Ken Griffin Citadel Advisors
Ken Griffin founded Citadel, one of the world’s largest and most successful hedge funds. Starting his trading career from his Harvard dorm room at a young age, Griffin quickly developed a keen sense for markets and built Citadel into a global powerhouse with billions in assets under management. Known for his quantitative and technology-driven strategies, Griffin has also made headlines for significant philanthropic contributions, supporting causes in education, the arts, and public institutions. Over the years, he has earned recognition as one of the preeminent figures in modern finance.
Top Buys
| Rank | Stock | Value |
|---|---|---|
| 1 |
Amazon
AMZN
|
+$2.49B |
| 2 |
NVIDIA
NVDA
|
+$2.19B |
| 3 |
State Street SPDR Dow Jones Industrial Average ETF Trust
DIA
|
+$1.94B |
| 4 |
TSMC
TSM
|
+$728M |
| 5 |
UnitedHealth
UNH
|
+$705M |
Top Sells
| Rank | Stock | Value |
|---|---|---|
| 1 |
Meta Platforms (Facebook)
META
|
+$775M |
| 2 |
AbbVie
ABBV
|
+$540M |
| 3 |
Delta Air Lines
DAL
|
+$434M |
| 4 |
Eli Lilly
LLY
|
+$433M |
| 5 |
DexCom
DXCM
|
+$433M |
Sector Composition
| Rank | Sector | Weight |
|---|---|---|
| 1 | Technology | 4.89% |
| 2 | Healthcare | 2.92% |
| 3 | Financials | 2.71% |
| 4 | Consumer Discretionary | 2.52% |
| 5 | Industrials | 2.2% |
| Name | Market Value | Portfolio Weight | Shares or Principal |
Change in Stake | Capital Flow | |
|---|---|---|---|---|---|---|
2401
Oshkosh
OSK
$9.44B
| $18.8M | ﹤0.01% |
149,791
+8,907
| +6% | +$1.15M |
|
2402
CALL
Tractor Supply
TSCO
$18.7B
| $18.8M | ﹤0.01% |
376,100
+1,900
| +0.5% | +$102K |
|
2403
Conagra Brands
CAG
$7.5B
| $18.8M | ﹤0.01% |
1,085,903
-2,515,780
| -70% | -$44.7M |
|
2404
Euronet Worldwide
EEFT
$2.74B
| $18.8M | ﹤0.01% |
246,531
+69,710
| +39% | +$5.43M |
|
|
AUGO
2405
Aura Minerals Inc
AUGO
$6.37B
| $18.7M | ﹤0.01% |
371,779
+354,126
| +2,006% | +$13.9M |
|
2406
CALL
ProShares Bitcoin Strategy ETF
BITO
$1.42B
| $18.7M | ﹤0.01% |
1,539,200
+241,900
| +19% | +$3.79M |
|
|
EA
2407
PUT
DELISTED
Electronic Arts
EA
| $18.7M | ﹤0.01% |
91,600
-149,000
| -62% | -$30.1M |
|
2408
PENN Entertainment
PENN
$2.52B
| $18.7M | ﹤0.01% |
1,268,642
+1,039,541
| +454% | +$16.2M |
|
2409
PUT
Markel Group
MKL
$22.9B
| $18.7M | ﹤0.01% |
8,700
-4,400
| -34% | -$8.91M |
|
2410
PUT
Logitech
LOGI
$14.8B
| $18.7M | ﹤0.01% |
186,600
-75,500
| -29% | -$8.49M |
|
|
JOYY
2411
JOYY Inc
JOYY
$3.68B
| $18.7M | ﹤0.01% |
288,703
+132,560
| +85% | +$8.1M |
|
|
TTAN
2412
CALL
ServiceTitan Inc
TTAN
$8.62B
| $18.7M | ﹤0.01% |
175,500
-14,600
| -8% | -$1.43M |
|
2413
Insperity
NSP
$1.99B
| $18.7M | ﹤0.01% |
482,145
+363,263
| +306% | +$14.5M |
|
2414
EPAM Systems
EPAM
$5.18B
| $18.7M | ﹤0.01% |
91,086
-1,286,924
| -93% | -$229M |
|
2415
CALL
Keurig Dr Pepper
KDP
$42.8B
| $18.7M | ﹤0.01% |
665,900
+130,000
| +24% | +$3.57M |
|
2416
CALL
MasTec
MTZ
$23.9B
| $18.6M | ﹤0.01% |
85,700
+12,500
| +17% | +$2.62M |
|
2417
O-I Glass
OI
$1.04B
| $18.6M | ﹤0.01% |
1,261,502
+1,042,874
| +477% | +$13.8M |
|
2418
Aptiv
APTV
$10.3B
| $18.6M | ﹤0.01% |
244,672
+33,262
| +16% | +$2.67M |
|
2419
Loar Holdings
LOAR
$7.25B
| $18.6M | ﹤0.01% |
273,671
+231,781
| +553% | +$16.9M |
|
2420
Cullen/Frost Bankers
CFR
$10.6B
| $18.6M | ﹤0.01% |
146,842
+69,223
| +89% | +$8.68M |
|
2421
NorthWestern Energy
NWE
$4.42B
| $18.6M | ﹤0.01% |
288,102
+235,613
| +449% | +$14.9M |
|
|
DOO
2422
Bombardier Recreational Products
DOO
$4.73B
| $18.6M | ﹤0.01% |
262,770
+149,181
| +131% | +$10.2M |
|
|
MAZE
2423
Maze Therapeutics
MAZE
$1.51B
| $18.6M | ﹤0.01% |
+448,217
| New | +$15.4M |
|
2424
Viking Holdings
VIK
$43.7B
| $18.6M | ﹤0.01% |
259,886
+253,256
| +3,820% | +$16.2M |
|
2425
PUT
BILL Holdings
BILL
$4.96B
| $18.5M | ﹤0.01% |
340,000
-206,900
| -38% | -$10.6M |
|
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Ken Griffin's Q4 2025 Portfolio in Review
As of Q4 2025, Ken Griffin held 14,701 positions worth $666B, up 1.3% from $657B the previous quarter. Its ten largest holdings account for 23% of the portfolio.
Ken Griffin's Q4 2025 filing shows 2,078 new, 5,000 increased, 5,362 reduced and 2,191 closed positions. Its largest new stake was Medline Inc: 6,006,339 shares worth $252M. The largest sale was Meta Platforms (Facebook), an estimated $775M.
By sector, the portfolio is most concentrated in Technology at 4.9% of assets, up from 3.8% a quarter earlier, followed by Healthcare and Financials.
- Ken Griffin's largest Q4 2025 buy was Medline Inc: 6,006,339 shares worth $252M.
- Ken Griffin added most to Amazon in Q4 2025, an estimated $2.49B increase.
- Ken Griffin's biggest Q4 2025 reduction was Meta Platforms (Facebook), cutting an estimated $775M.
- Ken Griffin fully exited WEX in Q4 2025, selling an estimated $131M.
- Ken Griffin's ten largest holdings make up 23% of its $666B portfolio in Q4 2025.
- Ken Griffin opened 2,078 new positions and closed 2,191 in Q4 2025.
- Ken Griffin's portfolio value rose 1.3% quarter-over-quarter to $666B.
Based on Citadel Advisors's 13F filing for Q4 2025, filed 17 Feb 2026.