Patterson Public Finance Authority, California, Revenue Bonds, Community Facilities District 2001-1, Senior Series 2013A

_NXC

Nuveen California Select Tax-Free Income Portfolio

Portfolio of Investments December 31, 2020

(Unaudited)

Principal Amount (000)	Description (1)	Optional Call Provisions (2)	Ratings (3)	Value
	LONG-TERM INVESTMENTS – 98.1%
	MUNICIPAL BONDS – 98.1%
	Consumer Staples – 2.7%
$20	California County Tobacco Securitization Agency, Tobacco Settlement Asset-Backed Bonds, Los Angeles County Securitization Corporation, Series 2020A, 4.000%, 6/01/49	6/30 at 100.00	BBB+	$23,246
1,095	Golden State Tobacco Securitization Corporation, California, Tobacco Settlement Asset-Backed Bonds, Senior Convertible Series 2007A-2, 5.300%, 6/01/37	6/22 at 100.00	B-	1,141,855
100	Golden State Tobacco Securitization Corporation, California, Tobacco Settlement Asset-Backed Bonds, Series 2018A-1, 5.250%, 6/01/47	6/22 at 100.00	N/R	104,164
1,500	Tobacco Securitization Authority of Northern California, Tobacco Settlement Asset-Backed Bonds, Series 2005A-1, 5.500%, 6/01/45	1/21 at 100.00	B-	1,507,095
2,715	Total Consumer Staples			2,776,360
	Education and Civic Organizations – 1.2%
550	California Municipal Finance Authority, Charter School Revenue Bonds, Partnerships to Uplift Communities Project, Series 2012A, 5.250%, 8/01/42	8/22 at 100.00	BB	563,904
160	California Municipal Finance Authority, Charter School Revenue Bonds, Rocketship Education?Multiple Projects, Series 2014A, 7.250%, 6/01/43	6/22 at 102.00	N/R	174,056
60	California School Finance Authority, School Facility Revenue Bonds, Alliance for College-Ready Public Schools Project, Series 2016A, 5.000%, 7/01/46, 144A	7/25 at 100.00	BBB	68,071
385	California School Finance Authority, School Facility Revenue Bonds, Alliance for College-Ready Public Schools Project, Series 2016C, 5.000%, 7/01/46	7/25 at 101.00	BBB	440,332
1,155	Total Education and Civic Organizations			1,246,363
	Health Care – 7.7%
590	California Health Facilities Financing Authority, California, Revenue Bonds, Sutter Health, Refunding Series 2016B, 5.000%, 11/15/46	11/26 at 100.00	A+	704,761
1,000	California Health Facilities Financing Authority, California, Revenue Bonds, Sutter Health, Refunding Series 2017A, 5.000%, 11/15/48	11/27 at 100.00	A+	1,216,160
1,000	California Health Facilities Financing Authority, California, Revenue Bonds, Sutter Health, Series 2018A, 5.000%, 11/15/48	11/27 at 100.00	A+	1,216,160
1,000	California Health Facilities Financing Authority, Revenue Bonds, CommonSpirit Health, Series 2020A, 4.000%, 4/01/44	4/30 at 100.00	BBB+	1,158,920
115	California Health Facilities Financing Authority, Revenue Bonds, Lucile Salter Packard Children's Hospital, Series 2014A, 5.000%, 8/15/43	8/24 at 100.00	AA-	128,507
70	California Health Facilities Financing Authority, Revenue Bonds, Providence Health & Services, Refunding Series 2014A, 5.000%, 10/01/38	10/24 at 100.00	AA-	80,862
255	California Health Facilities Financing Authority, Revenue Bonds, Providence Health & Services, Series 2014B, 5.000%, 10/01/44	10/24 at 100.00	AA-	292,949
235	California Health Facilities Financing Authority, Revenue Bonds, Rady Children's Hospital - San Diego, Series 2011, 5.250%, 8/15/41	8/21 at 100.00	AA	241,183

NXC	Nuveen California Select Tax-Free Income Portfolio (continued)
	Portfolio of Investments December 31, 2020
	(Unaudited)

Principal Amount (000)	Description (1)	Optional Call Provisions (2)	Ratings (3)	Value
	Health Care (continued)
$35	California Municipal Finance Authority, Revenue Bonds, Eisenhower Medical Center, Refunding Series 2017A, 5.000%, 7/01/42	7/27 at 100.00	Baa2	$40,601
130	California Municipal Finance Authority, Revenue Bonds, NorthBay Healthcare Group, Series 2017A, 5.250%, 11/01/41	11/26 at 100.00	BBB-	150,386
350	California Statewide Communities Development Authority, California, Revenue Bonds, Loma Linda University Medical Center, Series 2014A, 5.250%, 12/01/34	12/24 at 100.00	BB	391,069
	California Statewide Communities Development Authority, California, Revenue Bonds, Loma Linda University Medical Center, Series 2016A:
825	5.000%, 12/01/46, 144A	6/26 at 100.00	BB	918,101
540	5.250%, 12/01/56, 144A	6/26 at 100.00	BB	607,813
670	San Buenaventura, California, Revenue Bonds, Community Memorial Health System, Series 2011, 7.500%, 12/01/41	12/21 at 100.00	BB	706,790
6,815	Total Health Care			7,854,262
	Housing/Multifamily – 2.9%
750	California Community Housing Agency, California, Essential Housing Revenue Bonds, Serenity at Larkspur Apartments, Series 2020A, 5.000%, 2/01/50, 144A	2/30 at 100.00	N/R	839,737
640	California Housing Finance Agency, Municipal Certificate Revenue Bonds, Class A Series 2019-2, 4.000%, 3/20/33	No Opt. Call	BBB+	722,018
93	California Housing Finance Agency, Municipal Certificate Revenue Bonds, Class A Series2019-1, 4.250%, 1/15/35	No Opt. Call	BBB+	107,847
	California Municipal Finance Authority, Mobile Home Park Revenue Bonds, Caritas Affordable Housing Inc Projects, Senior Series 2014A:
25	5.250%, 8/15/39	8/24 at 100.00	A-	27,867
65	5.250%, 8/15/49	8/24 at 100.00	A-	71,872
395	California Municipal Finance Authority, Mobile Home Park Revenue Bonds, Caritas Projects Series 2012A, 5.500%, 8/15/47	8/22 at 100.00	A-	416,287
650	CSCDA Community Improvement Authority, California, Essential Housing Revenue Bonds, Center City Anaheim, Series 2020A, 5.000%, 1/01/54, 144A	1/31 at 100.00	N/R	741,917
2,618	Total Housing/Multifamily			2,927,545
	Tax Obligation/General – 23.4%
1,000	California State, General Obligation Bonds, Various Purpose Refunding Series 2015, 5.000%, 8/01/34	8/25 at 100.00	Aa2	1,196,130
1,965	California State, General Obligation Bonds, Various Purpose Series 2011, 5.000%, 10/01/41	10/21 at 100.00	Aa2	2,030,867
2,000	California State, General Obligation Bonds, Various Purpose Series 2012, 5.250%, 4/01/35	4/22 at 100.00	Aa2	2,119,820
1,000	Chaffey Joint Union High School District, San Bernardino County, California, General Obligation Bonds, Election 2012 Series 2019D, 4.000%, 8/01/49	8/28 at 100.00	Aa1	1,167,600
1,000	Los Angeles Unified School District, Los Angeles County, California, General Obligation Bonds, Election 2008 Series 2018B-1, 5.250%, 7/01/42	1/28 at 100.00	AA+	1,260,890
7,575	Palomar Pomerado Health, California, General Obligation Bonds, Convertible Capital Appreciation, Election 2004 Series 2010A, 0.000%, 8/01/34	No Opt. Call	A2	5,518,539
1,000	San Benito High School District, San Benito and Santa Clara Counties, California, General Obligation Bonds, 2016 Election Series 2017, 5.250%, 8/01/46	8/27 at 100.00	Aa3	1,242,080

Principal Amount (000)	Description (1)	Optional Call Provisions (2)	Ratings (3)	Value
	Tax Obligation/General (continued)
$8,075	San Bernardino Community College District, California, General Obligation Bonds, Election of 2008 Series 2009B, 0.000%, 8/01/44	No Opt. Call	Aa1	$4,373,016
2,050	San Mateo County Community College District, California, General Obligation Bonds, Election 2014 Series 2018B, 5.000%, 9/01/45	9/28 at 100.00	AAA	2,605,653
2,000	West Hills Community College District, California, General Obligation Bonds, School Facilities Improvement District 3, 2008 Election Series 2011, 0.000%, 8/01/38 – AGM Insured (4)	8/31 at 100.00	AA	2,323,320
27,665	Total Tax Obligation/General			23,837,915
	Tax Obligation/Limited – 18.3%
1,000	Bell Community Redevelopment Agency, California, Tax Allocation Bonds, Bell Project Area, Series 2003, 5.625%, 10/01/33 – AGC Insured	2/21 at 100.00	AA	1,003,400
2,000	California State Public Works Board, Lease Revenue Bonds, Department of Corrections & Rehabilitation, Various Correctional Facilities Series 2013F, 5.250%, 9/01/33	9/23 at 100.00	Aa3	2,247,880
3,000	Golden State Tobacco Securitization Corporation, California, Enhanced Tobacco Settlement Asset-Backed Revenue Bonds, Refunding Series 2015A, 5.000%, 6/01/40	6/25 at 100.00	Aa3	3,489,030
1,215	Los Angeles Community Redevelopment Agency, California, Lease Revenue Bonds, Vermont Manchester Social Services Project, Series 2005, 5.000%, 9/01/37 – AMBAC Insured	2/21 at 100.00	Aa2	1,218,572
1,000	Los Angeles County Metropolitan Transportation Authority, California, Measure R Sales Tax Revenue Bonds, Senior Series 2016A, 5.000%, 6/01/38	6/26 at 100.00	AAA	1,216,760
3,000	Los Angeles County Metropolitan Transportation Authority, California, Proposition C Sales Tax Revenue Bonds, Senior Lien Series 2017A, 5.000%, 7/01/42	7/27 at 100.00	AAA	3,716,250
1,000	Norco Redevelopment Agency, California, Tax Allocation Bonds, Project Area 1, Series 2009, 7.000%, 3/01/34	2/21 at 100.00	A+	1,003,790
	Patterson Public Finance Authority, California, Revenue Bonds, Community Facilities District 2001-1, Senior Series 2013A:
350	5.250%, 9/01/30	9/23 at 100.00	N/R	385,154
320	5.750%, 9/01/39	9/23 at 100.00	N/R	351,863
60	Patterson Public Finance Authority, California, Revenue Bonds, Community Facilities District 2001-1, Subordinate Lien Series 2013B, 5.875%, 9/01/39	9/23 at 100.00	N/R	66,167
	Puerto Rico Sales Tax Financing Corporation, Sales Tax Revenue Bonds, Restructured 2018A-1:
705	0.000%, 7/01/46	7/28 at 41.38	N/R	219,001
763	5.000%, 7/01/58	7/28 at 100.00	N/R	852,195
30	Riverside County Redevelopment Agency, California, Tax Allocation Bonds, Jurupa Valley Project Area, Series 2011B, 6.500%, 10/01/25	10/21 at 100.00	A	31,399
20	San Clemente, California, Special Tax Revenue Bonds, Community Facilities District 2006-1 Marblehead Coastal, Series 2015, 5.000%, 9/01/40	9/25 at 100.00	N/R	22,673
60	San Francisco City and County Redevelopment Agency Successor Agency, California, Special Tax Bonds, Community Facilities District 7, Hunters Point Shipyard Phase One Improvements, Refunding Series 2014, 5.000%, 8/01/39	8/24 at 100.00	N/R	64,362
40	Signal Hill Redevelopment Agency, California, Project 1 Tax Allocation Bonds, Series 2011, 7.000%, 10/01/26	4/21 at 100.00	N/R	40,568

NXC	Nuveen California Select Tax-Free Income Portfolio (continued)
	Portfolio of Investments December 31, 2020
	(Unaudited)

Principal Amount (000)	Description (1)	Optional Call Provisions (2)	Ratings (3)	Value
	Tax Obligation/Limited (continued)
$1,285	Stockton Public Financing Authority, California, Revenue Bonds, Arch Road East Community Facility District 99-02, Series 2018A, 5.000%, 9/01/28	9/25 at 103.00	N/R	$1,510,428
50	Transbay Joint Powers Authority, California, Tax Allocation Bonds, Senior Green Series 2020A, 5.000%, 10/01/45	4/30 at 100.00	A-	62,520
1,000	Virgin Islands Public Finance Authority, Matching Fund Loan Notes Revenue Bonds, Series 2012A, 5.000%, 10/01/32 – AGM Insured	10/22 at 100.00	AA	1,067,820
16,898	Total Tax Obligation/Limited			18,569,832
	Transportation – 11.7%
60	California Municipal Finance Authority, Special Facility Revenue Bonds, United Airlines, Inc Los Angeles International Airport Project, Series 2019, 4.000%, 7/15/29 (AMT)	No Opt. Call	B+	65,285
530	Foothill/Eastern Transportation Corridor Agency, California, Toll Road Revenue Bonds, Refunding Junior Lien Series 2013C, 6.500%, 1/15/43	1/24 at 100.00	BBB+	607,656
	Foothill/Eastern Transportation Corridor Agency, California, Toll Road Revenue Bonds, Refunding Series 2013A:
1,000	5.000%, 1/15/42 – AGM Insured	1/24 at 100.00	AA	1,102,250
1,170	5.750%, 1/15/46	1/24 at 100.00	A-	1,316,472
800	Long Beach, California, Harbor Revenue Bonds, Series 2015D, 5.000%, 5/15/42	5/25 at 100.00	AA	924,216
1,525	Los Angeles Department of Airports, California, Revenue Bonds, Los Angeles International Airport, Subordinate Lien Series 2018A, 5.250%, 5/15/48 (AMT)	5/28 at 100.00	Aa3	1,864,419
2,315	Los Angeles Department of Airports, California, Revenue Bonds, Los Angeles International Airport, Subordinate Lien Series 2019F, 5.000%, 5/15/37 (AMT)	5/29 at 100.00	Aa3	2,928,475
955	Port of Oakland, California, Revenue Bonds, Refunding Series 2012P, 5.000%, 5/01/31 (AMT)	5/22 at 100.00	A+	1,013,971
1,000	San Diego County Regional Airport Authority, California, Airport Revenue Bonds, Subordinate Series 2019B, 5.000%, 7/01/49 (AMT)	7/29 at 100.00	A+	1,226,520
750	San Joaquin Hills Transportation Corridor Agency, Orange County, California, Toll Road Revenue Bonds, Refunding Junior Lien Series 2014B, 5.250%, 1/15/44	1/25 at 100.00	BBB+	837,713
10,105	Total Transportation			11,886,977
	U.S. Guaranteed – 9.6% (5)
410	California Health Facilities Financing Authority, California, Revenue Bonds, Sutter Health, Refunding Series 2016B, 5.000%, 11/15/46 (Pre-refunded 11/15/26)	11/26 at 100.00	N/R	521,873
2,500	California Health Facilities Financing Authority, California, Revenue Bonds, Sutter Health, Series 2016A, 5.000%, 11/15/41 (Pre-refunded 11/15/25)	11/25 at 100.00	A+	3,069,325
55	California Health Facilities Financing Authority, Revenue Bonds, Providence Health & Services, Refunding Series 2014A, 5.000%, 10/01/38 (Pre-refunded 10/01/24)	10/24 at 100.00	N/R	64,852
250	California Statewide Communities Development Authority, School Facility Revenue Bonds, Alliance College-Ready Public Schools, Series 2011A, 7.000%, 7/01/46 (Pre-refunded 7/01/21)	7/21 at 100.00	N/R	258,227
2,000	Escondido Joint Powers Financing Authority, California, Revenue Bonds, Water System Financing, Series 2012, 5.000%, 9/01/41 (Pre-refunded 3/01/22)	3/22 at 100.00	AA-	2,110,500
1,175	Foothill/Eastern Transportation Corridor Agency, California, Toll Road Revenue Bonds, Refunding Series 2013A, 6.000%, 1/15/53 (Pre-refunded 1/15/24)	1/24 at 100.00	A-	1,380,225

Principal Amount (000)	Description (1)	Optional Call Provisions (2)	Ratings (3)	Value
	U.S. Guaranteed (5) (continued)
$135	National City Community Development Commission, California, Tax Allocation Bonds, National City Redevelopment Project, Series 2011, 6.500%, 8/01/24 (Pre-refunded 8/01/21)	8/21 at 100.00	A	$139,900
50	Novato Redevelopment Agency, California, Tax Allocation Bonds, Hamilton Field Redevelopment Project, Series 2011, 6.750%, 9/01/40 (Pre-refunded 9/01/21)	9/21 at 100.00	N/R	52,151
160	Rancho Santa Fe CSD Financing Authority, California, Revenue Bonds, Superior Lien Series 2011A, 5.750%, 9/01/30 (Pre-refunded 9/01/21)	9/21 at 100.00	A-	165,835
1,365	San Diego County Regional Transportation Commission, California, Sales Tax Revenue Bonds, Refunding Series 2012A, 5.000%, 4/01/42 (Pre-refunded 4/01/22)	4/22 at 100.00	AAA	1,447,610
25	San Francisco Redevelopment Finance Authority, California, Tax Allocation Revenue Bonds, Mission Bay North Redevelopment Project, Series 2011C, 6.750%, 8/01/41 (Pre-refunded 2/01/21)	2/21 at 100.00	A-	25,119
	San Francisco Redevelopment Financing Authority, California, Tax Allocation Revenue Bonds, Mission Bay South Redevelopment Project, Series 2011D:
25	7.000%, 8/01/33 (Pre-refunded 2/01/21)	2/21 at 100.00	BBB+	25,123
30	7.000%, 8/01/41 (Pre-refunded 2/01/21)	2/21 at 100.00	BBB+	30,148
360	Turlock Public Financing Authority, California, Tax Allocation Revenue Bonds, Series 2011, 7.500%, 9/01/39 (Pre-refunded 3/01/21)	3/21 at 100.00	N/R	364,097
70	Yorba Linda Redevelopment Agency, Orange County, California, Tax Allocation Revenue Bonds, Yorba Linda Redevelopment Project, Subordinate Lien Series 2011A, 6.500%, 9/01/32 (Pre-refunded 9/01/21)	9/21 at 100.00	N/R	72,873
8,610	Total U.S. Guaranteed			9,727,858
	Utilities – 20.6%
1,000	Bay Area Water Supply and Conservation Agency, California, Revenue Bonds, Capital Cost Recovery Prepayment Program, Series 2013A, 5.000%, 10/01/34	4/23 at 100.00	AA-	1,097,390
1,480	California Infrastructure and Economic Development Bank, Clean Water State Revolving Fund Revenue Bonds, Green Series 2017, 5.000%, 10/01/33	4/27 at 100.00	AAA	1,878,904
	California Pollution Control Financing Authority, Water Furnishing Revenue Bonds, Poseidon Resources Channelside LP Desalination Project, Series 2012:
375	5.000%, 7/01/37 (AMT), 144A	7/22 at 100.00	BBB	399,015
1,160	5.000%, 11/21/45 (AMT), 144A	7/22 at 100.00	BBB	1,225,563
1,730	East Bay Municipal Utility District, Alameda and Contra Costa Counties, California, Water System Revenue Bonds, Green Series 2017A, 4.000%, 6/01/45	6/27 at 100.00	AAA	1,992,718
2,000	Irvine Ranch Water District, California, Certificates of Participation, Irvine Ranch Water District Series 2016, 5.000%, 3/01/41	9/26 at 100.00	AAA	2,423,800
645	Long Beach Bond Finance Authority, California, Natural Gas Purchase Revenue Bonds, Series 2007A, 5.500%, 11/15/37	No Opt. Call	A+	971,596
3,000	Los Angeles Department of Water and Power, California, Power System Revenue Bonds, Series 2017C, 5.000%, 7/01/47	7/27 at 100.00	Aa2	3,709,770
2,000	Los Angeles Department of Water and Power, California, Power System Revenue Bonds, Series 2018A, 5.000%, 7/01/38	1/28 at 100.00	Aa2	2,536,940
1,970	Los Angeles Department of Water and Power, California, Waterworks Revenue Bonds, Series 2014A, 5.000%, 7/01/44	7/24 at 100.00	AA+	2,263,294

NXC	Nuveen California Select Tax-Free Income Portfolio (continued)
	Portfolio of Investments December 31, 2020
	(Unaudited)

Principal Amount (000)	Description (1)	Optional Call Provisions (2)	Ratings (3)	Value
	Utilities (continued)
$1,000	Los Angeles Department of Water and Power, California, Waterworks Revenue Bonds, Series 2018B, 5.000%, 7/01/38	7/28 at 100.00	AA+	$1,291,130
620	Los Angeles, California, Wastewater System Revenue Bonds, Green Subordinate Lien Series 2017A, 5.250%, 6/01/47	6/27 at 100.00	AA	771,001
	Puerto Rico Aqueduct and Sewerage Authority, Revenue Bonds, Senior Lien Series 2012A:
50	5.500%, 7/01/28	7/22 at 100.00	CCC	53,063
175	5.750%, 7/01/37	7/22 at 100.00	CCC	186,156
145	6.000%, 7/01/47	7/22 at 100.00	CCC	154,606
17,350	Total Utilities			20,954,946
$93,931	Total Long-Term Investments (cost $86,378,181)			99,782,058
	Other Assets Less Liabilities – 1.9%			1,945,550
	Net Assets Applicable to Common Shares – 100%			$101,727,608

Part F of Form N-PORT was prepared in accordance with U.S. generally accepted accounting principles (“U.S. GAAP”) and in conformity with the applicable rules and regulations of the U.S. Securities and Exchange Commission (“SEC”) related to interim filings. Part F of Form N-PORT does not include all information and footnotes required by U.S. GAAP for complete financial statements. Certain footnote disclosures normally included in financial statements prepared in accordance with U.S. GAAP have been condensed or omitted from this report pursuant to the rules of the SEC. For a full set of the Fund’s notes to financial statements, please refer to the Fund’s most recently filed annual or semi-annual report.

Fair Value Measurements

The Fund's investments in securities are recorded at their estimated fair value utilizing valuation methods approved by the Board of Directors/Trustees. Fair value is defined as the price that would be received upon selling an investment or transferring a liability in an orderly transaction to an independent buyer in the principal or most advantageous market for the investment. U.S. GAAP establishes the three-tier hierarchy which is used to maximize the use of observable market data and minimize the use of unobservable inputs and to establish classification of fair value measurements for disclosure purposes. Observable inputs reflect the assumptions market participants would use in pricing the asset or liability. Observable inputs are based on market data obtained from sources independent of the reporting entity. Unobservable inputs reflect management’s assumptions about the assumptions market participants would use in pricing the asset or liability. Unobservable inputs are based on the best information available in the circumstances. The following is a summary of the three-tiered hierarchy of valuation input levels.

Level 1 – Inputs are unadjusted and prices are determined using quoted prices in active markets for identical securities.

Level 2 – Prices are determined using other significant observable inputs (including quoted prices for similar securities, interest rates, credit spreads, etc.).

Level 3 – Prices are determined using significant unobservable inputs (including management’s assumptions in determining the fair value of investments).

The following table summarizes the market value of the Fund's investments as of the end of the reporting period, based on the inputs used to value them:

	Level 1	Level 2	Level 3	Total
Long-Term Investments:
Municipal Bonds	$ —	$99,782,058	$ —	$99,782,058

(1)	All percentages shown in the Portfolio of Investments are based on net assets applicable to common shares unless otherwise noted.
(2)	Optional Call Provisions: Dates (month and year) and prices of the earliest optional call or redemption. There may be other call provisions at varying prices at later dates. Certain mortgage-backed securities may be subject to periodic principal paydowns.
(3)	For financial reporting purposes, the ratings disclosed are the highest of Standard & Poor’s Group (“Standard & Poor’s”), Moody’s Investors Service, Inc. (“Moody’s”) or Fitch, Inc. (“Fitch”) rating. This treatment of split-rated securities may differ from that used for other purposes, such as for Fund investment policies. Ratings below BBB by Standard & Poor’s, Baa by Moody’s or BBB by Fitch are considered to be below investment grade. Holdings designated N/R are not rated by any of these national rating agencies.
(4)	Step-up coupon bond, a bond with a coupon that increases ("steps up"), usually at regular intervals, while the bond is outstanding. The rate shown is the coupon as of the end of the reporting period.
(5)	Backed by an escrow or trust containing sufficient U.S. Government or U.S. Government agency securities, which ensure the timely payment of principal and interest.
144A	Investment is exempt from registration under Rule 144A of the Securities Act of 1933, as amended. These investments may only be resold in transactions exempt from registration, which are normally those transactions with qualified institutional buyers.
AMT	Alternative Minimum Tax