NUVEEN NEW YORK SELECT TAX -FREE INCOME PORTFOLIO

Regulatory Filings • Mar 1, 2019

N-Q 1 d682490dnq.htm NUVEEN NEW YORK SELECT TAX-FREE INCOME PORTFOLIO Nuveen New York Select Tax-Free Income Portfolio

UNITED STATES SECURITIES AND EXCHANGE COMMISSION

Washington, DC 20549

FORM N-Q

QUARTERLY SCHEDULE OF PORTFOLIO HOLDINGS OF REGISTERED MANAGEMENT INVESTMENT COMPANY

Investment Company Act file number 811-06624

Nuveen New York Select Tax-Free Income Portfolio

(Exact name of registrant as specified in charter)

Nuveen Investments

333 West Wacker Drive, Chicago, Illinois 60606

(Address of principal executive offices) (Zip code)

Gifford R. Zimmerman

Vice President and Secretary

333 West Wacker Drive, Chicago, Illinois 60606

(Name and address of agent for service)

Registrant’s telephone number, including area code: 312-917-7700

Date of fiscal year end: March 31

Date of reporting period: December 31, 2018

Form N-Q is to be used by management investment companies, other than small business investment companies registered on Form N-5 (§§ 239.24 and 274.5 of this chapter), to file reports with the Commission, not later than 60 days after the close of the first and third fiscal quarters, pursuant to rule 30b1-5 under the Investment Company Act of 1940 (17 CFR 270.30b1-5). The Commission may use the information provided on Form N-Q in its regulatory, disclosure review, inspection, and policymaking roles.

A registrant is required to disclose the information specified by Form N-Q, and the Commission will make this information public. A registrant is not required to respond to the collection of information contained in Form N-Q unless the Form displays a currently valid Office of Management and Budget (“OMB”) control number. Please direct comments concerning the accuracy of the information collection burden estimate and any suggestions for reducing the burden to the Secretary, Securities and Exchange Commission, 450 Fifth Street, NW, Washington, DC 20549-0609. The OMB has reviewed this collection of information under the clearance requirements of 44 U.S.C. § 3507.

Item 1. Schedule of Investments

NXN

Nuveen New York Select Tax-Free Income Portfolio

Portfolio of Investments December 31, 2018

(Unaudited)

| Principal
Amount (000) | Description
(1) | Optional
Call Provisions (2) | Ratings
(3) | Value |
| --- | --- | --- | --- | --- |
| | LONG-TERM
INVESTMENTS – 98.3% | | | |
| | MUNICIPAL
BONDS – 98.3% | | | |
| | Consumer
Staples  – 5.5% | | | |
| $ 435 | Erie
County Tobacco Asset Securitization Corporation, New York, Tobacco Settlement Asset-Backed Bonds, Series 2005A, 5.000%, 6/01/38 | 3/19
at 100.00 | BB+ | $ 432,142 |
| 150 | Nassau
County Tobacco Settlement Corporation, New York, Tobacco Settlement Asset-Backed Bonds, Refunding Series 2006A-2, 5.250%, 6/01/26 | 3/19
at 100.00 | B- | 150,008 |
| 275 | Nassau
County Tobacco Settlement Corporation, New York, Tobacco Settlement Asset-Backed Bonds, Series 2006A-3, 5.000%, 6/01/35 | 3/19
at 100.00 | B- | 264,327 |
| | New
York Counties Tobacco Trust VI, New York, Tobacco Settlement Pass-Through Bonds, Series 2016A-1: | | | |
| 445 | 5.625%,
6/01/35 | No
Opt. Call | BBB | 471,722 |
| 1,530 | 5.750%,
6/01/43 | No
Opt. Call | BBB | 1,686,993 |
| 2,835 | Total
Consumer Staples | | | 3,005,192 |
| | Education
and Civic Organizations – 19.8% | | | |
| 165 | Albany
Industrial Development Agency, New York, Revenue Bonds, Brighter Choice Charter Schools, Series 2007A, 5.000%, 4/01/37 | 3/19
at 100.00 | B | 153,227 |
| 280 | Buffalo
and Erie County Industrial Land Development Corporation, New York, Revenue Bonds, Enterprise Charter School Project, Series 2011A, 7.500%, 12/01/40 | 12/20
at 100.00 | B+ | 288,627 |
| | 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+ | 76,588 |
| 110 | 5.000%,
4/15/43 | 4/23
at 100.00 | BB+ | 111,387 |
| 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- | 162,264 |
| 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 | 1,181,670 |
| | 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 | 22,736 |
| 25 | 5.000%,
7/01/33 | 7/25
at 100.00 | Aa3 | 28,245 |
| 405 | Dormitory
Authority of the State of New York, Revenue Bonds, Barnard College, Series 2007A, 5.000%, 7/01/37  –  NPFG Insured | 3/19
at 100.00 | Baa2 | 406,089 |
| 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 | 1,058,020 |
| 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- | 667,654 |
| 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 | 328,750 |

1

NXN
Portfolio of
Investments December 31, 2018
(Unaudited)

| Principal
Amount (000) | Description
(1) | Optional
Call Provisions (2) | Ratings
(3) | Value |
| --- | --- | --- | --- | --- |
| | Education
and Civic Organizations (continued) | | | |
| $ 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 | $ 1,343,008 |
| 1,800 | Dormitory
Authority of the State of New York, Revenue Bonds, Non State Supported Debt, Cornell University, Series 2010A, 5.000%, 7/01/40 | 7/20
at 100.00 | Aa1 | 1,873,152 |
| 120 | Dormitory
Authority of the State of New York, Revenue Bonds, Saint Joseph's College, Series 2010, 5.250%, 7/01/35 | 7/20
at 100.00 | Ba1 | 122,000 |
| 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- | 261,562 |
| 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 | 172,049 |
| 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- | 120,200 |
| | New
York City Industrial Development Agency, New York, PILOT Revenue Bonds, Queens Baseball Stadium Project, Series 2006: | | | |
| 500 | 5.000%,
1/01/31  –  AMBAC Insured | 3/19
at 100.00 | BBB | 501,355 |
| 430 | 4.750%,
1/01/42  –  AMBAC Insured | 3/19
at 100.00 | BBB | 430,280 |
| 300 | New
York City Industrial Development Authority, New York, PILOT Revenue Bonds, Yankee Stadium Project, Series 2006, 4.750%, 3/01/46  –  NPFG Insured | 3/19
at 100.00 | Baa1 | 300,198 |
| 1,005 | New
York City Trust for Cultural Resources, New York, Revenue Bonds, Wildlife Conservation Society, Series 2014A, 5.000%, 8/01/32 | 8/23
at 100.00 | AA- | 1,116,244 |
| 10,040 | Total
Education and Civic Organizations | | | 10,725,305 |
| | Financials – 1.0% | | | |
| 450 | Liberty
Development Corporation, New York, Goldman Sachs Headquarter Revenue Bonds, Series 2005, 5.250%, 10/01/35 | No
Opt. Call | A | 546,557 |
| | Health
Care – 1.0% | | | |
| 100 | Dormitory
Authority of the State of New York, Highland Hospital of Rochester Revenue Bonds, Series 2010, 5.200%, 7/01/32 | 7/20
at 100.00 | A | 103,951 |
| 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- | 202,196 |
| 220 | Yonkers
Industrial Development Agency, New York, Revenue Bonds, St. John's Riverside Hospital, Series 2001B, 7.125%, 7/01/31 | 3/19
at 100.00 | B- | 220,084 |
| 520 | Total
Health Care | | | 526,231 |
| | Industrials – 3.9% | | | |
| 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 (Alternative Minimum Tax), 144A | 1/25
at 100.00 | N/R | 169,064 |
| 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 | 1,916,381 |
| 2,025 | Total
Industrials | | | 2,085,445 |
| | 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 | 3/19
at 100.00 | A3 | 100,123 |

2

| Principal
Amount (000) | Description
(1) | Optional
Call Provisions (2) | Ratings
(3) | Value |
| --- | --- | --- | --- | --- |
| | Tax
Obligation/General – 2.2% | | | |
| $ 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 | $ 1,214,892 |
| | Tax
Obligation/Limited – 19.1% | | | |
| 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+ | 1,128,204 |
| 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+ | 1,131,550 |
| 1,000 | Government
of Guam, Business Privilege Tax Bonds, Refunding Series 2015D, 5.000%, 11/15/25 | No
Opt. Call | BB | 1,102,360 |
| 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 | 908,312 |
| 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- | 814,826 |
| 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 | 1,110,960 |
| 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 | 1,088,620 |
| 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 | 498,119 |
| 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 | 533,220 |
| 535 | New
York City Transitional Finance Authority, New York, Future Tax Secured Revenue Bonds, Tender Option Bond Trust 2015-XF0080, 10.211%, 5/01/38, 144A (IF) | 5/19
at 100.00 | AAA | 549,782 |
| 570 | New
York State Thruway Authority, Highway and Bridge Trust Fund Bonds, Series 2005B, 5.500%, 4/01/20  –  AMBAC Insured (UB) (5) | No
Opt. Call | AA | 596,328 |
| 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 | 907,496 |
| 9,510 | Total
Tax Obligation/Limited | | | 10,369,777 |
| | Transportation – 18.5% | | | |
| 1,000 | Metropolitan
Transportation Authority, New York, Transportation Revenue Bonds, Series 2014B, 5.250%, 11/15/38 | 5/24
at 100.00 | AA- | 1,111,250 |
| 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+ | 265,965 |
| | New
York Transportation Development Corporation, New York, Special Facility Revenue Bonds, American Airlines, Inc. John F Kennedy International Airport Project, Refunding Series 2016: | | | |
| 345 | 5.000%,
8/01/26 (Alternative Minimum Tax) | 8/21
at 100.00 | BB | 360,153 |
| 685 | 5.000%,
8/01/31 (Alternative Minimum Tax) | 8/21
at 100.00 | BB | 709,585 |
| 700 | New
York Transportation Development Corporation, New York, Special Facility Revenue Bonds, Delta Air Lines, Inc. - LaGuardia Airport Terminals C&D Redevelopment Project, Series 2018, 5.000%, 1/01/32 (Alternative Minimum Tax) | 1/28
at 100.00 | Baa3 | 780,997 |
| 980 | New
York Transportation Development Corporation, Special Facilities Bonds, LaGuardia Airport Terminal B Redevelopment Project, Series 2016A, 5.000%, 7/01/46 (Alternative Minimum Tax) | 7/24
at 100.00 | BBB | 1,031,362 |

3

NXN
Portfolio of
Investments December 31, 2018
(Unaudited)

| Principal
Amount (000) | Description
(1) | Optional
Call Provisions (2) | Ratings
(3) | Value |
| --- | --- | --- | --- | --- |
| | Transportation (continued) | | | |
| $ 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 | AA- | $ 1,129,920 |
| 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 | AA- | 1,717,425 |
| | Port
Authority of New York and New Jersey, Special Project Bonds, JFK International Air Terminal LLC Project, Eigth Series 2010: | | | |
| 290 | 6.500%,
12/01/28 | 3/19
at 100.00 | Baa1 | 304,227 |
| 215 | 6.000%,
12/01/36 | 12/20
at 100.00 | Baa1 | 229,409 |
| 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- | 1,153,380 |
| 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- | 1,236,058 |
| 9,060 | Total
Transportation | | | 10,029,731 |
| | U.S.
Guaranteed – 9.9% (6) | | | |
| 750 | Dormitory
Authority of the State of New York, Revenue Bonds, NYU Hospitals Center, Series 2011A, 6.000%, 7/01/40 (Pre-refunded 7/01/20) | 7/20
at 100.00 | A- | 796,815 |
| 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 | 1,342,870 |
| 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- | 429,420 |
| 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- | 2,159,500 |
| 600 | Yonkers,
New York, General Obligation Bonds, Refunding Series 2011A, 5.000%, 10/01/24 (Pre-refunded 10/01/21)  –  AGM Insured | 10/21
at 100.00 | AA | 652,350 |
| 4,990 | Total
U.S. Guaranteed | | | 5,380,955 |
| | Utilities – 8.3% | | | |
| 550 | Chautauqua
County Industrial Development Agency, New York, Exempt Facility Revenue Bonds, NRG Dunkirk Power Project, Series 2009, 5.875%, 4/01/42 | 2/20
at 100.00 | BBB- | 562,391 |
| 35 | Guam
Power Authority, Revenue Bonds, Series 2012A, 5.000%, 10/01/34 | 10/22
at 100.00 | BBB | 36,675 |
| 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- | 54,516 |
| 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- | 201,013 |
| 150 | Niagara
Area Development Corporation, New York, Solid Waste Disposal Facility Revenue Refunding Bonds, Covanta Energy Project, Series 2018A, 4.750%, 11/01/42 (Alternative Minimum Tax), 144A | 7/23
at 100.00 | B | 145,412 |
| 1,365 | Utility
Debt Securitization Authority, New York, Restructuring Bonds, Series 2013TE, 5.000%, 12/15/41 | 12/23
at 100.00 | AAA | 1,497,596 |
| 1,750 | Utility
Debt Securitization Authority, New York, Restructuring Bonds, Series 2016B, 5.000%, 12/15/35 | 6/26
at 100.00 | AAA | 2,009,770 |
| 4,080 | Total
Utilities | | | 4,507,373 |

4

| Principal
Amount (000) | Description
(1) | Optional
Call Provisions (2) | Ratings
(3) | Value |
| --- | --- | --- | --- | --- |
| | Water
and Sewer – 8.9% | | | |
| $ 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 | $ 228,386 |
| 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+ | 3,424,830 |
| 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, Subordinated SRF Series 2017A, 5.000%, 6/15/42 | 6/27
at 100.00 | AAA | 1,143,470 |
| 4,200 | Total
Water and Sewer | | | 4,796,686 |
| $ 48,890 | Total
Long-Term Investments (cost $51,580,798) | | | 53,288,267 |
| | Floating
Rate Obligations – (0.8)% | | | (425,000) |
| | Other
Assets Less Liabilities – 2.5% | | | 1,326,672 |
| | Net
Assets – 100% | | | $ 54,189,939 |

Fair Value Measurements

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. A three-tier hierarchy 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 the reporting entity’s own 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 inputs or methodologies used for valuing securities are not an indication of the risks associated with investing in those securities. The following is a summary of the Fund’s fair value measurements as of the end of the reporting period:

| | Level
1 | Level
2 | Level
3 | Total |
| --- | --- | --- | --- | --- |
| Long-Term
Investments: | | | | |
| Municipal
Bonds | $ — | $53,288,267 | $ — | $53,288,267 |

5

NXN
Portfolio of
Investments December 31, 2018
(Unaudited)

Income Tax Information

The following information is presented on an income tax basis. Differences between amounts for financial statement and federal income tax purposes are primarily due to timing differences in recognizing taxable market discount, timing differences in recognizing certain gains and losses on investment transactions and the treatment of investments in inverse floating rate securities reflected as financing transactions, if any. To the extent that differences arise that are permanent in nature, such amounts are reclassified within the capital accounts on the Statement of Assets and Liabilities presented in the annual report, based on their federal tax basis treatment; temporary differences do not require reclassification. Temporary and permanent differences do not impact the net asset value of the Fund.

The table below presents the cost and unrealized appreciation (depreciation) of the Fund's investment portfolio, as determined on a federal income tax basis, as of December 31, 2018.

| Tax
cost of investments | $51,170,465 |
| --- | --- |
| Gross
unrealized: | |
| Appreciation | $ 1,766,970 |
| Depreciation | (73,707) |
| Net
unrealized appreciation (depreciation) of investments | $ 1,693,263 |

| (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) | Investment,
or portion of investment, has been pledged to collateralize the net payment obligations for investments in inverse floating rate transactions. |
| (6) | 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. |
| IF | Inverse
floating rate security issued by a tender option bond (“TOB”) trust, the interest rate on which varies inversely with the Securities Industry Financial Markets Association (SIFMA) short-term rate, which resets weekly, or a similar
short-term rate, and is reduced by the expenses related to the TOB trust. |
| UB | Underlying
bond of an inverse floating rate trust reflected as a financing transaction. |

6

Item 2. Controls and Procedures.

a. The registrant’s principal executive and principal financial officers, or persons performing similar functions, have concluded that the registrant’s disclosure controls and procedures (as defined in Rule 30a-3(c) under the Investment Company Act of 1940, as amended (the “1940 Act”) (17 CFR 270.30a-3(c))) are effective, as of a date within 90 days of the filing date of this report that includes the disclosure required by this paragraph, based on their evaluation of the controls and procedures required by Rule 30a-3(b) under the 1940 Act (17 CFR 270.30a-3(b)) and Rule 13a-15(b) or 15d-15(b) under the Securities Exchange Act of 1934 (17 CFR 240.13a-15(b) or 240.15d-15(b)).

b. There were no changes in the registrant’s internal control over financial reporting (as defined in Rule 30a-3(d) under the 1940 Act (17 CFR 270.30a-3(d)) that occurred during the registrant’s last fiscal quarter that have materially affected, or are reasonably likely to materially affect, the registrant’s internal control over financial reporting.

Item 3. Exhibits.

File as exhibits as part of this Form a separate certification for each principal executive officer and principal financial officer of the registrant as required by Rule 30a-2(a) under the 1940 Act (17 CFR 270.30a-2(a)), exactly as set forth below: See EX-99 CERT attached hereto.

SIGNATURES

Pursuant to the requirements of the Securities Exchange Act of 1934 and the Investment Company Act of 1940, the registrant has duly caused this report to be signed on its behalf by the undersigned, thereunto duly authorized.

(Registrant)	Nuveen New York Select Tax-Free Income Portfolio
By (Signature and Title)	/s/ Gifford R.
Zimmerman
	Gifford R. Zimmerman
	Vice President and Secretary

Date: March 1, 2019

Pursuant to the requirements of the Securities Exchange Act of 1934 and the Investment Company Act of 1940, this report has been signed below by the following persons on behalf of the registrant and in the capacities and on the dates indicated.

| By (Signature and Title) | /s/ Cedric H.
Antosiewicz |
| --- | --- |
| | Cedric H. Antosiewicz |
| | Chief Administrative Officer (principal executive officer) |
| Date: March 1, 2019 | |
| By (Signature and Title) | /s/ Stephen D.
Foy |
| | Stephen D. Foy |
| | Vice President and Controller (principal financial officer) |
| Date: March 1, 2019 | |