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 | |
|---|---|---|---|---|---|---|
1851
Humana
HUM
$46.3B
| $4.15M | ﹤0.01% |
23,930
+1,777
| +8% | +$364K |
|
1852
Stoneridge
SRI
$203M
| $4.15M | ﹤0.01% |
858,465
+84,187
| +11% | +$577K |
|
1853
Pool Corp
POOL
$7.27B
| $4.14M | ﹤0.01% |
20,441
-276,443
| -93% | -$65.2M |
|
1854
Veeco
VECO
$3.02B
| $4.1M | ﹤0.01% |
121,131
-583,126
| -83% | -$18.6M |
|
1855
Agios Pharmaceuticals
AGIO
$1.95B
| $4.07M | ﹤0.01% |
120,253
-31,233
| -21% | -$886K |
|
1856
Enpro
NPO
$7.04B
| $4.06M | ﹤0.01% |
16,179
+2,976
| +23% | +$745K |
|
1857
Avery Dennison
AVY
$13.5B
| $4.03M | ﹤0.01% |
23,360
+1,142
| +5% | +$210K |
|
1858
First Interstate BancSystem
FIBK
$3.56B
| $4.03M | ﹤0.01% |
120,760
+42,578
| +54% | +$1.52M |
|
1859
Innospec
IOSP
$2.29B
| $4.03M | ﹤0.01% |
55,234
+918
| +2% | +$71.5K |
|
1860
Western Union
WU
$2.19B
| $4.03M | ﹤0.01% |
461,881
+105,036
| +29% | +$994K |
|
1861
Advanced Energy
AEIS
$12.6B
| $4.03M | ﹤0.01% |
12,478
+3,633
| +41% | +$1.05M |
|
1862
Beam Therapeutics
BEAM
$2.82B
| $4.02M | ﹤0.01% |
168,673
+20,370
| +14% | +$565K |
|
|
GLIBA
1863
Liberty Capital Corp Series A GCI Group Common Stock
GLIBA
$1.01B
| $4.01M | ﹤0.01% |
108,879
+58,634
| +117% | +$2.22M |
|
1864
Digi International
DGII
$3.14B
| $4M | ﹤0.01% |
83,071
+556
| +0.7% | +$26K |
|
1865
UFP Industries
UFPI
$5.01B
| $3.99M | ﹤0.01% |
43,276
-947
| -2% | -$95.7K |
|
1866
nVent Electric
NVT
$26.3B
| $3.99M | ﹤0.01% |
33,695
-73
| -0.2% | -$8.29K |
|
|
HOLX
1867
DELISTED
Hologic
HOLX
| $3.98M | ﹤0.01% |
52,652
-825,391
| -94% | -$62.1M |
|
1868
Mayville Engineering Co
MEC
$584M
| $3.98M | ﹤0.01% |
221,673
-59,167
| -21% | -$1.14M |
|
1869
iQIYI
IQ
$1.31B
| $3.98M | ﹤0.01% |
2,946,253
-214,114
| -7% | -$369K |
|
|
THR
1870
DELISTED
Thermon Group Holdings
THR
| $3.97M | ﹤0.01% |
78,863
+2,640
| +3% | +$123K |
|
1871
Kura Oncology
KURA
$874M
| $3.96M | ﹤0.01% |
486,570
-630,472
| -56% | -$5.42M |
|
1872
Stewart Information Services
STC
$2.01B
| $3.94M | ﹤0.01% |
64,046
+812
| +1% | +$54.1K |
|
1873
LiveRamp
RAMP
$2.3B
| $3.94M | ﹤0.01% |
148,526
+6,868
| +5% | +$180K |
|
1874
Darling Ingredients
DAR
$9.91B
| $3.93M | ﹤0.01% |
63,600
+5,205
| +9% | +$256K |
|
1875
BCE
BCE
$21B
| $3.91M | ﹤0.01% |
155,150
-88,729
| -36% | -$2.25M |
|
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.