American Century High-Yield Municipal Fund I (AYMIX)
8.77
0.00 (0.00%)
USD |
Jan 16 2026
Returns Chart
Key Stats
| Net Expense Ratio | Total Assets Under Management | Weighted Average Dividend Yield | Turnover Ratio (Generic) |
|---|---|---|---|
| 0.40% | 561.57M | -- | 47.00% |
| 1 Year Fund Level Flows | 1 Year Total Returns (Daily) | Annualized Total Returns Since Inception (Daily) | Max Drawdown (Since Inception) |
| -31.70M | 4.57% | Upgrade | Upgrade |
Basic Info
| Investment Strategy | |
| The Fund seeks to provide a high current income exempt from federal income taxes, with capital appreciation as a secondary objective. The Fund invests in municipal and other debt securities with an emphasis on high-yield securities. A high-yield security is one that has been rated below investment grade. |
| General | |
| Security Type | Mutual Fund |
| Equity Style | -- |
| Broad Asset Class | Municipal Bond |
| Broad Category | Fixed Income |
| Global Peer Group | Bond USD Municipal High Yield |
| Peer Group | High Yield Municipal Debt Funds |
| Global Macro | Bond High Yield |
| US Macro | National Municipal Debt Funds |
| YCharts Categorization | -- |
| YCharts Benchmark | -- |
| Prospectus Objective | High Yield Municipal Debt Funds |
| Fund Owner Firm Name | American Century Investments |
| Broad Asset Class Benchmark Index | |
| ^BBMBTR | 100.0% |
Net Fund Flows Versus Peer Group
1 Month
% Rank:
63
-707.71M
Peer Group Low
374.78M
Peer Group High
1 Year
% Rank:
61
-31.70M
-2.613B
Peer Group Low
2.533B
Peer Group High
3 Months
% Rank:
65
-618.93M
Peer Group Low
674.11M
Peer Group High
3 Years
% Rank:
82
-5.900B
Peer Group Low
7.649B
Peer Group High
6 Months
% Rank:
70
-945.73M
Peer Group Low
2.164B
Peer Group High
5 Years
% Rank:
73
-6.006B
Peer Group Low
10.67B
Peer Group High
YTD
% Rank:
--
2.503M
Peer Group Low
2.503M
Peer Group High
10 Years
% Rank:
77
-4.816B
Peer Group Low
14.81B
Peer Group High
Date Unavailable
Risk
Performance Versus Peer Group
Annual Total Returns Versus Peers
As of January 19, 2026.
Asset Allocation
As of September 30, 2025.
| Type | % Net |
|---|---|
| Cash | -0.08% |
| Stock | 0.00% |
| Bond | 99.63% |
| Convertible | 0.00% |
| Preferred | 0.00% |
| Other | 0.46% |
Top 10 Holdings
| Name | % Weight | Price | % Change |
|---|---|---|---|
| BUCKEYE OHIO TOB SETTLEMENT FING AUTH OH 5.000 06/01/2055 | 1.80% | 83.05 | 0.28% |
| CENTRAL PLAINS ENERGY PROJ NEB GAS PROJ REV NE 5.000 05/01/2053 | 0.94% | 105.55 | 0.02% |
| NEW JERSEY ST TRANSN TR FD AUTH NJ 5.000 06/15/2044 | 0.92% | 102.88 | 0.04% |
| SOUTH CAROLINA JOBS-ECONOMIC DEV AUTH RETIREMENT CMNTY REV SC 5.250 11/15/2028 | 0.90% | -- | -- |
| NEW JERSEY ECONOMIC DEV AUTH SPL FAC REV NJ 5.000 10/01/2047 | 0.90% | 99.99 | 0.24% |
| ST LOUIS CNTY MO INDL DEV AUTH SR LIVING FACS REV MO 5.250 09/01/2053 | 0.87% | 97.72 | 0.00% |
| PUBLIC FIN AUTH WIS REV WI 5.250 12/01/2054 | 0.85% | 95.06 | 0.00% |
| ESCAMBIA CNTY FLA HEALTH FACS AUTH HEALTH FAC REV FL 4.000 08/15/2045 | 0.77% | 89.95 | 0.25% |
| NEW YORK N Y NY 5.000 04/01/2043 | 0.74% | 101.67 | 0.03% |
| UIPA CROSSROADS PUB INFRASTRUCTURE DIST UTAH TAX DIFFERENTIAL REV UT 4.375 06/01/2052 | 0.70% | 95.00 | 0.00% |
Fees & Availability
| Fees | |
| Actual 12B-1 Fee | -- |
| Actual Management Fee | 0.39% |
| Administration Fee | -- |
| Maximum Front Load | -- |
| Maximum Deferred Load | -- |
| Maximum Redemption Fee | -- |
| General Availability | |
| Available for Insurance Product | No |
| Available for RRSP | No |
| Purchase Details | |
| Open to New Investors |
|
| Minimum Initial Investment | 5.00M None |
| Minimum Subsequent Investment | 0.00 None |
Basic Info
| Investment Strategy | |
| The Fund seeks to provide a high current income exempt from federal income taxes, with capital appreciation as a secondary objective. The Fund invests in municipal and other debt securities with an emphasis on high-yield securities. A high-yield security is one that has been rated below investment grade. |
| General | |
| Security Type | Mutual Fund |
| Equity Style | -- |
| Broad Asset Class | Municipal Bond |
| Broad Category | Fixed Income |
| Global Peer Group | Bond USD Municipal High Yield |
| Peer Group | High Yield Municipal Debt Funds |
| Global Macro | Bond High Yield |
| US Macro | National Municipal Debt Funds |
| YCharts Categorization | -- |
| YCharts Benchmark | -- |
| Prospectus Objective | High Yield Municipal Debt Funds |
| Fund Owner Firm Name | American Century Investments |
| Broad Asset Class Benchmark Index | |
| ^BBMBTR | 100.0% |
Fundamentals
| General | |
| Distribution Yield | -- |
| Dividend Yield TTM (1-15-26) | 4.54% |
| 30-Day SEC Yield (12-31-25) | 4.68% |
| 7-Day SEC Yield | -- |
| Number of Holdings | 407 |
| Bond | |
| Yield to Maturity (9-30-25) | 5.00% |
| Effective Duration | 8.50 |
| Average Coupon | 5.06% |
| Calculated Average Quality | 3.570 |
| Effective Maturity | 13.58 |
| Nominal Maturity | 21.93 |
| Number of Bond Holdings | 398 |
As of September 30, 2025
Fund Details
Top Portfolio Holders
| Name | % Weight |
|---|---|
| Portfolio A | 5.00% |
| Portfolio B | 3.50% |
| Portfolio C | 2.25% |
Excel Add-In Codes
| Name: =YCI("M:AYMIX", "name") |
| Broad Asset Class: =YCI("M:AYMIX", "broad_asset_class") |
| Broad Category: =YCI("M:AYMIX", "broad_category_group") |
| Prospectus Objective: =YCI("M:AYMIX", "prospectus_objective") |
| To find the codes for any of our securities and financial metrics, see our Complete Excel Reference. |