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 | |
|---|---|---|---|---|---|---|
2176
PUT
TKO Group
TKO
$14.7B
| $22.7M | ﹤0.01% |
108,500
+25,200
| +30% | +$4.9M |
|
2177
Vista Energy
VIST
$7.57B
| $22.7M | ﹤0.01% |
465,992
+304,087
| +188% | +$13.7M |
|
2178
Invesco
IVZ
$14.4B
| $22.7M | ﹤0.01% |
862,310
-4,119,003
| -83% | -$101M |
|
2179
CALL
NexGen Energy
NXE
$6.97B
| $22.6M | ﹤0.01% |
2,460,900
+543,900
| +28% | +$4.8M |
|
2180
CALL
Williams-Sonoma
WSM
$28.4B
| $22.6M | ﹤0.01% |
126,700
-31,700
| -20% | -$5.94M |
|
2181
PUT
Alamos Gold
AGI
$14B
| $22.6M | ﹤0.01% |
585,500
-287,300
| -33% | -$10M |
|
2182
CALL
Toll Brothers
TOL
$13.9B
| $22.6M | ﹤0.01% |
166,900
-59,600
| -26% | -$8.09M |
|
2183
Curtiss-Wright
CW
$25.8B
| $22.5M | ﹤0.01% |
+40,900
| New | +$22.8M |
|
2184
PUT
Cytokinetics
CYTK
$10.3B
| $22.5M | ﹤0.01% |
354,400
+34,400
| +11% | +$2.14M |
|
2185
Supernus Pharmaceuticals
SUPN
$2.81B
| $22.5M | ﹤0.01% |
452,959
-963,967
| -68% | -$46.9M |
|
2186
CALL
Targa Resources
TRGP
$59.1B
| $22.5M | ﹤0.01% |
122,000
-56,200
| -32% | -$9.47M |
|
2187
CALL
Ameriprise Financial
AMP
$50.3B
| $22.5M | ﹤0.01% |
45,900
+13,100
| +40% | +$6.22M |
|
2188
PUT
Tapestry
TPR
$26.1B
| $22.5M | ﹤0.01% |
176,100
-17,400
| -9% | -$1.99M |
|
2189
CALL
Jefferies Financial Group
JEF
$12.7B
| $22.5M | ﹤0.01% |
362,500
+155,400
| +75% | +$8.91M |
|
2190
Sharplink Inc
SBET
$1.36B
| $22.4M | ﹤0.01% |
2,510,283
-1,110,130
| -31% | -$13.6M |
|
2191
Globant
GLOB
$1.61B
| $22.4M | ﹤0.01% |
343,295
-50,676
| -13% | -$3.19M |
|
2192
PUT
Quantum Computing Inc
QUBT
$2.04B
| $22.4M | ﹤0.01% |
2,187,100
+481,600
| +28% | +$6.85M |
|
2193
CALL
Royal Bank of Canada
RY
$301B
| $22.4M | ﹤0.01% |
131,600
+26,300
| +25% | +$4.04M |
|
2194
The GEO Group
GEO
$4.11B
| $22.4M | ﹤0.01% |
1,390,740
-122,188
| -8% | -$2.04M |
|
2195
PUT
Argan
AGX
$8.11B
| $22.4M | ﹤0.01% |
71,500
+1,700
| +2% | +$540K |
|
2196
Gerdau
GGB
$9.3B
| $22.4M | ﹤0.01% |
6,067,900
+4,059,885
| +202% | +$14.2M |
|
2197
CALL
Fluence Energy
FLNC
$2.43B
| $22.4M | ﹤0.01% |
1,131,400
+136,500
| +14% | +$2.57M |
|
2198
PUT
argenx
ARGX
$53.3B
| $22.4M | ﹤0.01% |
26,600
-5,900
| -18% | -$5.05M |
|
2199
PUT
Agilent Technologies
A
$41.9B
| $22.3M | ﹤0.01% |
164,200
+42,800
| +35% | +$6.15M |
|
2200
KB Home
KBH
$3.44B
| $22.3M | ﹤0.01% |
395,732
-895,278
| -69% | -$55.1M |
|
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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.