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 | |
|---|---|---|---|---|---|---|
1676
Lexeo Therapeutics
LXEO
$397M
| $37.5M | 0.01% |
3,774,317
+55,274
| +1% | +$504K |
|
|
BNY
1677
Bank of New York Mellon
BNY
$111B
| $37.4M | 0.01% |
322,274
+174,143
| +118% | +$19.3M |
|
1678
Immunome
IMNM
$3.09B
| $37.4M | 0.01% |
1,740,705
+899,567
| +107% | +$15.8M |
|
1679
Sensata Technologies
ST
$6.73B
| $37.4M | 0.01% |
1,122,217
+371,958
| +50% | +$11.9M |
|
1680
Gentex
GNTX
$5.03B
| $37.3M | 0.01% |
1,604,165
+743,789
| +86% | +$17.9M |
|
1681
PUT
Crocs
CROX
$6.32B
| $37.3M | 0.01% |
436,200
-264,600
| -38% | -$22.1M |
|
1682
PUT
Kratos Defense & Security Solutions
KTOS
$12.1B
| $37.3M | 0.01% |
491,000
-540,900
| -52% | -$44.3M |
|
1683
CALL
VanEck Junior Gold Miners ETF
GDXJ
$8.49B
| $37.2M | 0.01% |
327,100
-575,400
| -64% | -$59.5M |
|
1684
Labcorp
LH
$25.8B
| $37.2M | 0.01% |
148,296
-368,258
| -71% | -$97.8M |
|
1685
CALL
Cardinal Health
CAH
$54.7B
| $37.2M | 0.01% |
181,000
-137,400
| -43% | -$25.9M |
|
1686
Fortune Brands Innovations
FBIN
$5.71B
| $37.2M | 0.01% |
743,294
+493,790
| +198% | +$24.8M |
|
1687
Western Alliance Bancorporation
WAL
$8.98B
| $37.1M | 0.01% |
441,890
-304,381
| -41% | -$24.7M |
|
1688
PUT
F5
FFIV
$22.8B
| $37.1M | 0.01% |
145,500
+89,300
| +159% | +$24M |
|
1689
CALL
Teck Resources
TECK
$31.2B
| $37.1M | 0.01% |
774,500
-313,500
| -29% | -$13.6M |
|
1690
Oscar Health
OSCR
$10.1B
| $37M | 0.01% |
2,578,023
-1,709,185
| -40% | -$29.6M |
|
1691
CALL
Waste Management
WM
$89.8B
| $37M | 0.01% |
168,200
-36,900
| -18% | -$7.86M |
|
1692
CALL
Marathon Petroleum
MPC
$99.8B
| $36.9M | 0.01% |
227,200
-144,500
| -39% | -$27M |
|
1693
CALL
MGM Resorts International
MGM
$11.1B
| $36.9M | 0.01% |
1,011,300
-139,900
| -12% | -$4.75M |
|
1694
CALL
Gartner
IT
$11.4B
| $36.9M | 0.01% |
146,200
+68,700
| +89% | +$16.5M |
|
1695
CALL
Plains All American Pipeline
PAA
$16.9B
| $36.9M | 0.01% |
2,052,300
+561,000
| +38% | +$9.53M |
|
1696
L3Harris
LHX
$54.3B
| $36.8M | 0.01% |
125,453
+55,507
| +79% | +$16M |
|
1697
Reliance Steel & Aluminium
RS
$21.8B
| $36.8M | 0.01% |
127,494
+113,093
| +785% | +$31.8M |
|
1698
Amkor Technology
AMKR
$14.7B
| $36.8M | 0.01% |
932,711
+594,740
| +176% | +$21.2M |
|
1699
PUT
Veeva Systems
VEEV
$39.6B
| $36.8M | 0.01% |
164,800
+41,700
| +34% | +$11.1M |
|
1700
CALL
SiriusXM
SIRI
$9.59B
| $36.7M | 0.01% |
1,836,883
+449,824
| +32% | +$9.67M |
|
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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.