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 | |
|---|---|---|---|---|---|---|
11601
Pulmonx
LUNG
$104M
| $100K | ﹤0.01% |
45,257
-171,919
| -79% | -$323K |
|
11602
PUT
Vaalco Energy
EGY
$608M
| $99.7K | ﹤0.01% |
27,400
-21,300
| -44% | -$78.8K |
|
|
CMRC
11603
CALL
Commerce.com Inc Series 1
CMRC
$181M
| $99.7K | ﹤0.01% |
+24,200
| New | +$112K |
|
11604
Lantern Pharma
LTRN
$33.9M
| $99.7K | ﹤0.01% |
+32,895
| New | +$122K |
|
|
ATYR
11605
CALL
aTyr Pharma
ATYR
$54.8M
| $99.6K | ﹤0.01% |
127,200
-72,600
| -36% | -$59.6K |
|
|
WTF
11606
Waton Financial Ltd
WTF
| $99.6K | ﹤0.01% |
+30,167
| New | +$135K |
|
11607
CALL
Spruce Power Holding Corp
SPRU
$35.4M
| $99.3K | ﹤0.01% |
19,500
-4,700
| -19% | -$19.1K |
|
11608
Blue Ridge Bankshares
BRBS
$331M
| $99.1K | ﹤0.01% |
23,215
-83,259
| -78% | -$361K |
|
|
CRCG
11609
PUT
Leverage Shares 2X Long CRCL Daily ETF
CRCG
$113M
| $99.1K | ﹤0.01% |
3,810
+1,600
| +72% | +$87.4K |
|
11610
CALL
Star Holdings Shares of Beneficial Interest
STHO
$118M
| $98.8K | ﹤0.01% |
12,000
-1,500
| -11% | -$11.5K |
|
|
OBE
11611
PUT
Obsidian Energy
OBE
$712M
| $98.7K | ﹤0.01% |
+16,100
| New | +$97.4K |
|
11612
PUT
SES AI
SES
$223M
| $98.1K | ﹤0.01% |
54,500
-65,500
| -55% | -$147K |
|
|
HYFT
11613
PUT
MindWalk Holdings
HYFT
$66.3M
| $98.1K | ﹤0.01% |
+53,900
| New | +$94.9K |
|
11614
PUT
Lexicon Pharmaceuticals
LXRX
$1.03B
| $98.1K | ﹤0.01% |
85,300
-11,300
| -12% | -$15.5K |
|
|
NA
11615
CALL
Nano Labs
NA
$43.4M
| $98K | ﹤0.01% |
31,100
-29,400
| -49% | -$126K |
|
|
RWT
11616
CALL
Redwood Trust
RWT
$604M
| $97.9K | ﹤0.01% |
17,700
-18,800
| -52% | -$103K |
|
11617
Bridgeline Digital
BLIN
$12.6M
| $97.8K | ﹤0.01% |
117,838
+86,769
| +279% | +$99.3K |
|
11618
CALL
Atlas Lithium Corp
ATLX
$94.7M
| $97.7K | ﹤0.01% |
23,100
-40,600
| -64% | -$205K |
|
11619
Evogene
EVGN
$9.49M
| $97.6K | ﹤0.01% |
88,764
+31,189
| +54% | +$36.4K |
|
|
MEME
11620
PUT
Roundhill Meme Stock ETF
MEME
$15.4M
| $97.3K | ﹤0.01% |
+15,700
| New | +$119K |
|
11621
PUT
Comtech Telecommunications
CMTL
$52.7M
| $97.3K | ﹤0.01% |
18,400
+5,300
| +40% | +$17.3K |
|
11622
PUT
Ambev
ABEV
$43.2B
| $97.3K | ﹤0.01% |
39,400
-900
| -2% | -$2.14K |
|
|
RDNW
11623
CALL
RideNow Group
RDNW
$248M
| $97.2K | ﹤0.01% |
17,600
-23,900
| -58% | -$112K |
|
11624
CALL
NRX Pharmaceuticals
NRXP
$140M
| $97K | ﹤0.01% |
35,800
+2,900
| +9% | +$7.78K |
|
11625
NexGel
NXGL
$5.21M
| $97K | ﹤0.01% |
60,230
+32,776
| +119% | +$67.7K |
|
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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.