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 | |
|---|---|---|---|---|---|---|
776
CALL
Vertex Pharmaceuticals
VRTX
$131B
| $113M | 0.02% |
248,400
-27,000
| -10% | -$11.6M |
|
777
CALL
Live Nation Entertainment
LYV
$43.3B
| $112M | 0.02% |
787,900
+119,200
| +18% | +$17.1M |
|
778
PUT
Applied Digital
APLD
$8.81B
| $112M | 0.02% |
4,571,800
-143,600
| -3% | -$4.14M |
|
|
MRP
779
Millrose Properties Inc
MRP
$5.02B
| $112M | 0.02% |
3,752,909
+3,206,342
| +587% | +$101M |
|
780
CALL
Roku
ROKU
$22.9B
| $112M | 0.02% |
1,033,200
+132,800
| +15% | +$13.5M |
|
781
Regeneron Pharmaceuticals
REGN
$83B
| $112M | 0.02% |
144,970
-85,257
| -37% | -$57.9M |
|
782
CALL
CAVA Group
CAVA
$8.43B
| $112M | 0.02% |
1,905,900
-193,100
| -9% | -$10.8M |
|
783
F5
FFIV
$23.6B
| $111M | 0.02% |
436,568
+384,470
| +738% | +$103M |
|
784
PUT
Colgate-Palmolive
CL
$74.1B
| $111M | 0.02% |
1,409,500
+644,900
| +84% | +$50.6M |
|
785
Genuine Parts
GPC
$18.7B
| $111M | 0.02% |
904,495
+192,026
| +27% | +$24.9M |
|
786
PUT
GameStop
GME
$8.33B
| $111M | 0.02% |
5,526,000
+1,712,000
| +45% | +$38.4M |
|
787
Ascendis Pharma A/S
ASND
$16.2B
| $111M | 0.02% |
519,516
+491,876
| +1,780% | +$102M |
|
788
CALL
Southwest Airlines
LUV
$22B
| $110M | 0.02% |
2,672,500
+225,600
| +9% | +$7.88M |
|
789
CALL
Riot Platforms
RIOT
$7.21B
| $110M | 0.02% |
8,681,000
-2,610,000
| -23% | -$44.6M |
|
790
CALL
Illumina
ILMN
$29.1B
| $110M | 0.02% |
838,300
-637,300
| -43% | -$74.8M |
|
791
Indivior Pharmaceuticals
INDV
$4.51B
| $110M | 0.02% |
3,061,902
+441,579
| +17% | +$13.5M |
|
792
Sea Limited
SE
$75.5B
| $110M | 0.02% |
859,075
+255,348
| +42% | +$37.8M |
|
|
BMNR
793
CALL
BitMine Immersion Technologies
BMNR
$11B
| $110M | 0.02% |
4,034,300
-2,081,700
| -34% | -$84.4M |
|
794
CALL
Duolingo
DUOL
$6.74B
| $109M | 0.02% |
623,100
+100,700
| +19% | +$23.7M |
|
|
CRCL
795
Circle Internet Group
CRCL
$19.1B
| $109M | 0.02% |
1,375,285
+1,337,183
| +3,509% | +$138M |
|
796
Commault Systems
CVLT
$6.26B
| $109M | 0.02% |
869,102
+462,995
| +114% | +$65.1M |
|
|
AXON
797
PUT
Axon Enterprise
AXON
$50B
| $109M | 0.02% |
191,800
+34,200
| +22% | +$21.2M |
|
798
Mondelez International
MDLZ
$81.1B
| $109M | 0.02% |
2,022,704
+503,898
| +33% | +$29M |
|
799
PUT
SLB Ltd
SLB
$77.3B
| $109M | 0.02% |
2,836,247
+1,329
| +0% | +$48.2K |
|
800
Copart
CPRT
$27.2B
| $109M | 0.02% |
2,777,753
+754,559
| +37% | +$31.3M |
|
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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.