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 | |
|---|---|---|---|---|---|---|
2376
Solid Biosciences
SLDB
$901M
| $824K | ﹤0.01% |
114,392
+17,070
| +18% | +$110K |
|
2377
Hackett Group
HCKT
$281M
| $815K | ﹤0.01% |
62,671
-522
| -0.8% | -$8.35K |
|
2378
First National Corp
FXNC
$284M
| $815K | ﹤0.01% |
+30,270
| New | +$802K |
|
2379
Concentrix
CNXC
$1.55B
| $811K | ﹤0.01% |
29,652
+5,793
| +24% | +$206K |
|
2380
HEICO Corp Class A
HEI.A
$37.6B
| $810K | ﹤0.01% |
+3,837
| New | +$945K |
|
2381
Madison Square Garden
MSGE
$3.61B
| $807K | ﹤0.01% |
+13,706
| New | +$811K |
|
2382
GFL Environmental
GFL
$14.9B
| $800K | ﹤0.01% |
19,176
-978,888
| -98% | -$41.9M |
|
2383
Omega Flex
OFLX
$312M
| $799K | ﹤0.01% |
25,756
+18,176
| +240% | +$598K |
|
2384
Enlight Renewable Energy
ENLT
$11.4B
| $798K | ﹤0.01% |
+11,695
| New | +$748K |
|
2385
Electromed
ELMD
$352M
| $796K | ﹤0.01% |
34,006
-13,841
| -29% | -$361K |
|
|
GRDN
2386
Guardian Pharmacy Services
GRDN
$2.72B
| $796K | ﹤0.01% |
+21,125
| New | +$690K |
|
2387
Genesco
GCO
$434M
| $789K | ﹤0.01% |
27,214
-490
| -2% | -$14.1K |
|
|
UPB
2388
Upstream Bio Inc
UPB
$399M
| $789K | ﹤0.01% |
87,624
-132
| -0.2% | -$2.38K |
|
2389
Custom Truck One Source
CTOS
$2.4B
| $780K | ﹤0.01% |
118,731
+1,542
| +1% | +$10.1K |
|
2390
Sprinklr
CXM
$1.62B
| $780K | ﹤0.01% |
129,956
-1,764
| -1% | -$10.9K |
|
2391
Gogo Inc
GOGO
$465M
| $779K | ﹤0.01% |
193,667
-1,588
| -0.8% | -$7.23K |
|
2392
Gen Digital
GEN
$17.6B
| $778K | ﹤0.01% |
41,320
+26
| +0.1% | +$602 |
|
2393
QuinStreet
QNST
$1.2B
| $776K | ﹤0.01% |
64,631
+42,740
| +195% | +$542K |
|
2394
Prothena Corp
PRTA
$439M
| $774K | ﹤0.01% |
79,631
+827
| +1% | +$7.58K |
|
2395
Aecom
ACM
$9.84B
| $770K | ﹤0.01% |
9,083
-468
| -5% | -$44.4K |
|
2396
Post Holdings
POST
$3.47B
| $768K | ﹤0.01% |
+7,771
| New | +$792K |
|
2397
Futu Holdings
FUTU
$15.4B
| $768K | ﹤0.01% |
5,616
-2,632
| -32% | -$409K |
|
2398
Utz Brands
UTZ
$1.25B
| $767K | ﹤0.01% |
96,868
-10,579
| -10% | -$98.3K |
|
2399
Artesian Resources
ARTNA
$351M
| $766K | ﹤0.01% |
24,043
-114
| -0.5% | -$3.74K |
|
2400
Zeta Global
ZETA
$6.88B
| $765K | ﹤0.01% |
48,061
+24,507
| +104% | +$454K |
|
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.