X0201 N-CEN LIVE 0000746458 XXXXXXXX false false N-1A S000006471 C000017685 C000088012 C000189766 C000017686 C000017688 S000006472 C000017689 C000017691 C000189767 C000088013 C000088014 S000006473 C000017692 AMERICAN CENTURY MUNICIPAL TRUST 811-04025 0000746458 549300LWE02C3N77TY25 4500 Main Street Kansas City 64111 US-MO US 8165315575 State Street Bank and Trust Company State Street Financial Center One Lincoln Street Boston 02111 6177863000 Records relating to custody of fund assets and fund accounting JPMorgan Chase Bank 4 Metro Tech Center Brooklyn 11245 2122706000 Records relating to custody of fund assets and fund accounting American Century Investment Management, Inc. 4500 Main Street Kansas City 64111 8165315575 Records related to day-to-day portfolio management; sales literature American Century Investment Management, Inc. 1665 Charleston Road Mountain View 94043 8165315575 Records related to day-to-day portfolio management; sales literature American Century Services, LLC 4500 Main Street Kansas City 64111 8165315575 Corporate, governance, financial, and legal records; sales literature N N N-1A 3 Y Tanya S. Beder N/A N Jeremy I. Bulow N/A N Anne Casscells N/A N Frederick L.A. Grauer N/A N Jonathan D. Levin N/A N Peter F. Pervere N/A N John B. Shoven N/A N Ronald J. Gilson N/A N Jonathan S. Thomas N/A Y Amy D. Shelton 002556023 4500 Main Street Kansas City 64111 XXXXXX N N N N N N American Century Investment Services, Inc. 8-35220 000017437 N/A Y N PricewaterhouseCoopers LLP 00238 5493002GVO7EO8RNNS37 N N N N N N N High-Yield Municipal Fund S000006471 Y17UIXB580PSZBYV3P36 N 5 0 0 N/A N N N N N/A N/A N/A Rule 12d1-1 (17 CFR 270.12d1-1) Rule 17a-7 (17 CFR 270.17a-7) Rule 22d-1 (17 CFR 270.22d-1) Rule 32a-4 (17 CFR 270.32a-4) Y Y N N American Century Investment Management, Inc. 801-08174 000105778 EM2U0UPRO83F878KCP52 N American Century Services, LLC 84-01406 N/A Y N N ICE Data Pricing and Reference Data, LLC 5493000NQ9LYLDBCTL34 N IHS MARKIT GROUP HOLDINGS LIMITED 2138005LTLTVZ4WMEX25 GB N Refinitiv US Holdings Inc. 549300NF240HXJO7N016 N Virtu ITG LLC N/A N PricingDirect Inc. 549300WIC0TOJ7N7GD54 N Interactive Data Real Time Services, Inc. N/A N N State Street Bank and Trust Company 571474TGEMMWANRLN572 N N Bank - section 17(f)(1) (15 U.S.C. 80a-17(f)(1)) N American Century Services, LLC 84-01406 SEC file number Y N N American Century Services, LLC 84-01406 SEC file number Y N State Street Bank and Trust Company 571474TGEMMWANRLN572 N Y N American Century Investment Services, Inc. 8-35220 000017437 N/A 0.000000000000 Jane Street Group LLC 008-52275 000103782 549300ZM16HMPEPNV857 2094.000000000000 Liquidnet 008-52461 000103987 213800HSKBBO1GCVRG79 15.030000000000 Morgan Stanley 008-15869 000008209 9R7GPTSO7KV3UQJZQ078 664.000000000000 Sanford C. Bernstein 008-52942 000104474 549300GA5IHQHIM7CU60 276.970000000000 3050.000000000000 Barclays Capital 008-41342 000019714 AC28XWWI3WIBK2824319 164366258.000000000000 Muriel Siebert and Co. Inc. 008-14900 000005376 254900ILZFIE2ULRPV24 34059282.000000000000 Bank of America Merrill Lynch 008-07221 000007691 549300HN4UKV1E2R3U73 161173906.000000000000 J.P. Morgan Securities 008-35008 000000079 ZBUT11V806EZRVTWT807 155704371.000000000000 Citigroup Capital Markets Inc 008-08177 000007059 MBNUM2BPBDO7JBLYG310 92673119.000000000000 Wells Fargo Securities 008-65876 000126292 VYVVCKR63DVZZN70PB21 68264546.000000000000 Morgan Stanley 008-15869 000008209 9R7GPTSO7KV3UQJZQ078 52082488.000000000000 Piper Jaffray 008-15204 000000665 549300GRQCWQ3XGH0H10 45748460.000000000000 Jefferies LLC 008-15074 000002347 58PU97L1C0WSRCWADL48 40117169.000000000000 B.C. Ziegler and Company 008-00094 000000061 549300NLEOFP92P38Q71 36174830.000000000000 984232966.000000000000 N 726548475.086154000000 N N N N Intermediate-Term Tax-Free Bond Fund S000006472 N34IG7F8B7ZLN3TQY404 N 5 0 0 N/A N N N N N/A N/A N/A Rule 12d1-1 (17 CFR 270.12d1-1) Rule 17a-7 (17 CFR 270.17a-7) Rule 22d-1 (17 CFR 270.22d-1) Rule 32a-4 (17 CFR 270.32a-4) N N N N American Century Investment Management, Inc. 801-08174 000105778 EM2U0UPRO83F878KCP52 N American Century Services, LLC 84-01406 N/A Y N N ICE Data Pricing and Reference Data, LLC 5493000NQ9LYLDBCTL34 N IHS MARKIT GROUP HOLDINGS LIMITED 2138005LTLTVZ4WMEX25 GB N Refinitiv US Holdings Inc. 549300NF240HXJO7N016 N Virtu ITG LLC N/A N PricingDirect Inc. 549300WIC0TOJ7N7GD54 N Interactive Data Real Time Services, Inc. N/A N N State Street Bank and Trust Company 571474TGEMMWANRLN572 N N Bank - section 17(f)(1) (15 U.S.C. 80a-17(f)(1)) N American Century Services, LLC 84-01406 SEC file number Y N N American Century Services, LLC 84-01406 SEC file number Y N State Street Bank and Trust Company 571474TGEMMWANRLN572 N Y N American Century Investment Services, Inc. 8-35220 000017437 N/A 0.000000000000 J.P. Morgan Securities 008-35008 000000079 ZBUT11V806EZRVTWT807 4977.000000000000 Jane Street Group LLC 008-52275 000103782 549300ZM16HMPEPNV857 6307.500000000000 Liquidnet 008-52461 000103987 213800HSKBBO1GCVRG79 89.970000000000 Morgan Stanley 008-15869 000008209 9R7GPTSO7KV3UQJZQ078 3995.000000000000 Sanford C. Bernstein 008-52942 000104474 549300GA5IHQHIM7CU60 1970.030000000000 Virtu Financial LLC 008-51262 000045986 Q1YYTO5MBHNGETR9DT80 2268.000000000000 19607.500000000000 J.P. Morgan Securities 008-35008 000000079 ZBUT11V806EZRVTWT807 651466943.000000000000 Muriel Siebert and Co. Inc. 008-14900 000005376 254900ILZFIE2ULRPV24 117612269.000000000000 Bank of America Merrill Lynch 008-07221 000007691 549300HN4UKV1E2R3U73 560866469.000000000000 Barclays Capital 008-41342 000019714 AC28XWWI3WIBK2824319 494651557.000000000000 Wells Fargo Securities 008-65876 000126292 VYVVCKR63DVZZN70PB21 282122803.000000000000 Citigroup Capital Markets Inc 008-08177 000007059 MBNUM2BPBDO7JBLYG310 266884076.000000000000 Morgan Stanley 008-15869 000008209 9R7GPTSO7KV3UQJZQ078 246668820.000000000000 Jefferies LLC 008-15074 000002347 58PU97L1C0WSRCWADL48 214500885.000000000000 RBC Capital Markets 008-45411 000031194 549300LCO2FLSSVFFR64 188833959.000000000000 Goldman Sachs 008-00129 000000361 FOR8UP27PHTHYVLBNG30 124436895.000000000000 3636095069.000000000000 N 3996552764.830770000000 N N N N Tax-Free Money Market Fund S000006473 549300IDYMDLKNF7CY02 N 1 0 0 Money Market Fund N N N N N/A N/A N/A Rule 12d1-1 (17 CFR 270.12d1-1) Rule 17a-7 (17 CFR 270.17a-7) Rule 32a-4 (17 CFR 270.32a-4) Y Y N N American Century Investment Management, Inc. 801-08174 000105778 EM2U0UPRO83F878KCP52 N American Century Services, LLC 84-01406 N/A Y N N ICE Data Pricing and Reference Data, LLC 5493000NQ9LYLDBCTL34 N IHS MARKIT GROUP HOLDINGS LIMITED 2138005LTLTVZ4WMEX25 GB N Refinitiv US Holdings Inc. 549300NF240HXJO7N016 N Virtu ITG LLC N/A N PricingDirect Inc. 549300WIC0TOJ7N7GD54 N Interactive Data Real Time Services, Inc. N/A N N State Street Bank and Trust Company 571474TGEMMWANRLN572 N N Bank - section 17(f)(1) (15 U.S.C. 80a-17(f)(1)) N American Century Services, LLC 84-01406 SEC file number Y N N American Century Services, LLC 84-01406 SEC file number Y N State Street Bank and Trust Company 571474TGEMMWANRLN572 N Y N American Century Investment Services, Inc. 8-35220 000017437 N/A 0.000000000000 0.000000000000 Bank of America Merrill Lynch 008-07221 000007691 549300HN4UKV1E2R3U73 413362736.000000000000 Goldman Sachs 008-00129 000000361 FOR8UP27PHTHYVLBNG30 40997384.000000000000 Barclays Capital 008-41342 000019714 AC28XWWI3WIBK2824319 150102163.000000000000 J.P. Morgan Securities 008-35008 000000079 ZBUT11V806EZRVTWT807 127975156.000000000000 Citigroup Capital Markets Inc 008-08177 000007059 MBNUM2BPBDO7JBLYG310 125454958.000000000000 Wells Fargo Securities 008-65876 000126292 VYVVCKR63DVZZN70PB21 123227305.000000000000 PNC Capital Markets, LLC 008-32493 000015647 7OGNSSLOQJ8U3B9Y5F18 106034894.000000000000 Jefferies LLC 008-15074 000002347 58PU97L1C0WSRCWADL48 104048300.000000000000 BNY Mellon Capital Markets, LLC 008-35255 000017454 VJW2DOOHGDT6PR0ZRO63 55484157.000000000000 Morgan Stanley 008-15869 000008209 9R7GPTSO7KV3UQJZQ078 42138560.000000000000 1445348767.000000000000 N 140064108.948965000000 N N N N true