_NXN

Nuveen New York 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 – 97.5%
	MUNICIPAL BONDS – 97.5%
	Consumer Staples  – 4.9%
$435	Erie County Tobacco Asset Securitization Corporation, New York, Tobacco Settlement Asset-Backed Bonds, Series 2005A, 5.000%, 6/01/38	2/21 at 100.00	B-	$435,387
	New York Counties Tobacco Trust VI, New York, Tobacco Settlement Pass-Through Bonds, Series Series 2016A-1:
390	5.625%, 6/01/35	No Opt. Call	BBB	422,682
1,530	5.750%, 6/01/43	No Opt. Call	BB+	1,908,017
2,355	Total Consumer Staples			2,766,086
	Education and Civic Organizations – 14.5%
165	Albany Industrial Development Agency, New York, Revenue Bonds, Brighter Choice Charter Schools, Series 2007A, 5.000%, 4/01/37	2/21 at 100.00	BB	165,195
275	Buffalo and Erie County Industrial Land Development Corporation, New York, Revenue Bonds, Enterprise Charter School Project, Series 2011A, 7.500%, 12/01/40	2/21 at 100.00	B+	275,597
	Build New York City Resource Corporation, New York, Revenue Bonds, South Bronx Charter School for International Cultures and the Arts Project, Series 2013A:
75	5.000%, 4/15/33	4/23 at 100.00	BB+	78,124
110	5.000%, 4/15/43	4/23 at 100.00	BB+	113,600
100	Build NYC Resource Corporation, New York, Revenue Bonds, Family Life Academy Charter School, Series 2020C-1, 5.000%, 6/01/40, 144A	12/30 at 100.00	N/R	104,445
150	Dormitory Authority of the State of New York, General Revenue Bonds, Saint Johns University, Series 2013A, 5.000%, 7/01/44	7/23 at 100.00	A-	161,103
1,000	Dormitory Authority of the State of New York, Housing Revenue Bonds, Fashion Institute of Technology, Series 2007, 5.250%, 7/01/34  –  FGIC Insured	No Opt. Call	Baa2	1,216,430
	Dormitory Authority of the State of New York, Lease Revenue Bonds, State University Dormitory Facilities, Series 2015A:
20	5.000%, 7/01/31	7/25 at 100.00	Aa3	23,622
25	5.000%, 7/01/33	7/25 at 100.00	Aa3	29,355
1,000	Dormitory Authority of the State of New York, Revenue Bonds, Columbia University, Series 2011A, 5.000%, 10/01/41	4/21 at 100.00	AAA	1,010,620
605	Dormitory Authority of the State of New York, Revenue Bonds, Icahn School of Medicine at Mount Sinai, Refunding Series 2015A, 5.000%, 7/01/40	7/25 at 100.00	A-	691,388
290	Dormitory Authority of the State of New York, Revenue Bonds, New York University, Series 2015A, 5.000%, 7/01/35	7/25 at 100.00	Aa2	340,115
1,185	Dormitory Authority of the State of New York, Revenue Bonds, New York University, Series 2016A, 5.000%, 7/01/39	7/26 at 100.00	Aa2	1,415,601
70	Dormitory Authority of the State of New York, Revenue Bonds, Rochester Institute of Technology, Series 2019A, 5.000%, 7/01/49	7/29 at 100.00	A1	87,587

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NXN	Nuveen New York 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
	Education and Civic Organizations (continued)
$250	Dormitory Authority of the State of New York, Revenue Bonds, Vaughn College of Aeronautics & Technology, Series 2016A, 5.500%, 12/01/36, 144A	12/26 at 100.00	BB-	$256,568
215	Glen Cove Local Economic Assistance Corporation, New York, Revenue Bonds, Garvies Point Public Improvement Project, Capital Appreciation Series 2016C, 0.000%, 1/01/55 (4)	1/34 at 100.00	N/R	214,824
110	Hempstead Town Local Development Corporation, New York, Revenue Bonds, Adelphi University Project, Series 2013, 5.000%, 9/01/38	9/23 at 100.00	A-	117,847
	New York City Industrial Development Agency, New York, PILOT Payment in Lieu of Taxes Revenue Bonds, Queens Baseball Stadium Project, Series 2006:
500	5.000%, 1/01/31  –  AMBAC Insured	2/21 at 100.00	Baa3	500,215
430	4.750%, 1/01/42  –  AMBAC Insured	2/21 at 100.00	Baa3	430,176
130	New York City Industrial Development Agency, New York, PILOT Payment in Lieu of Taxes Revenue Bonds, Yankee Stadium Project, Series 2020A, 4.000%, 3/01/45	9/30 at 100.00	AA	149,939
350	New York City Trust for Cultural Resources, New York, Revenue Bonds, Whitney Museum of American Art, Refunding Series 2021, 5.000%, 7/01/31 (WI/DD, Settling 1/07/21)	No Opt. Call	AA	484,106
190	New York Liberty Development Corporation, New York, Liberty Revenue Bonds, Bank of America Tower at One Bryant Park Project, Second Priority Refunding Series 2019 Class 2, 2.625%, 9/15/69	3/29 at 100.00	A2	197,049
145	New York Liberty Development Corporation, New York, Liberty Revenue Bonds, Bank of America Tower at One Bryant Park Project, Second Priority Refunding Series 2019 Class 3, 2.800%, 9/15/69	3/29 at 100.00	Baa2	141,653
7,390	Total Education and Civic Organizations			8,205,159
	Financials – 1.1%
450	Liberty Development Corporation, New York, Goldman Sachs Headquarter Revenue Bonds, Series 2005, 5.250%, 10/01/35	No Opt. Call	A	654,579
	Health Care – 2.5%
1,100	Dormitory Authority of the State of New York, Revenue Bonds, Montefiore Obligated Group, Series 2020A, 4.000%, 9/01/50	3/30 at 100.00	BBB	1,196,811
200	Dutchess County Local Development Corporation, New York, Revenue Bonds, Health Quest Systems, Inc Project, Series 2016B, 4.000%, 7/01/41	7/26 at 100.00	A-	218,130
1,300	Total Health Care			1,414,941
	Industrials – 3.5%
1,865	New York Liberty Development Corporation, New York, Liberty Revenue Bonds, 3 World Trade Center Project, Class 1 Series 2014, 5.000%, 11/15/44, 144A	11/24 at 100.00	N/R	2,010,563
	Long-Term Care – 0.2%
100	Dormitory Authority of the State of New York, Non-State Supported Debt, Ozanam Hall of Queens Nursing Home Revenue Bonds, Series 2006, 5.000%, 11/01/31	2/21 at 100.00	A2	100,246
25	Monroe County Industrial Development Corporation, New York, Revenue Bonds, Saint Ann's Community Project, Series 2019, 5.000%, 1/01/40	1/26 at 103.00	N/R	27,480
125	Total Long-Term Care			127,726

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Principal Amount (000)	Description (1)	Optional Call Provisions (2)	Ratings (3)	Value
	Materials – 0.3%
$160	Build New York City Resource Corporation, New York, Solid Waste Disposal Revenue Bonds, Pratt Paper NY, Inc Project, Series 2014, 5.000%, 1/01/35 (AMT), 144A	1/25 at 100.00	N/R	$177,795
	Tax Obligation/General – 7.4%
1,000	Nassau County, New York, General Obligation Bonds, General Improvement Bonds Series 2019B, 5.000%, 4/01/49  –  AGM Insured	4/30 at 100.00	AA	1,272,100
1,080	New York City, New York, General Obligation Bonds, Fiscal 2017 Series B-1, 5.000%, 12/01/41	12/26 at 100.00	AA	1,301,659
835	New York City, New York, General Obligation Bonds, Fiscal 2020 SeriesD-1, 4.000%, 3/01/44	3/30 at 100.00	AA	981,317
600	Yonkers, New York, General Obligation Bonds, Refunding Series 2011A, 5.000%, 10/01/24  –  AGM Insured	10/21 at 100.00	AA	621,756
3,515	Total Tax Obligation/General			4,176,832
	Tax Obligation/Limited – 19.2%
1,050	Dormitory Authority of the State of New York, State Personal Income Tax Revenue Bonds, General Purpose Series 2012D, 5.000%, 2/15/37	2/22 at 100.00	AA+	1,100,914
1,000	Dormitory Authority of the State of New York, State Personal Income Tax Revenue Bonds, General Purpose, Series 2019A Bidding Group 2,3,4, 5.000%, 3/15/46	3/29 at 100.00	AA+	1,246,430
1,000	Dormitory Authority of the State of New York, State Sales Tax Revenue Bonds, Series 2015B Group A,B&C, 5.000%, 3/15/35	9/25 at 100.00	AA+	1,189,930
1,000	Government of Guam, Business Privilege Tax Bonds, Refunding Series 2015D, 5.000%, 11/15/25	No Opt. Call	BB	1,164,720
800	Hudson Yards Infrastructure Corporation, New York, Revenue Bonds, Second Indenture Fiscal 2017 Series A, 5.000%, 2/15/38	2/27 at 100.00	Aa3	968,208
760	Hudson Yards Infrastructure Corporation, New York, Revenue Bonds, Senior Fiscal 2012 Series 2011A, 5.750%, 2/15/47	2/21 at 100.00	AA-	764,499
1,000	New York City Transitional Finance Authority, New York, Building Aid Revenue Bonds, Fiscal Series 2015S-2, 5.000%, 7/15/40	7/25 at 100.00	AA	1,184,450
1,000	New York City Transitional Finance Authority, New York, Future Tax Secured Bonds, Subordinate Fiscal 2013 Series I, 5.000%, 5/01/38	5/23 at 100.00	AAA	1,097,770
450	New York City Transitional Finance Authority, New York, Future Tax Secured Bonds, Subordinate Fiscal 2014 Series D-1, 5.000%, 2/01/35	2/24 at 100.00	AAA	509,724
500	New York City Transitional Finance Authority, New York, Future Tax Secured Revenue Bonds, Subordinate Series 2011-D1, 5.250%, 2/01/30	2/21 at 100.00	AAA	501,765
235	Puerto Rico Sales Tax Financing Corporation, Sales Tax Revenue Bonds, Restructured 2018A-1, 5.000%, 7/01/58	7/28 at 100.00	N/R	262,472
845	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	902,308
9,640	Total Tax Obligation/Limited			10,893,190
	Transportation – 18.4%
900	Metropolitan Transportation Authority, New York, Transportation Revenue Bonds, Series 2014D-1, 5.000%, 11/15/39	11/24 at 100.00	A3	985,374
250	New York Liberty Development Corporation, New York, Liberty Revenue Bonds, 4 World Trade Center Project, Series 2011, 5.000%, 11/15/44	11/21 at 100.00	A	258,793

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NXN	Nuveen New York 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
	Transportation (continued)
$980	New York Transportation Development Corporation, New York, Special Facilities Bonds, LaGuardia Airport Terminal B Redevelopment Project, Series 2016A, 5.000%, 7/01/46 (AMT)	7/24 at 100.00	BBB	$1,072,620
	New York Transportation Development Corporation, New York, Special Facility Revenue Bonds, American Airlines, Inc John F Kennedy International Airport Project, Refunding Series 2016:
200	5.000%, 8/01/26 (AMT)	8/21 at 100.00	B+	203,290
830	5.000%, 8/01/31 (AMT)	8/21 at 100.00	B+	842,193
30	New York Transportation Development Corporation, New York, Special Facility Revenue Bonds, American Airlines, Inc John F Kennedy International Airport Project, Series 2020, 5.375%, 8/01/36 (AMT)	8/30 at 100.00	B+	34,122
85	New York Transportation Development Corporation, New York, Special Facility Revenue Bonds, American Airlines, Inc John F Kennedy International Airport Project, Series 2020A, 5.000%, 12/01/37 (AMT)	12/30 at 100.00	Baa1	106,849
100	New York Transportation Development Corporation, New York, Special Facility Revenue Bonds, American Airlines, Inc John F Kennedy International Airport Project, Series 2020C, 5.000%, 12/01/37	12/30 at 100.00	Baa1	128,280
	New York Transportation Development Corporation, Special Facility Revenue Bonds, Delta Air Lines, Inc - LaGuardia Airport Terminals C&D Redevelopment Project, Series 2018:
700	5.000%, 1/01/28 (AMT)	No Opt. Call	Baa3	850,584
300	5.000%, 1/01/31 (AMT)	1/28 at 100.00	Baa3	358,863
1,000	Port Authority of New York and New Jersey, Consolidated Revenue Bonds, One Hundred Ninety-Fourth Series 2015, 5.250%, 10/15/55	10/25 at 100.00	Aa3	1,163,510
1,500	Port Authority of New York and New Jersey, Consolidated Revenue Bonds, Two Hundred Eleventh Series 2018, 5.000%, 9/01/48	9/28 at 100.00	Aa3	1,856,295
1,000	Triborough Bridge and Tunnel Authority, New York, General Purpose Revenue Bonds, MTA Bridges & Tunnels, Refunding Series 2017B, 5.000%, 11/15/36	5/27 at 100.00	AA-	1,235,390
1,095	Triborough Bridge and Tunnel Authority, New York, General Purpose Revenue Bonds, MTA Bridges & Tunnels, Series 2017A, 5.000%, 11/15/47	5/27 at 100.00	AA-	1,325,497
8,970	Total Transportation			10,421,660
	U.S. Guaranteed – 8.5% (5)
1,240	Hudson Yards Infrastructure Corporation, New York, Revenue Bonds, Senior Fiscal 2012 Series 2011A, 5.750%, 2/15/47 (Pre-refunded 2/15/21)	2/21 at 100.00	Aa3	1,247,762
400	Long Island Power Authority, New York, Electric System Revenue Bonds, Series 2011A, 5.000%, 5/01/38 (Pre-refunded 5/01/21)	5/21 at 100.00	A	406,364
2,000	Monroe County Industrial Development Corporation, New York, Revenue Bonds, University of Rochester Project, Series 2011B, 5.000%, 7/01/41 (Pre-refunded 7/01/21)	7/21 at 100.00	AA-	2,047,980
1,005	New York City Trust for Cultural Resources, New York, Revenue Bonds, Wildlife Conservation Society, Series 2014A, 5.000%, 8/01/32 (Pre-refunded 8/01/23)	8/23 at 100.00	A+	1,128,706
4,645	Total U.S. Guaranteed			4,830,812
	Utilities – 17.0%
200	Buffalo Municipal Water Finance Authority, New York, Water System Revenue Bonds, Refunding Series 2015A, 5.000%, 7/01/29	7/25 at 100.00	A+	237,754

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Principal Amount (000)	Description (1)	Optional Call Provisions (2)	Ratings (3)	Value
	Utilities (continued)
$35	Guam Power Authority, Revenue Bonds, Series 2012A, 5.000%, 10/01/34	10/22 at 100.00	BBB	$36,815
50	Long Island Power Authority, New York, Electric System General Revenue Bonds, Series 2014A, 5.000%, 9/01/44	9/24 at 100.00	A	56,820
180	Long Island Power Authority, New York, Electric System General Revenue Bonds, Series 2017, 5.000%, 9/01/47	9/27 at 100.00	A	220,370
3,000	New York City Municipal Water Finance Authority, New York, Water and Sewer System Second General Resolution Revenue Bonds, Fiscal 2018 Series EE, 5.000%, 6/15/40	12/27 at 100.00	AA+	3,809,490
1,000	New York State Environmental Facilities Corporation, State Clean Water and Drinking Water Revolving Funds Revenue Bonds, New York City Municipal Water Finance Authority Projects-Second Resolution Bonds,, 5.000%, 6/15/42	6/27 at 100.00	AAA	1,254,220
150	Niagara Area Development Corporation, New York, Solid Waste Disposal Facility Revenue Refunding Bonds, Covanta Energy Project, Series 2018A, 4.750%, 11/01/42 (AMT), 144A	7/23 at 100.00	B1	155,120
	Puerto Rico Aqueduct and Sewerage Authority, Revenue Bonds, Senior Lien Series 2012A:
25	5.500%, 7/01/28	7/22 at 100.00	CCC	26,531
100	5.750%, 7/01/37	7/22 at 100.00	CCC	106,375
80	6.000%, 7/01/47	7/22 at 100.00	CCC	85,300
1,365	Utility Debt Securitization Authority, New York, Restructuring Bonds, Series 2013TE, 5.000%, 12/15/41	12/23 at 100.00	AAA	1,532,799
1,750	Utility Debt Securitization Authority, New York, Restructuring Bonds, Series 2016B, 5.000%, 12/15/35	6/26 at 100.00	AAA	2,137,765
7,935	Total Utilities			9,659,359
$48,350	Total Long-Term Investments (cost $50,983,834)			55,338,702
	Other Assets Less Liabilities – 2.5%			1,415,239
	Net Assets Applicable to Common Shares – 100%			$56,753,941

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.

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NXN	Nuveen New York Select Tax-Free Income Portfolio (continued)
	Portfolio of Investments December 31, 2020
	(Unaudited)

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	$ —	$55,338,702	$ —	$55,338,702

(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
WI/DD	Purchased on a when-issued or delayed delivery basis.

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