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 | |
|---|---|---|---|---|---|---|
1876
PUT
QuantumScape Corp
QS
$3.81B
| $30.3M | ﹤0.01% |
2,904,700
-488,300
| -14% | -$6.73M |
|
1877
CALL
Cognizant
CTSH
$26.5B
| $30.2M | ﹤0.01% |
363,900
+131,400
| +57% | +$9.83M |
|
|
P
1878
CALL
Everpure Inc
P
$39.3B
| $30.2M | ﹤0.01% |
450,000
-5,600
| -1% | -$468K |
|
1879
Realty Income
O
$59.4B
| $30.1M | ﹤0.01% |
534,833
-46,319
| -8% | -$2.68M |
|
1880
TG Therapeutics
TGTX
$7.46B
| $30.1M | ﹤0.01% |
1,011,037
+18,334
| +2% | +$599K |
|
1881
ICU Medical
ICUI
$4.58B
| $30.1M | ﹤0.01% |
+210,899
| New | +$28.3M |
|
1882
Owens Corning
OC
$12.2B
| $30.1M | ﹤0.01% |
268,723
+237,393
| +758% | +$27.9M |
|
1883
Ocular Therapeutix
OCUL
$2.2B
| $30.1M | ﹤0.01% |
2,475,849
-3,227,932
| -57% | -$39.2M |
|
1884
Corcept Therapeutics
CORT
$12.4B
| $30M | ﹤0.01% |
863,052
+751,465
| +673% | +$59M |
|
1885
PACCAR
PCAR
$68.8B
| $30M | ﹤0.01% |
274,254
+69,777
| +34% | +$7.15M |
|
1886
Olema Pharmaceuticals
OLMA
$930M
| $30M | ﹤0.01% |
1,200,307
-36,608
| -3% | -$651K |
|
1887
PUT
ProShares UltraPro Short S&P 500
SPXU
$380M
| $30M | ﹤0.01% |
603,335
+272,285
| +82% | +$14.2M |
|
1888
CALL
Uranium Energy
UEC
$5.55B
| $30M | ﹤0.01% |
2,567,800
+1,000,400
| +64% | +$13.1M |
|
1889
Evercore
EVR
$11.8B
| $30M | ﹤0.01% |
+88,142
| New | +$28.3M |
|
1890
PUT
Tower Semiconductor
TSEM
$30B
| $30M | ﹤0.01% |
255,400
+155,600
| +156% | +$15M |
|
|
PSKY
1891
CALL
Paramount Skydance Corp
PSKY
$11.4B
| $29.9M | ﹤0.01% |
2,230,727
-2,416,071
| -52% | -$37.7M |
|
|
1892
CALL
Realty Income
O
$59.4B
| $29.9M | ﹤0.01% |
530,200
-122,300
| -19% | -$7.08M |
|
1893
Aaon
AAON
$7.24B
| $29.9M | ﹤0.01% |
391,918
+372,841
| +1,954% | +$34.4M |
|
1894
Nexstar Media Group
NXST
$5.84B
| $29.9M | ﹤0.01% |
147,164
+143,110
| +3,530% | +$27.9M |
|
1895
Portland General Electric
POR
$5.97B
| $29.9M | ﹤0.01% |
622,028
+416,627
| +203% | +$19.7M |
|
1896
Leidos
LDOS
$18B
| $29.8M | ﹤0.01% |
165,425
-594,344
| -78% | -$113M |
|
1897
Zai Lab
ZLAB
$2.91B
| $29.8M | ﹤0.01% |
1,687,846
+700,803
| +71% | +$16.4M |
|
|
AERO
1898
Grupo Aeromexico SAB de CV
AERO
$2.3B
| $29.7M | ﹤0.01% |
+1,353,963
| New | +$25.9M |
|
1899
Check Point Software Technologies
CHKP
$13.4B
| $29.7M | ﹤0.01% |
160,113
-691,044
| -81% | -$134M |
|
1900
CALL
Direxion Daily Regional Banks Bull 3X ETF
DPST
$417M
| $29.7M | ﹤0.01% |
294,000
-48,300
| -14% | -$4.54M |
|
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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.