American Century Companies Portfolio holdings
American Century Companies, Inc., founded in 1958 by James E. Stowers Jr. as Twentieth Century Mutual Funds and headquartered in Kansas City, Missouri, is a privately held investment management firm renowned for its focus on delivering investment results to clients while supporting medical research. Starting with just $100,000 from 24 shareholders, it rebranded to American Century Investments in 1997 and now manages hundreds of billions in assets across mutual funds, ETFs, and institutional portfolios, emphasizing no-load funds and a client-centric approach. The firm’s unique ownership structure sees over 40% of its profits funneled to the Stowers Institute for Medical Research, which it majority-owns, funding groundbreaking biomedical research, while Nomura Holdings holds a significant minority stake. With a global presence in cities like New York, London, and Hong Kong, and a workforce of around 1,400, American Century blends financial expertise with a mission to improve lives through both wealth creation and scientific advancement.
Top Buys
| Rank | Stock | Value |
|---|---|---|
| 1 |
Microsoft
MSFT
|
+$430M |
| 2 |
MRSH
Marsh
MRSH
|
+$342M |
| 3 |
Honeywell
HON
|
+$212M |
| 4 |
Owens Corning
OC
|
+$206M |
| 5 |
Coeur Mining
CDE
|
+$174M |
Top Sells
| Rank | Stock | Value |
|---|---|---|
| 1 |
Amazon
AMZN
|
+$513M |
| 2 |
Alphabet (Google) Class A
GOOGL
|
+$440M |
| 3 |
NVIDIA
NVDA
|
+$416M |
| 4 |
Kenvue
KVUE
|
+$306M |
| 5 |
Apple
AAPL
|
+$213M |
Sector Composition
| Rank | Sector | Weight |
|---|---|---|
| 1 | Technology | 25.15% |
| 2 | Financials | 13.37% |
| 3 | Consumer Discretionary | 11.55% |
| 4 | Industrials | 10.99% |
| 5 | Healthcare | 9.31% |
| Name | Market Value | Portfolio Weight | Shares or Principal |
Change in Stake | Capital Flow | |
|---|---|---|---|---|---|---|
1876
Rambus
RMBS
$10.4B
| $3.91M | ﹤0.01% |
45,490
-12,812
| -22% | -$1.28M |
|
1877
Manitowoc
MTW
$678M
| $3.9M | ﹤0.01% |
335,074
-17,921
| -5% | -$240K |
|
1878
Moderna
MRNA
$23.9B
| $3.9M | ﹤0.01% |
76,687
+18,173
| +31% | +$848K |
|
1879
Ezcorp Inc
EZPW
$1.67B
| $3.89M | ﹤0.01% |
153,411
+2,637
| +2% | +$63.2K |
|
1880
Federal Realty Investment Trust
FRT
$10.2B
| $3.88M | ﹤0.01% |
36,501
+3,005
| +9% | +$314K |
|
1881
Companhia Siderúrgica Nacional
SID
$1.19B
| $3.86M | ﹤0.01% |
3,112,770
+566,433
| +22% | +$925K |
|
|
AVNS
1882
DELISTED
Avanos Medical
AVNS
| $3.85M | ﹤0.01% |
274,921
+160,153
| +140% | +$2.16M |
|
1883
WD-40
WDFC
$3.15B
| $3.85M | ﹤0.01% |
18,876
+4,197
| +29% | +$937K |
|
1884
Progyny
PGNY
$2.18B
| $3.83M | ﹤0.01% |
225,792
+17,216
| +8% | +$369K |
|
1885
Super Micro Computer
SMCI
$20.4B
| $3.8M | ﹤0.01% |
166,849
-52,687
| -24% | -$1.58M |
|
|
AII
1886
American Integrity Insurance
AII
$403M
| $3.79M | ﹤0.01% |
196,694
+99,303
| +102% | +$1.89M |
|
1887
Telus
TU
$15.1B
| $3.76M | ﹤0.01% |
292,879
+19,800
| +7% | +$268K |
|
1888
Procore
PCOR
$8.84B
| $3.75M | ﹤0.01% |
65,825
+40,068
| +156% | +$2.37M |
|
1889
Superior Group of Companies
SGC
$206M
| $3.75M | ﹤0.01% |
369,024
-9,667
| -3% | -$97.4K |
|
1890
Deluxe
DLX
$1.12B
| $3.74M | ﹤0.01% |
135,660
-543,174
| -80% | -$14.2M |
|
1891
CTS Corp
CTS
$1.85B
| $3.72M | ﹤0.01% |
77,980
+257
| +0.3% | +$12.9K |
|
1892
German American Bancorp
GABC
$1.87B
| $3.72M | ﹤0.01% |
88,969
-1,593
| -2% | -$65.9K |
|
|
SMC
1893
Summit Midstream
SMC
$440M
| $3.7M | ﹤0.01% |
122,421
+82,122
| +204% | +$2.39M |
|
1894
Cooper Companies
COO
$14.9B
| $3.69M | ﹤0.01% |
51,637
+3,876
| +8% | +$307K |
|
1895
Fastly Inc
FSLY
$4.42B
| $3.67M | ﹤0.01% |
126,409
-39,043
| -24% | -$641K |
|
1896
Gorman-Rupp
GRC
$2.16B
| $3.67M | ﹤0.01% |
59,094
-348
| -0.6% | -$20.6K |
|
|
ONC
1897
BeOne Medicines Ltd
ONC
$40.6B
| $3.67M | ﹤0.01% |
12,346
+8
| +0.1% | +$2.59K |
|
1898
Bank First Corp
BFC
$1.69B
| $3.66M | ﹤0.01% |
27,126
-20,831
| -43% | -$2.84M |
|
1899
Meridian
MRBK
$231M
| $3.65M | ﹤0.01% |
192,682
+56,828
| +42% | +$1.08M |
|
|
ORKA
1900
Oruka Therapeutics
ORKA
$6.34B
| $3.65M | ﹤0.01% |
74,386
+17,306
| +30% | +$601K |
|
Similar funds
American Century Companies's Q1 2026 Portfolio in Review
As of Q1 2026, American Century Companies held 2,945 positions worth $194B, down 2.4% from $199B the previous quarter. Its ten largest holdings account for 24% of the portfolio.
American Century Companies's Q1 2026 filing shows 133 new, 1,604 increased, 1,039 reduced and 115 closed positions. Its largest new stake was Sunbelt Rentals Holdings: 2,015,224 shares worth $127M. The largest sale was Amazon, an estimated $513M.
By sector, the portfolio is most concentrated in Technology at 25% of assets, down from 27% a quarter earlier, followed by Financials and Consumer Discretionary.
- American Century Companies's largest Q1 2026 buy was Sunbelt Rentals Holdings: 2,015,224 shares worth $127M.
- American Century Companies added most to Microsoft in Q1 2026, an estimated $430M increase.
- American Century Companies's biggest Q1 2026 reduction was Amazon, cutting an estimated $513M.
- American Century Companies fully exited Icon in Q1 2026, selling an estimated $189M.
- American Century Companies's ten largest holdings make up 24% of its $194B portfolio in Q1 2026.
- American Century Companies opened 133 new positions and closed 115 in Q1 2026.
- American Century Companies's portfolio value fell 2.4% quarter-over-quarter to $194B.
Based on American Century Companies's 13F filing for Q1 2026, filed 15 May 2026.