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 | |
|---|---|---|---|---|---|---|
2801
Sweetgreen
SG
$642M
| $57K | ﹤0.01% |
+10,974
| New | +$66.7K |
|
2802
OmniAb
OABI
$447M
| $54.7K | ﹤0.01% |
+34,816
| New | +$62.8K |
|
2803
Prairie Operating Co
PROP
$78.1M
| $53.7K | ﹤0.01% |
26,429
+7,877
| +42% | +$14.2K |
|
2804
PetMed Express
PETS
$42.3M
| $51.8K | ﹤0.01% |
22,703
-37,203
| -62% | -$108K |
|
|
TMQ
2805
Trilogy Metals
TMQ
$656M
| $48.8K | ﹤0.01% |
13,546
+3,252
| +32% | +$14.8K |
|
2806
Cineverse
CNVS
$65.6M
| $47.4K | ﹤0.01% |
19,735
-4,961
| -20% | -$12K |
|
2807
XBiotech
XBIT
$69.2M
| $44.4K | ﹤0.01% |
18,881
| – | – |
|
2808
Acumen Pharmaceuticals
ABOS
$176M
| $42.3K | ﹤0.01% |
+17,929
| New | +$45.7K |
|
|
YRD
2809
Yiren Digital
YRD
$110M
| $41.4K | ﹤0.01% |
24,096
| – | – |
|
2810
Rapid Micro Biosystems
RPID
$86.2M
| $38.4K | ﹤0.01% |
16,922
| – | – |
|
2811
Prelude Therapeutics
PRLD
$390M
| $35.2K | ﹤0.01% |
+10,294
| New | +$27K |
|
2812
Definitive Healthcare
DH
$75.3M
| $33.1K | ﹤0.01% |
26,904
-256
| -0.9% | -$445 |
|
2813
Outdoor Holding Co
POWW
$247M
| $32K | ﹤0.01% |
+15,931
| New | +$30.3K |
|
2814
Microbot Medical
MBOT
$127M
| $29.9K | ﹤0.01% |
+12,418
| New | +$27.7K |
|
2815
Pacific Biosciences
PACB
$370M
| $29.8K | ﹤0.01% |
22,602
-71,461
| -76% | -$128K |
|
2816
Zevia
ZVIA
$111M
| $27.6K | ﹤0.01% |
23,631
| – | – |
|
|
GENVR
2817
Gen Digital Inc Contingent Value Rights
GENVR
| $26.5K | ﹤0.01% |
54,904
| – | – |
|
2818
Siebert Financial
SIEB
$68.4M
| $25.1K | ﹤0.01% |
13,088
-10,376
| -44% | -$26K |
|
2819
loanDepot
LDI
$516M
| $24.4K | ﹤0.01% |
+17,173
| New | +$35.3K |
|
|
OLPX
2820
DELISTED
Olaplex Holdings
OLPX
| $20.3K | ﹤0.01% |
+10,016
| New | +$15.4K |
|
|
GLDG
2821
GoldMining Inc
GLDG
$219M
| $20K | ﹤0.01% |
16,777
+6,320
| +60% | +$9.48K |
|
|
NNDM
2822
Nano Dimension
NNDM
$343M
| $18.6K | ﹤0.01% |
10,929
+196
| +2% | +$357 |
|
|
GOCO
2823
DELISTED
GoHealth
GOCO
| $17.1K | ﹤0.01% |
11,308
| – | – |
|
|
ACLX
2824
DELISTED
Arcellx
ACLX
| – | – |
-419,080
| Closed | -$27.3M |
|
2825
Aldeyra Therapeutics
ALDX
$93.5M
| – | – |
-32,460
| Closed | -$168K |
|
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.