Frequently Asked Questions About NBB

What are the top holdings of NBB?

A machine-readable holdings disclosure for Nuveen Taxable Municipal Income Fund (NBB) is not available from our data sources. Fund families sometimes register portfolio filings under a sibling share class or outside the SEC's structured datasets. Rather than estimate, we leave the section blank; the issuer's website carries the authoritative portfolio list.

What sectors does NBB invest in?

Nuveen Taxable Municipal Income Fund (NBB) allocates across the sectors shown above. The largest exposure tops the list; the rest follow in descending weight order.

What sector is NBB most exposed to?

NBB's full sector breakdown is on the Sectors tab. The largest sector weight is shown there along with the rest of the allocation.

Is NBB a US-only fund?

The country allocation card on this page shows NBB's geographic exposure. Funds with > 95% US weight are effectively US-only; international or global funds will show meaningful weights across multiple countries.

What does NBB invest in?

The Nuveen Taxable Municipal Income Fund, previously identified as the Nuveen Build America Bond Fund, operates as a closed-end mutual fund concentrated on fixed-income investments. This U.S.-domiciled fund, established by Nuveen Investments, Inc. on December 4, 2009, is jointly overseen by Nuveen Fund Advisors LLC and Nuveen Asset Management, LLC. It primarily allocates capital within the United States' fixed income markets, specifically targeting Build America Bonds, which are taxable municipal securities. A portion of its portfolio may also be directed toward derivative instruments. The fund employs a comprehensive fundamental analysis strategy, integrating both bottom-up and top-down security selection methodologies to construct its holdings. Its investment performance is measured against the Barclays Capital Build America Bond Index.

NBB

Nuveen Taxable Municipal Income Fund

NYSE·Asset Management, Income · Financial Services

$14.46$0.04+0.28%

Oct 30 12:35 PM EDT

Portfolio as of June 30, 2026, from the fund's SEC Form N-PORT filing. Funds disclose holdings quarterly, with a ~60-day publication delay. Weights are percent of the fund's net assets, and NBB uses leverage, so its long positions add up to more than 100%. Sector breakdowns aren't part of this filing, so none is shown.

Top Holdings

164

holdings

93976AAH5
Washington State Convention Center Public Facilities District, Lodging Tax Revenue Bonds, Build America Taxable Bond Series 2010B
5.91%
544495VY7
Los Angeles Department of Water and Power, California, Power System Revenue Bonds, Federally Taxable - Direct Payment - Build America Bonds, Series 20
5.32%
626207YS7
Georgia Municipal Electric Authority, Plant Vogtle Units 3 & 4 Project P Bonds, Refunding Taxable Build America Bonds Series 2010A
4.35%
235417AA0
Dallas Convention Center Hotel Development Corporation, Texas, Hotel Revenue Bonds, Build America Taxable Bonds, Series 09B
3.75%
592643AA8
Metropolitan Washington Airports Authority, Virginia, Dulles Toll Road Revenue Bonds, Dulles Metrorail & Capital improvement Projects, Second Senior L
3.56%
54473ENS9
Los Angeles County Public Works Financing Authority, California, Lease Revenue Bonds, Mulitple Capital Projects I, Build America Taxable Bond Series 2
2.81%
67884XCP0
Oklahoma Development Finance Authority, Health System Revenue Bonds, OU Medicine Project, Taxable Series 2018D
2.75%
16772PAQ9
Chicago Transit Authority, Illinois, Sales Tax Receipts Revenue Bonds, Federally Taxable Build America Bonds, Series 2010B
2.72%
16080TAH8
Charlotte County Industrial Development Authority, Florida, Utility System Revenue Bonds, Town & Country Utilities Project, Taxable Series 2021B
2.68%
59259YBY4
Metropolitan Transportation Authority, New York, Transportation Revenue Bonds, Federally Taxable Issuer Subsidy Build America Bonds, Series 2010A
2.59%
Other
150 more holdings
104.05%

Top 10 holdings

−32.25%

Top 25 holdings

1.77%

Concentration index

0.0136

Effective holdings

Chart tools

Open Top Holdings in Chart Builder to fine-tune colors, labels, and timeframe, then download a high-res PNG.

All Holdings (164)

#	TickerHolding	Name	Weight	Shares	Market Value
1	957AAW000957AAW000RBC Capital Markets	RBC Capital Markets	−25.91%	−123.00M	−$123.00M
2	R0001478888-1R0001478888-1US ULTRA BOND CBT Sep26	US ULTRA BOND CBT Sep26	−16.47%	−673.00	−$78.17M
3	R0001478888-2R0001478888-2Toronto Dominion Holdings USA Inc	Toronto Dominion Holdings USA Inc	−9.06%	−43.00M	−$43.00M
4	R0001478888-3R0001478888-3Wells Fargo & Co	Wells Fargo & Co	−6.52%	−30.95M	−$30.95M
5	93976AAH593976AAH5Washington State Convention Center Public Facilities District, Lodging Tax Revenue Bonds, Build America Taxable Bond Series 2010B	Washington State Convention Center Public Facilities District, Lodging Tax Revenue Bonds, Build America Taxable Bond Series 2010B	5.91%	26.24M	$28.07M
6	544495VY7544495VY7Los Angeles Department of Water and Power, California, Power System Revenue Bonds, Federally Taxable - Direct Payment - Build America Bonds, Series 20	Los Angeles Department of Water and Power, California, Power System Revenue Bonds, Federally Taxable - Direct Payment - Build America Bonds, Series 20	5.32%	23.79M	$25.27M
7	626207YS7626207YS7Georgia Municipal Electric Authority, Plant Vogtle Units 3 & 4 Project P Bonds, Refunding Taxable Build America Bonds Series 2010A	Georgia Municipal Electric Authority, Plant Vogtle Units 3 & 4 Project P Bonds, Refunding Taxable Build America Bonds Series 2010A	4.35%	18.72M	$20.66M
8	235417AA0235417AA0Dallas Convention Center Hotel Development Corporation, Texas, Hotel Revenue Bonds, Build America Taxable Bonds, Series 09B	Dallas Convention Center Hotel Development Corporation, Texas, Hotel Revenue Bonds, Build America Taxable Bonds, Series 09B	3.75%	16.12M	$17.79M
9	592643AA8592643AA8Metropolitan Washington Airports Authority, Virginia, Dulles Toll Road Revenue Bonds, Dulles Metrorail & Capital improvement Projects, Second Senior L	Metropolitan Washington Airports Authority, Virginia, Dulles Toll Road Revenue Bonds, Dulles Metrorail & Capital improvement Projects, Second Senior L	3.56%	14.37M	$16.91M
10	54473ENS954473ENS9Los Angeles County Public Works Financing Authority, California, Lease Revenue Bonds, Mulitple Capital Projects I, Build America Taxable Bond Series 2	Los Angeles County Public Works Financing Authority, California, Lease Revenue Bonds, Mulitple Capital Projects I, Build America Taxable Bond Series 2	2.81%	11.38M	$13.34M
11	67884XCP067884XCP0Oklahoma Development Finance Authority, Health System Revenue Bonds, OU Medicine Project, Taxable Series 2018D	Oklahoma Development Finance Authority, Health System Revenue Bonds, OU Medicine Project, Taxable Series 2018D	2.75%	13.20M	$13.07M
12	16772PAQ916772PAQ9Chicago Transit Authority, Illinois, Sales Tax Receipts Revenue Bonds, Federally Taxable Build America Bonds, Series 2010B	Chicago Transit Authority, Illinois, Sales Tax Receipts Revenue Bonds, Federally Taxable Build America Bonds, Series 2010B	2.72%	12.29M	$12.91M
13	16080TAH816080TAH8Charlotte County Industrial Development Authority, Florida, Utility System Revenue Bonds, Town & Country Utilities Project, Taxable Series 2021B	Charlotte County Industrial Development Authority, Florida, Utility System Revenue Bonds, Town & Country Utilities Project, Taxable Series 2021B	2.68%	13.75M	$12.70M
14	59259YBY459259YBY4Metropolitan Transportation Authority, New York, Transportation Revenue Bonds, Federally Taxable Issuer Subsidy Build America Bonds, Series 2010A	Metropolitan Transportation Authority, New York, Transportation Revenue Bonds, Federally Taxable Issuer Subsidy Build America Bonds, Series 2010A	2.59%	11.39M	$12.31M
15	66285WFB766285WFB7North Texas Tollway Authority, System Revenue Bonds, Taxble Build America Bond Series 2009B	North Texas Tollway Authority, System Revenue Bonds, Taxble Build America Bond Series 2009B	2.37%	10.29M	$11.27M
16	837151AA7837151AA7South Carolina Public Service Authority, Electric System Revenue Bonds, Santee Cooper, Federally Taxable Build America Series 2010C	South Carolina Public Service Authority, Electric System Revenue Bonds, Santee Cooper, Federally Taxable Build America Series 2010C	2.35%	10.54M	$11.18M
17	64972HRB064972HRB0New York City Transitional Finance Authority, New York, Building Aid Revenue Bonds, Fiscal 2011 Taxable Build America Bond Series 2010S-1B	New York City Transitional Finance Authority, New York, Building Aid Revenue Bonds, Fiscal 2011 Taxable Build America Bond Series 2010S-1B	2.31%	10.01M	$10.95M
18	452252FH7452252FH7Illinois Toll Highway Authority, Toll Highway Revenue Bonds, Taxable Build America Bond Senior Lien Series 2009A	Illinois Toll Highway Authority, Toll Highway Revenue Bonds, Taxable Build America Bond Senior Lien Series 2009A	2.29%	10.31M	$10.86M
19	54438CNZ154438CNZ1Los Angeles Community College District, California, General Obligation Bonds, Build America Taxable Bonds, Series 2010	Los Angeles Community College District, California, General Obligation Bonds, Build America Taxable Bonds, Series 2010	2.22%	10.00M	$10.54M
20	452152FA4452152FA4Illinois State, General Obligation Bonds, Taxable Build America Bonds, Series 2010-3	Illinois State, General Obligation Bonds, Taxable Build America Bonds, Series 2010-3	2.15%	9.72M	$10.20M

Showing 20 of 164

Sectors

The fund issuer's factsheet may carry this breakdown directly.

Countries

Domicile

United States · 117.51%

Asset Classes

Primary asset class

Fixed income

Strategy

Actively Managed

Income strategy

Bond yield

Issuer-reported asset class: Bond

Frequently Asked Questions About NBB

What are the top holdings of NBB?: A machine-readable holdings disclosure for Nuveen Taxable Municipal Income Fund (NBB) is not available from our data sources. Fund families sometimes register portfolio filings under a sibling share class or outside the SEC's structured datasets. Rather than estimate, we leave the section blank; the issuer's website carries the authoritative portfolio list.
What sectors does NBB invest in?: Nuveen Taxable Municipal Income Fund (NBB) allocates across the sectors shown above. The largest exposure tops the list; the rest follow in descending weight order.
What sector is NBB most exposed to?: NBB's full sector breakdown is on the Sectors tab. The largest sector weight is shown there along with the rest of the allocation.
Is NBB a US-only fund?: The country allocation card on this page shows NBB's geographic exposure. Funds with > 95% US weight are effectively US-only; international or global funds will show meaningful weights across multiple countries.
What does NBB invest in?: The Nuveen Taxable Municipal Income Fund, previously identified as the Nuveen Build America Bond Fund, operates as a closed-end mutual fund concentrated on fixed-income investments. This U.S.-domiciled fund, established by Nuveen Investments, Inc. on December 4, 2009, is jointly overseen by Nuveen Fund Advisors LLC and Nuveen Asset Management, LLC. It primarily allocates capital within the United States' fixed income markets, specifically targeting Build America Bonds, which are taxable municipal securities. A portion of its portfolio may also be directed toward derivative instruments. The fund employs a comprehensive fundamental analysis strategy, integrating both bottom-up and top-down security selection methodologies to construct its holdings. Its investment performance is measured against the Barclays Capital Build America Bond Index.

TickerHolding

Name

Weight

Market Value

957AAW000957AAW000RBC Capital Markets

RBC Capital Markets

−25.91%

−123.00M

−$123.00M

R0001478888-1R0001478888-1US ULTRA BOND CBT Sep26

US ULTRA BOND CBT Sep26

−16.47%

−673.00

−$78.17M

R0001478888-2R0001478888-2Toronto Dominion Holdings USA Inc

Toronto Dominion Holdings USA Inc

−9.06%

−43.00M

−$43.00M

R0001478888-3R0001478888-3Wells Fargo & Co

Wells Fargo & Co

−6.52%

−30.95M

−$30.95M

93976AAH593976AAH5Washington State Convention Center Public Facilities District, Lodging Tax Revenue Bonds, Build America Taxable Bond Series 2010B

Washington State Convention Center Public Facilities District, Lodging Tax Revenue Bonds, Build America Taxable Bond Series 2010B

5.91%

26.24M

$28.07M

544495VY7544495VY7Los Angeles Department of Water and Power, California, Power System Revenue Bonds, Federally Taxable - Direct Payment - Build America Bonds, Series 20

Los Angeles Department of Water and Power, California, Power System Revenue Bonds, Federally Taxable - Direct Payment - Build America Bonds, Series 20

5.32%

23.79M

$25.27M

626207YS7626207YS7Georgia Municipal Electric Authority, Plant Vogtle Units 3 & 4 Project P Bonds, Refunding Taxable Build America Bonds Series 2010A

Georgia Municipal Electric Authority, Plant Vogtle Units 3 & 4 Project P Bonds, Refunding Taxable Build America Bonds Series 2010A

4.35%

18.72M

$20.66M

235417AA0235417AA0Dallas Convention Center Hotel Development Corporation, Texas, Hotel Revenue Bonds, Build America Taxable Bonds, Series 09B

Dallas Convention Center Hotel Development Corporation, Texas, Hotel Revenue Bonds, Build America Taxable Bonds, Series 09B

3.75%

16.12M

$17.79M

592643AA8592643AA8Metropolitan Washington Airports Authority, Virginia, Dulles Toll Road Revenue Bonds, Dulles Metrorail & Capital improvement Projects, Second Senior L

Metropolitan Washington Airports Authority, Virginia, Dulles Toll Road Revenue Bonds, Dulles Metrorail & Capital improvement Projects, Second Senior L

3.56%

14.37M

$16.91M

54473ENS954473ENS9Los Angeles County Public Works Financing Authority, California, Lease Revenue Bonds, Mulitple Capital Projects I, Build America Taxable Bond Series 2

Los Angeles County Public Works Financing Authority, California, Lease Revenue Bonds, Mulitple Capital Projects I, Build America Taxable Bond Series 2

2.81%

11.38M

$13.34M

67884XCP067884XCP0Oklahoma Development Finance Authority, Health System Revenue Bonds, OU Medicine Project, Taxable Series 2018D

Oklahoma Development Finance Authority, Health System Revenue Bonds, OU Medicine Project, Taxable Series 2018D

2.75%

13.20M

$13.07M

16772PAQ916772PAQ9Chicago Transit Authority, Illinois, Sales Tax Receipts Revenue Bonds, Federally Taxable Build America Bonds, Series 2010B

Chicago Transit Authority, Illinois, Sales Tax Receipts Revenue Bonds, Federally Taxable Build America Bonds, Series 2010B

2.72%

12.29M

$12.91M

16080TAH816080TAH8Charlotte County Industrial Development Authority, Florida, Utility System Revenue Bonds, Town & Country Utilities Project, Taxable Series 2021B

Charlotte County Industrial Development Authority, Florida, Utility System Revenue Bonds, Town & Country Utilities Project, Taxable Series 2021B

2.68%

13.75M

$12.70M

59259YBY459259YBY4Metropolitan Transportation Authority, New York, Transportation Revenue Bonds, Federally Taxable Issuer Subsidy Build America Bonds, Series 2010A

Metropolitan Transportation Authority, New York, Transportation Revenue Bonds, Federally Taxable Issuer Subsidy Build America Bonds, Series 2010A

2.59%

11.39M

$12.31M

66285WFB766285WFB7North Texas Tollway Authority, System Revenue Bonds, Taxble Build America Bond Series 2009B

North Texas Tollway Authority, System Revenue Bonds, Taxble Build America Bond Series 2009B

2.37%

10.29M

$11.27M

837151AA7837151AA7South Carolina Public Service Authority, Electric System Revenue Bonds, Santee Cooper, Federally Taxable Build America Series 2010C

South Carolina Public Service Authority, Electric System Revenue Bonds, Santee Cooper, Federally Taxable Build America Series 2010C

2.35%

10.54M

$11.18M

64972HRB064972HRB0New York City Transitional Finance Authority, New York, Building Aid Revenue Bonds, Fiscal 2011 Taxable Build America Bond Series 2010S-1B

New York City Transitional Finance Authority, New York, Building Aid Revenue Bonds, Fiscal 2011 Taxable Build America Bond Series 2010S-1B

2.31%

10.01M

$10.95M

452252FH7452252FH7Illinois Toll Highway Authority, Toll Highway Revenue Bonds, Taxable Build America Bond Senior Lien Series 2009A

Illinois Toll Highway Authority, Toll Highway Revenue Bonds, Taxable Build America Bond Senior Lien Series 2009A

2.29%

10.31M

$10.86M

54438CNZ154438CNZ1Los Angeles Community College District, California, General Obligation Bonds, Build America Taxable Bonds, Series 2010

Los Angeles Community College District, California, General Obligation Bonds, Build America Taxable Bonds, Series 2010

2.22%

10.00M

$10.54M

452152FA4452152FA4Illinois State, General Obligation Bonds, Taxable Build America Bonds, Series 2010-3

Illinois State, General Obligation Bonds, Taxable Build America Bonds, Series 2010-3

2.15%

9.72M

$10.20M