)			346		202,410
Bioceanico Sovereign Certificate Ltd., 0.00%, 06/05/34(l)			150		84,750
Buckeye Partners LP:
4.13%, 03/01/25(a)			179		150,897
4.50%, 03/01/28(a)			247		202,540
5.85%, 11/15/43			84		56,255
5.60%, 10/15/44			106		66,780
Callon Petroleum Co.:
6.25%, 04/15/23			251		59,612
6.13%, 10/01/24			147		26,092
8.25%, 07/15/25			128		20,480
Series WI, 6.38%, 07/01/26			122		20,435
Cenovus Energy, Inc., 4.25%, 04/15/27			400		195,875
Centennial Resource Production LLC, 6.88%, 04/01/27(a)			156		38,220
Cheniere Corpus Christi Holdings LLC, 5.13%, 06/30/27			71		63,056

14

Schedule of Investments  (unaudited) (continued) March 31, 2020 BlackRock Core Bond Trust (BHK) (Percentages shown are based on Net Assets)

Security		Par (000)		Value
Oil, Gas & Consumable Fuels (continued)
Cheniere Energy Partners LP:
5.63%, 10/01/26	USD		72	$	66,240
4.50%, 10/01/29(a)			342		297,540
Series WI, 5.25%, 10/01/25			33		30,360
Chesapeake Energy Corp., 11.50%, 01/01/25(a)			327		55,590
Cimarex Energy Co., 4.38%, 06/01/24			14		11,033
Citgo Holding, Inc., 9.25%, 08/01/24(a)			298		242,870
CNX Resources Corp., 5.88%, 04/15/22			531		485,865
Comstock Resources, Inc.:
7.50%, 05/15/25(a)			175		113,750
9.75%, 08/15/26			77		54,847
ConocoPhillips, 6.50%, 02/01/39			600		749,584
ConocoPhillips Canada Funding Co., 5.95%, 10/15/36			685		768,625
Continental Resources, Inc., 5.00%, 09/15/22			17		10,845
Crestwood Midstream Partners LP/Crestwood Midstream Finance Corp.:
6.25%, 04/01/23			11		6,162
5.63%, 05/01/27(a)			238		130,831
CrownRock LP/CrownRock Finance, Inc., 5.63%, 10/15/25(a)			697		362,440
CVR Energy, Inc.(a):
5.25%, 02/15/25			146		113,515
5.75%, 02/15/28			48		35,880
DCP Midstream Operating LP:
5.38%, 07/15/25			118		80,570
5.13%, 05/15/29			65		40,947
6.45%, 11/03/36(a)			148		70,996
6.75%, 09/15/37(a)			222		119,880
Denbury Resources, Inc., 9.00%, 05/15/21(a)			151		44,167
Devon Energy Corp., 5.85%, 12/15/25			1,000		790,309
Diamondback Energy, Inc., 3.50%, 12/01/29			32		21,757
eG Global Finance PLC:
6.75%, 02/07/25(a)			241		197,620
6.25%, 10/30/25	EUR		142		124,505
8.50%, 10/30/25(a)	USD		200		178,000
Enbridge, Inc.(3 mo. LIBOR US + 3.64%), 6.25%, 03/01/78(f)			1,935		1,451,250
Endeavor Energy Resources LP/EER Finance, Inc.(a):
5.50%, 01/30/26			352		242,954
5.75%, 01/30/28			253		172,040
Energy Transfer Operating LP:
4.05%, 03/15/25			500		433,951
4.75%, 01/15/26			1,250		1,139,458
5.30%, 04/15/47			540		410,329
EnLink Midstream LLC, 5.38%, 06/01/29			50		26,000

Security		Par (000)		Value
Oil, Gas & Consumable Fuels (continued)
EnLink Midstream Partners LP:
4.40%, 04/01/24	USD		144	$	72,677
4.15%, 06/01/25			10		4,847
4.85%, 07/15/26			20		9,834
5.60%, 04/01/44			122		41,175
5.05%, 04/01/45			19		6,929
EnQuest PLC, (7.00 Cash or 7.00% PIK), 7.00%, 10/15/23(a)(e)			7		1,680
EOG Resources, Inc., 5.10%, 01/15/36			200		187,833
EQT Corp.:
3.90%, 10/01/27			41		28,278
7.00%, 02/01/30			12		8,940
Extraction Oil & Gas, Inc.(a):
7.38%, 05/15/24			213		37,807
5.63%, 02/01/26			306		50,490
Genesis Energy LP/Genesis Energy Finance Corp.:
6.00%, 05/15/23			113		81,965
5.63%, 06/15/24			102		71,400
6.50%, 10/01/25			59		42,645
7.75%, 02/01/28			105		73,101
Geopark Ltd., 6.50%, 09/21/24			200		113,500
GMR Hyderabad International Airport Ltd., 4.25%, 10/27/27			200		159,848
Great Western Petroleum LLC/Great Western Finance, Inc., 9.00%, 09/30/21(a)			390		249,600
Hess Corp., 4.30%, 04/01/27			1,100		796,632
Hess Midstream Operations LP, 5.63%, 02/15/26(a)			95		67,076
Hilong Holding Ltd., 8.25%, 09/26/22			200		130,000
HPCL-Mittal Energy Ltd., 5.45%, 10/22/26			200		151,687
Impulsora Pipeline LLC, 6.05%, 12/31/42(d)			1,742		1,697,051
Indigo Natural Resources LLC, 6.88%, 02/15/26(a)			280		184,800
KeySpan Gas East Corp., 5.82%, 04/01/41(a)			1,010		1,220,933
Kinder Morgan, Inc.:
4.30%, 06/01/25			1,750		1,785,789
5.05%, 02/15/46			1,750		1,699,430
Marathon Petroleum Corp., 6.50%, 03/01/41			2,049		1,899,879
Matador Resources Co., 5.88%, 09/15/26			232		67,976
Medco Bell Pte Ltd., 6.38%, 01/30/27			250		145,000
Medco Oak Tree Pte Ltd., 7.38%, 05/14/26			250		147,812
MEG Energy Corp.(a):
7.00%, 03/31/24			29		13,376
6.50%, 01/15/25			387		244,777

15

Schedule of Investments  (unaudited) (continued) March 31, 2020 BlackRock Core Bond Trust (BHK) (Percentages shown are based on Net Assets)

Security		Par (000)		Value
Oil, Gas & Consumable Fuels (continued)
MPLX LP(a):
6.38%, 05/01/24	USD		69	$	61,897
4.25%, 12/01/27			250		201,937
Murphy Oil Corp.:
5.75%, 08/15/25			16		8,562
5.88%, 12/01/42			18		7,378
Nabors Industries Ltd.(a):
7.25%, 01/15/26			111		37,740
7.50%, 01/15/28			100		32,000
Nabors Industries, Inc., 4.63%, 09/15/21			13		8,190
NGPL PipeCo LLC, 7.77%, 12/15/37(a)			138		137,381
NuStar Logistics LP, 6.00%, 06/01/26			99		73,260
Occidental Petroleum Corp.:
4.85%, 03/15/21			59		49,530
2.60%, 08/13/21			148		116,372
2.70%, 08/15/22			103		73,444
5.55%, 03/15/26			1,500		793,360
Series 1, 4.10%, 02/01/21			94		79,899
Pacific Drilling SA, 8.38%, 10/01/23(a)			202		54,540
Parsley Energy LLC/Parsley Finance Corp.(a):
5.38%, 01/15/25			53		40,941
5.25%, 08/15/25			40		30,400
5.63%, 10/15/27			195		137,475
4.13%, 02/15/28			192		130,560
PBF Holding Co. LLC/PBF Finance Corp., 7.25%, 06/15/25			39		26,142
PDC Energy, Inc.:
6.25%, 12/01/25			34		16,655
1.13%, 09/15/21(k)			132		107,666
6.13%, 09/15/24			109		58,179
5.75%, 05/15/26			79		44,240
Pertamina Persero PT, 4.30%, 05/20/23			237		235,963
Petrobras Global Finance BV:
5.30%, 01/27/25			178		169,434
8.75%, 05/23/26			222		239,649
6.00%, 01/27/28			239		231,471
7.25%, 03/17/44			220		220,692
Puma International Financing SA, 5.13%, 10/06/24(a)			200		71,000
QEP Resources, Inc.:
6.88%, 03/01/21			113		57,630
5.38%, 10/01/22			198		93,060
5.25%, 05/01/23			93		34,410
5.63%, 03/01/26			132		48,180
Range Resources Corp.:
5.88%, 07/01/22			30		21,600
5.00%, 08/15/22			130		97,461
5.00%, 03/15/23(m)			125		91,250
Sabine Pass Liquefaction LLC, 5.88%, 06/30/26			1,750		1,583,400
Saudi Arabian Oil Co., 3.50%, 04/16/29			200		196,500

Security		Par (000)		Value
Oil, Gas & Consumable Fuels (continued)
SM Energy Co.:
6.13%, 11/15/22	USD		84	$	35,543
5.00%, 01/15/24			285		94,050
5.63%, 06/01/25			35		9,538
6.75%, 09/15/26			54		16,200
6.63%, 01/15/27			31		9,023
Southwestern Energy Co., 4.10%, 03/15/22			138		103,500
Suncor Energy, Inc., 6.50%, 06/15/38			1,000		1,025,370
Sunoco Logistics Partners Operations LP, 3.90%, 07/15/26			310		259,339
Sunoco LP/Sunoco Finance Corp.:
6.00%, 04/15/27			85		73,100
Series WI, 4.88%, 01/15/23			127		121,285
Series WI, 5.50%, 02/15/26			21		18,171
Series WI, 5.88%, 03/15/28			4		3,320
Tallgrass Energy Partners LP/Tallgrass Energy Finance Corp.(a):
5.50%, 09/15/24			238		130,900
5.50%, 01/15/28			38		19,760
Targa Resources Partners LP/Targa Resources Partners Finance Corp.:
5.13%, 02/01/25			95		80,978
5.88%, 04/15/26			184		152,720
5.38%, 02/01/27			2		1,646
6.50%, 07/15/27			195		166,237
5.00%, 01/15/28			133		107,207
6.88%, 01/15/29			511		411,355
5.50%, 03/01/30(a)			230		177,652
TransCanada PipeLines Ltd., 4.63%, 03/01/34			500		480,047
Viper Energy Partners LP, 5.38%, 11/01/27(a)			75		63,000
Western Midstream Operating LP, 5.38%, 06/01/21			1,425		1,138,646
Williams Cos., Inc.:
3.90%, 01/15/25			1,150		1,058,886
4.00%, 09/15/25			750		658,484
WPX Energy, Inc.:
8.25%, 08/01/23			43		31,605
5.25%, 09/15/24			75		45,750
5.75%, 06/01/26			16		9,120
5.25%, 10/15/27			81		44,550
4.50%, 01/15/30			301		163,443
YPF SA, 8.50%, 07/28/25			316		162,394
					34,360,402
Paper & Forest Products — 0.2%
International Paper Co., 6.00%, 11/15/41			870		1,118,469
Norbord, Inc., 6.25%, 04/15/23(a)			111		107,115
					1,225,584

16

Schedule of Investments  (unaudited) (continued) March 31, 2020 BlackRock Core Bond Trust (BHK) (Percentages shown are based on Net Assets)

Security		Par (000)		Value
Pharmaceuticals — 2.3%
AbbVie, Inc.:
3.60%, 05/14/25	USD		870	$	912,986
3.20%, 05/14/26			500		497,061
4.45%, 05/14/46			2,095		2,223,486
Allergan Funding SCS:
3.80%, 03/15/25			3,250		3,327,493
4.55%, 03/15/35			2,140		2,353,708
Allergan Sales LLC, 5.00%, 12/15/21(a)			758		785,355
Bausch Health Americas, Inc., 8.50%, 01/31/27(a)			745		778,525
Bausch Health Cos., Inc.:
5.50%, 03/01/23(a)			98		96,040
4.50%, 05/15/23	EUR		276		291,287
5.88%, 05/15/23(a)	USD		12		11,940
7.00%, 03/15/24(a)			232		236,348
6.13%, 04/15/25(a)			275		270,875
5.50%, 11/01/25(a)			76		76,783
9.00%, 12/15/25(a)			362		381,620
5.75%, 08/15/27(a)			248		255,341
7.00%, 01/15/28(a)			106		108,798
5.00%, 01/30/28(a)			149		141,058
7.25%, 05/30/29(a)			274		284,357
5.25%, 01/30/30(a)			94		88,883
Catalent Pharma Solutions, Inc.:
5.00%, 07/15/27(a)			200		194,000
2.38%, 03/01/28	EUR		100		100,364
Charles River Laboratories International, Inc.(a):
5.50%, 04/01/26	USD		154		158,620
4.25%, 05/01/28			170		163,863
CVS Health Corp.:
5.13%, 07/20/45			700		805,428
5.05%, 03/25/48			1,221		1,395,027
Elanco Animal Health, Inc., 5.65%, 08/28/28			123		129,685
Endo DAC/Endo Finance LLC/Endo Finco, Inc., 6.00%, 07/15/23(a)			200		144,876
MEDNAX, Inc., 6.25%, 01/15/27(a)			198		158,895
Mylan NV, 3.95%, 06/15/26			750		740,129
Nidda Healthcare Holding GmbH, 3.50%, 09/30/24	EUR		100		101,742
Par Pharmaceutical, Inc., 7.50%, 04/01/27(a)	USD		520		517,400
Rossini Sarl, 6.75%, 10/30/25	EUR		112		123,514
					17,855,487
Producer Durables: Miscellaneous — 0.1%
Open Text Corp., 3.88%, 02/15/28(a)	USD		368		345,920
Open Text Holdings, Inc., 4.13%, 02/15/30(a)			280		263,270
					609,190

Security		Par (000)		Value
Professional Services — 0.1%
ASGN, Inc., 4.63%, 05/15/28(a)	USD		181	$	168,131
Dun & Bradstreet Corp., 10.25%, 02/15/27(a)			314		332,840
					500,971
Real Estate — 0.6%
Central China Real Estate Ltd., 7.25%, 04/24/23			200		154,000
China Aoyuan Group Ltd.:
7.50%, 05/10/21			200		194,528
7.95%, 02/19/23			450		412,632
China SCE Group Holdings Ltd.:
8.75%, 01/15/21			200		198,000
7.25%, 04/19/23			200		172,000
CIFI Holdings Group Co. Ltd., 6.55%, 03/28/24			200		185,022
Country Garden Holdings Co. Ltd.:
8.00%, 01/27/24			200		204,000
6.50%, 04/08/24			200		194,938
6.15%, 09/17/25			200		192,000
Easy Tactic Ltd., 9.13%, 07/28/22			200		181,748
Fantasia Holdings Group Co. Ltd., 12.25%, 10/18/22			200		165,250
Kaisa Group Holdings Ltd., 11.95%, 10/22/22			200		172,375
KWG Group Holdings Ltd., 7.88%, 09/01/23			200		186,272
Logan Property Holdings Co. Ltd.:
7.50%, 08/25/22			200		189,750
6.50%, 07/16/23			400		374,250
New Metro Global Ltd.:
6.50%, 04/23/21			200		191,500
6.80%, 08/05/23			200		172,000
Powerlong Real Estate Holdings Ltd., 7.13%, 11/08/22			200		179,654
Ronshine China Holdings Ltd.:
11.25%, 08/22/21			200		196,500
10.50%, 03/01/22			200		189,750
8.95%, 01/22/23			200		184,950
Yuzhou Properties Co. Ltd., 8.63%, 01/23/22			200		189,882
Zhenro Properties Group Ltd.:
9.15%, 03/08/22			200		183,750
8.70%, 08/03/22			200		161,334
					4,826,085
Real Estate Management & Development — 1.1%
ADLER Real Estate AG, 3.00%, 04/27/26	EUR		100		95,612

17

Schedule of Investments  (unaudited) (continued) March 31, 2020 BlackRock Core Bond Trust (BHK) (Percentages shown are based on Net Assets)

Security		Par (000)		Value
Real Estate Management & Development (continued)
Agile Group Holdings Ltd.:
(5 year CMT + 11.29%), 7.88%(f)(g)	USD		200	$	159,518
6.70%, 03/07/22			450		431,694
Central China Real Estate Ltd., 6.88%, 08/08/22			200		163,500
China Evergrande Group:
8.25%, 03/23/22			200		161,575
9.50%, 04/11/22			200		162,250
11.50%, 01/22/23			450		363,082
12.00%, 01/22/24			250		187,031
China SCE Group Holdings Ltd., 7.38%, 04/09/24			200		175,375
CIFI Holdings Group Co. Ltd.:
7.63%, 02/28/23			400		384,274
6.45%, 11/07/24			200		181,454
Country Garden Holdings Co. Ltd., 5.13%, 01/14/27			200		185,250
Easy Tactic Ltd.:
8.75%, 01/10/21			200		193,000
8.13%, 02/27/23			200		173,000
Fantasia Holdings Group Co. Ltd.:
8.38%, 03/08/21			200		181,000
11.75%, 04/17/22			200		172,100
Greenland Global Investment Ltd.:
7.25%, 03/12/22			200		186,868
6.75%, 06/25/22			200		188,187
5.60%, 11/13/22			200		172,500
Hopson Development Holdings Ltd., 7.50%, 06/27/22			200		183,494
Howard Hughes Corp., 5.38%, 03/15/25(a)			30		29,025
Kaisa Group Holdings Ltd.:
11.25%, 04/09/22			200		178,250
11.50%, 01/30/23			400		335,302
10.88%, 07/23/23			200		161,750
KWG Group Holdings Ltd.:
7.88%, 08/09/21			200		192,433
7.40%, 03/05/24			200		180,662
Logan Property Holdings Co. Ltd.:
6.90%, 06/09/24			200		186,385
5.75%, 01/14/25			200		175,000
Newmark Group, Inc., 6.13%, 11/15/23			64		65,103
Redsun Properties Group Ltd., 9.95%, 04/11/22			200		168,430
RKPF Overseas A Ltd., Class A, 6.70%, 09/30/24			513		458,654
Shimao Property Holdings Ltd.:
6.13%, 02/21/24			200		198,875
5.60%, 07/15/26			200		192,625
Sunac China Holdings Ltd.:
7.88%, 02/15/22			200		191,750
7.25%, 06/14/22			200		187,887

Security		Par (000)		Value
Real Estate Management & Development (continued)
7.95%, 10/11/23	USD		200	$	183,188
7.50%, 02/01/24			200		179,850
Times China Holdings Ltd., 6.75%, 07/16/23			513		462,822
Yango Justice International Ltd., 10.00%, 02/12/23			200		174,250
Yuzhou Properties Co. Ltd.:
8.50%, 02/04/23			200		183,814
8.50%, 02/26/24			200		177,625
8.38%, 10/30/24			200		173,313
					8,537,757
Road & Rail — 0.8%
Autostrade per l’Italia SpA, 5.88%, 06/09/24	EUR		100		111,393
Burlington Northern Santa Fe LLC, 5.75%, 05/01/40	USD		1,890		2,406,740
CSX Corp., 4.75%, 05/30/42			350		392,752
Herc Holdings, Inc., 5.50%, 07/15/27(a)			241		224,130
Lima Metro Line 2 Finance Ltd.(a):
5.88%, 07/05/34			2,722		2,857,716
4.35%, 04/05/36			200		190,000
United Rentals North America, Inc., 5.25%, 01/15/30			40		39,988
					6,222,719
Semiconductors & Semiconductor Equipment — 0.6%
Advanced Micro Devices, Inc., 7.50%, 08/15/22			51		54,060
Analog Devices, Inc., 3.90%, 12/15/25			470		490,377
Broadcom Corp./Broadcom Cayman Finance Ltd., 3.88%, 01/15/27			2,850		2,722,800
Microchip Technology, Inc., 1.63%, 02/15/25(k)			53		76,817
ON Semiconductor Corp., 1.00%, 12/01/20(k)			168		166,888
Qorvo, Inc.:
5.50%, 07/15/26			204		213,231
4.38%, 10/15/29(a)			38		35,340
QUALCOMM, Inc., 4.65%, 05/20/35			250		315,902
Sensata Tech, Inc., 4.38%, 02/15/30(a)			128		115,200
Sensata Technologies BV, 5.00%, 10/01/25(a)			330		312,675
					4,503,290
Software — 2.0%
ACI Worldwide, Inc., 5.75%, 08/15/26(a)			433		428,670
CA, Inc., 3.60%, 08/15/22			705		660,955
Castle US Holding Corp., 9.50%, 02/15/28(a)			214		203,300
CDK Global, Inc.:
4.88%, 06/01/27			428		438,700
5.25%, 05/15/29(a)			44		44,880

18

Schedule of Investments  (unaudited) (continued) March 31, 2020 BlackRock Core Bond Trust (BHK) (Percentages shown are based on Net Assets)

Security		Par (000)		Value
Software (continued)
Genesys Telecommunications Laboratories, Inc./Greeneden Lux 3 Sarl/Greeneden US Ho, 10.00%, 11/30/24(a)	USD		779	$	796,753
Infor US, Inc., 6.50%, 05/15/22			1,190		1,169,175
Microsoft Corp., 3.50%, 11/15/42			4,000		4,588,849
MSCI, Inc.(a):
4.00%, 11/15/29			51		50,662
3.63%, 09/01/30			61		57,874
Nuance Communications, Inc., 5.63%, 12/15/26			169		164,468
Oracle Corp., 5.38%, 07/15/40			3,025		4,040,516
PTC, Inc.:
6.00%, 05/15/24			125		128,628
3.63%, 02/15/25(a)			111		103,785
4.00%, 02/15/28(a)			126		120,998
RP Crown Parent LLC, 7.38%, 10/15/24(a)			461		439,241
Solera LLC/Solera Finance, Inc., 10.50%, 03/01/24(a)			1,120		1,097,600
Sophia LP/Sophia Finance, Inc., 9.00%, 09/30/23(a)			265		265,000
SS&C Technologies, Inc., 5.50%, 09/30/27(a)			809		843,148
					15,643,202
Specialty Retail — 0.6%
Asbury Automotive Group, Inc.(a):
4.50%, 03/01/28			60		51,000
4.75%, 03/01/30			58		49,300
Catalent Pharma Solutions, Inc., 4.88%, 01/15/26(a)			234		226,980
Group 1 Automotive, Inc.:
5.00%, 06/01/22			40		36,800
5.25%, 12/15/23(a)			13		13,341
Home Depot, Inc., 5.88%, 12/16/36			1,660		2,252,127
IAA, Inc., 5.50%, 06/15/27(a)			173		167,378
L Brands, Inc.:
6.88%, 11/01/35			215		159,100
6.75%, 07/01/36			49		35,280
Lowe’s Cos., Inc., 4.38%, 09/15/45			1,000		1,029,508
Penske Automotive Group, Inc., 5.50%, 05/15/26			22		20,068
PetSmart, Inc.(a):
7.13%, 03/15/23			164		152,725
5.88%, 06/01/25			240		236,400
Staples, Inc., 7.50%, 04/15/26(a)			598		528,483
					4,958,490
Technology Hardware, Storage & Peripherals — 0.7%
Apple, Inc., 4.65%, 02/23/46			2,400		3,183,107

Security		Par (000)		Value
Technology Hardware, Storage & Peripherals (continued)
Hewlett Packard Enterprise Co., 4.90%, 10/15/25	USD		1,500	$	1,579,336
NCR Corp.(a):
5.75%, 09/01/27			125		113,750
6.13%, 09/01/29			148		138,217
Presidio Holdings, Inc.(a):
4.88%, 02/01/27			230		205,850
8.25%, 02/01/28			271		238,819
Western Digital Corp., 4.75%, 02/15/26			387		392,805
					5,851,884
Textiles, Apparel & Luxury Goods — 0.0%
William Carter Co., 5.63%, 03/15/27(a)			57		55,148
Thrifts & Mortgage Finance — 0.1%
Ladder Capital Finance Holdings LLLP/Ladder Capital Finance Corp.(a):
5.25%, 03/15/22			17		15,215
4.25%, 02/01/27			603		476,370
					491,585
Tobacco — 1.1%
Altria Group, Inc.:
9.95%, 11/10/38			516		777,240
10.20%, 02/06/39			894		1,501,850
5.38%, 01/31/44			2,000		2,215,927
3.88%, 09/16/46			1,250		1,126,365
Reynolds American, Inc.:
4.45%, 06/12/25			635		638,792
7.00%, 08/04/41			1,000		1,081,398
5.85%, 08/15/45			1,500		1,611,225
					8,952,797
Transportation Infrastructure — 0.2%
Aeropuertos Dominicanos Siglo XXI SA, 6.75%, 03/30/29(a)			200		132,000
Ferrovial Netherlands BV(5 year EUR Swap + 2.13%), 2.12%(f)(g)	EUR		100		89,726
I 595 Express LLC, 3.31%, 12/31/31(d)	USD		798		846,062
Transurban Finance Co. Property Ltd., 4.13%, 02/02/26(a)			580		637,198
					1,704,986
Utilities — 0.2%
AES Argentina Generacion SA, 7.75%, 02/02/24(a)			370		208,125
AES Panama SRL, 6.00%, 06/25/22(a)			228		214,320
Centrais Eletricas Brasileiras SA, 3.63%, 02/04/25(a)			281		250,090
Generacion Mediterranea SA/Generacion Frias SA/Central Termica Roca SA, 9.63%, 07/27/23(a)			370		155,400

19

Schedule of Investments  (unaudited) (continued) March 31, 2020 BlackRock Core Bond Trust (BHK) (Percentages shown are based on Net Assets)

Security		Par (000)		Value
Utilities (continued)
Stoneway Capital Corp., 10.00%, 03/01/27(a)(i)(j)	USD		447	$	63,865
Vistra Operations Co. LLC(a):
5.50%, 09/01/26			56		57,680
5.63%, 02/15/27			184		189,750
5.00%, 07/31/27			107		108,605
					1,247,835
Wireless Telecommunication Services — 0.8%
Comunicaciones Celulares SA Via Comcel Trust, 6.88%, 02/06/24(a)			200		191,312
Matterhorn Telecom SA, 4.00%, 11/15/27	EUR		100		96,636
Radiate Holdco LLC/Radiate Finance, Inc., 6.88%, 02/15/23(a)	USD		77		70,070
Rogers Communications, Inc., 7.50%, 08/15/38			2,325		3,513,983
Sprint Capital Corp.:
6.88%, 11/15/28			567		647,627
8.75%, 03/15/32			146		193,085
Sprint Corp.:
7.88%, 09/15/23			252		276,590
7.13%, 06/15/24			307		336,979
7.63%, 02/15/25			197		217,685
7.63%, 03/01/26			397		449,325
T-Mobile USA, Inc.:
6.50%, 01/15/26			42		44,100
4.50%, 02/01/26			272		278,120
4.75%, 02/01/28			240		250,032
					6,565,544
Total Corporate Bonds — 61.1% (Cost — $488,763,401)					485,163,518

Security		Par (000)		Value
Floating Rate Loan Interests(b) — 2.0%
Auto Components — 0.0%
Panther BF Aggregator 2 LP, USD Term Loan B, (1 mo. LIBOR + 3.50%), 4.44%, 04/30/26(b)(d)	USD		174	$	158,073
Banks — 0.0%
Capri Finance LLC, 2017 1st Lien Term Loan, (3 mo. LIBOR + 3.00%), 4.78%, 11/01/24(b)			107		91,519
Building Products — 0.0%
CPG International, Inc., 2017 Term Loan, (3 mo. LIBOR US), 5.93%, 05/05/24(b)			73		60,401
Capital Markets — 0.0%
Jefferies Finance LLC, 2019 Term Loan, (1 mo. LIBOR US), 4.24%, 06/03/26			146		120,891
Chemicals — 0.1%
Alpha 3 BV, 2017 Term Loan B1, (3 mo. LIBOR + 3.00%, 1.00% Floor), 4.45%, 01/31/24(b)(d)			437		398,420
Ascend Performance Materials Operations LLC, 2019 Term Loan B, (3 mo. LIBOR US), 6.70%, 08/27/26(b)(d)			256		214,800
Charter NEX US, Inc., Incremental Term Loan, (3 mo. LIBOR US), 4.49%, 05/16/24			132		113,870
Invictus US LLC, 2nd Lien Term Loan, (6 mo. LIBOR + 6.75%), 8.53%, 03/30/26(b)(d)			37		25,725
Momentive Performance Materials, Inc., Term Loan B, (1 mo. LIBOR + 3.25%), 4.24%, 05/15/24(b)			124		99,772
					852,587
Commercial Services & Supplies — 0.2%
Advanced Disposal Services, Inc., Term Loan B3,11/10/23(b)(n)			30		29,956
Asurion LLC,(b):
2017 2nd Lien Term Loan, (3 mo. LIBOR US), 7.49%, 08/04/25			261		237,836
2017 Term Loan B4, 08/04/22(n)			49		46,448
Dealer Tire, LLC, 2020 Term Loan B, (1 mo. LIBOR US), 5.24%, 12/12/25			49		39,591
Diamond (BC) BV, Term Loan, (3 mo. LIBOR + 3.00%), 4.78%, 09/06/24(b)			219		162,142
GFL Environmental, Inc., 2018 USD Term Loan B, (1 mo. LIBOR + 3.00%, 1.00% Floor), 3.99%, 05/30/25(b)			94		90,993

20

Schedule of Investments  (unaudited) (continued) March 31, 2020 BlackRock Core Bond Trust (BHK) (Percentages shown are based on Net Assets)

Security		Par (000)		Value
Commercial Services & Supplies (continued)
KAR Auction Services, Inc., 2019 Term Loan B6, (1 mo. LIBOR + 2.25%), 3.19%, 09/19/26(b)(d)	USD		34	$	31,622
Tempo Acquisition LLC, Term Loan, 05/01/24(b)(n)			24		21,055
Verscend Holding Corp., 2018 Term Loan B, (1 mo. LIBOR + 4.50%), 5.49%, 08/27/25(b)(d)			600		563,798
					1,223,441
Construction & Engineering — 0.1%
Brand Energy & Infrastructure Services, Inc., 2017 Term Loan, (3 mo. LIBOR US), 6.06%, 06/21/24(b)			955		758,822
Containers & Packaging — 0.0%
BWAY Holding Co., 2017 Term Loan B, (3 mo. LIBOR US), 5.08%, 04/03/24(b)			230		186,694
Diversified Consumer Services — 0.0%
Amentum Government Services Holdings LLC, Term Loan B, (1 mo. LIBOR + 4.00%), 4.99%, 02/01/27(b)			42		38,640
Ascend Learning LLC, 2017 Term Loan B, (3 mo. LIBOR US), 4.00%, 07/12/24(b)			33		29,544
BidFair MergerRight, Inc., Term Loan B, (1 mo. LIBOR US), 6.50%, 01/15/27(b)			210		161,036
					229,220
Diversified Financial Services — 0.0%
Advisor Group, Inc., 2019 Term Loan, (1 mo. LIBOR US), 5.99%, 07/31/26(b)			38		27,263
Deerfield Dakota Holding LLC, 2020 USD Term Loan B, 03/05/27(b)(d)(n)			54		45,767
VS Buyer LLC, Term Loan B, (3 mo. LIBOR + 3.25%), 4.86%, 02/28/27(b)(d)			49		46,795
					119,825
Diversified Telecommunication Services — 0.2%
CenturyLink, Inc., 2020 Term Loan B, (1 mo. LIBOR US), 3.24%, 03/15/27(b)			343		317,917
Frontier Communications Corp., 2017 Term Loan B1, (3 mo. LIBOR US), 5.21%, 06/15/24(b)			445		421,252

Security		Par (000)		Value
Diversified Telecommunication Services (continued)
Zayo Group Holdings, Inc., USD Term Loan, (1 mo. LIBOR + 3.00%), 3.99%, 03/09/27(b)(d)	USD		877	$	824,380
					1,563,549
Energy Equipment & Services — 0.1%
Pioneer Energy Services Corp., Term Loan, (1 mo. LIBOR + 7.75%, 1.00% Floor), 9.35%, 11/08/22(b)(d)			516		485,040
Food Products — 0.0%
Chobani LLC, 2017 Term Loan B, (3 mo. LIBOR US), 4.50%, 10/10/23(b)			146		129,792
Health Care Equipment & Supplies — 0.1%
Immucor, Inc., Extended Term Loan B, (3 mo. LIBOR US), 6.45%, 06/15/21			793		677,763
Ortho-Clinical Diagnostics SA, 2018 Term Loan B, (1 mo. LIBOR + 3.25%), 4.77%, 06/30/25			89		75,669
					753,432
Health Care Providers & Services — 0.1%
AHP Health Partners, Inc., 2018 Term Loan, (3 mo. LIBOR US), 5.50%, 06/30/25(b)			201		176,239
Da Vinci Purchaser Corp., 2019 Term Loan, (1 mo. LIBOR US), 5.87%, 01/08/27(b)(d)			121		113,740
Envision Healthcare Corp., 2018 1st Lien Term Loan, (3 mo. LIBOR US), 4.74%, 10/10/25(b)			594		299,966
Gentiva Health Services, Inc., 2020 Term Loan, (1 mo. LIBOR US), 4.25%, 07/02/25(b)(d)			108		100,686
RegionalCare Hospital Partners Holdings, Inc., 2018 Term Loan B, 11/17/25(b)(n)			74		68,399
					759,030

21

Schedule of Investments  (unaudited) (continued) March 31, 2020 BlackRock Core Bond Trust (BHK) (Percentages shown are based on Net Assets)

Security		Par (000)		Value
Health Care Services — 0.0%
Emerald TopCo., Inc., Term Loan, (1 mo. LIBOR US), 4.49%, 07/24/26(b)(d)	USD		107	$	97,135
Health Care Technology — 0.1%
Athenahealth, Inc., 2019 Term Loan B, (3 mo. LIBOR US), 5.28%, 02/11/26(b)(d)			395		367,445
Hotels, Restaurants & Leisure — 0.0%
Stars Group Holdings BV, 2018 USD Incremental Term Loan, (3 mo. LIBOR + 3.50%), 4.95%, 07/10/25(b)			97		92,584
Independent Power and Renewable Electricity Producers — 0.0%
Calpine Corp., 2019 Term Loan B10, (1 mo. LIBOR US), 2.99%, 08/12/26(b)(d)			27		25,510
Industrial Conglomerates — 0.1%
PSAV Holdings LLC, 2018 2nd Lien Term Loan, (3 mo. LIBOR US), 9.01%, 09/01/25(b)(d)			313		187,781
Sequa Mezzanine Holdings LLC, 1st Lien Term Loan, (3 mo. LIBOR + 5.00%, 1.00% Floor), 6.74%, 11/28/21(b)			112		89,191
Vertiv Group Corp., Term Loan B, 03/02/27(b)(d)(n)			225		193,500
					470,472
Insurance — 0.1%
Alliant Holdings I, Inc., 2018 Term Loan B, (3 mo. LIBOR US), 3.99%, 05/09/25(b)			125		113,578
Hub International Ltd., 2019 Incremental Term Loan B, (1 mo. LIBOR US), 5.69%, 04/25/25(b)			128		119,700
Sedgwick Claims Management Services, Inc.,(b):
2019 Term Loan B, (1 mo. LIBOR + 4.00%), 4.99%, 09/03/26			143		128,092
Term Loan B, (1 mo. LIBOR + 3.25%), 4.24%, 12/31/25			396		347,938
					709,308

Security		Par (000)		Value
IT Services — 0.0%
Camelot U.S. Acquisition 1 Co., Term Loan B, (1 mo. LIBOR + 3.25%), 4.24%, 10/31/26(b)(d)	USD		106	$	99,391
PUG LLC, USD Term Loan, (1 mo. LIBOR + 3.50%), 4.49%, 01/29/27(b)(d)			112		95,548
					194,939
Life Sciences Tools & Services — 0.0%
Sotera Health Holdings LLC, 2019 Term Loan, (1 mo. LIBOR + 4.50%, 1.00% Floor), 5.50%, 12/11/26(b)			326		282,295
Machinery — 0.1%
Ingersoll-Rand Global Holding Co. Ltd., 2020 USD Spinco Term Loan, (1 mo. LIBOR + 1.75%), 2.74%, 03/01/27(b)			55		51,425
MHI Holdings LLC, Term Loan B, (1 mo. LIBOR + 5.00%), 5.99%, 09/21/26(b)			132		108,628
Titan Acquisition Ltd., 2018 Term Loan B, (3 mo. LIBOR + 3.00%), 4.45%, 03/28/25(b)			732		596,735
					756,788
Media — 0.3%
Altice France SA, 2018 Term Loan B13, (1 mo. LIBOR + 4.00%), 4.70%, 08/14/26(b)			109		102,934
Clear Channel Outdoor Holdings, Inc., Term Loan B, (1 mo. LIBOR US), 4.49%, 08/21/26(b)(d)			458		384,597
Connect Finco Sarl, Term Loan B, (1 mo. LIBOR + 4.50%), 5.49%, 12/11/26			192		150,331
Intelsat Jackson Holdings SA,(b):
2017 Term Loan B3, (6 mo. LIBOR + 3.75%, 1.00% Floor), 5.68%, 11/27/23			64		58,684
2017 Term Loan B4, (6 mo. LIBOR + 4.50%, 1.00% Floor), 6.43%, 01/02/24			198		181,067
2017 Term Loan B5, (Fixed + 6.63%), 6.63%, 01/02/24			1,070		987,532
Learfield Communications LLC, 2016 1st Lien Term Loan, (3 mo. LIBOR US), 4.86%, 12/01/23(b)			47		30,732
Terrier Media Buyer, Inc., Term Loan B, (3 mo. LIBOR + 4.25%), 5.70%, 12/17/26(b)(d)			102		90,195
					1,986,072

22

Schedule of Investments  (unaudited) (continued) March 31, 2020 BlackRock Core Bond Trust (BHK) (Percentages shown are based on Net Assets)

Security		Par (000)		Value
Oil & Gas Equipment & Services — 0.0%
McDermott Technology Americas, Inc.,(b):
2020 DIP New Money Term Loan, (3 mo. LIBOR + 9.00%), 10.81%, 10/21/20	USD		85	$	76,811
2020 SP DIP Roll Up Term Loan, (3 mo. LIBOR + 9.00%), 10.65%, 10/22/20			163		147,416
					224,227
Oil, Gas & Consumable Fuels — 0.1%
California Resources Corp., Second Out Term Loan, (3 mo. LIBOR + 10.37%, 1.00% Floor), 11.99%, 12/31/21(b)			312		14,686
Chesapeake Energy Corp., 2019 Last Out Term Loan, (1 mo. LIBOR US), 9.00%, 06/24/24(b)			823		316,855
CITGO Holding, Inc., 2019 Term Loan B, (1 mo. LIBOR US), 8.00%, 08/01/23(b)			158		127,619
CONSOL Energy, Inc., 1st Lien Term Loan B, (3 mo. LIBOR US), 5.49%, 09/27/24(b)			85		55,551
					514,711
Pharmaceuticals — 0.1%
Endo Luxembourg Finance Co. I Sarl, 2017 Term Loan B, (1 mo. LIBOR + 4.25%), 5.25%, 04/29/24(b)			289		257,720
Jaguar Holding Co. II, 2018 Term Loan, (3 mo. LIBOR US), 3.50%, 08/18/22(b)			161		153,184
					410,904
Professional Services — 0.0%
Dun & Bradstreet Corp., Term Loan, (1 mo. LIBOR US), 4.96%, 02/06/26(b)			268		240,195
Software — 0.2%
BMC Software Finance, Inc., 2017 Term Loan, 10/02/25(b)(n)			105		86,651
Castle US Holding Corp., USD Term Loan B, (1 mo. LIBOR US), 5.20%, 01/29/27(b)			137		108,659
Cypress Intermediate Holdings III, Inc., 2017 1st Lien Term Loan, 04/29/24(b)(n)			30		27,397

Security		Par (000)		Value
Software (continued)
Financial & Risk US Holdings, Inc., 2018 USD Term Loan, (1 mo. LIBOR US), 4.24%, 10/01/25(b)	USD		128	$	122,241
Infor (US), Inc., Term Loan B6, (3 mo. LIBOR US), 3.75%, 02/01/22(b)			79		75,316
Informatica LLC,(b):
2020 USD 2nd Lien Term Loan, (Fixed + 7.13%), 7.13%, 02/25/25(d)			278		244,640
2020 USD Term Loan B, (1 mo. LIBOR US), 4.24%, 02/25/27			131		112,879
Kronos, Inc.,(b):
2017 Term Loan B, 11/01/23(n)			41		37,121
2nd Lien Term Loan, (3 mo. LIBOR + 8.25%, 1.00% Floor), 10.01%, 11/01/24			353		322,890
Mitchell International, Inc., 2017 1st Lien Term Loan, (1 mo. LIBOR + 3.25%), 4.24%, 11/29/24(b)			89		73,364
Renaissance Holding Corp., 2018 Add On Term Loan, (1 mo. LIBOR + 3.25%), 4.24%, 05/30/25(b)			10		7,944
RP Crown Parent LLC, 2016 Term Loan B, 10/12/23(b)(d)(n)			26		24,911
Solera LLC, Term Loan B, 03/03/23(b)(n)			88		81,847
Tibco Software Inc.,(b)(d):
2020 2nd Lien Term Loan, (1 mo. LIBOR + 7.25%), 8.24%, 03/03/28			121		112,530
2020 Term Loan B, (1 mo. LIBOR + 3.75%), 4.74%, 06/30/26			311		292,501
Ultimate Software Group, Inc., Term Loan B, (1 mo. LIBOR + 3.75%), 4.74%, 05/04/26(b)			148		137,394
					1,868,285
Specialty Retail — 0.0%
PetSmart, Inc., Term Loan B2, (6 mo. LIBOR + 4.00%, 1.00% Floor), 5.00%, 03/11/22(b)			280		268,065
Wireless Telecommunication Services — 0.0%
Xplornet Communications, Inc., Term Loan B, (3 mo. LIBOR + 4.00%, 1.00% Floor), 5.45%, 09/09/21(b)(d)			91		86,938
Total Floating Rate Loan Interests — 2.0% (Cost — $18,986,319)					16,088,189

23

Schedule of Investments  (unaudited) (continued) March 31, 2020 BlackRock Core Bond Trust (BHK) (Percentages shown are based on Net Assets)

Security		Par (000)		Value
Foreign Agency Obligations — 2.8%
Bahrain — 0.0%
CBB International Sukuk Co. 7 SPC, 6.88%, 10/05/25	USD		200	$	196,750
Colombia — 0.2%
Colombia Government International Bond:
8.13%, 05/21/24			290		332,594
4.50%, 01/28/26			600		609,562
3.88%, 04/25/27			268		263,896
					1,206,052
Dominican Republic — 0.1%
Dominican Republic International Bond, 5.50%, 01/27/25			379		362,892
Egypt — 0.2%
Egypt Government Bond:
16.00%, 06/11/22	EGP		6,171		397,099
14.30%, 09/03/22			6,430		401,240
Egypt Government International Bond:
5.75%, 04/29/20	USD		626		624,044
5.58%, 02/21/23(a)			200		185,125
8.50%, 01/31/47(a)			400		325,000
					1,932,508
Iceland — 0.5%
Iceland Government International Bond, 5.88%, 05/11/22			3,555		3,930,548
Indonesia — 0.2%
Indonesia Government International Bond:
4.75%, 01/08/26			380		402,325
4.10%, 04/24/28			600		612,562
Indonesia Treasury Bond:
8.38%, 09/15/26	IDR		364,000		22,864
6.13%, 05/15/28			3,479,000		189,735
					1,227,486

Security		Par (000)		Value
Italy — 0.4%
Italian Government International Bond, 5.38%, 06/15/33	USD		2,925	$	3,428,023
Mexico — 0.0%
Mexico Government International Bond, 4.15%, 03/28/27			260		264,712
Mongolia — 0.0%
Mongolia Government International Bond, 8.75%, 03/09/24			250		235,755
Nigeria — 0.0%
Nigeria Government International Bond, 7.63%, 11/21/25			344		264,880
Pakistan — 0.0%
Pakistan Government International Bond, 6.88%, 12/05/27			200		165,245
Third Pakistan International Sukuk Co. Ltd., 5.63%, 12/05/22			200		186,700
					351,945
Paraguay — 0.0%
Paraguay Government International Bond, 5.40%, 03/30/50(a)			200		187,313
Portugal — 0.6%
Portugal Government International Bond, 5.13%, 10/15/24(a)			3,970		4,447,440
Qatar — 0.2%
Qatar Government International Bond:
4.50%, 04/23/28			660		729,300
4.00%, 03/14/29(a)			440		470,800
					1,200,100
Russia — 0.1%
Russian Foreign Bond — Eurobond:
4.75%, 05/27/26			600		638,100
4.25%, 06/23/27			400		419,000
					1,057,100
Saudi Arabia — 0.1%
Saudi Government International Bond, 4.50%, 04/17/30			678		728,850
Sri Lanka — 0.1%
Sri Lanka Government International Bond:
6.85%, 03/14/24			200		118,396
6.35%, 06/28/24			400		235,427
7.85%, 03/14/29			200		108,212
7.55%, 03/28/30			200		110,250
					572,285

24

Schedule of Investments  (unaudited) (continued) March 31, 2020 BlackRock Core Bond Trust (BHK) (Percentages shown are based on Net Assets)

Security		Par (000)		Value
Turkey — 0.0%
Turkey Government International Bond, 6.25%, 09/26/22	USD		200	$	194,875
Ukraine — 0.1%
Ukraine Government International Bond:
7.75%, 09/01/23			100		93,500
7.75%, 09/01/25			385		347,944
9.75%, 11/01/28			200		194,812
					636,256
Total Foreign Agency Obligations — 2.8% (Cost — $22,764,146)					22,425,770
Municipal Bonds — 3.2%
California — 0.9%
State of California, GO, Build America Bonds:
7.55%, 04/01/39			280		458,085
Various Purpose, 7.63%, 03/01/40			1,720		2,787,071
East Bay Municipal Utility District Water System Revenue, RB, Build America Bonds, 5.87%, 06/01/40			1,900		2,625,059
University of California, RB, Build America Bonds, 5.95%, 05/15/45			885		1,148,544
					7,018,759
Georgia — 0.3%
Municipal Electric Authority of Georgia, Refunding RB, Build America Bonds, Series A, 7.06%, 04/01/57			1,970		2,464,667
Illinois — 0.3%
State of Illinois, GO, Pension, 5.10%, 06/01/33(m)			2,000		1,990,860
Indiana — 0.4%
Indianapolis Local Public Improvement Bond Bank, RB, Build America Bonds, 6.12%, 01/15/40			2,535		3,557,543
New York — 1.3%
Metropolitan Transportation Authority, RB, Build America Bonds, 7.34%, 11/15/39			1,295		1,843,277
New York City Water & Sewer System, Refunding RB, 2nd General Resolution, Series GG, Build America Bonds, 5.72%, 06/15/42			1,390		1,969,171

Security		Par (000)		Value
New York (continued)
City of New York Municipal Water Finance Authority, Refunding RB, 2nd General Resolution, Series EE, 5.50%, 12/15/20(o)	USD		930	$	960,086
New York State Dormitory Authority, RB, Build America Bonds, 5.60%, 03/15/40			1,900		2,568,344
Port Authority of New York & New Jersey, RB, 159th Series, 6.04%, 12/01/29			780		1,024,117
New York City Water & Sewer System, RB, 2nd General Resolution:
5.38%, 12/15/20(o)			510		526,386
5.38%, 06/15/43			260		267,119
New York State Dormitory Authority, RB, Build America Bonds, 5.63%, 03/15/39			1,100		1,291,818
					10,450,318
Total Municipal Bonds — 3.2% (Cost — $20,388,581)					25,482,147
Non-Agency Mortgage-Backed Securities — 4.2%
Collateralized Mortgage Obligations — 0.3%
Banc of America Funding Corp., Series 2007-2, Class 1A2, 6.00%, 03/25/37			414		342,090
Countrywide Alternative Loan Trust:
Series 2005-64CB, Class 1A15, 5.50%, 12/25/35			757		690,231
Series 2006-OA21, Class A1, (1 mo. LIBOR US + 0.19%), 0.96%, 03/20/47(b)			639		462,136
GMAC Mortgage Corp. Loan Trust, Series 2005-AR3, Class 5A1, 4.29%, 06/19/35(c)			234		202,331
GSR Mortgage Loan Trust:
Series 2006-4F, Class 1A1, 5.00%, 05/25/36			26		58,841
Series 2007-4F, Class 3A1, 6.00%, 07/25/37			130		104,161
JPMorgan Mortgage Trust, Series 2006-S3, Class 1A12, 6.50%, 08/25/36			56		34,300
Merrill Lynch Mortgage Investors, Inc., Series 2006-A3, Class 3A1, 3.98%, 05/25/36(c)			337		276,568
WaMu Mortgage Pass-Through Certificates, Series 2007-OA4, Class 1A, (12 mo. MTA + 0.77%), 2.74%, 05/25/47(b)			142		116,696
					2,287,354

25

Schedule of Investments  (unaudited) (continued) March 31, 2020 BlackRock Core Bond Trust (BHK) (Percentages shown are based on Net Assets)

Security		Par (000)		Value
Commercial Mortgage-Backed Securities — 3.9%
Banc of America Merrill Lynch Commercial Mortgage Securities Trust, Series 2015-200P, Class C, 3.60%, 04/14/33(a)(c)	USD		4,170	$	4,273,089
Citigroup Commercial Mortgage Trust, Series 2013-GC15, Class B, 5.21%, 09/10/46(c)			7,183		7,387,098
Citigroup/Deutsche Bank Commercial Mortgage Trust, Series 2006-CD3, Class AM, 5.65%, 10/15/48			1,004		1,028,539
Commercial Mortgage Trust(c):
Series 2013-CR11, Class B, 5.12%, 08/10/50			7,000		7,049,025
Series 2015-CR22, Class C, 4.11%, 03/10/48			5,000		4,329,155
Series 2015-LC19, Class C, 4.24%, 02/10/48			3,500		2,996,230
CSAIL Commercial Mortgage Trust, Series 2015-C1, Class C, 4.27%, 04/15/50(c)			1,000		854,324
Morgan Stanley Capital I Trust, Series 2014-CPT, Class G, 3.45%, 07/13/29(a)(c)			3,200		3,156,233
					31,073,693
Total Non-Agency Mortgage-Backed Securities — 4.2% (Cost — $34,741,581)					33,361,047
Preferred Securities — 9.3%
Capital Trusts — 8.7%
Banks — 2.2%
Banco Bilbao Vizcaya Argentaria SA, 6.13%(f)(g)			2,200		1,617,000
Bank of East Asia Ltd., 5.88%(f)(g)			500		496,665
Bankia SA, 6.38%(f)(g)	EUR		200		172,016
BNP Paribas SA, 7.20%(a)(f)(g)	USD		2,000		1,980,000
Burgan Bank SAK, 5.75%(f)(g)			250		220,313
Capital One Financial Corp., Series E, 5.55%(f)(g)			3,500		3,010,000
CIT Group, Inc., Series A, 5.80%(f)(g)			163		141,810
Credit Agricole SA, 7.88%(a)(f)(g)			1,000		965,000
Nanyang Commercial Bank Ltd., 5.00%(f)(g)			200		181,605
Nordea Bank AB, 6.13%(a)(f)(g)			2,960		2,632,920

Security		Par (000)		Value
Banks (continued)
TMB Bank PCL, 4.90%(f)(g)	USD		250	$	212,500
Wells Fargo & Co.,(f)(g):
Series Q, 5.85%			75		1,826,250
Series S, 5.90%			3,390		3,322,200
Series U, 5.88%			645		654,675
					17,432,954
Building Materials — 0.0%
Holcim Finance Luxembourg SA, 3.00%(f)(g)	EUR		100		95,036
Capital Markets — 0.3%
China Cinda Asset Management Co. Ltd., 4.45%(f)(g)			200		196,875
Morgan Stanley, Series H, 5.44%(f)(g)	USD		2,627		2,213,248
					2,410,123
Diversified Financial Services — 3.6%
Bank of America Corp.,(f)(g):
Series AA, 6.10%			409		413,090
Series DD, 6.30%			45		47,250
Series FF, 5.88%			3,500		3,546,690
Series X, 6.25%			4,620		4,689,300
Series Z, 6.50%			87		91,785
Bank of New York Mellon Corp.,(f)(g):
Series D, 4.50%			2,000		1,680,000
Series E, 4.95%			2,000		1,740,000
BNP Paribas SA, 4.50%(a)(f)(g)			200		154,000
Credit Suisse Group AG, 6.38%(a)(f)(g)			300		263,310
HBOS Capital Funding LP, 6.85%(g)			100		94,150
HSBC Holdings PLC(f)(g):
6.00%			435		412,162
6.50%			1,090		1,019,150
JPMorgan Chase & Co.,(f)(g):
Series 1, 5.24%			3,462		3,090,735
Series FF, 5.00%			820		770,177
Series HH, 4.60%			372		325,574
Series Q, 5.15%			3,000		2,850,000
Series R, 6.00%			70		69,300
Series S, 6.75%			90		94,050
Series U, 6.13%			500		475,000
Series V, 4.75%			6,430		5,581,240
Royal Bank of Scotland Group PLC, 8.63%(f)(g)			200		195,000
Societe Generale SA, 7.88%(a)(f)(g)			1,000		903,130
Woori Bank, 4.25%(f)(g)			250		235,168
					28,740,261
Diversified Telecommunication Services — 0.0%
Telefonica Europe BV, 5.88%(f)(g)	EUR		100		112,803
Electric Utilities — 0.9%
Electricite de France SA, 5.25%(a)(f)(g)			4,200		4,053,000
NextEra Energy Capital Holdings, Inc., 5.65%,5/01/2079(f)			2,750		2,528,892
RWE AG, 2.75%,(f)(g)			10		10,761
					6,592,653

26

Schedule of Investments  (unaudited) (continued) March 31, 2020 BlackRock Core Bond Trust (BHK) (Percentages shown are based on Net Assets)

Security		Par (000)		Value
Insurance — 1.7%
Achmea BV, 4.63%(f)(g)	EUR		200	$	181,356
Allstate Corp.(f):
6.50%, 05/15/67	USD		4,100		4,428,000
Series B, 5.75%, 08/15/53			2,000		1,780,000
Heungkuk Life Insurance Co. Ltd., 4.48%(f)(g)			200		191,313
MetLife, Inc., 6.40%, 12/15/2066			2,554		2,665,364
Voya Financial, Inc., 5.65%, 5/15/2053(f)			4,500		4,072,500
					13,318,533
Oil, Gas & Consumable Fuels — 0.0%
Naturgy Finance BV, 3.38%(f)(g)	EUR		100		105,909
Utilities — 0.0%
Electricite de France SA, 4.00%(f)(g)			100		107,143
Wireless Telecommunication Services — 0.0%
Vodafone Group PLC, 3.10%,1/03/2079(c)			100		106,016
Total Capital Trusts — 8.7%					69,021,431
		Shares
Preferred Stocks — 0.5%
Capital Markets — 0.5%
Goldman Sachs Group, Inc., Series J, 5.50%(f)(g)			92,000		2,235,600
Morgan Stanley, Series K, 5.85%(f)(g)			66,567		1,638,880
					3,874,480
Thrifts & Mortgage Finance — 0.0%
Federal Home Loan Mortgage Corp., Series S, 8.25%(c)(g)			10,000		63,300
Total Preferred Stocks — 0.5%					3,937,780
Trust Preferred — 0.1%
Diversified Financial Services — 0.1%
Citigroup Capital XIII, 8.14%, 10/30/40(f)			29,583		757,325
Total Trust Preferreds — 0.1%					757,325
Total Preferred Securities — 9.3% (Cost — $79,535,457)					73,716,536

Security		Par (000)			Value
U.S. Government Sponsored Agency Securities — 20.0%
Agency Obligations — 1.8%
Fannie Mae, 5.63%, 07/15/37(m)	USD		1,600		$	2,518,970
Federal Home Loan Bank(m) 5.25%, 12/09/22			1,375			1,547,916
5.37%, 09/09/24			4,025			4,898,974
Residual Funding Corp., 0.00%, 04/15/30(l)			6,055			5,192,850
						14,158,710
Collateralized Mortgage Obligations — 2.5%
Fannie Mae Mortgage-Backed Securities:
Series 2015-47, Class GL, 3.50%, 07/25/45			1,636			1,911,925
Series 1991-87, Class S, (1 mo. LIBOR US + 26.68%), 24.17%, 08/25/21(b)			—	(p)		231
Series G-07, Class S, (1 mo. LIBOR US + 1144.57%), 961.08%, 03/25/21(b)			—	(p)		4
Series G-33, Class PV, 1,078.42%, 10/25/21			—	(p)		—
Series 1991-46, Class S, (1 mo. LIBOR US + 2519.00%), 2,302.22%, 05/25/21(b)			—	(p)		—
Freddie Mac Mortgage-Backed Securities:
Series 4350, Class DY, 4.00%, 06/15/44			2,830			3,274,018
Series 4549, Class TZ, 4.00%, 11/15/45			2,913			3,382,503
Series 4398, Class ZX, 4.00%, 09/15/54			9,559			11,444,945
Series 1057, Class J, 1,008.00%, 03/15/21			—	(p)		—
Series 0192, Class U, (1 mo. LIBOR US + 17.25%), 1,009.03%, 02/15/22(b)			—	(p)		—
						20,013,626
Interest Only Collateralized Mortgage Obligations — 0.4%
Fannie Mae Mortgage-Backed Securities:
Series 1997-50, Class SI, (1 mo. LIBOR US + 9.20%), 1.20%, 04/25/23(b)			13			167
Series 2012-96, Class DI, 4.00%, 02/25/27			2,149			66,104
Series 2012-47, Class NI, 4.50%, 04/25/42			3,410			519,861
Series G92-05, Class H, 9.00%, 01/25/22			—	(p)		1
Series 094, Class 2, 9.50%, 08/25/21			—	(p)		2

27

Schedule of Investments  (unaudited) (continued) March 31, 2020 BlackRock Core Bond Trust (BHK) (Percentages shown are based on Net Assets)

Security		Par (000)			Value
Interest Only Collateralized Mortgage Obligations (continued)
Series 1990-136, Class S, (1 mo. LIBOR US + 17.60%), 18.45%, 11/25/20(b)	USD		—	(p)	$	—
Series 1991-139, Class PT, 648.35%, 10/25/21			—	(p)		—
Series G-10, Class S, (1 mo. LIBOR US + 1107.27%), 929.81%, 05/25/21(b)			—	(p)		—
Series 1991-099, Class L, 930.00%, 08/25/21			—	(p)		—
Series 1990-123, Class M, 1,009.50%, 10/25/20			—	(p)		—
Freddie Mac Mortgage-Backed Securities:
Series 1254, Class Z, 8.50%, 04/15/22			5			312
Series 1043, Class H, (1 mo. LIBOR US + 45.00%), 37.54%, 02/15/21(b)			—	(p)		—
Series 1054, Class I, (1 mo. LIBOR US + 881.40%), 737.04%, 03/15/21(b)			—	(p)		—
Series 1056, Class KD, 1,084.50%, 03/15/21			—	(p)		—
Ginnie Mae Mortgage-Backed Securities(b):
Series 2009-78, Class SD, (1 mo. LIBOR US + 6.20%), 5.43%, 09/20/32			2,019			164,803
Series 2009-116, Class KS, (1 mo. LIBOR US + 6.47%), 5.77%, 12/16/39			1,225			197,223
Series 2011-52, Class NS, (1 mo. LIBOR US + 6.67%), 5.97%, 04/16/41			10,196			1,863,846
						2,812,319
Mortgage-Backed Securities — 15.3%
Fannie Mae Mortgage-Backed Securities:
0.00%, 04/01/50(q)			36,770			39,212,151
3.00%, 09/01/43(m)			11,031			11,658,410
3.50%, 08/01/49(m)			7,617			8,127,478
4.00%, 12/01/41 - 04/01/56(m)			24,055			26,346,675
4.50%, 07/01/41 - 07/01/55(m)			12,578			13,884,329
5.00%, 08/01/34(m)			1,187			1,313,674
5.50%, 06/01/38(m)			582			659,589
6.00%, 12/01/38(m)			472			543,931
Freddie Mac Mortgage-Backed Securities(m):
3.00%, 04/01/33			6,323			6,642,798

Security		Par (000)			Value
Mortgage-Backed Securities (continued)
3.50%, 07/01/49	USD		11,138		$	11,845,254
4.50%, 03/01/47			1,421			1,554,397
Ginnie Mae Mortgage-Backed Securities:
5.50%, 08/15/33			41			44,915
8.00%, 07/15/24			—	(p)		53
						121,833,654
Principal Only Collateralized Mortgage Obligations — 0.0%
Fannie Mae Mortgage-Backed Securities(l):
Series 1993-51, Class E, 0.00%, 02/25/23			2			2,353
Series 203, Class 1, 0.00%, 02/25/23			1			708
Series 1993-70, Class A, 0.00%, 05/25/23			—	(p)		420
Series 0228, Class 1, 0.00%, 06/25/23			1			536
						4,017
Total U.S. Government Sponsored Agency Securities — 20.0% (Cost — $147,192,925)						158,822,326
U.S. Treasury Obligations — 27.2%
U.S. Treasury Bonds(m):
3.00%, 11/15/44			61,400			83,242,570
2.50%, 02/15/46(r)			66,500			83,831,563
2.75%, 11/15/47			2,000			2,652,891
U.S. Treasury Notes:
2.75%, 09/15/21(m)			2,800			2,903,250
2.75%, 04/30/23(m)			2,800			3,011,422
2.75%, 09/30/20(m)			2,880			2,917,800
2.75%, 08/31/23(m)			1,700			1,840,449
7.50%, 11/15/24(m)			8,200			10,870,445
2.75%, 08/31/25(m)			14,800			16,632,078
3.00%, 09/30/25(m)			2,400			2,732,156
2.88%, 08/15/28(m)			1,000			1,182,500
3.13%, 11/15/28(m)			3,000			3,621,680
Total U.S. Treasury Obligations — 27.2% (Cost — $172,635,909)						215,438,804
Total Long-Term Investments — 135.3% (Cost — $1,038,695,326)						1,074,400,546

28

Schedule of Investments  (unaudited) (continued) March 31, 2020 BlackRock Core Bond Trust (BHK) (Percentages shown are based on Net Assets)

Security		Shares		Value
Money Market Funds — 5.6%
BlackRock Liquidity Funds, T-Fund, Institutional Class, 0.21%(s)(t)			44,447,068	$	44,447,068
Total Money Market Funds — 5.6% (Cost — $44,447,068)					44,447,068
Options Purchased — 1.0% (Cost — $4,505,120)					7,457,543
Total Investments Before TBA Sale Commitments and Options Written — 141.9% (Cost — $1,087,647,514)					1,126,305,157
		Par (000)
TBA Sale Commitments — (4.9%)
Mortgage-Backed Securities — (4.9%)
Fannie Mae Mortgage-Backed Securities 0.00%, 04/01/50(q)	USD		36,770	$	(39,212,151	)
Total TBA Sale Commitments — (4.9)% (Proceeds — $38,424,412) —					(39,212,151	)
Options Written — (1.3)% (Premiums Received — $7,359,867)					(10,257,886	)
Total Investments, Net of TBA Sale Commitments and Options Written — 135.7% (Cost — $1,041,863,235)					1,076,835,120
Liabilities in Excess of Other Assets — (35.7)%					(283,235,387	)
Net Assets — 100.0%				$	793,599,733

^(a)  Security exempt from registration pursuant to Rule 144A under the Securities Act of 1933, as amended. These securities may be resold in transactions exempt from registration to qualified institutional investors.

^(b)  Variable rate security. Rate shown is the rate in effect as of period end.

^(c)  Variable or floating rate security, which interest rate adjusts periodically based on changes in current interest rates and prepayments on the underlying pool of assets. Rate shown is the rate in effect as of period end.

^(d)  Security is valued using significant unobservable inputs and is classified as Level 3 in the fair value hierarchy.

^(e)  Payment-in-kind security which may pay interest/dividends in additional par/shares and/or in cash. Rates shown are the current rate and possible payment rates.

^(f)  Variable rate security. Security may be issued at a fixed coupon rate, which converts to a variable rate at a specified date. Rate shown is the rate in effect as of period end.

^(g)  Perpetual security with no stated maturity date.

^(h)  When-issued security.

⁽ⁱ⁾  Non-income producing security.

^(j)  Issuer filed for bankruptcy and/or is in default.

^(k)  Convertible security.

^(l)  Zero-coupon bond.

^(m)  All or a portion of the security has been pledged as collateral in connection with outstanding reverse repurchase agreements.

⁽ⁿ⁾  Represents an unsettled loan commitment at period end. Certain details associated with this purchase are not known prior to the settlement date, including coupon rate.

^(o)  U.S. Government securities held in escrow, are used to pay interest on this security as well as to retire the bond in full at the date indicated, typically at a premium to par.

^(p)  Amount is less than 500.

^(q)  Represents or includes a TBA transaction.

29

Schedule of Investments  (unaudited) (continued) March 31, 2020 BlackRock Core Bond Trust (BHK)     

^(r)  All or a portion of the security has been pledged as collateral in connection with outstanding OTC derivatives.

^(s)  Annualized 7-day yield as of period end.

^(t)  Investments in issuers considered to be an affiliate/affiliates of the Trust during the period ended March 31, 2020 for purposes of Section 2(a)(3) of the Investment Company Act of 1940, as amended, were as follows:

Affiliated Issuer	Shares Held at 12/31/19		Shares Purchased			Shares Sold		Shares Held at 03/31/20		Value at 03/31/20		Income		Net Realized Gain (Loss) (a)		Change in Unrealized Appreciation (Depreciation)
BlackRock Liquidity Funds, T-Fund, Institutional Class		13,516,974		30,930,094	(b)		—		44,447,068	$	44,447,068	$	86,408	$	—	$	—

^(a)  Includes net capital gain distributions, if applicable.

^(b)  Represents net shares purchased (sold).

For Trust compliance purposes, the Trust’s industry classifications refer to one or more of the industry sub-classifications used by one or more widely recognized market indexes or rating group indexes, and/or as defined by the investment adviser. These definitions may not apply for purposes of this report, which may combine such industry sub-classifications for reporting ease.

Currency Abbreviations
CAD	Canadian Dollar
EUR	Euro
GBP	British Pound
JPY	Japanese Yen
NZD	New Zealand Dollar
USD	United States Dollar
Portfolio Abbreviations
CLO	Collateralized Loan Obligation
CR	Custodian Receipt
DIP	Debtor-In-Possession
EURIBOR	Euro Interbank Offered Rate
GO	General Obligation Bonds
LIBOR	London Interbank Offered Rate
MSCI	Morgan Stanley Capital International
PCL	Public Company Limited
PIK	Payment-In-Kind
RB	Revenue Bonds
REIT	Real Estate Investment Trust

30

Schedule of Investments  (unaudited) (continued) March 31, 2020 BlackRock Core Bond Trust (BHK)     

Reverse Repurchase Agreements

Counterparty

Interest Rate

Trade Date

Maturity Date (a)

Face Value

Face Value Including Accrued Interest

Type of Non-Cash Underlying Collateral

Remaining Contractual Maturity of the Agreements (a)

BNP Paribas S.A.

0.20

%

05/30/19

Open

$

2,547,469

$

2,595,572

U.S. Government Sponsored Agency Securities

Open/Demand

BNP Paribas S.A.

0.20

05/30/19

Open

2,250,000

2,292,486

U.S. Government Sponsored Agency Securities

Open/Demand

BNP Paribas S.A.

0.20

05/30/19

Open

1,555,469

1,584,840

U.S. Government Sponsored Agency Securities

Open/Demand

Barclays Bank PLC

0.50

08/27/19

Open

2,030,000

2,030,212

Municipal Bonds

Open/Demand

Barclays Capital, Inc.

(1.50

)

12/05/19

Open

25,830

25,787

Corporate Bonds

Open/Demand

BNP Paribas S.A.

0.15

01/02/20

Open

5,835,200

5,858,805

U.S. Treasury Obligations

Open/Demand

BNP Paribas S.A.

0.15

01/02/20

Open

68,921,500

69,200,307

U.S. Treasury Obligations

Open/Demand

BNP Paribas S.A.

0.15

01/02/20

Open

25,875,000

25,979,672

U.S. Treasury Obligations

Open/Demand

Nomura Securities International, Inc.

0.08

01/28/20

Open

1,795,625

1,800,657

U.S. Treasury Obligations

Open/Demand

Nomura Securities International, Inc.

0.08

01/28/20

Open

44,353,688

44,477,989

U.S. Treasury Obligations

Open/Demand

Nomura Securities International, Inc.

0.08

01/28/20

Open

3,386,250

3,395,740

U.S. Treasury Obligations

Open/Demand

Nomura Securities International, Inc.

0.08

01/28/20

Open

15,604,355

15,648,086

U.S. Treasury Obligations

Open/Demand

Nomura Securities International, Inc.

0.08

01/28/20

Open

1,113,750

1,116,871

U.S. Treasury Obligations

Open/Demand

Nomura Securities International, Inc.

0.08

01/28/20

Open

10,608,750

10,638,481

U.S. Treasury Obligations

Open/Demand

Nomura Securities International, Inc.

0.08

01/28/20

Open

2,884,000

2,892,082

U.S. Treasury Obligations

Open/Demand

Nomura Securities International, Inc.

0.08

01/28/20

Open

2,616,000

2,623,331

U.S. Treasury Obligations

Open/Demand

Nomura Securities International, Inc.

0.08

01/28/20

Open

2,282,500

2,288,897

U.S. Treasury Obligations

Open/Demand

Cantor Fitzgerald & Company

0.85

03/10/20

4/15/20

16,069,883

16,077,472

U.S. Government Sponsored Agency Securities

Up to 30 Days

Cantor Fitzgerald & Company

0.85

03/10/20

4/15/20

11,270,038

11,275,360

U.S. Government Sponsored Agency Securities

Up to 30 Days

Citigroup Global Markets, Inc.

0.90

03/10/20

4/15/20

5,812,473

5,815,380

U.S. Government Sponsored Agency Securities

Up to 30 Days

Citigroup Global Markets, Inc.

0.90

03/10/20

4/15/20

1,931,115

1,932,081

U.S. Government Sponsored Agency Securities

Up to 30 Days

Citigroup Global Markets, Inc.

0.90

03/10/20

4/15/20

3,969,195

3,971,180

U.S. Government Sponsored Agency Securities

Up to 30 Days

Citigroup Global Markets, Inc.

0.60

03/17/20

4/08/20

6,362,590

6,364,075

U.S. Government Sponsored Agency Securities

Up to 30 Days

Bofa Securities, Inc.

(1.25

)

03/17/20

Open

63,750

63,717

Corporate Bonds

Open/Demand

Bofa Securities, Inc.

0.95

03/19/20

4/15/20

11,179,000

11,182,540

U.S. Government Sponsored Agency Securities

Up to 30 Days

HSBC Securities (USA), Inc.

0.85

03/19/20

4/15/20

1,501,835

1,502,260

U.S. Government Sponsored Agency Securities

Up to 30 Days

31

Schedule of Investments  (unaudited) (continued) March 31, 2020 BlackRock Core Bond Trust (BHK)     

Reverse Repurchase Agreements (continued)

Counterparty

Interest Rate

Trade Date

Maturity Date (a)

Face Value

Face Value Including Accrued Interest

Type of Non-Cash Underlying Collateral

Remaining Contractual Maturity of the Agreements (a)

HSBC Securities (USA), Inc.

0.85

%

03/19/20

4/15/20

$

7,656,204

$

7,657,948

U.S. Government Sponsored Agency Securities

Up to 30 Days

HSBC Securities (USA), Inc.

0.85

03/19/20

4/15/20

1,284,230

1,284,594

U.S. Government Sponsored Agency Securities

Up to 30 Days

HSBC Securities (USA), Inc.

0.85

03/19/20

4/15/20

2,097,730

2,098,325

U.S. Government Sponsored Agency Securities

Up to 30 Days

HSBC Securities (USA), Inc.

0.85

03/19/20

4/15/20

5,742,301

5,743,928

U.S. Government Sponsored Agency Securities

Up to 30 Days

HSBC Securities (USA), Inc.

0.85

03/19/20

4/15/20

521,617

521,765

U.S. Government Sponsored Agency Securities

Up to 30 Days

HSBC Securities (USA), Inc.

0.85

03/19/20

4/15/20

1,585,166

1,585,615

U.S. Government Sponsored Agency Securities

Up to 30 Days

HSBC Securities (USA), Inc.

0.85

03/19/20

4/15/20

628,155

628,333

U.S. Government Sponsored Agency Securities

Up to 30 Days

HSBC Securities (USA), Inc.

0.85

03/19/20

4/15/20

1,858,759

1,859,286

U.S. Government Sponsored Agency Securities

Up to 30 Days

$

273,219,427

$

274,013,674

^(a)  Certain agreements have no stated maturity and can be terminated by either party at any time.

Derivative Financial Instruments Outstanding as of Period End

Futures Contracts

Description	Number of Contracts		Expiration Date		Notional Amount (000)		Value/ Unrealized Appreciation (Depreciation)
Long Contracts
Euro Bund		27		04/24/20	$	16	$	(8,960	)
10-Year U.S. Ultra Long Treasury Note		143		06/19/20		22,312		440,426
U.S. Ultra Long Treasury Bond		149		06/19/20		33,059		2,125,691
2-Year U.S. Treasury Note		506		06/30/20		111,514		1,134,268
5-Year U.S. Treasury Note		1,012		06/30/20		126,864		2,618,107
								6,309,532
Short Contracts 10-Year U.S. Treasury Note		670		06/19/20		92,921		(985,199	)
U.S. Long Treasury Bond		19		06/19/20		3,402		(286,313	)
								(1,271,512	)
							$	5,038,020

32

Schedule of Investments  (unaudited) (continued) March 31, 2020 BlackRock Core Bond Trust (BHK)     

Forward Foreign Currency Exchange Contracts

Currency Purchased		Currency Sold		Counterparty	Settlement Date		Unrealized Appreciation (Depreciation)
GBP	4,289,000	USD	5,325,252	Natwest Markets PLC		04/03/20	$	2,183
GBP	504,000	USD	625,871	State Street Bank and Trust Co.		04/03/20		155
JPY	45,932,000	USD	426,204	Royal Bank of Canada		04/03/20		983
USD	5,682	EUR	5,000	Bank of America N.A.		04/03/20		167
USD	656,188	GBP	509,000	Standard Chartered Bank		04/03/20		23,951
USD	5,529,212	GBP	4,289,000	Standard Chartered Bank		04/03/20		201,776
USD	27,124	JPY	2,911,000	Canadian Imperial Bank of Commerce		04/03/20		51
USD	225,998	JPY	23,939,000	Goldman Sachs International		04/03/20		3,355
USD	125,370	NZD	198,000	Morgan Stanley & Co. International PLC		04/03/20		7,225
USD	618,691	EUR	560,000	UBS AG		05/05/20		282
USD	5,525,130	EUR	5,001,000	UBS AG		05/05/20		2,515
USD	118,789	NZD	198,000	Morgan Stanley & Co. International PLC		05/05/20		673
JPY	706,557,459	NZD	10,610,000	Morgan Stanley & Co. International PLC		06/17/20		265,257
USD	12,620,000	CAD	17,569,564	Bank of America N.A.		06/17/20		126,337
USD	6,310,000	CAD	8,756,475	Barclays Bank PLC		06/17/20		83,298
USD	6,500,000	CAD	9,005,414	HSBC Bank PLC		06/17/20		96,278
USD	6,520,000	JPY	682,802,501	JPMorgan Chase Bank N.A.		06/17/20		149,217
								963,703
EUR	560,000	USD	617,848	UBS AG		04/03/20		(207	)
EUR	5,001,000	USD	5,517,603	UBS AG		04/03/20		(1,846	)
NZD	198,000	USD	118,815	Morgan Stanley & Co. International PLC		04/03/20		(670	)
USD	5,512	EUR	5,000	Bank of America N.A.		04/03/20		(3	)
USD	773,256	EUR	703,000	Bank of America N.A.		04/03/20		(2,104	)
USD	5,705,378	EUR	5,187,000	Bank of America N.A.		04/03/20		(15,524	)
USD	242,895	JPY	26,710,000	Standard Chartered Bank		04/03/20		(5,519	)
USD	5,329,499	GBP	4,289,000	Natwest Markets PLC		05/05/20		(1,684	)
USD	626,358	GBP	504,000	State Street Bank and Trust Co.		05/05/20		(109	)
USD	427,095	JPY	45,932,000	Royal Bank of Canada		05/07/20		(775	)
CAD	8,721,430	USD	6,310,000	Citibank N.A.		06/17/20		(108,218	)
CAD	8,782,737	USD	6,310,000	Citibank N.A.		06/17/20		(64,623	)
CAD	8,787,213	USD	6,310,000	JPMorgan Chase Bank N.A.		06/17/20		(61,440	)
CAD	9,053,720	USD	6,500,000	JPMorgan Chase Bank N.A.		06/17/20		(61,927	)
JPY	684,581,092	USD	6,520,000	Goldman Sachs International		06/17/20		(132,622	)
NZD	10,610,000	JPY	683,284,000	JPMorgan Chase Bank N.A.		06/17/20		(48,108	)
								(505,379	)
	Net unrealized appreciation						$	458,324

33

Schedule of Investments  (unaudited) (continued) March 31, 2020 BlackRock Core Bond Trust (BHK)     

Interest Rate Caps / Floors — Purchased

Description	Exercise Rate			Counterparty	Expiration Date		Notional Amount (000)			Value		Premiums Paid (Received)		Unrealized Appreciation (Depreciation)
Call
5Y-30Y CMS Index Cap		0.30	%	Citibank N.A.		2/14/22		USD	77,750	$	167,640	$	136,820	$	30,820
Put
5Y-30Y CMS Index Floor		0.40		Nomura International PLC		6/29/20		USD	19,780	$	29,868	$	21,233	$	8,635
5Y-30Y CMS Index Floor		0.35		Nomura International PLC		7/08/20		USD	20,060		8,477		18,054		(9,577	)
										$	38,345	$	39,287	$	(942	)
										$	205,985	$	176,107	$	29,878

Exchange-Traded Options Purchased

Description	Number of Contracts		Expiration Date		Exercise Price			Notional Amount (000)			Value
Call
10-Year U.S. Treasury Note Future		42		04/24/20		USD	133.00		USD	5,825	$	242,156
90-Day Euro Future		488		12/13/21		USD	99.75		USD	48,641		207,400
												449,556
Put
10-Year U.S. Treasury Note Future		35		04/24/20		USD	134.00		USD	4,854		3,828
90-Day Euro Future		102		06/12/20		USD	98.25		USD	10,161	$	638
												4,466
											$	454,022

OTC Interest Rate Swaptions Purchased

Paid by the Trust

Received by the Trust

Counterparty

Expiration Date

Exercise Rate

Notional Amount (000)

Value

Description

Rate

Frequency

Rate

Frequency

Call

2-Year Interest Rate Swap, 06/03/22

3-Month LIBOR, 1.45

%

Quarterly

1.50

%

Semi-Annual

Barclays Bank PLC

06/01/20

1.50

%

USD

14,696

$

334,125

15-Year Interest Rate Swap, 08/10/35

6-Month JPY LIBOR, (0.01)

%

Semi-Annual

0.65

Semi-Annual

Barclays Bank PLC

06/08/20

0.65

JPY

125,000

97,168

2-Year Interest Rate Swap, 08/12/22

3-Month LIBOR, 1.45

%

Quarterly

1.25

Semi-Annual

Bank of America N.A.

08/10/20

1.25

USD

42,990

799,565

10-Year Interest Rate Swap, 09/05/30

3-Month LIBOR, 1.45

%

Quarterly

0.95

Semi-Annual

Bank of America N.A.

09/03/20

0.95

USD

4,210

149,424

5-Year Interest Rate Swap, 09/06/25

3-Month LIBOR, 1.45

%

Quarterly

0.60

Semi-Annual

Morgan Stanley & Co. International PLC

09/04/20

0.60

USD

5,810

64,642

15-Year Interest Rate Swap, 09/16/35

6-Month JPY LIBOR, (0.01)

%

Semi-Annual

0.66

Semi-Annual

Morgan Stanley & Co. International PLC

09/14/20

0.66

JPY

50,000

39,417

15-Year Interest Rate Swap, 09/16/35

6-Month JPY LIBOR, (0.01)

%

Semi-Annual

0.66

Semi-Annual

Barclays Bank PLC

09/14/20

0.66

JPY

50,000

39,417

2-Year Interest Rate Swap, 09/25/22

3-Month LIBOR, 1.45

%

Quarterly

1.20

Semi-Annual

Barclays Bank PLC

09/23/20

1.20

USD

42,770

751,279

34

Schedule of Investments  (unaudited) (continued) March 31, 2020 BlackRock Core Bond Trust (BHK)     

OTC Interest Rate Swaptions Purchased (continued)

	Paid by the Trust				Received by the Trust				Counterparty	Expiration Date		Exercise Rate			Notional Amount (000)			Value
Description	Rate			Frequency	Rate			Frequency
Call
20-Year Interest Rate Swap, 04/18/41		6-Month JPY LIBOR, (0.01)	%	Semi-Annual		0.78	%	Semi-Annual	JPMorgan Chase Bank N.A.		04/16/21		0.78	%		JPY	105,700	$	126,115
10-Year Interest Rate Swap, 03/02/32		3-Month LIBOR, 1.45	%	Quarterly		1.21		Semi-Annual	Goldman Sachs Bank USA		02/28/22		1.21			USD	3,900		236,494
10-Year Interest Rate Swap, 03/09/34		3-Month LIBOR, 1.45	%	Quarterly		2.98		Semi-Annual	Barclays Bank PLC		03/07/24		2.98			USD	3,511		710,023
10-Year Interest Rate Swap, 03/14/34		3-Month LIBOR, 1.45	%	Quarterly		2.95		Semi-Annual	Barclays Bank PLC		03/12/24		2.95			USD	3,510		700,848
1-Year Interest Rate Swap, 11/07/25		3-Month LIBOR, 1.45	%	Quarterly		1.77		Semi-Annual	JPMorgan Chase Bank N.A.		11/05/24		1.77			USD	23,790		281,328
10-Year Interest Rate Swap 02/27/35		3-Month LIBOR, 1.45	%	Quarterly		1.49		Semi-Annual	Citibank N.A.		02/25/25		1.49			USD	2,570		217,712
10-Year Interest Rate Swap 06/29/38		6-Month LIBOR, 1.18	%	Quarterly		3.05		Semi-Annual	Deutsche Bank AG		06/27/28		3.05			USD	3,125		657,920
10-Year Interest Rate Swap, 01/12/39		3-Month LIBOR, 1.45	%	Quarterly		3.04		Semi-Annual	Nomura International PLC		01/10/29		3.04			USD	1,000		202,209
10-Year Interest Rate Swap, 01/13/39		3-Month LIBOR, 1.45	%	Quarterly		3.04		Semi-Annual	Morgan Stanley & Co. International PLC		01/11/29		3.04			USD	1,000		202,027
10-Year Interest Rate Swap, 01/31/39		3-Month LIBOR, 1.45	%	Quarterly		3.08		Semi-Annual	Barclays Bank PLC		01/29/29		3.08			USD	1,020		209,851
10-Year Interest Rate Swap, 04/29/48		3-Month LIBOR, 1.45	%	Quarterly		2.99		Semi-Annual	JPMorgan Chase Bank N.A.		04/27/38		2.99			USD	910		179,690
10-Year Interest Rate Swap, 02/24/39		3-Month LIBOR, 1.45	%	Quarterly		2.86		Semi-Annual	JPMorgan Chase Bank N.A.		02/22/39		2.86			USD	933		176,531
																			6,175,785
Put
15-Year Interest Rate Swap, 05/17/35		1.10	%	Semi-Annual		6-Month JPY LIBOR, (0.01)	%	Semi-Annual	Barclays Bank PLC		05/15/20		1.10	%		JPY	250,000	$	2
10-Year Interest Rate Swap, 05/21/30		1.72		Semi-Annual		3-Month LIBOR, 1.45	%	Quarterly	Citibank N.A.		05/19/20		1.72			USD	2,628		237
15-Year Interest Rate Swap, 06/10/35		0.65		Semi-Annual		6-Month JPY LIBOR, -0.01	%	Semi-Annual	Barclays Bank PLC		06/08/20		0.65			JPY	125,000		89
2-Year Interest Rate Swap, 06/24/22		0.00		Annual		6-Month EURIBOR, (0.29)	%	Semi-Annual	JPMorgan Chase Bank N.A.		06/22/20		0.00			EUR	28,788		1,956
2-Year Interest Rate Swap, 06/25/22		0.00		Annual		6-Month EURIBOR, (0.29)	%	Semi-Annual	Bank of America N.A.		06/23/20		0.00			EUR	10,799		741
2-Year Interest Rate Swap, 06/26/22		0.00		Annual		6-Month EURIBOR, (0.29)	%	Semi-Annual	Bank of America N.A.		06/24/20		0.00			EUR	10,799		745

35

Schedule of Investments  (unaudited) (continued) March 31, 2020 BlackRock Core Bond Trust (BHK)     

OTC Interest Rate Swaptions Purchased (continued)

	Paid by the Trust				Received by the Trust				Counterparty	Expiration Date		Exercise Rate			Notional Amount (000)		Value
Description	Rate			Frequency	Rate			Frequency
2-Year Interest Rate Swap, 06/28/22		0.00	%	Annual		6-Month EURIBOR, (0.29)	%	Semi-Annual	Bank of America N.A.		06/26/20		0.00	%	EUR	10,799	$	751
10-Year Interest Rate Swap, 07/15/30		2.35		Semi-Annual		3-Month LIBOR, 1.45	%	Quarterly	Citibank N.A.		07/13/20		2.35		USD	8,745		676
10-Year Interest Rate Swap, 08/29/30		1.24		Semi-Annual		3-Month LIBOR, 1.45	%	Quarterly	Bank of America N.A.		08/27/20		1.24		USD	5,610		28,009
30-Year Interest Rate Swap, 09/06/50		1.35		Semi-Annual		3-Month LIBOR, 1.45	%	Quarterly	Deutsche Bank AG		09/04/20		1.35		USD	1,075		23,444
15-Year Interest Rate Swap, 09/16/35		0.66		Semi-Annual		6-Month JPY LIBOR, (0.01)	%	Semi-Annual	Barclays Bank PLC		09/14/20		0.66		JPY	50,000		172
15-Year Interest Rate Swap, 09/16/35		0.66		Semi-Annual		6-Month JPY LIBOR, (0.01)	%	Semi-Annual	Morgan Stanley & Co. International PLC		09/14/20		0.66		JPY	50,000		172
20-Year Interest Rate Swap, 04/18/41		0.78		Semi-Annual		6-Month JPY LIBOR, (0.01)	%	Semi-Annual	JPMorgan Chase Bank N.A.		04/16/21		0.78		JPY	105,700		1,731
10-Year Interest Rate Swap, 01/13/32		1.25		Semi-Annual		6-Month JPY LIBOR, (0.01)	%	Semi-Annual	Credit Suisse International		01/11/22		1.25		JPY	250,000		504
10-Year Interest Rate Swap, 02/24/32		1.55		Semi-Annual		6-Month JPY LIBOR, (0.01)	%	Semi-Annual	Credit Suisse International		02/22/22		1.55		JPY	250,000		283
10-Year Interest Rate Swap, 03/02/32		1.21		Semi-Annual		3-Month LIBOR, 1.45	%	Quarterly	Goldman Sachs Bank USA		02/28/22		1.21		USD	3,900		85,512
10-Year Interest Rate Swap, 03/18/32		1.60		Semi-Annual		6-Month JPY LIBOR, (0.01)	%,	Semi-Annual	JPMorgan Chase Bank N.A.		03/16/22		1.60		JPY	250,000		267
10-Year Interest Rate Swap, 04/06/32		1.45		Semi-Annual		6-Month JPY LIBOR, (0.01)	%	Semi-Annual	JPMorgan Chase Bank N.A.		04/04/22		1.45		JPY	250,000		386
5-Year Interest Rate Swap, 05/05/27		3.25		Quarterly		6-Month LIBOR, 1.18	%	Semi-Annual	Goldman Sachs Bank USA		05/03/22		3.25		USD	10,130		(1,009)
30-Year Interest Rate Swap, 05/11/52		2.85		Semi-Annual		3-Month LIBOR, 1.45	%	Quarterly	Nomura International PLC		05/09/22		2.85		USD	4,750		25,613
10-Year Interest Rate Swap, 08/04/32		2.25		Semi-Annual		3-Month LIBOR, 1.45	%	Quarterly	JPMorgan Chase Bank N.A.		08/02/22		2.25		USD	4,160		23,305
10-Year Interest Rate Swap, 08/10/32		2.25		Semi-Annual		3-Month LIBOR, 1.45	%	Quarterly	Barclays Bank PLC		08/08/22		2.25		USD	4,270		24,232
10-Year Interest Rate Swap, 03/09/34		2.98		Semi-Annual		3-Month LIBOR, 1.45	%	Quarterly	Barclays Bank PLC		03/07/24		2.98		USD	3,511		17,970
10-Year Interest Rate Swap, 03/14/34		2.95		Semi-Annual		3-Month LIBOR, 1.45	%	Quarterly	Barclays Bank PLC		03/12/24		2.95		USD	3,510		18,668
10-Year Interest Rate Swap, 06/15/34		2.50		Semi-Annual		3-Month LIBOR, 1.45	%	Quarterly	Morgan Stanley & Co. International PLC		06/13/24		2.50		USD	3,950		39,362
10-Year Interest Rate Swap, 06/22/34		2.50		Semi-Annual		3-Month LIBOR, 1.45	%	Quarterly	Morgan Stanley & Co. International PLC		06/20/24		2.50		USD	3,950		39,595
1-Year Interest Rate Swap, 11/07/25		1.77		Semi-Annual		3-Month LIBOR, 1.45	%	Quarterly	JPMorgan Chase Bank N.A.		11/05/24		1.77		USD	23,790		45,004
10-Year Interest Rate Swap, 02/27/35		1.49		Semi-Annual		3-Month LIBOR, 1.45	%	Quarterly	Citibank N.A.		02/25/25		1.49		USD	2,570		86,364
10-Year Interest Rate Swap, 04/14/37		3.00		Semi-Annual		3-Month LIBOR, 1.45	%	Quarterly	JPMorgan Chase Bank N.A.		04/12/27		3.00		USD	2,590		30,040
10-Year Interest Rate Swap, 01/12/39		3.04		Semi-Annual		3-Month LIBOR, 1.45	%	Quarterly	Nomura International PLC		01/10/29		3.04		USD	1,000		14,511

36

Schedule of Investments  (unaudited) (continued) March 31, 2020 BlackRock Core Bond Trust (BHK)     

OTC Interest Rate Swaptions Purchased (continued)

Paid by the Trust

Received by the Trust

Counterparty

Expiration Date

Exercise Rate

Notional Amount (000)

Value

Description

Rate

Frequency

Rate

Frequency

Put

10-Year Interest Rate Swap, 01/13/39

3.04

%

Semi-Annual

3-Month LIBOR, 1.45

%

Quarterly

Morgan Stanley & Co. International PLC

01/11/29

3.04

%

USD

1,000

$

14,562

10-Year Interest Rate Swap, 01/31/39

3.08

Semi-Annual

3-Month LIBOR, 1.45

%

Quarterly

Barclays Bank PLC

01/29/29

3.08

USD

1,020

14,399

20-Year Interest Rate Swap, 08/11/53

4.00

Annual

6-Month EURIBOR, (0.32)

%

Semi-Annual

Barclays Bank PLC

08/09/33

4.00

EUR

2,410

31,780

10-Year Interest Rate Swap, 04/29/48

2.99

Semi-Annual

3-Month LIBOR, 1.45

%

Quarterly

JPMorgan Chase Bank N.A.

04/27/38

2.99

USD

910

24,514

10-Year Interest Rate Swap, 02/24/49

2.86

Semi-Annual

3-Month LIBOR, 1.45

%

Quarterly

JPMorgan Chase Bank N.A.

02/22/39

2.86

USD

933

27,164

621,751

$

6,797,536

Interest Rate Caps / Floors — Sold

Description	Exercise Rate			Counterparty	Expiration Date		Notional Amount (000)			Value			Premiums Paid (Received)			Unrealized Appreciation (Depreciation)
Call
5Y-30Y CMS Index Cap		0.55	%	Citibank N.A.		2/14/22		USD	38,875	$	(38,479	)	$	(33,044	)	$	(5,435	)
5Y-30Y CMS Index Cap		0.55		Citibank N.A.		2/14/22		USD	38,875		(38,479	)		(40,041	)		1,562
										$	(76,958	)	$	(73,085	)	$	(3,873	)
Put
5Y-30Y CMS Index Floor		0.30	%	Nomura International PLC		6/29/20		USD	39,570	$	(20,180	)	$	(26,111	)	$	5,931
5Y-30Y CMS Index Floor		0.25		Nomura International PLC		7/08/20		USD	40,130		(299	)		(20,065	)		19,766
										$	(20,479	)	$	(46,176	)	$	25,697
										$	(97,437	)	$	(119,261	)	$	21,824

Exchange-Traded Options Written

Description	Number of Contracts		Expiration Date		Exercise Price			Notional Amount (000)			Value
Call
10-Year U.S. Treasury Note Future		42		04/24/20		USD	134.00		USD	5,825	$	(201,469	)
90-Day Euro Future		244		12/13/21		USD	99.38		USD	24,321		(262,300	)
											$	(463,769	)

37

Schedule of Investments  (unaudited) (continued) March 31, 2020 BlackRock Core Bond Trust (BHK)     

OTC Interest Rate Swaptions Written

	Paid by the Trust				Received by the Trust				Counterparty	Expiration Date		Exercise Rate			Notional Amount (000)			Value
Description	Rate			Frequency	Rate			Frequency
Call
2-Year Interest Rate Swap, 04/16/22		2.88	%	Semi-Annual		3-Month LIBOR, 1.45	%	Quarterly	Deutsche Bank AG		04/14/20		2.88	%		USD	16,840	$	(824,529)
2-Year Interest Rate Swap, 04/19/22		2.94		Semi-Annual		3-Month LIBOR, 1.45	%	Quarterly	Bank of America N.A.		04/17/20		2.94			USD	16,540		(830,847)
2-Year Interest Rate Swap, 06/03/22		1.00		Semi-Annual		3-Month LIBOR, 1.45	%	Quarterly	Barclays Bank PLC		06/01/20		1.00			USD	29,393		(374,676)
10-Year Interest Rate Swap, 06/13/30		2.20		Semi-Annual		3-Month LIBOR, 1.45	%	Quarterly	Barclays Bank PLC		06/11/20		2.20			USD	5,250		(776,031)
2-Year Interest Rate Swap, 08/12/22		0.75		Semi-Annual		3-Month LIBOR, 1.45	%	Quarterly	Bank of America N.A.		08/10/20		0.75			USD	85,970		(743,614)
10-Year Interest Rate Swap, 08/19/30		1.20		Semi-Annual		3-Month LIBOR, 1.45	%	Quarterly	JPMorgan Chase Bank N.A.		08/17/20		1.20			USD	5,570		(299,352)
10-Year Interest Rate Swap, 08/21/30		1.25		Semi-Annual		3-Month LIBOR, 1.45	%	Quarterly	Bank of America N.A.		08/19/20		1.25			USD	5,560		(322,075)
10-Year Interest Rate Swap, 09/16/30		1.61		Semi-Annual		3-Month LIBOR, 1.45	%	Quarterly	Bank of America N.A.		09/14/20		1.61			USD	2,690		(243,251)
2-Year Interest Rate Swap, 09/25/22		0.70		Semi-Annual		3-Month LIBOR, 1.45	%	Quarterly	Barclays Bank PLC		09/23/20		0.70			USD	85,550		(657,847)
10-Year Interest Rate Swap, 11/04/30		1.63		Semi-Annual		3-Month LIBOR, 1.45	%	Quarterly	Bank of America N.A.		11/02/20		1.63			USD	2,680		(244,783)
10-Year Interest Rate Swap, 11/04/30		1.64		Semi-Annual		3-Month LIBOR, 1.45	%	Quarterly	UBS AG		11/02/20		1.64			USD	2,680		(247,232)
1-Year Interest Rate Swap, 11/07/21		1.58		Semi-Annual		3-Month LIBOR, 1.45	%	Quarterly	JPMorgan Chase Bank N.A.		11/05/20		1.58			USD	23,790		(303,257)
2-Year Interest Rate Swap, 12/13/22		1.54		Semi-Annual		3-Month LIBOR, 1.45	%	Quarterly	Goldman Sachs Bank USA		12/11/20		1.54			USD	12,580		(302,796)
2-Year Interest Rate Swap, 12/16/22		1.53		Semi-Annual		3-Month LIBOR, 1.45	%	Quarterly	Citibank N.A.		12/14/20		1.53			USD	12,580		(301,508)
10-Year Interest Rate Swap, 03/10/31		2.79		Semi-Annual		3-Month LIBOR, 1.45	%	Quarterly	Barclays Bank PLC		03/08/21		2.79			USD	5,266		(1,056,103)
1-Year Interest Rate Swap, 03/19/22		0.41		Semi-Annual		3-Month LIBOR, 1.45	%	Quarterly	Morgan Stanley & Co. International PLC		03/17/21		0.41			USD	23,790		(49,375)
10-Year Interest Rate Swap, 01/30/32		1.45		Semi-Annual		3-Month LIBOR, 1.45	%	Quarterly	Morgan Stanley & Co. International PLC		01/28/22		1.45			USD	4,010		(310,049)
5-Year Interest Rate Swap, 03/02/27		1.25		Semi-Annual		3-Month LIBOR, 1.45	%,	Quarterly	Barclays Bank PLC		02/28/22		1.25			USD	7,620		(271,349)
5-Year Interest Rate Swap, 09/14/27		(0.14)		Annual		6-Month EURIBOR, (0.29)	%	Semi-Annual	Barclays Bank PLC		09/12/22		(0.14)			EUR	2,720		(38,134)
5-Year Interest Rate Swap, 09/15/27		(0.04)		Annual		6-Month EURIBOR, (0.29)	%	Semi-Annual	Barclays Bank PLC		09/13/22		(0.04)			EUR	2,720		(46,017)
10-Year Interest Rate Swap, 03/14/39		3.05		Semi-Annual		3-Month LIBOR, 1.45	%	Quarterly	Barclays Bank PLC		03/12/29		3.05			USD	2,840		(576,549)
																		$	(8,819,374)

38

Schedule of Investments  (unaudited) (continued) March 31, 2020 BlackRock Core Bond Trust (BHK)     

OTC Interest Rate Swaptions Written (continued)

Paid by the Trust

Received by the Trust

Counterparty

Expiration Date

Exercise Rate

Notional Amount (000)

Value

Description

Rate

Frequency

Rate

Frequency

Put

1-Year Interest Rate Swap, 04/08/21

3-Month LIBOR, 1.45

%

Quarterly

2.32

%

Semi-Annual

Goldman Sachs Bank USA

04/06/20

2.32

%

USD

46,770

$

(1)

1-Year Interest Rate Swap, 04/08/21

3-Month LIBOR, 1.45

%

Quarterly

2.35

Semi-Annual

Goldman Sachs Bank USA

04/06/20

2.35

USD

46,770

0.00

2-Year Interest Rate Swap, 04/16/22

3-Month LIBOR, 1.45

%

Quarterly

2.88

Semi-Annual

Deutsche Bank AG

04/14/20

2.88

USD

16,840

0.00

2-Year Interest Rate Swap, 04/19/22

3-Month LIBOR, 1.45

%

Quarterly

2.94

Semi-Annual

Bank of America N.A.

04/17/20

2.94

USD

16,540

0.00

2-Year Interest Rate Swap, 05/07/22

3-Month LIBOR, 1.45

%

Quarterly

3.15

Semi-Annual

Goldman Sachs Bank USA

05/05/20

3.15

USD

8,800

0.00

15-Year Interest Rate Swap, 05/17/35

6-Month JPY LIBOR, (0.01)

%

Semi-Annual

2.10

Semi-Annual

Barclays Bank PLC

05/15/20

2.10

JPY

250,000

0.00

2-Year Interest Rate Swap, 05/20/22

3-Month LIBOR, 1.45

%

Quarterly

3.50

Semi-Annual

JPMorgan Chase Bank N.A.

05/18/20

3.50

USD

10,000

0.00

2-Year Interest Rate Swap, 05/24/22

3-Month LIBOR, 1.45

%

Quarterly

3.55

Semi-Annual

Deutsche Bank AG

05/22/20

3.55

USD

16,000

0.00

2-Year Interest Rate Swap, 05/31/22

3-Month LIBOR, 1.45

%

Quarterly

2.90

Semi-Annual

Deutsche Bank AG

05/29/20

2.90

USD

9,270

0.00

2-Year Interest Rate Swap, 05/31/22

3-Month LIBOR, 1.45

%

Quarterly

3.35

Semi-Annual

Goldman Sachs Bank USA

05/29/20

3.35

USD

13,040

0.00

2-Year Interest Rate Swap, 06/10/22

3-Month LIBOR, 1.45

%

Quarterly

3.45

Semi-Annual

Goldman Sachs Bank USA

06/08/20

3.45

USD

13,000

0.00

10-Year Interest Rate Swap, 06/13/30

3-Month LIBOR, 1.45

%

Quarterly

2.20

Semi-Annual

Barclays Bank PLC

06/11/20

2.20

USD

5,250

(217)

10-Year Interest Rate Swap, 06/17/30

3-Month LIBOR, 1.45

%

Quarterly

2.30

Semi-Annual

Citibank N.A.

06/15/20

2.30

USD

3,950

(137)

2-Year Interest Rate Swap, 06/17/22

3-Month LIBOR, 1.45

%

Quarterly

3.35

Semi-Annual

Goldman Sachs Bank USA

06/15/20

3.35

USD

8,300

0.00

2-Year Interest Rate Swap, 07/01/22

3-Month LIBOR, 1.45

%

Quarterly

3.20

Semi-Annual

Nomura International PLC

06/29/20

3.20

USD

23,185

0.00

39

Schedule of Investments  (unaudited) (continued) March 31, 2020 BlackRock Core Bond Trust (BHK)     

OTC Interest Rate Swaptions Written (continued)

Paid by the Trust

Received by the Trust

Counterparty

Expiration Date

Exercise Rate

Notional Amount (000)

Value

Description

Rate

Frequency

Rate

Frequency

Put

10-Year Interest Rate Swap, 07/12/30

3-Month LIBOR, 1.45

%

Quarterly

2.35

%

Semi-Annual

Nomura International PLC

07/10/20

2.35

%

USD

2,870

$

(202)

10-Year Interest Rate Swap, 07/15/30

3-Month LIBOR, 1.45

%

Quarterly

1.95

Semi-Annual

Citibank N.A.

07/13/20

1.95

USD

4,370

(1,193)

10-Year Interest Rate Swap, 07/29/30

3-Month LIBOR, 1.45

%

Quarterly

2.30

Semi-Annual

Goldman Sachs Bank USA

07/27/20

2.30

USD

4,040

(519)

5-Year Interest Rate Swap, 07/29/25

6-Month EURIBOR, (0.29)

%

Semi-Annual

0.00

Annual

Barclays Bank PLC

07/27/20

0.00

EUR

7,510

(14,238)

10-Year Interest Rate Swap, 08/05/30

3-Month LIBOR, 1.45

%

Quarterly

2.00

Semi-Annual

Barclays Bank PLC

08/03/20

2.00

USD

2,250

(802)

10-Year Interest Rate Swap, 08/09/30

3-Month LIBOR, 1.45

%

Quarterly

1.75

Semi-Annual

Bank of America N.A.

08/07/20

1.75

USD

2,040

(1,672)

10-Year Interest Rate Swap, 08/19/30

3-Month LIBOR, 1.45

%

Quarterly

1.60

Semi-Annual

JPMorgan Chase Bank N.A.

08/17/20

1.60

USD

5,570

(8,204)

10-Year Interest Rate Swap, 08/21/30

3-Month LIBOR, 1.45

%

Quarterly

1.65

Semi-Annual

Bank of America N.A.

08/19/20

1.65

USD

5,560

(7,152)

2-Year Interest Rate Swap, 08/26/22

3-Month LIBOR, 1.45

%

Quarterly

3.50

Semi-Annual

Barclays Bank PLC

08/24/20

3.50

USD

16,370

0.00

10-Year Interest Rate Swap, 09/16/30,

3-Month LIBOR, 1.45

%,

Quarterly

1.61

Semi-Annual

Bank of America N.A.

09/14/20

1.61

USD

2,690

(4,776)

10-Year Interest Rate Swap, 09/18/30,

3-Month LIBOR, 1.45

%,

Quarterly

1.76

Semi-Annual

Bank of America N.A.

09/16/20

1.76

USD

5,260

(6,105)

2-Year Interest Rate Swap, 09/26/22

3-Month LIBOR, 1.45

%

Quarterly

0.60

Semi-Annual

Deutsche Bank AG

09/24/20

0.60

USD

19,960

(6,291)

2-Year Interest Rate Swap, 09/27/22

3-Month LIBOR, 1.45

%

Quarterly

0.62

Semi-Annual

Deutsche Bank AG

09/25/20

0.62

USD

20,765

(5,530)

2-Year Interest Rate Swap, 10/04/22

3-Month LIBOR, 1.45

%

Quarterly

1.05

Semi-Annual

Goldman Sachs Bank USA

10/02/20

1.05

USD

12,050

(45)

2-Year Interest Rate Swap, 10/04/22

3-Month LIBOR, 1.45

%

Quarterly

1.05

Semi-Annual

Goldman Sachs Bank USA

10/02/20

1.05

USD

12,050

(45)

2-Year Interest Rate Swap, 10/07/22

3-Month LIBOR, 1.45

%

Quarterly

1.00

Semi-Annual

Deutsche Bank AG

10/05/20

1.00

USD

12,050

(84)

40

Schedule of Investments  (unaudited) (continued) March 31, 2020 BlackRock Core Bond Trust (BHK)     

OTC Interest Rate Swaptions Written (continued)

Paid by the Trust

Received by the Trust

Counterparty

Expiration Date

Exercise Rate

Notional Amount (000)

Value

Description

Rate

Frequency

Rate

Frequency

Put

2-Year Interest Rate Swap, 10/07/22

3-Month LIBOR, 1.45

%,

Quarterly

1.00

%

Semi-Annual

Deutsche Bank AG

10/05/20

1.00

%

USD

11,215

$

(78)

2-Year Interest Rate Swap, 10/15/22

3-Month LIBOR, 1.45

%

Quarterly

0.70

Semi-Annual

Deutsche Bank AG

10/13/20

0.70

USD

9,825

(1,641)

2-Year Interest Rate Swap, 10/15/22

3-Month LIBOR, 1.45

%

Quarterly

0.70

Semi-Annual

Deutsche Bank AG

10/13/20

0.70

USD

14,160

(24)

2-Year Interest Rate Swap, 10/15/22

3-Month LIBOR, 1.45

%

Quarterly

0.70

Semi-Annual

Deutsche Bank AG

10/13/20

0.70

USD

9,425

(1,574)

2-Year Interest Rate Swap, 10/15/22

3-Month LIBOR, 1.45

%

Quarterly

0.75

Semi-Annual

Deutsche Bank AG

10/13/20

0.75

USD

12,770

(1,351)

2-Year Interest Rate Swap, 10/16/22

3-Month LIBOR, 1.45

%

Quarterly

0.65

Semi-Annual

Barclays Bank PLC

10/14/20

0.65

USD

11,365

(2,962)

10-Year Interest Rate Swap, 11/04/30

3-Month LIBOR, 1.45

%

Quarterly

1.63

Semi-Annual

Bank of America N.A.

11/02/20

1.63

USD

2,680

(6,717)

10-Year Interest Rate Swap, 11/04/30

3-Month LIBOR, 1.45

%

Quarterly

1.64

Semi-Annual

UBS AG

11/02/20

1.64

USD

2,680

(6,538)

1-Year Interest Rate Swap, 11/07/21

3-Month LIBOR, 1.45

%

Quarterly

1.58

Semi-Annual

JPMorgan Chase Bank N.A.

11/05/20

1.58

USD

23,790

0.00

2-Year Interest Rate Swap, 11/29/22

3-Month LIBOR, 1.45

%

Quarterly

2.00

Semi-Annual

Barclays Bank PLC

11/27/20

2.00

USD

25,750

0.00

2-Year Interest Rate Swap, 12/13/22

3-Month LIBOR, 1.45

%

Quarterly

1.54

Semi-Annual

Goldman Sachs Bank USA

12/11/20

1.54

USD

12,580

(8)

2-Year Interest Rate Swap, 12/16/22

3-Month LIBOR, 1.45

%

Quarterly

1.53

Semi-Annual

Citibank N.A.

12/14/20

1.53

USD

12,580

(9)

2-Year Interest Rate Swap, 12/23/22

3-Month LIBOR, 1.45

%

Quarterly

3.05

Semi-Annual

Nomura International PLC

12/21/20

3.05

USD

9,510

0.00

2-Year Interest Rate Swap, 12/31/22

3-Month LIBOR, 1.45

%

Quarterly

3.25

Semi-Annual

Citibank N.A.

12/29/20

3.25

USD

14,110

0.00

10-Year Interest Rate Swap, 03/10/31

3-Month LIBOR, 1.45

%

Quarterly

2.79

Semi-Annual

Barclays Bank PLC

03/08/21

2.79

USD

5,266

(1,777)

41

Schedule of Investments  (unaudited) (continued) March 31, 2020 BlackRock Core Bond Trust (BHK)     

OTC Interest Rate Swaptions Written (continued)

Paid by the Trust

Received by the Trust

Counterparty

Expiration Date

Exercise Rate

Notional Amount (000)

Value

Description

Rate

Frequency

Rate

Frequency

Put

2-Year Interest Rate Swap, 03/10/23

6-Month EURIBOR, (0.29)

%

Semi-Annual

0.30

%

Annual

JPMorgan Chase Bank N.A.

03/08/21

0.30

%

EUR

12,880

$

(2,093)

1-Year Interest Rate Swap, 03/19/22

3-Month LIBOR, 1.45

%

Quarterly

0.41

Semi-Annual

Morgan Stanley & Co. International PLC

03/17/21

0.41

USD

23,790

(21,051)

2-Year Interest Rate Swap, 03/31/23

6-Month EURIBOR, (0.29)

%

Semi-Annual

0.10

Annual

Barclays Bank PLC

03/29/21

0.10

EUR

18,360

(7,699)

2-Year Interest Rate Swap, 04/10/23

6-Month EURIBOR, (0.29)

%

Semi-Annual

0.12

Annual

Barclays Bank PLC

04/08/21

0.12

EUR

28,360

(11,620)

2-Year Interest Rate Swap, 04/14/23

6-Month EURIBOR, (0.29)

%

Semi-Annual

0.10

Annual

Citibank N.A.

04/12/21

0.10

EUR

14,250

(6,518)

2-Year Interest Rate Swap, 04/14/23

6-Month EURIBOR, (0.29)

%

Semi-Annual

0.16

Annual

Goldman Sachs Bank USA

04/12/21

0.16

EUR

14,250

(5,060)

10-Year Interest Rate Swap, 04/21/31

6-Month EURIBOR, (0.29

%),

Semi-Annual

2.15

Annual

JPMorgan Chase Bank N.A.

04/19/21

2.15

EUR

4,400

(1,780)

2-Year Interest Rate Swap, 04/21/23

6-Month EURIBOR, (0.29)

%

Semi-Annual

0.15

Annual

Morgan Stanley & Co. International PLC

04/19/21

0.15

EUR

14,050

(5,455)

10-Year Interest Rate Swap, 05/06/21

6-Month EURIBOR, (0.29)

%

Semi-Annual

2.00

Annual

Barclays Bank PLC

05/04/21

2.00

EUR

2,700

(1,556)

1-Year Interest Rate Swap, 05/19/22

3-Month LIBOR, 1.45

%,

Quarterly

2.35

Semi-Annual

Citibank N.A.

05/17/21

2.35

USD

45,470

0.00

2-Year Interest Rate Swap, 05/19/23

6-Month EURIBOR, (0.29)

%

Semi-Annual

0.11

Annual

Barclays Bank PLC

05/17/21

0.11

EUR

9,299

(5,050)

1-Year Interest Rate Swap, 05/29/22

3-Month LIBOR, 1.45

%

Quarterly

2.15

Semi-Annual

Barclays Bank PLC

05/27/21

2.15

USD

62,210

(1)

2-Year Interest Rate Swap, 06/02/23

6-Month EURIBOR, (0.29)

%

Semi-Annual

0.08

Annual

Morgan Stanley & Co. International PLC

05/31/21

0.08

EUR

6,270

(4,136)

1-Year Interest Rate Swap, 06/03/22,

3-Month LIBOR, 1.45

%

Quarterly

2.40

Semi-Annual

Morgan Stanley & Co. International PLC

06/01/21

2.40

USD

77,400

(1)

10-Year Interest Rate Swap, 06/09/31

3-Month LIBOR, 1.45

%

Quarterly

3.87

Semi-Annual

Barclays Bank PLC

06/07/21

3.87

USD

8,000

(603)

30-Year Interest Rate Swap, 06/09/51

6-Month LIBOR, 1.18

%

Semi-Annual

3.80

Quarterly

Barclays Bank PLC

06/07/21

3.80

USD

3,780

1,841

42

Schedule of Investments  (unaudited) (continued) March 31, 2020 BlackRock Core Bond Trust (BHK)     

OTC Interest Rate Swaptions Written (continued)

Paid by the Trust

Received by the Trust

Counterparty

Expiration Date

Exercise Rate

Notional Amount (000)

Value

Description

Rate

Frequency

Rate

Frequency

Put

2-Year Interest Rate Swap, 06/12/23

6-Month EURIBOR, (0.29)

%

Semi-Annual

0.05

%

Annual

Barclays Bank PLC

06/10/21

0.05

%

EUR

9,800

$

(7,653)

2-Year Interest Rate Swap, 06/16/23

6-Month EURIBOR, (0.29)

%

Semi-Annual

0.00

Annual

Barclays Bank PLC

06/14/21

0.00

EUR

4,310

(4,156)

2-Year Interest Rate Swap, 06/16/23

6-Month EURIBOR, (0.29)

%

Semi-Annual

0.00

Annual

Bank of America N.A.

06/14/21

0.00

EUR

4,430

(4,271)

2-Year Interest Rate Swap, 06/20/23

6-Month EURIBOR, (0.29)

%

Semi-Annual

0.00

Annual

Goldman Sachs Bank USA

06/18/21

0.00

EUR

4,460

(4,384)

2-Year Interest Rate Swap, 06/23/23

6-Month EURIBOR, (0.29)

%

Semi-Annual

0.00

Annual

Citibank N.A.

06/21/21

0.00

EUR

5,200

(5,172)

2-Year Interest Rate Swap, 06/27/23

6-Month EURIBOR, (0.29)

%

Semi-Annual

0.00

Annual

Nomura International PLC

06/25/21

0.00

EUR

4,880

(4,947)

2-Year Interest Rate Swap, 07/03/23

6-Month EURIBOR, (0.29)

%

Semi-Annual

0.00

Annual

Barclays Bank PLC

07/01/21

0.00

EUR

5,230

(5,442)

2-Year Interest Rate Swap, 07/04/23

6-Month EURIBOR, (0.29)

%

Semi-Annual

(0.05)

Annual

Barclays Bank PLC

07/02/21

(0.05)

EUR

5,120

(6,458)

2-Year Interest Rate Swap, 07/21/23

6-Month EURIBOR, (0.29)

%

Semi-Annual

0.00

Annual

Barclays Bank PLC

07/19/21

0.00

EUR

5,270

(5,906)

2-Year Interest Rate Swap, 08/11/23

6-Month EURIBOR, (0.29)

%

Semi-Annual

(0.15)

Annual

Barclays Bank PLC

08/09/21

(0.15)

EUR

12,480

(25,810)

2-Year Interest Rate Swap, 08/11/23

6-Month EURIBOR, (0.29)

%

Semi-Annual

(0.15)

Annual

Barclays Bank PLC

08/09/21

(0.15)

EUR

6,990

(14,456)

2-Year Interest Rate Swap, 09/05/23

6-Month EURIBOR, (0.29)

%

Semi-Annual

(0.25)

Annual

Barclays Bank PLC

09/03/21

(0.25)

EUR

22,950

(71,163)

10-Year Interest Rate Swap, 01/30/32

3-Month LIBOR, 1.45

%

Quarterly

1.95

Semi-Annual

Morgan Stanley & Co. International PLC

01/28/22

1.95

USD

4,010

(25,112)

10-Year Interest Rate Swap, 02/24/32

3-Month LIBOR, 1.45

%

Quarterly

1.85

Semi-Annual

Bank of America N.A.

02/22/22

1.85

USD

2,970

(23,122)

10-Year Interest Rate Swap, 02/30/32

3-Month LIBOR, 1.45

%

Quarterly

1.60

Semi-Annual

Deutsche Bank AG

02/28/22

1.60

USD

2,840

(33,933)

43

Schedule of Investments  (unaudited) (continued) March 31, 2020 BlackRock Core Bond Trust (BHK)     

OTC Interest Rate Swaptions Written (continued)

Paid by the Trust

Received by the Trust

Counterparty

Expiration Date

Exercise Rate

Notional Amount (000)

Value

Description

Rate

Frequency

Rate

Frequency

Put

5-Year Interest Rate Swap, 03/02/27

3-Month LIBOR, 1.45

%

Quarterly

1.25

%

Semi-Annual

Barclays Bank PLC

02/28/22

1.25

%

USD

7,620

$

(47,811)

10-Year Interest Rate Swap, 03/05/32

3-Month LIBOR, 1.45

%,

Quarterly

1.60

Semi-Annual

Deutsche Bank AG

03/03/22

1.60

USD

2,840

(34,114)

10-Year Interest Rate Swap, 03/06/32

3-Month LIBOR, 1.45

%,

Quarterly

1.60

Semi-Annual

Deutsche Bank AG

03/04/22

1.60

USD

4,485

(53,935)

10-Year Interest Rate Swap, 03/06/32

3-Month LIBOR, 1.45

%,

Quarterly

1.60

Semi-Annual

Barclays Bank PLC

03/04/22

1.60

USD

2,818

(33,888)

15-Year Interest Rate Swap, 05/05/35

6-Month LIBOR, 1.18

%,

Semi-Annual

3.25

Quarterly

Goldman Sachs Bank USA

05/03/22

3.25

USD

4,050

5,132

10-Year Interest Rate Swap, 05/11/32

3-Month LIBOR, 1.45

%,

Quarterly

2.75

Semi-Annual

Nomura International PLC

05/09/22

2.75

USD

10,350

(19,642)

10-Year Interest Rate Swap, 08/04/32

3-Month LIBOR, 1.45

%,

Quarterly

2.75

Semi-Annual

JPMorgan Chase Bank N.A.

08/02/22

2.75

USD

4,160

(10,316)

10-Year Interest Rate Swap, 08/04/32

3-Month LIBOR, 1.45

%,

Quarterly

3.25

Semi-Annual

JPMorgan Chase Bank N.A.

08/02/22

3.25

USD

4,160

(4,479)

10-Year Interest Rate Swap, 08/10/32

3-Month LIBOR, 1.45

%,

Quarterly

2.75

Semi-Annual

Barclays Bank PLC

08/08/22

2.75

USD

4,270

(10,771)

10-Year Interest Rate Swap, 08/10/32

3-Month LIBOR, 1.45

%,

Quarterly

3.25

Semi-Annual

Barclays Bank PLC

08/08/22

3.25

USD

4,270

(4,697)

5-Year Interest Rate Swap, 09/14/27

6-Month EURIBOR, -0.29

%,

Semi-Annual

(0.14)

Annual

Barclays Bank PLC

09/12/22

(0.14)

EUR

2,720

(53,409)

5-Year Interest Rate Swap, 09/15/27

6-Month EURIBOR, -0.29

%,

Semi-Annual

(0.04)

Annual

Barclays Bank PLC

09/13/22

(0.04)

EUR

2,720

(45,540)

10-Year Interest Rate Swap, 06/15/34

3-Month LIBOR, 1.45

%,

Quarterly

3.00

Semi-Annual

Morgan Stanley & Co. International PLC

06/13/24

3.00

USD

3,950

(21,872)

10-Year Interest Rate Swap, 06/15/34

3-Month LIBOR, 1.45

%,

Quarterly

3.50

Semi-Annual

Morgan Stanley & Co. International PLC

06/13/24

3.50

USD

3,950

(12,021)

44

Schedule of Investments  (unaudited) (continued) March 31, 2020 BlackRock Core Bond Trust (BHK)     

OTC Interest Rate Swaptions Written (continued)

	Paid by the Trust					Received by the Trust				Counterparty		Expiration Date		Exercise Rate			Notional Amount (000)			Value
Description	Rate			Frequency		Rate			Frequency
Put
10-Year Interest Rate Swap, 06/22/34		3-Month LIBOR, 1.45	%		Quarterly		3.00	%	Semi-Annual		Morgan Stanley & Co. International PLC		06/20/24		3.00	%		USD	3,950	$	(22,028	)
10-Year Interest Rate Swap, 06/22/34		3-Month LIBOR, 1.45	%		Quarterly		3.50		Semi-Annual		Morgan Stanley & Co. International PLC		06/20/24		3.50			USD	3,950		(12,122	)
10-Year Interest Rate Swap, 08/22/34		3-Month LIBOR, 1.45	%		Quarterly		2.25		Semi-Annual		Morgan Stanley & Co. International PLC		08/20/24		2.25			USD	4,410		(61,431	)
10-Year Interest Rate Swap, 03/14/39		3-Month LIBOR, 1.45	%		Quarterly		3.05		Semi-Annual		Barclays Bank PLC		03/12/29		3.05			USD	2,840		(41,703	)
																					(877,306	)
																				$	(9,696,680	)

Centrally Cleared Credit Default Swaps — Sell Protection

Reference Obligation/Index	Financing Rate Received by the Trust			Payment Frequency		Termination Date		Credit Rating (a)		Notional Amount (000) (b)			Value			Upfront Premium Paid (Received)		Unrealized Appreciation (Depreciation)
iTraxx.XO.31.V1		5.00	%		Quarterly		12/20/24		B		EUR	130	$	(2,702	)	$	7,777	$	(10,479	)

^(a) Using the rating of the issuer or the underlying securities of the index, as applicable, provided by S&P Global Ratings.

^(b) The maximum potential amount the Trust may pay should a negative credit event take place as defined under the terms of the agreement.

Centrally Cleared Interest Rate Swaps

Paid by the Trust		Received by the Trust		Effective Date			Termination Date		Notional Amount (000)		Value			Upfront Premium Paid (Received)		Unrealized Appreciation (Depreciation)
Rate	Frequency	Rate	Frequency
3-Month LIBOR, 1.45%	Quarterly	1.53%	Semi-Annual		N/A			11/22/20	USD	11,880	$	96,391		$	81	$	96,310
1.56	Semi-Annual	3-Month LIBOR, 1.45%	Quarterly		N/A			03/27/21	USD	5,660		(54,608	)		60		(54,668	)
1.77	Semi-Annual	3-Month LIBOR, 1.45%	Quarterly		06/15/20	(a)		06/15/21	USD	8,210		(113,599	)		88		(113,687	)
3-Month LIBOR, 1.45%	Quarterly	1.85	Semi-Annual		N/A			06/20/21	USD	6,130		130,234			44		130,190
3-Month LIBOR, 1.45%	Quarterly	1.88	Semi-Annual		N/A			08/01/21	USD	6,000		106,378			47		106,331
3-Month LIBOR, 1.45%	Quarterly	1.61	Semi-Annual		N/A			08/07/21	USD	6,340		88,857			51		88,806
3-Month LIBOR, 1.45%	Quarterly	1.53	Semi-Annual		N/A			08/09/21	USD	1,635		20,906			13		20,893
3-Month LIBOR, 1.45%	Quarterly	1.53	Semi-Annual		N/A			08/09/21	USD	1,635		20,991			13		20,978
2.58	Semi-Annual	3-Month LIBOR, 1.45%	Quarterly		N/A			08/29/21	USD	180		(5,346	)		2		(5,348	)
2.25	Semi-Annual	3-Month LIBOR, 1.45%	Quarterly		N/A			08/29/21	USD	2,000		(49,412	)		17		(49,429	)
2.15	Semi-Annual	3-Month LIBOR, 1.45%	Quarterly		N/A			09/05/21	USD	6,220		(149,541	)		52		(149,593	)
3-Month LIBOR, 1.45%	Quarterly	1.36	Semi-Annual		09/28/20	(a)		09/28/21	USD	3,500		36,516			37		36,479

45

Schedule of Investments  (unaudited) (continued) March 31, 2020 BlackRock Core Bond Trust (BHK)     

Centrally Cleared Interest Rate Swaps (continued)

Paid by the Trust		Received by the Trust		Effective			Termination		Notional					Upfront Premium Paid		Unrealized Appreciation
Rate	Frequency	Rate	Frequency	Date			Date		Amount (000)		Value			(Received)		(Depreciation)
(0.45)%	Monthly	6-Month EURIBOR, (0.29)%	Semi-Annual		N/A			12/16/21	EUR	5,440	$	13,977		$	63	$	13,914
3-Month LIBOR, 1.45%	Quarterly	1.59	Semi-Annual		N/A			12/24/21	USD	1,950		45,961			20		45,941
3-Month LIBOR, 1.45%	Quarterly	2.34	Semi-Annual		N/A			01/07/22	USD	14,500		490,225			149		490,076
3-Month LIBOR, 1.45%	Quarterly	1.76	Semi-Annual		N/A			01/10/22	USD	3,140		70,558			33		70,525
6-Month EURIBOR, (0.29)%	Semi-Annual	(0.30)	Monthly		N/A			01/16/22	EUR	11,040		8,466			289		8,177
3-Month LIBOR, 1.45%	Quarterly	2.51	Semi-Annual		N/A			02/11/22	USD	1,855		71,543			20		71,523
3-Month LIBOR, 1.45%	Quarterly	2.48	Semi-Annual		N/A			02/11/22	USD	1,855		70,617			20		70,597
2.56	Semi-Annual	3-Month LIBOR, 1.45%	Quarterly		N/A			02/14/22	USD	640		(25,441	)		7		(25,448	)
2.46	Semi-Annual	3-Month LIBOR, 1.45%	Quarterly		NA			02/28/22	USD	23,260		(895,555	)		264		(895,819	)
6-Month EURIBOR, (0.29)%	Semi-Annual	(0.48)	Monthly		N/A			03/05/22	EUR	5,950		(16,184	)		78		(16,262	)
6-Month EURIBOR, (0.29)%	Semi-Annual	(0.48)	Monthly		N/A			03/06/22	EUR	7,180		(19,845	)		95		(19,940	)
6-Month EURIBOR, (0.29)%	Semi-Annual	(0.49)	Monthly		N/A			03/09/22	EUR	4,550		(13,517	)		60		(13,577	)
(0.34)	Monthly	6-Month EURIBOR, (0.29)%	Semi-Annual		N/A			03/20/22	EUR	2,830		(347	)		38		(385	)
(0.35)	Monthly	6-Month EURIBOR, (0.29)	Semi-Annual		N/A			03/20/22	EUR	2,820		845			37		808
3-Month LIBOR, 1.45%	Quarterly	2.03	Semi-Annual		N/A			03/30/22	USD	1,914		60,394			22		60,372
3-Month LIBOR, 1.45%	Quarterly	0.33	Semi-Annual		04/06/21	(a)		04/06/22	USD	37,775		14,741			406		14,335
3-Month LIBOR, 1.45%	Quarterly	2.25	Semi-Annual		04/27/20	(a)		04/27/22	USD	21,850		798,763			256		798,507
3-Month LIBOR, 1.45%	Quarterly	0.42	Semi-Annual		05/04/20	(a)		05/04/22	USD	8,655		1,972			103		1,869
3-Month LIBOR, 1.45%	Quarterly	2.01	Semi-Annual		05/17/21	(a)		05/17/22	USD	756		12,901			2,243		10,658
1.87	Semi-Annual	6-Month LIBOR, 1.18%	Quarterly		06/03/21	(a)		06/03/22	USD	3,450		(54,099	)		37		(54,136	)
3-Month LIBOR, 1.45%	Quarterly	1.74	Semi-Annual		06/16/20	(a)		06/16/22	USD	7,810		218,767			91		218,676
6-Month EURIBOR, (0.29)%	Semi-Annual	(0.25)	Monthly		06/24/20	(a)		06/24/22	EUR	2,499		4,017			33		3,984
6-Month EURIBOR, (0.29)%	Semi-Annual	(0.29)	Monthly		06/25/20	(a)		06/25/22	EUR	937		672			12		660
6-Month EURIBOR, (0.29)%	Semi-Annual	(0.28)	Monthly		06/26/20	(a)		06/26/22	EUR	937		880			12		868
6-Month EURIBOR, (0.29)%	Semi-Annual	(0.28)	Monthly		06/30/20	(a)		06/30/22	EUR	938		987			13		974
3-Month LIBOR, 1.45%	Quarterly	0.66	Semi-Annual		09/08/20	(a)		09/08/22	USD	3,380		23,033			40		22,993
3-Month LIBOR, 1.45%	Quarterly	0.64	Semi-Annual		09/08/20	(a)		09/08/22	USD	3,380		21,683			40		21,643
3-Month LIBOR, 1.45%	Quarterly	0.67	Semi-Annual		09/08/20	(a)		09/08/22	USD	3,380		23,438			40		23,398
3-Month LIBOR, 1.45%	Quarterly	0.69	Semi-Annual		09/08/20	(a)		09/08/22	USD	3,380		25,058			40		25,018
3-Month LIBOR, 1.45%	Quarterly	0.44	Semi-Annual		09/11/20	(a)		09/11/22	USD	2,443		5,610			29		5,581
3-Month LIBOR, 1.45%	Quarterly	0.44	Semi-Annual		09/11/20	(a)		09/11/22	USD	2,269		5,278			27		5,251
3-Month LIBOR, 1.45%	Quarterly	0.46	Semi-Annual		09/11/20	(a)		09/11/22	USD	2,268		6,364			27		6,337
3-Month LIBOR, 1.45%	Quarterly	0.51	Semi-Annual		09/11/20	(a)		09/11/22	USD	3,490		13,004			41		12,963
(0.26)	Monthly	6-Month EURIBOR, (0.29)%	Semi-Annual		09/22/20	(a)		09/22/22	EUR	5,170		(7,517	)		69		(7,586	)
3-Month LIBOR, 1.45%	Quarterly	1.34	Semi-Annual		09/28/20	(a)		09/28/22	USD	6,240		126,681			73		126,608

46

Schedule of Investments  (unaudited) (continued) March 31, 2020 BlackRock Core Bond Trust (BHK)     

Centrally Cleared Interest Rate Swaps (continued)

Paid by the Trust		Received by the Trust		Effective			Termination		Notional					Upfront Premium Paid		Unrealized Appreciation
Rate	Frequency	Rate	Frequency	Date			Date		Amount (000)		Value			(Received)		(Depreciation)
3-Month LIBOR, 1.45%	Quarterly	0.36%	Semi-Annual		09/29/20	(a)		09/29/22	USD	12,635	$	8,220		$	150	$	8,070
3-Month LIBOR, 1.45%	Quarterly	0.36	Semi-Annual		09/29/20	(a)		09/29/22	USD	2,860		1,889			34		1,855
6-Month EURIBOR, (0.29)%	Semi-Annual	(0.33)	Monthly		10/02/20	(a)		10/02/22	EUR	6,310		(911	)		85		(996	)
3-Month LIBOR, 1.45%	Quarterly	0.35	Semi-Annual		10/02/20	(a)		10/02/22	USD	6,040		3,584			72		3,512
3-Month LIBOR, 1.45%	Quarterly	1.25	Semi-Annual		10/06/20	(a)		10/06/22	USD	7,335		135,264			86		135,178
6-Month EURIBOR, (0.29)%	Semi-Annual	(0.33)	Monthly		02/12/21	(a)		02/12/23	EUR	1,390		(784	)		19		(803	)
3-Month LIBOR, 1.45%	Quarterly	1.10	Semi-Annual		03/01/21	(a)		03/01/23	USD	13,390		201,203			159		201,044
3-Month LIBOR, 1.45%	Quarterly	1.05	Semi-Annual		03/01/21	(a)		03/01/23	USD	3,325		47,042			39		47,003
3-Month LIBOR, 1.45%	Quarterly	1.06	Semi-Annual		03/01/21	(a)		03/01/23	USD	3,325		47,308			39		47,269
3-Month LIBOR, 1.45%	Quarterly	1.07	Semi-Annual		03/01/21	(a)		03/01/23	USD	3,350		48,433			40		48,393
6-Month EURIBOR, -0.29	Semi-Annual	(0.41)	Monthly		03/02/21	(a)		03/02/23	EUR	2,450		(5,917	)		33		(5,950	)
3-Month LIBOR, 1.45%	Quarterly	0.88	Semi-Annual		03/02/21	(a)		03/02/23	USD	3,350		35,784			40		35,744
3-Month LIBOR, 1.45%	Quarterly	0.88	Semi-Annual		03/02/21	(a)		03/02/23	USD	6,700		71,636			80		71,556
3-Month LIBOR, 1.45%	Quarterly	0.88	Semi-Annual		03/02/21	(a)		03/02/23	USD	6,665		71,726			79		71,647
3-Month LIBOR, 1.45%	Quarterly	0.90	Semi-Annual		03/02/21	(a)		03/02/23	USD	3,350		37,556			40		37,516
3-Month LIBOR, 1.45%	Quarterly	0.98	Semi-Annual		03/02/21	(a)		03/02/23	USD	3,360		42,697			40		42,657
3-Month LIBOR, 1.45%	Quarterly	0.99	Semi-Annual		03/02/21	(a)		03/02/23	USD	3,360		43,267			40		43,227
6-Month EURIBOR, (0.29)%	Semi-Annual	(0.47)	Monthly		03/04/21	(a)		03/04/23	EUR	2,970		(11,221	)		40		(11,261	)
(0.17)	Monthly	6-Month EURIBOR, (0.29)%	Semi-Annual		03/24/21	(a)		03/24/23	EUR	11,815		(35,134	)		155		(35,289	)
(0.18)	Monthly	6-Month EURIBOR, (0.29)%	Semi-Annual		03/24/21	(a)		03/24/23	EUR	11,815		(33,493	)		155		(33,648	)
(0.18)	Monthly	6-Month EURIBOR, (0.29)%	Semi-Annual		03/24/21	(a)		03/24/23	EUR	11,800		(32,133	)		154		(32,287	)
(0.30)	Monthly	6-Month EURIBOR, (0.29)%	Semi-Annual		07/26/21	(a)		07/25/23	EUR	12,900		5,856			202		5,654
(0.29)	Monthly	6-Month EURIBOR, (0.29)%	Semi-Annual		07/26/21	(a)		07/26/23	EUR	14,350		3,343			226		3,117
6-Month EURIBOR, (0.29)%	Semi-Annual	(0.45)	Monthly		08/11/21	(a)		08/11/23	EUR	1,730		(6,865	)		27		(6,892	)
6-Month EURIBOR, (0.29)%	Semi-Annual	(0.58)	Monthly		08/17/21	(a)		08/17/23	EUR	1,760		(11,874	)		28		(11,902	)
1.61	Semi-Annual	3-Month LIBOR, 1.45%	Quarterly		11/01/21	(a)		11/01/23	USD	3,260		(77,422	)		38		(77,460	)
(0.17)	Monthly	6-Month EURIBOR, (0.29)%	Semi-Annual		12/13/21	(a)		12/13/23	EUR	5,190		(9,705	)		81		(9,786	)
(0.12)	Monthly	6-Month EURIBOR, (0.29)%	Semi-Annual		12/27/21	(a)		12/27/23	EUR	770		(2,278	)		12		(2,290	)
(0.05)	Monthly	6-Month EURIBOR, (0.29)%	Semi-Annual		01/03/22	(a)		01/03/24	EUR	2,735		(12,012	)		43		(12,055	)
(0.06)	Monthly	6-Month EURIBOR, (0.29)%	Semi-Annual		01/03/22	(a)		01/03/24	EUR	2,735		(11,613	)		43		(11,656	)
1.79	Semi-Annual	3-Month LIBOR, 1.45%	Quarterly		N/A			06/20/24	USD	2,510		(152,232	)		28		(152,260	)
1.80	Semi-Annual	3-Month LIBOR, 1.45%	Quarterly		N/A			10/10/24	USD	1,280		(81,329	)		15		(81,344	)

47

Schedule of Investments  (unaudited) (continued) March 31, 2020 BlackRock Core Bond Trust (BHK)     

Centrally Cleared Interest Rate Swaps (continued)

Paid by the Trust		Received by the Trust		Effective Date			Termination Date		Notional Amount (000)		Value			Upfront Premium Paid (Received)		Unrealized Appreciation (Depreciation)
Rate	Frequency	Rate	Frequency
(0.17)%	Monthly	6-Month EURIBOR, (0.29)%	Semi-Annual		N/A			11/11/24	EUR	1,160	$	(5,410	)	$	17	$	(5,427	)
(0.22)	Monthly	6-Month EURIBOR, (0.29)%	Semi-Annual		N/A			11/21/24	EUR	3,890		(8,558	)		57		(8,615	)
3-Month LIBOR, 1.45%	Quarterly	3.09	Semi-Annual		N/A			11/29/24	USD	18,950		2,446,167			233		2,445,934
6-Month EURIBOR, (0.29)%	Semi-Annual	(0.23)	Monthly		N/A			12/02/24	EUR	6,710		11,278			106		11,172
2.95	Semi-Annual	3-Month LIBOR, 1.45%	Quarterly		N/A			12/05/24	USD	1,429		(175,933	)		18		(175,951	)
2.86	Semi-Annual	3-Month LIBOR, 1.45%	Quarterly		N/A			12/13/24	USD	4,520		(542,003	)		56		(542,059	)
1.87	Semi-Annual	3-Month LIBOR, 1.45%	Quarterly		N/A			12/16/24	USD	3,180		(225,969	)		39		(226,008	)
2.57	Semi-Annual	3-Month LIBOR, 1.45%	Quarterly		N/A			01/06/25	USD	3,810		(378,202	)		47		(378,249	)
2.56	Semi-Annual	3-Month LIBOR, 1.45%	Quarterly		N/A			01/06/25	USD	3,810		(377,538	)		47		(377,585	)
3-Month LIBOR, 1.45%	Quarterly	2.52	Semi-Annual		N/A			02/28/25	USD	9,630		951,867			127		951,740
(0.18)	Monthly	6-Month EURIBOR, (0.29)%	Semi-Annual		N/A			03/18/25	EUR	270		(1,025	)		5		(1,030	)
2.16	Semi-Annual	3-Month LIBOR, 1.45%	Quarterly		N/A			03/31/25	USD	780		(63,918	)		10		(63,928	)
2.35	Semi-Annual	6-Month LIBOR, 1.18%	Quarterly		04/27/20	(a)		04/27/25	USD	5,870		(539,413	)		77		(539,490	)
3-Month LIBOR, 1.45%	Quarterly	0.76	Semi-Annual		09/08/20	(a)		09/08/25	USD	1,334		17,530			18		17,512
0.82	Semi-Annual	3-Month LIBOR, 1.45%	Quarterly		09/08/20	(a)		09/08/25	USD	2,570		(41,440	)		34		(41,474	)
6-Month JPY LIBOR, (0.01)%	Semi-Annual	0.37	Semi-Annual		N/A			01/29/28	JPY	181,730		52,279			22		52,257
6-Month JPY LIBOR, (0.01)%	Semi-Annual	0.36	Semi-Annual		N/A			07/31/28	JPY	113,000		33,457			15		33,442
0.19	Semi-Annual	6-Month JPY LIBOR, (0.01)%	Semi-Annual		N/A			01/04/29	JPY	100,000		(16,296	)		14		(16,310	)
1.37	Monthly	6-Month EURIBOR, (0.29)%	Semi-Annual		N/A			02/20/29	EUR	1,970		(287,991	)		41		(288,032	)
1.38	Monthly	6-Month EURIBOR, (0.29)%	Semi-Annual		N/A			02/22/29	EUR	590		(86,770	)		12		(86,782	)
6-Month EURIBOR, (0.29)%	Semi-Annual	0.56	Monthly		N/A			03/12/29	EUR	1,640		105,651			29		105,622
6-Month EURIBOR, (0.29)%	Semi-Annual	0.06	Monthly		N/A			07/26/29	EUR	930		12,152			17		12,135
0.19	Monthly	6-Month EURIBOR, (0.29)%	Semi-Annual		N/A			01/16/30	EUR	2,280		(57,293	)		470		(57,763	)
3-Month LIBOR, 1.45%	Quarterly	1.51	Semi-Annual		N/A			02/20/30	USD	685		52,586			11		52,575
3-Month LIBOR, 1.45%	Quarterly	1.48	Semi-Annual		N/A			02/24/30	USD	685		51,036			11		51,025
3-Month LIBOR, 1.45%	Quarterly	1.39	Semi-Annual		N/A			02/25/30	USD	308		20,128			5		20,123
3-Month LIBOR, 1.45%	Quarterly	1.40	Semi-Annual		N/A			02/25/30	USD	688		45,273			11		45,262

48

Schedule of Investments  (unaudited) (continued) March 31, 2020 BlackRock Core Bond Trust (BHK)     

Centrally Cleared Interest Rate Swaps (continued)

Paid by the Trust		Received by the Trust		Effective			Termination		Notional					Upfront Premium Paid		Unrealized Appreciation
Rate	Frequency	Rate	Frequency	Date			Date		Amount (000)		Value			(Received)		(Depreciation)
3-Month LIBOR, 1.45%	Quarterly	1.43%	Semi-Annual		N/A			02/25/30	USD	1,375	$	95,550		$	22	$	95,528
3-Month LIBOR, 1.45%	Quarterly	1.32	Semi-Annual		N/A			02/26/30	USD	1,375		80,387			22		80,365
3-Month LIBOR, 1.45%	Quarterly	1.26	Semi-Annual		N/A			02/27/30	USD	693		36,698			11		36,687
1.31	Semi-Annual	3-Month LIBOR, 1.45%	Quarterly		N/A			02/27/30	USD	2,770		(160,279	)		44		(160,323	)
3-Month LIBOR, 1.45%	Quarterly	1.32	Semi-Annual		N/A			02/27/30	USD	2,430		141,204			39		141,165
3-Month LIBOR, 1.45%	Quarterly	1.24	Semi-Annual		N/A			03/02/30	USD	1,390		70,698			22		70,676
3-Month LIBOR, 1.45%	Quarterly	0.56	Semi-Annual		N/A			03/11/30	USD	65		(869	)		1		(870	)
0.97	Semi-Annual	3-Month LIBOR, 1.45%	Quarterly		N/A			03/23/30	USD	288		(7,472	)		5		(7,477	)
1.02	Semi-Annual	3-Month LIBOR, 1.45%	Quarterly		N/A			03/23/30	USD	1,150		(35,383	)		18		(35,401	)
3-Month LIBOR, 1.45%	Quarterly	0.71	Semi-Annual		N/A			03/25/30	USD	1,130		185			18		167
3-Month LIBOR, 1.45%	Quarterly	0.76	Semi-Annual		N/A			03/27/30	USD	565		2,703			9		2,694
3-Month LIBOR, 1.45%	Quarterly	0.77	Semi-Annual		12/31/99	(a)		03/27/30	USD	565		3,564			9		3,555
3-Month LIBOR, 1.45%	Quarterly	0.73	Semi-Annual		04/15/20	(a)		04/15/30	USD	1,570		3,112			25		3,087
3-Month LIBOR, 1.45%	Quarterly	1.57	Semi-Annual		04/29/20	(a)		04/29/30	USD	1,550		130,993			25		130,968
1.76	Semi-Annual	3-Month LIBOR, 1.45%	Quarterly		07/09/20	(a)		07/09/30	USD	400		(41,504	)		6		(41,510	)
1.32	Semi-Annual	3-Month LIBOR, 1.45%	Quarterly		08/27/20	(a)		08/27/30	USD	4,310		(254,943	)		69		(255,012	)
3-Month LIBOR, 1.45%	Quarterly	1.02	Semi-Annual		09/08/20	(a)		09/08/30	USD	1,885		56,545			30		56,515
3-Month LIBOR, 1.45%	Quarterly	1.76	Semi-Annual		01/11/21	(a)		01/11/31	USD	760		76,204			12		76,192
3-Month LIBOR, 1.45%	Quarterly	2.45	Semi-Annual		05/18/21	(a)		05/18/31	USD	860		141,712			13		141,699
3-Month LIBOR, 1.45%	Quarterly	2.10	Semi-Annual		06/22/21	(a)		06/22/31	USD	430		56,030			7		56,023
0.52	Semi-Annual	6-Month JPY LIBOR, (0.01)%	Semi-Annual		11/30/21	(a)		11/30/31	JPY	95,000		(40,749	)		16		(40,765	)
1.11	Semi-Annual	3-Month LIBOR, 1.45%	Quarterly		03/08/22	(a)		03/08/32	USD	1,270		(35,906	)		20		(35,926	)
0.36	Semi-Annual	6-Month JPY LIBOR, (0.01)%	Semi-Annual		N/A			02/04/34	JPY	30,720		(11,129	)		4		(11,133	)
0.34	Semi-Annual	6-Month JPY LIBOR, (0.01)%	Semi-Annual		N/A			02/08/34	JPY	50,250		(16,966	)		8		(16,974	)
0.34	Semi-Annual	6-Month JPY LIBOR, (0.01)%	Semi-Annual		N/A			03/14/34	JPY	24,760		(8,426	)		4		(8,430	)
2.33	Semi-Annual	3-Month LIBOR, 1.45%	Quarterly		06/24/24	(a)		06/24/34	USD	310		(41,027	)		5		(41,032	)
1.65	Semi-Annual	6-Month LIBOR, 1.18%	Quarterly		08/22/24	(a)		08/22/34	USD	1,355		(90,182	)		21		(90,203	)
1.98	Semi-Annual	3-Month LIBOR, 1.45%	Quarterly		10/23/24	(a)		10/23/34	USD	660		(64,415	)		10		(64,425	)
1.98	Semi-Annual	3-Month LIBOR, 1.45%	Quarterly		10/23/24	(a)		10/23/34	USD	660		(64,762	)		10		(64,772	)
3-Month LIBOR, 1.45%	Quarterly	3.18	Semi-Annual		05/09/28	(a)		05/09/38	USD	1,590		319,042			24		319,018
3.08	Semi-Annual	6-Month LIBOR, 1.18%	Quarterly		06/29/28	(a)		06/29/38	USD	230		(43,970	)		3		(43,973	)
0.66	Semi-Annual	6-Month JPY LIBOR, (0.01)%	Semi-Annual		N/A			12/06/38	JPY	40,000		(37,966	)		8		(37,974	)

49

Schedule of Investments  (unaudited) (continued) March 31, 2020 BlackRock Core Bond Trust (BHK)     

Centrally Cleared Interest Rate Swaps (continued)

Paid by the Trust		Received by the Trust		Effective Date			Termination Date		Notional Amount (000)		Value			Upfront Premium Paid (Received)		Unrealized Appreciation (Depreciation)
Rate	Frequency	Rate	Frequency
0.62%	Semi-Annual	6-Month JPY LIBOR, (0.01)%	Semi-Annual		N/A			12/14/38	JPY	25,000	$	(21,913	)	$	5	$	(21,918	)
0.41	Semi-Annual	6-Month JPY LIBOR, (0.01)%	Semi-Annual		N/A			04/03/39	JPY	26,190		(13,748	)		5		(13,753	)
2.82	Semi-Annual	6-Month LIBOR, 1.18%	Quarterly		04/04/29	(a)		04/04/39	USD	3,000		(497,586	)		46		(497,632	)
0.33	Semi-Annual	6-Month JPY LIBOR, (0.01)%	Semi-Annual		12/31/99	(a)		06/10/39	JPY	27,540		(10,286	)		6		(10,292	)
0.30	Semi-Annual	6-Month JPY LIBOR, (0.01)%	Semi-Annual		N/A			06/17/39	JPY	25,860		(8,046	)		5		(8,051	)
0.17	Semi-Annual	6-Month JPY LIBOR, (0.01)%	Semi-Annual		N/A			08/08/39	JPY	22,870		(1,719	)		5		(1,724	)
1.01	Semi-Annual	6-Month LIBOR, 1.18%	Quarterly		04/02/30	(a)		04/02/40	USD	4,100		1,435			66		1,369
0.72	Semi-Annual	6-Month JPY LIBOR, (0.01)%	Semi-Annual		03/21/24	(a)		03/21/44	JPY	19,000		(18,342	)		4		(18,346	)
0.20	Semi-Annual	6-Month JPY LIBOR, (0.01)%	Semi-Annual		08/28/24	(a)		08/28/44	JPY	12,720		(39	)		3		(42	)
0.37	Semi-Annual	6-Month JPY LIBOR, (0.01)%	Semi-Annual		01/30/25	(a)		01/30/45	JPY	20,250		(6,191	)		5		(6,196	)
3.02	Semi-Annual	3-Month LIBOR, 1.45%	Quarterly		12/08/38	(a)		12/08/48	USD	400		(69,268	)		6		(69,274	)
2.38	Semi-Annual	3-Month LIBOR, 1.45%	Quarterly		07/05/39	(a)		07/05/49	USD	620		(73,191	)		10		(73,201	)
1.78	Semi-Annual	6-Month LIBOR, 1.18%	Quarterly		08/16/39	(a)		08/16/49	USD	500		(33,614	)		8		(33,622	)
1.71	Semi-Annual	3-Month LIBOR, 1.45%	Quarterly		08/16/39	(a)		08/16/49	USD	600		(36,487	)		9		(36,496	)
1.67	Semi-Annual	6-Month LIBOR, 1.18%	Quarterly		08/17/39	(a)		08/17/49	USD	460		(26,302	)		7		(26,309	)
1.25	Semi-Annual	3-Month LIBOR, 1.45%	Quarterly		12/31/99	(a)		03/06/50	USD	460		(43,752	)		11		(43,763	)
3-Month LIBOR, 1.45%	Quarterly	1.25	Semi-Annual		09/08/20	(a)		09/08/50	USD	441		42,348			10		42,338
3-Month LIBOR, 1.45%	Quarterly	1.93	Semi-Annual		12/01/26	(a)		12/01/56	USD	110		28,156			2		28,154
											$	2,013,361		$	9,956	$	2,003,405

^(a) Forward swap.

50

Schedule of Investments  (unaudited) (continued) March 31, 2020 BlackRock Core Bond Trust (BHK)     

OTC Credit Default Swaps — Buy Protection

Reference Obligation/Index	Financing Rate Paid by the Trust			Payment Frequency		Counterparty	Termination Date		Notional Amount (000)		Value			Upfront Premium Paid (Received)			Unrealized Appreciation (Depreciation)
Altice Finco SA		5.00	%		Quarterly	Credit Suisse International		12/20/24	EUR	20	$	(178	)	$	(2,582	)	$	2,404
Altice Finco SA		5.00			Quarterly	Credit Suisse International		12/20/24	EUR	20		(178	)		(2,134	)		1,956
											$	(356	)	$	(4,716	)	$	4,360

OTC Credit Default Swaps — Sell Protection

Reference Obligation/Index	Financing Rate Received by the Trust			Payment Frequency		Counterparty	Termination Date		Credit Rating (a)	Notional Amount (000) (b)			Value			Upfront Premium Paid (Received)			Unrealized Appreciation (Depreciation)
Casino Guichard Perrachon SA		1.00	%		Quarterly	Barclays Bank PLC		12/20/23	B		EUR	30	$	(6,088	)	$	(3,661	)	$	(2,427	)
Chesapeake Energy Corp.		5.00			Quarterly	Barclays Bank PLC		12/20/23	CCC-		USD	48		(42,000	)		69			(42,069	)
Chesapeake Energy Corp.		5.00			Quarterly	Barclays Bank PLC		12/20/23	CCC-		USD	208		(181,999	)		1,523			(183,522	)
Garfunkelux Holdco 2 SA		5.00			Quarterly	Credit Suisse International		12/20/24	B-		EUR	10		(2,797	)		(127	)		(2,670	)
Garfunkelux Holdco 2 SA		5.00			Quarterly	Credit Suisse International		12/20/24	B-		EUR	20		(5,594	)		0.00			(5,594	)
Garfunkelux Holdco 2 SA		5.00			Quarterly	Credit Suisse International		12/20/24	B-		EUR	10		(2,797	)		588			(3,385	)
Tesco PLC		1.00			Quarterly	Morgan Stanley & Co. International PLC		12/20/28	B		EUR	30		(1,850	)		(2,700	)		850
CMBX.NA.8		3.00			Annual	Barclays Bank PLC		10/17/57	BB+		USD	5,000		(1,195,006	)		(501,631	)		(693,375	)
CMBX.NA.8		3.00			Annual	Credit Suisse International		10/17/57	N/R		USD	2,500		(597,503	)		(248,102	)		(349,401	)
CMBX.NA.8		3.00			Annual	Morgan Stanley & Co. International PLC		10/17/57	N/R		USD	5,550		(1,326,456	)		(731,247	)		(595,209	)
CMBX.NA.9		3.00			Annual	Morgan Stanley & Co. International PLC		09/17/58	N/R		USD	9,450		(2,404,025	)		(1,152,161	)		(1,251,864	)
CMBX.NA.9		3.00			Annual	Credit Suisse International		09/17/58	N/R		USD	5,000		(1,271,971	)		(537,135	)		(734,836	)
CMBX.NA.9		3.00			Annual	Credit Suisse International		09/17/58	N/R		USD	5,000		(1,271,971	)		(537,135	)		(734,836	)
CMBX.NA.9		3.00			Annual	Credit Suisse International		09/17/58	N/R		USD	5,000		(1,271,971	)		(531,269	)		(740,702	)
CMBX.NA.9		3.00			Annual	Credit Suisse International		09/17/58	N/R		USD	5,000		(1,271,971	)		(537,083	)		(734,888	)
													$	(10,853,999	)	$	(4,780,071	)	$	(6,073,928	)

^(a) Using the rating of the issuer or the underlying securities of the index, as applicable, provided by S&P Global Ratings.

^(b) The maximum potential amount the Trust may pay should a negative credit event take place as defined under the terms of the agreement.

51

Schedule of Investments  (unaudited) (continued) March 31, 2020 BlackRock Core Bond Trust (BHK)     

Fair Value Hierarchy as of Period End

Various inputs are used in determining the fair value of investments and derivative financial instruments. These inputs to valuation techniques are categorized into a fair value hierarchy consisting of three broad levels for financial reporting purposes as follows:

• Level 1 — Unadjusted price quotations in active markets/exchanges for identical assets or liabilities that the Trust has the ability to access

• Level 2 — Other observable inputs (including, but not limited to, quoted prices for similar assets or liabilities in markets that are active, quoted prices for identical or similar assets or liabilities in markets that are not active, inputs other than quoted prices that are observable for the assets or liabilities (such as interest rates, yield curves, volatilities, prepayment speeds, loss severities, credit risks and default rates) or other market-corroborated inputs)

• Level 3 — Unobservable inputs based on the best information available in the circumstances, to the extent observable inputs are not available (including the BlackRock Global Valuation Methodologies Committee’s (the “Global Valuation Committee’s”) assumptions used in determining the fair value of investments and derivative financial instruments)

The hierarchy gives the highest priority to unadjusted quoted prices in active markets for identical assets or liabilities (Level 1 measurements) and the lowest priority to unobservable inputs (Level 3 measurements). Accordingly, the degree of judgment exercised in determining fair value is greatest for instruments categorized in Level 3. The inputs used to measure fair value may fall into different levels of the fair value hierarchy. In such cases, for disclosure purposes, the fair value hierarchy classification is determined based on the lowest level input that is significant to the fair value measurement in its entirety. Investments classified within Level 3 have significant unobservable inputs used by the Global Valuation Committee in determining the price for Fair Valued Investments. Level 3 investments include equity or debt issued by privately held companies or funds. There may not be a secondary market, and/or there are a limited number of investors. The categorization of a value determined for investments and derivative financial instruments is based on the pricing transparency of the investments and derivative financial instruments and is not necessarily an indication of the risks associated with investing in those securities. For information about the Trust’s policy regarding valuation of investments and derivative financial instruments, refer to the Trust’s most recent financial statements as contained in its annual report.

The following tables summarize the Trust’s investments and derivative financial instruments categorized in the disclosure hierarchy:

	Level 1		Level 2			Level 3		Total
Assets:
Investments:
Long-Term Investments:
Asset-Backed Securities	$	—	$	43,786,775		$	115,434	$	43,902,209
Corporate Bonds(a)		—		476,447,536			8,715,982		485,163,518
Floating Rate Loan Interests(a)		—		10,776,721			5,311,468		16,088,189
Foreign Agency Obligations(a)		—		22,425,770			—		22,425,770
Municipal Bonds(a)		—		25,482,147			—		25,482,147
Non-Agency Mortgage-Backed Securities		—		33,361,047			—		33,361,047
Preferred Securities(a)		6,458,055		67,258,481			—		73,716,536
U.S. Government Sponsored Agency Securities		—		158,822,326			—		158,822,326
U.S. Treasury Obligations		—		215,438,804			—		215,438,804
Short-Term Securities:
Money Market Funds		44,447,068		—			—		44,447,068
Options Purchased:
Interest rate contracts		454,022		7,003,521			—		7,457,543
Liabilities:
Investments:
TBA Sale Commitments		—		(39,212,151	)		—		(39,212,151	)
	$	51,359,145	$	1,021,590,977		$	14,142,884	$	1,087,093,006

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Schedule of Investments  (unaudited) (continued) March 31, 2020 BlackRock Core Bond Trust (BHK)     

Fair Value Hierarchy as of Period End (continued)

	Level 1			Level 2			Level 3		Total
Derivative Financial Instruments(b)
Assets:
Credit contracts	$	—		$	5,209		$	—	$	5,209
Foreign currency contracts		—			963,703			—		963,703
Interest rate contracts		6,318,492			8,527,657			—		14,846,149
Liabilities:
Credit contracts		—			(6,085,257	)		—		(6,085,257	)
Foreign currency contracts		—			(505,379	)		—		(505,379	)
Interest rate contracts		(1,735,281	)		(16,327,328	)		—		(18,062,609	)
	$	4,583,211		$	(13,421,395	)	$	—	$	(8,838,184	)

^(a)  See above Schedule of Investments for values in each industry, sector, state or country.

^(b)  Derivative financial instruments are swaps, futures contracts, forward foreign currency exchange contracts and options written. Swaps, futures contracts and forward foreign currency exchange contracts are valued at the unrealized appreciation (depreciation) on the instrument and options written are shown at value.

The Trust may hold assets and/or liabilities in which the fair value approximates the carrying amount or face value, including accrued interest, for financial statement purposes. As of period end, reverse repurchase agreements of $274,013,674 are categorized within as Level 2 the disclosure hierarchy.

A reconciliation of Level 3 Investments is presented when the Trust had a significant amount of Level 3 investments at the beginning and/or end of the year in relation to net assets. The following table is a reconciliation of Level 3 investments for which significant unobservable inputs were used in determining fair value:

	Asset-Backed Securities			Corporate Bonds			Floating Rate Loan Interests			Total
Assets:
Opening balance, as of December 31, 2019	$	1,640,060		$	8,618,085		$	845,594		$	11,103,739
Transfers into Level 3		—			—			4,181,349			4,181,349
Transfers out of Level 3		(1,500,000	)		—			—			(1,500,000	)
Accrued discounts/premiums		(36,315	)		—			962			(35,353	)
Net realized gain (loss)		—			—			(14,185	)		(14,185	)
Net change in unrealized appreciation (depreciation)(a)		11,689			138,117			(584,967	)		(435,161	)
Purchases		—			—			2,639,403			2,639,403
Sales		—			(40,220	)		(1,756,688	)		(1,796,908	)
Closing balance, as of March 31, 2020	$	115,434		$	8,715,982		$	5,311,468		$	14,142,884
Net change in unrealized appreciation (depreciation) on investments still held at of March 31, 2020(a)	$	11,689		$	138,117		$	(584,967	)	$	(435,161	)

^(a)  Any difference between net change in unrealized appreciation (depreciation) and net change in unrealized appreciation (depreciation) on investments still held at March 31, 2020 is generally due to investments no longer held or categorized as Level 3 at period end.

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Schedule of Investments  (unaudited) (continued) March 31, 2020 BlackRock Core Bond Trust (BHK)     

Fair Value Hierarchy as of Period End (continued)

The following table summarizes the valuation approaches used and unobservable inputs utilized by the BlackRock Global Valuation Methodologies Committee to determine the value of certain of the Trust’s Level 3 investments as of period end. The table does not include Level 3 investments with values based upon unadjusted third party pricing information in the amount of $ 5,426,902. A significant change in the third party information could result in a significantly lower or higher value of such Level 3 investments.

	Value		Valuation Approch		Unobservable Inputs		Range of unobservable Inputs Utilized (a)		Weighted Average of of Unobservable Inputs Based on Fair Value
Assets:
Corporate Bonds	$	8,715,982		Income		Credit Spread		170 - 535		365

^(a)  A significant change in unobservable input would have resulted in a correlated (inverse) significant change to value.

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