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 | |
|---|---|---|---|---|---|---|
2626
Canadian Solar
CSIQ
$1.08B
| $310K | ﹤0.01% |
22,381
+1,090
| +5% | +$20.7K |
|
2627
Shattuck Labs
STTK
$694M
| $309K | ﹤0.01% |
48,127
+30,845
| +178% | +$146K |
|
2628
AtriCure
ATRC
$2.11B
| $304K | ﹤0.01% |
10,640
-70,972
| -87% | -$2.42M |
|
|
SARO
2629
StandardAero Inc
SARO
$9.7B
| $303K | ﹤0.01% |
+11,736
| New | +$350K |
|
|
ASIC
2630
Ategrity Specialty Insurance
ASIC
$1.19B
| $302K | ﹤0.01% |
+15,264
| New | +$296K |
|
2631
Liberty Live Group Series C
LLYVK
$9.46B
| $301K | ﹤0.01% |
3,196
-9,860
| -76% | -$887K |
|
|
FBLA
2632
FB Bancorp
FBLA
$251M
| $298K | ﹤0.01% |
21,655
+9,395
| +77% | +$124K |
|
|
CSW
2633
CSW Industrials
CSW
$5.71B
| $295K | ﹤0.01% |
+1,133
| New | +$329K |
|
|
AIOT
2634
PowerFleet Inc
AIOT
$592M
| $294K | ﹤0.01% |
95,565
+49,475
| +107% | +$207K |
|
2635
Eton Pharmaceutcials
ETON
$1.22B
| $294K | ﹤0.01% |
+11,926
| New | +$209K |
|
|
OPENW
2636
Opendoor Technologies Inc Series K Warrants
OPENW
$7.45M
| $293K | ﹤0.01% |
482,614
-233
| -0% | -$209 |
|
2637
Cabaletta Bio
CABA
$455M
| $291K | ﹤0.01% |
108,319
+49,542
| +84% | +$138K |
|
2638
Melco Resorts & Entertainment
MLCO
$2.14B
| $291K | ﹤0.01% |
51,169
| – | – |
|
|
SLSR
2639
Solaris Resources
SLSR
$1.34B
| $288K | ﹤0.01% |
+33,400
| New | +$308K |
|
|
SFD
2640
Smithfield Foods
SFD
$9.99B
| $288K | ﹤0.01% |
+10,303
| New | +$248K |
|
|
MAZE
2641
Maze Therapeutics
MAZE
$1.59B
| $288K | ﹤0.01% |
9,635
-11,874
| -55% | -$524K |
|
2642
Twin Disc
TWIN
$348M
| $287K | ﹤0.01% |
19,032
-523
| -3% | -$8.84K |
|
2643
Ramaco Resources Class A
METC
$649M
| $281K | ﹤0.01% |
18,183
-61,868
| -77% | -$1.1M |
|
|
NXDR
2644
Nextdoor Holdings
NXDR
$986M
| $281K | ﹤0.01% |
200,778
+38,062
| +23% | +$66.1K |
|
|
AEBI
2645
Aebi Schmidt Holding AG
AEBI
$1.02B
| $281K | ﹤0.01% |
28,905
+992
| +4% | +$13.6K |
|
2646
James Hardie Industries
JHX
$17.5B
| $274K | ﹤0.01% |
14,463
-3,081
| -18% | -$69.3K |
|
2647
Kosmos Energy
KOS
$1.48B
| $273K | ﹤0.01% |
98,202
-11,202,509
| -99% | -$21.1M |
|
2648
Lufax Holding
LU
$1.3B
| $273K | ﹤0.01% |
145,902
-4,818
| -3% | -$12.2K |
|
2649
Alto Ingredients
ALTO
$340M
| $270K | ﹤0.01% |
+55,810
| New | +$177K |
|
2650
J.M. Smucker
SJM
$12.8B
| $270K | ﹤0.01% |
2,796
-60,399
| -96% | -$6.32M |
|
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.