What are the top holdings of ABHYX?

American Century High-Yield Municipal Fund Investor Class holds 959 securities in total. The largest positions and their portfolio weights are listed on the Holdings tab.

How many holdings does ABHYX have?

ABHYX holds 959 positions as reported by the fund's most recent disclosure.

What sectors does ABHYX invest in?

American Century High-Yield Municipal Fund Investor Class (ABHYX) allocates across the sectors shown above. The largest exposure tops the list; the rest follow in descending weight order.

What sector is ABHYX most exposed to?

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

Is ABHYX a US-only fund?

The country allocation card on this page shows ABHYX'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 ABHYX invest in?

Seeks high current income that is exempt from federal income tax, seeks capital appreciation as a secondary objective

ABHYX

American Century High-Yield Municipal Fund Investor Class

NASDAQ·Asset Management · Financial Services

$8.35$0.02+0.24%

Market closed·Oct 23 4:00 PM EDT

Portfolio as of February 28, 2026, from the fund's SEC Form N-PORT filing. Funds disclose holdings quarterly, with a ~60-day publication delay. Sector breakdowns aren't part of this filing, so none is shown.

Top Holdings

411

holdings

BUCGEN
Buckeye Tobacco Settlement Financing Authority
1.15%
BUIGEN
RIVERSPRING HLTH SENIOR
1.04%
CENPWR
Central Plains Energy Project
0.93%
NJSTRN
New Jersey Transportation Trust Fund Authority
0.90%
PUBGEN
Public Finance Authority
0.88%
STLDEV
FRNDSHP VLG ST LOUIS OBLG
0.87%
NJSDEV
PORT NEWARK CONTAINER
0.87%
ESCMED
BAPTIST HOSP INC OBLIG GP
0.76%
NYC
City of New York NY
0.73%
UIPDEV
Uipa Crossroads Public Infrastructure District
0.69%
Other
401 more holdings
90.38%

Top 10 holdings

8.82%

Top 25 holdings

18.22%

Concentration index

0.0037

Effective holdings

268

Chart tools

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

All Holdings (411)

#	TickerHolding	Name	Weight	Shares	Market Value
1	BUCGENBUCGENBuckeye Tobacco Settlement Financing Authority	Buckeye Tobacco Settlement Financing Authority	1.15%	8.00M	$6.62M
2	BUIGENBUIGENRIVERSPRING HLTH SENIOR	RIVERSPRING HLTH SENIOR	1.04%	6.00M	$5.99M
3	CENPWRCENPWRCentral Plains Energy Project	Central Plains Energy Project	0.93%	5.00M	$5.32M
4	NJSTRNNJSTRNNew Jersey Transportation Trust Fund Authority	New Jersey Transportation Trust Fund Authority	0.90%	5.00M	$5.17M
5	PUBGENPUBGENPublic Finance Authority	Public Finance Authority	0.88%	5.00M	$5.04M
6	STLDEVSTLDEVFRNDSHP VLG ST LOUIS OBLG	FRNDSHP VLG ST LOUIS OBLG	0.87%	5.00M	$5.02M
7	NJSDEVNJSDEVPORT NEWARK CONTAINER	PORT NEWARK CONTAINER	0.87%	5.00M	$5.01M
8	ESCMEDESCMEDBAPTIST HOSP INC OBLIG GP	BAPTIST HOSP INC OBLIG GP	0.76%	4.86M	$4.38M
9	NYCNYCCity of New York NY	City of New York NY	0.73%	4.04M	$4.17M
10	UIPDEVUIPDEVUipa Crossroads Public Infrastructure District	Uipa Crossroads Public Infrastructure District	0.69%	4.25M	$3.96M
11	HCHGENHCHGENHastings Campus Housing Finance Authority	Hastings Campus Housing Finance Authority	0.68%	7.66M	$3.94M
12	MAIUTLMAIUTLMain Street Natural Gas Inc	Main Street Natural Gas Inc	0.68%	3.65M	$3.91M
13	NYTTRNNYTTRNJFK INTL AIR TERMINAL LLC	JFK INTL AIR TERMINAL LLC	0.66%	3.80M	$3.81M
14	CHIEDUCHIEDUChicago Board of Education	Chicago Board of Education	0.66%	3.82M	$3.81M
15	TEMDEVTEMDEVMIRABELLA AT ASU INC	MIRABELLA AT ASU INC	0.66%	4.65M	$3.78M
16	COLFINCOLFINOHIO DOMINICAN UNIVERSITY	OHIO DOMINICAN UNIVERSITY	0.65%	5.67M	$3.71M
17	IASGENIASGENLIFESPACE COMMUNITIES OBL	LIFESPACE COMMUNITIES OBL	0.62%	3.72M	$3.58M
18	CTSHGRCTSHGRGRIFFIN HEALTH OBLIG GRP	GRIFFIN HEALTH OBLIG GRP	0.62%	3.75M	$3.54M
19	COSMEDCOSMEDCRAIG HOSPITAL OBLIG GRP	CRAIG HOSPITAL OBLIG GRP	0.61%	3.33M	$3.52M
20	WVSMEDWVSMEDVANDALIA HLTH OBLIG GRP	VANDALIA HLTH OBLIG GRP	0.61%	3.25M	$3.48M

Showing 20 of 411

Sectors

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

Countries

countries

United States
96.34%
Puerto Rico
2.62%
United Kingdom
0.24%

Top 3 countries

99.20%

Top 5 countries

99.20%

Concentration index

0.9439

Effective countries

Chart tools

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

Asset Classes

Primary asset class

Fixed income

Strategy

Thematic

Income strategy

Bond yield

Issuer-reported asset class: Fixed Income

Frequently Asked Questions About ABHYX

What are the top holdings of ABHYX?: American Century High-Yield Municipal Fund Investor Class holds 959 securities in total. The largest positions and their portfolio weights are listed on the Holdings tab.
How many holdings does ABHYX have?: ABHYX holds 959 positions as reported by the fund's most recent disclosure.
What sectors does ABHYX invest in?: American Century High-Yield Municipal Fund Investor Class (ABHYX) allocates across the sectors shown above. The largest exposure tops the list; the rest follow in descending weight order.
What sector is ABHYX most exposed to?: ABHYX's full sector breakdown is on the Sectors tab. The largest sector weight is shown there along with the rest of the allocation.
Is ABHYX a US-only fund?: The country allocation card on this page shows ABHYX'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 ABHYX invest in?: Seeks high current income that is exempt from federal income tax, seeks capital appreciation as a secondary objective

TickerHolding

Name

Weight

Market Value

BUCGENBUCGENBuckeye Tobacco Settlement Financing Authority

Buckeye Tobacco Settlement Financing Authority

1.15%

8.00M

$6.62M

BUIGENBUIGENRIVERSPRING HLTH SENIOR

RIVERSPRING HLTH SENIOR

1.04%

6.00M

$5.99M

CENPWRCENPWRCentral Plains Energy Project

Central Plains Energy Project

0.93%

5.00M

$5.32M

NJSTRNNJSTRNNew Jersey Transportation Trust Fund Authority

New Jersey Transportation Trust Fund Authority

0.90%

5.00M

$5.17M

PUBGENPUBGENPublic Finance Authority

Public Finance Authority

0.88%

5.00M

$5.04M

STLDEVSTLDEVFRNDSHP VLG ST LOUIS OBLG

FRNDSHP VLG ST LOUIS OBLG

0.87%

5.00M

$5.02M

NJSDEVNJSDEVPORT NEWARK CONTAINER

PORT NEWARK CONTAINER

0.87%

5.00M

$5.01M

ESCMEDESCMEDBAPTIST HOSP INC OBLIG GP

BAPTIST HOSP INC OBLIG GP

0.76%

4.86M

$4.38M

NYCNYCCity of New York NY

City of New York NY

0.73%

4.04M

$4.17M

UIPDEVUIPDEVUipa Crossroads Public Infrastructure District

Uipa Crossroads Public Infrastructure District

0.69%

4.25M

$3.96M

HCHGENHCHGENHastings Campus Housing Finance Authority

Hastings Campus Housing Finance Authority

0.68%

7.66M

$3.94M

MAIUTLMAIUTLMain Street Natural Gas Inc

Main Street Natural Gas Inc

0.68%

3.65M

$3.91M

NYTTRNNYTTRNJFK INTL AIR TERMINAL LLC

JFK INTL AIR TERMINAL LLC

0.66%

3.80M

$3.81M

CHIEDUCHIEDUChicago Board of Education

Chicago Board of Education

0.66%

3.82M

$3.81M

TEMDEVTEMDEVMIRABELLA AT ASU INC

MIRABELLA AT ASU INC

0.66%

4.65M

$3.78M

COLFINCOLFINOHIO DOMINICAN UNIVERSITY

OHIO DOMINICAN UNIVERSITY

0.65%

5.67M

$3.71M

IASGENIASGENLIFESPACE COMMUNITIES OBL

LIFESPACE COMMUNITIES OBL

0.62%

3.72M

$3.58M

CTSHGRCTSHGRGRIFFIN HEALTH OBLIG GRP

GRIFFIN HEALTH OBLIG GRP

0.62%

3.75M

$3.54M

COSMEDCOSMEDCRAIG HOSPITAL OBLIG GRP

CRAIG HOSPITAL OBLIG GRP

0.61%

3.33M

$3.52M

WVSMEDWVSMEDVANDALIA HLTH OBLIG GRP

VANDALIA HLTH OBLIG GRP

0.61%

3.25M

$3.48M