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 | |
|---|---|---|---|---|---|---|
11351
PUT
KRONOS Worldwide
KRO
$975M
| $138K | ﹤0.01% |
31,300
+2,000
| +7% | +$9.71K |
|
11352
CALL
Gaotu Techedu
GOTU
$401M
| $138K | ﹤0.01% |
59,500
+7,400
| +14% | +$20.1K |
|
|
HDRNW
11353
Hadron Energy Warrant
HDRNW
$3M
| $138K | ﹤0.01% |
+336,404
| New | +$230K |
|
11354
James River Group Holdings
JRVR
$193M
| $138K | ﹤0.01% |
+21,667
| New | +$125K |
|
|
OYSEU
11355
Oyster Enterprises II Acquisition Corp Units
OYSEU
| $138K | ﹤0.01% |
13,161
-58
| -0.4% | -$600 |
|
|
BZAI
11356
PUT
Blaize Holdings
BZAI
$85.9M
| $137K | ﹤0.01% |
70,200
-152,200
| -68% | -$492K |
|
11357
Prospect Capital
PSEC
$1.15B
| $136K | ﹤0.01% |
52,699
-893,146
| -94% | -$2.39M |
|
11358
PUT
Odyssey Marine Exploration
OMEX
$52.9M
| $136K | ﹤0.01% |
69,600
+32,000
| +85% | +$74K |
|
11359
First Northwest Bancorp
FNWB
$109M
| $136K | ﹤0.01% |
14,542
-9,756
| -40% | -$88.7K |
|
|
AIRJ
11360
CALL
Montana Technologies Corp
AIRJ
$437M
| $136K | ﹤0.01% |
+34,500
| New | +$149K |
|
|
USBC
11361
USBC Inc
USBC
$149M
| $136K | ﹤0.01% |
214,108
+196,292
| +1,102% | +$165K |
|
11362
Relmada Therapeutics
RLMD
$512M
| $136K | ﹤0.01% |
+28,063
| New | +$94K |
|
11363
PUT
Senseonics Holdings Inc
SENS
$413M
| $135K | ﹤0.01% |
24,520
+12,005
| +96% | +$83.5K |
|
|
REE
11364
DELISTED
REE Automotive
REE
| $135K | ﹤0.01% |
+184,266
| New | +$163K |
|
11365
Summit State Bank
SSBI
$87.4M
| $135K | ﹤0.01% |
+11,628
| New | +$131K |
|
|
GMEU
11366
CALL
T-REX 2X Long GME Daily Target ETF
GMEU
$14.2M
| $135K | ﹤0.01% |
15,500
-19,400
| -56% | -$225K |
|
11367
CALL
Duos Technologies
DUOT
$286M
| $135K | ﹤0.01% |
+12,000
| New | +$113K |
|
11368
CALL
PharmaCyte Biotech
PMCB
$5.92M
| $135K | ﹤0.01% |
186,100
+175,500
| +1,656% | +$158K |
|
11369
PUT
Motorcar Parts of America
MPAA
$236M
| $135K | ﹤0.01% |
+10,900
| New | +$157K |
|
11370
PUT
ProShares Ultra Euro
ULE
$4.43M
| $134K | ﹤0.01% |
+10,200
| New | +$132K |
|
11371
PUT
Copel
ELPC
$7.77B
| $134K | ﹤0.01% |
+14,100
| New | +$135K |
|
11372
PUT
AerSale
ASLE
$280M
| $134K | ﹤0.01% |
18,800
+2,000
| +12% | +$14K |
|
11373
PUT
Westwater Resources
WWR
$72.7M
| $134K | ﹤0.01% |
178,100
+141,500
| +387% | +$176K |
|
|
11374
CALL
KRONOS Worldwide
KRO
$975M
| $133K | ﹤0.01% |
30,200
+9,300
| +44% | +$45.2K |
|
11375
Sensus Healthcare
SRTS
$47.1M
| $133K | ﹤0.01% |
+33,459
| New | +$124K |
|
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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.