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 | |
|---|---|---|---|---|---|---|
76
Mondelez International
MDLZ
$79.9B
| $340M | 0.17% |
5,891,070
-532,951
| -8% | -$30.9M |
|
77
Idexx Laboratories
IDXX
$46.2B
| $337M | 0.17% |
599,931
-29,003
| -5% | -$18.6M |
|
78
Zscaler
ZS
$27.3B
| $335M | 0.17% |
2,384,425
-17,347
| -0.7% | -$3.08M |
|
79
Insulet
PODD
$9.79B
| $334M | 0.17% |
1,591,410
+6,986
| +0.4% | +$1.76M |
|
80
Magnolia Oil & Gas
MGY
$5.94B
| $332M | 0.17% |
10,509,240
-520,607
| -5% | -$13.9M |
|
81
Diamondback Energy
FANG
$52.7B
| $331M | 0.17% |
1,672,265
+156,994
| +10% | +$26.7M |
|
82
Royal Caribbean
RCL
$85.6B
| $327M | 0.17% |
1,189,823
-68,935
| -5% | -$20.5M |
|
83
Lowe's Companies
LOW
$125B
| $326M | 0.17% |
1,378,890
-56,616
| -4% | -$14.8M |
|
84
Ascendis Pharma A/S
ASND
$16.8B
| $320M | 0.16% |
1,397,119
-46,022
| -3% | -$10.3M |
|
85
Plexus
PLXS
$7.23B
| $316M | 0.16% |
1,562,431
+1,809
| +0.1% | +$344K |
|
86
Ecolab
ECL
$79.9B
| $315M | 0.16% |
1,182,558
-184,994
| -14% | -$52.2M |
|
87
Allstate
ALL
$67.5B
| $312M | 0.16% |
1,504,460
+233,491
| +18% | +$47.9M |
|
88
Wabtec
WAB
$49.3B
| $306M | 0.16% |
1,225,538
+67,738
| +6% | +$16.4M |
|
89
Commerce Bancshares
CBSH
$8.5B
| $306M | 0.16% |
6,223,791
+1,486,907
| +31% | +$77.2M |
|
90
Targa Resources
TRGP
$55.1B
| $302M | 0.16% |
1,205,349
+31,882
| +3% | +$6.91M |
|
91
Progressive
PGR
$125B
| $298M | 0.15% |
1,505,424
+62,844
| +4% | +$13M |
|
92
Spotify
SPOT
$100B
| $298M | 0.15% |
614,274
+66,815
| +12% | +$33.5M |
|
93
Stryker
SYK
$130B
| $297M | 0.15% |
903,681
-110,545
| -11% | -$39.7M |
|
94
Target
TGT
$68B
| $296M | 0.15% |
2,446,213
+987,585
| +68% | +$111M |
|
95
ONE Gas
OGS
$5.04B
| $291M | 0.15% |
3,375,393
-127,375
| -4% | -$10.6M |
|
96
Blackrock
BLK
$176B
| $287M | 0.15% |
298,551
+20,905
| +8% | +$22M |
|
97
Union Pacific
UNP
$174B
| $286M | 0.15% |
1,177,750
+92,713
| +9% | +$22.7M |
|
98
GE Aerospace
GE
$384B
| $285M | 0.15% |
1,003,831
+68,493
| +7% | +$21.5M |
|
99
Johnson Controls International
JCI
$92.2B
| $284M | 0.15% |
2,169,155
-463,342
| -18% | -$59.8M |
|
100
ConocoPhillips
COP
$141B
| $283M | 0.15% |
2,147,652
-972,594
| -31% | -$108M |
|
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.