AYMYX
High-Yield Municipal Fund
American Century Municipal Trust

Portfolio concentration

As of February 28, 2026 · N-PORT
Holdings
411
Top-10 weight
8.89%
Effective holdings ?
268
Crowding ?
30.3

Holdings

As of February 28, 2026 · N-PORT
#SecurityTickerSharesValue% of fund
1 OH BUCGEN 5 06/01/2055 BUCGEN 8,000,000 $6.62M 1.15%
2 BUILD NYC RESOURCE CORP NY REVENUE 6,000,000 $5.99M 1.04%
3 MUNIBOND CENPWR 5,000,000 $5.32M 0.93%
4 STATE OF NEW JERSEY 5.0% 06-15-44 NJSTRN 5,000,000 $5.17M 0.90%
5 PUBLIC FIN AUTH WI REVENUE REGD OID B/E 5.25000000 PUBGEN 5,000,000 $5.04M 0.88%
6 St. Louis (County of), MO Industrial Development Authority (Friendship Village West County), Series 2018 A, RB STLDEV 5,000,000 $5.02M 0.87%
7 NJ EDA SPL 5% 10/1/2047@ NJSDEV 5,000,000 $5.01M 0.87%
8 ESCAMBIA FL HSP 4% 8/15/45 ESCMED 4,860,000 $4.38M 0.76%
9 NEW YORK NY REGD B/E 5.00000000 NYC 4,040,000 $4.17M 0.73%
10 UIPA CROSSROADS PUBLIC INFRASTRUCTURE DISTRICT AJL PROJECT AREA 4.375% 06-01-52 UIPDEV 4,250,000 $3.96M 0.69%
11 HASTINGS CAMPUS HSG FIN AUTH CA CAMPUS HSG REVENUE HCHGEN 7,660,000 $3.94M 0.68%
12 MAIN STR NAT GA 5% MT MAIUTL 3,645,000 $3.91M 0.68%
13 NY TRANS CORP 4% 12/1/2040 NYTTRN 3,800,000 $3.81M 0.66%
14 IL CHIEDU 5 12/01/2042 CHIEDU 3,815,000 $3.81M 0.66%
15 Tempe Industrial Development Authority, Series 2017 A TEMDEV 4,650,000 $3.78M 0.66%
16 Columbus-Franklin County Finance Authority 6.50% 03/01/2048 COLFIN 5,670,000 $3.71M 0.65%
17 IOWA ST FIN AUTH REVENUE IASGEN 3,720,000 $3.58M 0.62%
18 GRIFFIN HEALTH OBLIGATED GROUP 5.0% 07-01-50 CTSHGR 3,750,000 $3.54M 0.62%
19 COLORADO ST HLTH FACS AUTH REV REGD B/E 5.50000000 COSMED 3,325,000 $3.52M 0.61%
20 W VIRGINIA ST H-SER B WVSMED 3,250,000 $3.48M 0.61%
21 District of Columbia Tobacco Settlement Financing Corp., Series 2006 B, RB DISGEN 15,000,000 $3.48M 0.60%
22 ILLINOIS ST FIN AUTH CHRT SCHR REGD B/E 5.00000000 ILSEDU 3,500,000 $3.46M 0.60%
23 Metropolitan Transportation Authority, Series 2021, RB MTATRN 3,805,000 $3.45M 0.60%
24 St Louis County Industrial Development Authority, Series A STLMED 3,600,000 $3.30M 0.57%
25 MAIN STR NAT GA 5% MT MAIUTL 3,000,000 $3.30M 0.57%
26 White County Development Authority, Georgia, Revenue Bonds Truett McConnell University, Series 2019 WTEDEV 4,000,000 $3.16M 0.55%
27 State of Illinois 5.13% 12/01/2029 ILS 3,000,000 $3.14M 0.55%
28 Idaho Health Facilities Authority 5.50% 11/01/2045 IDSMED 3,250,000 $3.13M 0.55%
29 PEOPLE OF FAITH INC OBLIGATED GROUP 5.0% 05-15-56 GLEDEV 3,500,000 $3.06M 0.53%
30 Town of Millsboro, Series 2018 MLBOBL 2,991,000 $2.97M 0.52%
31 PUERTO RICO SALES TAX FING COR REGD OID B/E 4.75000000 PRCGEN 3,000,000 $2.93M 0.51%
32 Tahoe-Douglas Visitors Authority 5.00% 07/01/2045 TADDEV 2,850,000 $2.90M 0.51%
33 VLG FL CDD #14 SPL ASSMNT REVENUE VILDEV 2,820,000 $2.88M 0.50%
34 MARYLD ST EC DV 4% 9/1/2050 MDSDEV 3,370,000 $2.86M 0.50%
35 NORTH CAROLINA ST MED CARE COMMISSION RETMNT FACS REVENUE NCSMED 3,000,000 $2.79M 0.49%
36 BLACK BELT GAS DT-E BBEUTL 2,500,000 $2.74M 0.48%
37 TX PRIVATE ACTIVITY TXSTRN 2,625,000 $2.73M 0.47%
38 WINROCK TWN CTR-REF WINGEN 2,750,000 $2.71M 0.47%
39 NY TRANS CORP 5% 12/1/2041 @ NYTTRN 2,535,000 $2.70M 0.47%
40 PUERTO RICO SALES TAX FING COR REGD ZCP OID B/E 0.00000000 PRCGEN 10,000,000 $2.63M 0.46%
41 Wisconsin (State of) Public Finance Authority (Southminster), Series 2018, RB PUBFIN 2,750,000 $2.62M 0.46%
42 TX HOUAPT 5.25 07/01/2048 HOUAPT 2,500,000 $2.62M 0.46%
43 WI PUBTRN 5.75 12/31/2065 PUBTRN 2,500,000 $2.62M 0.46%
44 SOUTHEAST ENRG 5% MT SEEPWR 2,400,000 $2.58M 0.45%
45 OGLETHORPE POWER CORP (MPT) 3.6% 01-01-40 BURPOL 2,500,000 $2.58M 0.45%
46 State of Illinois, Series 2020 ILS 2,400,000 $2.55M 0.44%
47 Tomoka Community Development District 5.50% 05/01/2035 TOMDEV 2,500,000 $2.55M 0.44%
48 City of Chicago IL 5.63% 01/01/2029 CHI 2,500,000 $2.54M 0.44%
49 Cleveland-Cuyahoga County Port Authority, Series 2018 CLETRN 2,500,000 $2.51M 0.44%
50 RESTRUCTURED-SER A-2- PRCGEN 2,500,000 $2.51M 0.44%
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