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 | |
|---|---|---|---|---|---|---|
|
BBNX
3251
Beta Bionics
BBNX
$790M
| $9.78M | ﹤0.01% |
+320,880
| New | +$8.57M |
|
3252
Albany International
AIN
$1.84B
| $9.77M | ﹤0.01% |
192,652
+117,726
| +157% | +$6.1M |
|
3253
CALL
Thor Industries
THO
$4.11B
| $9.76M | ﹤0.01% |
95,100
-107,600
| -53% | -$11.2M |
|
|
CDTX
3254
CALL
DELISTED
Cidara Therapeutics
CDTX
| $9.76M | ﹤0.01% |
44,200
-13,300
| -23% | -$2.15M |
|
3255
PUT
Starwood Property Trust
STWD
$6.03B
| $9.75M | ﹤0.01% |
541,500
+159,900
| +42% | +$2.94M |
|
3256
PUT
Sweetgreen
SG
$748M
| $9.74M | ﹤0.01% |
1,441,200
-683,900
| -32% | -$4.7M |
|
3257
Sonoco
SON
$5.76B
| $9.74M | ﹤0.01% |
223,220
-65,047
| -23% | -$2.69M |
|
3258
American Superconductor
AMSC
$1.55B
| $9.72M | ﹤0.01% |
337,713
+322,892
| +2,179% | +$14M |
|
3259
PUT
Canadian National Railway
CNI
$76.7B
| $9.72M | ﹤0.01% |
98,300
-17,700
| -15% | -$1.7M |
|
3260
PUT
NextNav
NN
$3.36B
| $9.71M | ﹤0.01% |
583,500
+147,700
| +34% | +$2.1M |
|
3261
Pentair
PNR
$10.6B
| $9.69M | ﹤0.01% |
93,091
+59,269
| +175% | +$6.33M |
|
3262
Invesco S&P 500 High Beta ETF
SPHB
$957M
| $9.69M | ﹤0.01% |
82,820
-18,859
| -19% | -$2.15M |
|
3263
PUT
Coupang
CPNG
$29B
| $9.67M | ﹤0.01% |
409,800
-422,700
| -51% | -$12M |
|
3264
CALL
DigitalBridge
DBRG
$2.94B
| $9.67M | ﹤0.01% |
630,100
+518,200
| +463% | +$6.23M |
|
|
VISN
3265
PUT
Vistance Networks Inc
VISN
$2.66B
| $9.67M | ﹤0.01% |
533,100
+88,700
| +20% | +$1.53M |
|
3266
PUT
Amkor Technology
AMKR
$14.7B
| $9.66M | ﹤0.01% |
244,800
+44,000
| +22% | +$1.57M |
|
|
ANDG
3267
Andersen Group
ANDG
$5.52B
| $9.65M | ﹤0.01% |
+372,141
| New | +$9.36M |
|
3268
PUT
Deutsche Bank
DB
$72.5B
| $9.62M | ﹤0.01% |
249,500
-41,800
| -14% | -$1.51M |
|
3269
Keros Therapeutics
KROS
$200M
| $9.62M | ﹤0.01% |
472,520
+296,376
| +168% | +$5.2M |
|
3270
Playtika
PLTK
$957M
| $9.61M | ﹤0.01% |
2,432,065
+1,425,510
| +142% | +$5.57M |
|
3271
AtriCure
ATRC
$2.25B
| $9.6M | ﹤0.01% |
242,741
+197,242
| +434% | +$7.23M |
|
3272
CALL
Regal Rexnord
RRX
$11.7B
| $9.6M | ﹤0.01% |
68,400
+39,900
| +140% | +$5.68M |
|
3273
PJT Partners
PJT
$4.46B
| $9.59M | ﹤0.01% |
57,332
-21,846
| -28% | -$3.74M |
|
3274
CALL
Comstock Resources
CRK
$4.13B
| $9.57M | ﹤0.01% |
413,000
-8,800
| -2% | -$194K |
|
3275
PUT
SiTime
SITM
$21.4B
| $9.57M | ﹤0.01% |
27,100
+4,200
| +18% | +$1.31M |
|
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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.