American Century High-Yield Muni Y (AYMYX)

Fund Assets	513.25M
Expense Ratio	0.37%
Min. Investment	$2,500
Turnover	49.00%
Dividend (ttm)	0.40
Dividend Yield	4.83%
Dividend Growth	0.10%
Payout Frequency	Monthly
Ex-Dividend Date	Sep 30, 2026

Previous Close	8.17
YTD Return	-1.98%
1-Year Return	-0.84%
5-Year Return	-0.31%
52-Week Low	8.07
52-Week High	8.86
Beta (5Y)	0.12
Holdings	419
Inception Date	Apr 10, 2017

About AYMYX

The American Century High-Yield Municipal Fund Y is an open-end mutual fund that focuses primarily on generating a high level of federally tax-exempt income. Its core strategy involves investing in municipal and other debt securities, with a significant allocation to high-yield, or below investment-grade, bonds issued by state and local governments or agencies. This approach allows the fund to offer a yield profile higher than that of mainstream municipal bond funds, while still providing its investors with the advantage of federal income tax exemption on interest payments. This fund is typically categorized within the high-yield municipal sector, targeting investors seeking income efficiency through tax-exempt sources. The portfolio may carry elevated credit risk compared to investment-grade municipal funds due to its emphasis on lower-rated issuers, but it plays a vital role in diversifying portfolio income streams. Additionally, the fund's holdings often span a variety of municipal projects, such as infrastructure, education, and public utilities, reflecting its broad participation in public-sector financing across the United States. Class Y shares are generally structured for institutional or intermediary investors, often characterized by lower expense ratios and a focus on efficient fund management.

• Fund Family: American Century Investments
• Category: High Yield Muni
• Performance Rating: Above Average
• Risk Rating: Average
• Stock Exchange: Nasdaq
• Ticker Symbol: AYMYX
• Share Class: Y Class
• Index: Index is not available on Lipper Database

Performance

AYMYX had a total return of -0.84% in the past year, including dividends. Since the fund's inception, the average annual return has been 2.80%.

Other Share Classes

These are alternative share classes of the same fund, from the same provider.

Symbol	Share Class	Expense Ratio
AYMIX	I Class	0.40%
ABHYX	Investor Class	0.60%
AYMAX	A Class	0.85%
AYMCX	C Class	1.60%

Dividend History

Ex-Dividend	Amount	Pay Date
Sep 30, 2026	$0.03367	Sep 30, 2026
Aug 31, 2026	$0.03162	Aug 31, 2026
Jul 31, 2026	$0.03534	Jul 31, 2026
Jun 30, 2026	$0.03215	Jun 30, 2026
May 29, 2026	$0.03175	May 29, 2026
Apr 30, 2026	$0.03224	Apr 30, 2026

Data Sources: Tiingo, Twelve Data, and more

Historical data is provided by Tiingo. Delayed stock pricing data is provided by Twelve Data. Several fund data points are also provided by Finnhub.

Last checked:

Oct 16, 2026

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