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 |
Amphenol
APH
|
+$460M |
| 2 |
Broadcom
AVGO
|
+$298M |
| 3 |
Sysco
SYY
|
+$225M |
| 4 |
MRSH
Marsh
MRSH
|
+$200M |
| 5 |
Ascendis Pharma A/S
ASND
|
+$186M |
Top Sells
| Rank | Stock | Value |
|---|---|---|
| 1 |
NVIDIA
NVDA
|
+$573M |
| 2 |
Visa
V
|
+$465M |
| 3 |
Apple
AAPL
|
+$461M |
| 4 |
Alphabet (Google) Class A
GOOGL
|
+$363M |
| 5 |
Alphabet (Google) Class C
GOOG
|
+$358M |
Sector Composition
| Rank | Sector | Weight |
|---|---|---|
| 1 | Technology | 26.8% |
| 2 | Financials | 13.6% |
| 3 | Consumer Discretionary | 12.52% |
| 4 | Industrials | 10.05% |
| 5 | Healthcare | 9.86% |
| Name | Market Value | Portfolio Weight | Shares or Principal |
Change in Stake | Capital Flow | |
|---|---|---|---|---|---|---|
2451
Consolidated Water Co
CWCO
$502M
| $621K | ﹤0.01% |
17,610
+5,634
| +47% | +$197K |
|
2452
Sky Harbour Group
SKYH
$379M
| $620K | ﹤0.01% |
69,082
+2,853
| +4% | +$27.3K |
|
2453
Ribbon Communications
RBBN
$377M
| $616K | ﹤0.01% |
213,946
+5,844
| +3% | +$18.9K |
|
2454
Erasca
ERAS
$6.25B
| $615K | ﹤0.01% |
165,359
+129,905
| +366% | +$365K |
|
|
ALEX
2455
DELISTED
Alexander & Baldwin
ALEX
| $611K | ﹤0.01% |
29,580
+432
| +1% | +$7.51K |
|
2456
MP Materials
MP
$9.91B
| $609K | ﹤0.01% |
12,054
-19,113
| -61% | -$1.21M |
|
2457
Virtu Financial
VIRT
$5.05B
| $609K | ﹤0.01% |
18,269
+549
| +3% | +$18.8K |
|
2458
Atea Pharmaceuticals
AVIR
$406M
| $608K | ﹤0.01% |
170,326
-11,360
| -6% | -$36.1K |
|
2459
FRP Holdings
FRPH
$425M
| $605K | ﹤0.01% |
26,551
+490
| +2% | +$11.6K |
|
2460
eHealth
EHTH
$38.8M
| $600K | ﹤0.01% |
130,378
+64,593
| +98% | +$285K |
|
2461
Mistras Group
MG
$584M
| $599K | ﹤0.01% |
47,368
-42
| -0.1% | -$474 |
|
2462
El Pollo Loco
LOCO
$471M
| $599K | ﹤0.01% |
57,252
-124
| -0.2% | -$1.28K |
|
2463
Voyager Therapeutics
VYGR
$198M
| $591K | ﹤0.01% |
150,405
+3,948
| +3% | +$17.5K |
|
2464
Etsy
ETSY
$7.4B
| $589K | ﹤0.01% |
10,624
-14,101
| -57% | -$861K |
|
|
EU
2465
enCore Energy
EU
$221M
| $589K | ﹤0.01% |
237,302
+75,706
| +47% | +$216K |
|
|
BCPC
2466
Balchem Corp
BCPC
$5.65B
| $586K | ﹤0.01% |
3,819
| – | – |
|
2467
Thryv Holdings
THRY
$96.9M
| $584K | ﹤0.01% |
96,592
-836,607
| -90% | -$6.62M |
|
2468
Pentair
PNR
$10.7B
| $583K | ﹤0.01% |
5,598
-28,510
| -84% | -$3.04M |
|
2469
8x8 Inc
EGHT
$303M
| $582K | ﹤0.01% |
295,349
-12,719
| -4% | -$25K |
|
2470
Tetra Tech
TTEK
$9.33B
| $580K | ﹤0.01% |
17,297
+5,197
| +43% | +$176K |
|
2471
Riverview Bancorp
RVSB
$107M
| $578K | ﹤0.01% |
115,221
-481
| -0.4% | -$2.52K |
|
2472
Spok Holdings
SPOK
$230M
| $576K | ﹤0.01% |
43,683
+276
| +0.6% | +$3.91K |
|
|
RNAM
2473
DELISTED
Avidity Biosciences
RNAM
| $576K | ﹤0.01% |
+7,985
| New | +$516K |
|
2474
JFrog
FROG
$11.5B
| $575K | ﹤0.01% |
+9,204
| New | +$523K |
|
2475
Groupon
GRPN
$894M
| $574K | ﹤0.01% |
32,581
-33,098
| -50% | -$623K |
|
Similar funds
American Century Companies's Q4 2025 Portfolio in Review
As of Q4 2025, American Century Companies held 2,902 positions worth $199B, up 1.2% from $197B the previous quarter. Its ten largest holdings account for 27% of the portfolio.
American Century Companies's Q4 2025 filing shows 123 new, 1,653 increased, 947 reduced and 91 closed positions. Its largest new stake was Amrize Ltd: 2,173,524 shares worth $118M. The largest sale was NVIDIA, an estimated $573M.
By sector, the portfolio is most concentrated in Technology at 27% of assets, down from 28% a quarter earlier, followed by Financials and Consumer Discretionary.
- American Century Companies's largest Q4 2025 buy was Amrize Ltd: 2,173,524 shares worth $118M.
- American Century Companies added most to Amphenol in Q4 2025, an estimated $460M increase.
- American Century Companies's biggest Q4 2025 reduction was NVIDIA, cutting an estimated $573M.
- American Century Companies fully exited Premier in Q4 2025, selling an estimated $91.5M.
- American Century Companies's ten largest holdings make up 27% of its $199B portfolio in Q4 2025.
- American Century Companies opened 123 new positions and closed 91 in Q4 2025.
- American Century Companies's portfolio value rose 1.2% quarter-over-quarter to $199B.
Based on American Century Companies's 13F filing for Q4 2025, filed 13 Feb 2026.