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 | |
|---|---|---|---|---|---|---|
|
CAI
2651
Caris Life Sciences
CAI
$6.43B
| $267K | ﹤0.01% |
+14,940
| New | +$327K |
|
2652
Immunome
IMNM
$2.83B
| $266K | ﹤0.01% |
12,149
-85,987
| -88% | -$1.91M |
|
|
MBX
2653
MBX Biosciences
MBX
$3.27B
| $260K | ﹤0.01% |
8,726
-3,510
| -29% | -$119K |
|
2654
eHealth
EHTH
$43.9M
| $259K | ﹤0.01% |
200,428
+70,050
| +54% | +$162K |
|
2655
Alta Equipment Group
ALTG
$245M
| $258K | ﹤0.01% |
48,051
-55,380
| -54% | -$352K |
|
2656
Hooker Furnishings Corp
HOFT
$166M
| $257K | ﹤0.01% |
19,965
-48
| -0.2% | -$631 |
|
2657
Ryan Specialty Holdings
RYAN
$11B
| $255K | ﹤0.01% |
7,570
+106
| +1% | +$4.53K |
|
2658
Anterix
ATEX
$1.94B
| $254K | ﹤0.01% |
+6,661
| New | +$211K |
|
2659
Assembly Biosciences
ASMB
$529M
| $254K | ﹤0.01% |
+9,154
| New | +$261K |
|
2660
Ambarella
AMBA
$3.81B
| $250K | ﹤0.01% |
4,857
+240
| +5% | +$15K |
|
2661
Thryv Holdings
THRY
$108M
| $249K | ﹤0.01% |
90,931
-5,661
| -6% | -$22.2K |
|
2662
Harrow
HROW
$1.51B
| $249K | ﹤0.01% |
7,060
-19,941
| -74% | -$877K |
|
2663
Rubrik
RBRK
$18.5B
| $244K | ﹤0.01% |
+4,990
| New | +$286K |
|
2664
Xometry
XMTR
$5.34B
| $240K | ﹤0.01% |
+5,883
| New | +$313K |
|
|
BBNX
2665
Beta Bionics
BBNX
$715M
| $240K | ﹤0.01% |
23,904
+11,880
| +99% | +$176K |
|
2666
Lifeway Foods
LWAY
$481M
| $239K | ﹤0.01% |
12,338
-2,543
| -17% | -$54.1K |
|
2667
Finward Bancorp
FNWD
$193M
| $237K | ﹤0.01% |
6,517
+111
| +2% | +$4.07K |
|
|
ZH
2668
Zhihu
ZH
$279M
| $236K | ﹤0.01% |
83,097
+580
| +0.7% | +$1.96K |
|
2669
Euroseas
ESEA
$531M
| $235K | ﹤0.01% |
+3,516
| New | +$211K |
|
2670
Digital Turbine
APPS
$1.74B
| $235K | ﹤0.01% |
81,539
+53,714
| +193% | +$231K |
|
2671
Information Services Group
III
$251M
| $234K | ﹤0.01% |
61,014
| – | – |
|
2672
Village Farms International
VFF
$253M
| $234K | ﹤0.01% |
82,439
+67,543
| +453% | +$219K |
|
2673
3D Systems Corp
DDD
$613M
| $231K | ﹤0.01% |
122,839
+68,618
| +127% | +$152K |
|
|
LGN
2674
Legence Corp
LGN
$4.95B
| $231K | ﹤0.01% |
+4,083
| New | +$206K |
|
2675
1-800-Flowers.com
FLWS
$258M
| $231K | ﹤0.01% |
75,823
-406
| -0.5% | -$1.52K |
|
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.