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 | |
|---|---|---|---|---|---|---|
8651
PUT
Amplify Blockchain Technology ETF
BLOK
$1.09B
| $575K | ﹤0.01% |
10,100
-7,500
| -43% | -$484K |
|
8652
PUT
Limoneira
LMNR
$250M
| $574K | ﹤0.01% |
45,500
-13,600
| -23% | -$192K |
|
8653
PUT
American Resources Corp
AREC
$316M
| $574K | ﹤0.01% |
231,600
+72,500
| +46% | +$242K |
|
8654
Five Star Bancorp
FSBC
$1.15B
| $574K | ﹤0.01% |
+16,051
| New | +$557K |
|
8655
CALL
Arcosa
ACA
$7.12B
| $574K | ﹤0.01% |
5,400
-2,100
| -28% | -$212K |
|
|
TUYA
8656
Tuya Inc
TUYA
$1.09B
| $574K | ﹤0.01% |
271,974
-402,701
| -60% | -$918K |
|
8657
PUT
Mercury Insurance
MCY
$5.89B
| $574K | ﹤0.01% |
6,100
+2,000
| +49% | +$174K |
|
8658
CALL
Blue Bird Corp
BLBD
$2.02B
| $573K | ﹤0.01% |
12,200
-5,900
| -33% | -$308K |
|
|
NUVL
8659
PUT
DELISTED
Nuvalent
NUVL
| $573K | ﹤0.01% |
5,700
-50,100
| -90% | -$4.94M |
|
8660
Invesco S&P SmallCap 600 Pure Value ETF
RZV
$307M
| $573K | ﹤0.01% |
4,818
-1,049
| -18% | -$124K |
|
8661
Liquidity Services
LQDT
$1.34B
| $572K | ﹤0.01% |
18,863
-35,136
| -65% | -$944K |
|
8662
Protalix BioTherapeutics
PLX
$185M
| $572K | ﹤0.01% |
317,628
+280,322
| +751% | +$573K |
|
8663
CALL
Geospace Technologies
GEOS
$74.6M
| $572K | ﹤0.01% |
33,800
-37,300
| -52% | -$749K |
|
8664
CALL
Odyssey Marine Exploration
OMEX
$50.2M
| $572K | ﹤0.01% |
291,600
+104,600
| +56% | +$242K |
|
|
HPP
8665
PUT
Hudson Pacific Properties
HPP
$749M
| $571K | ﹤0.01% |
52,756
+17,785
| +51% | +$264K |
|
|
WDTE
8666
Defiance S&P 500 Weekly Distribution ETF
WDTE
$67.3M
| $571K | ﹤0.01% |
18,050
+1,274
| +8% | +$41.7K |
|
8667
PUT
ARK Space & Defense Innovation ETF
ARKX
$861M
| $571K | ﹤0.01% |
19,700
-800
| -4% | -$23.4K |
|
8668
Compass Minerals
CMP
$1.08B
| $571K | ﹤0.01% |
+29,058
| New | +$538K |
|
8669
TaskUs
TASK
$659M
| $570K | ﹤0.01% |
48,374
-92,202
| -66% | -$1.18M |
|
8670
Pulse Biosciences
PLSE
$3.34B
| $570K | ﹤0.01% |
41,530
+4,412
| +12% | +$68.8K |
|
|
SNCY
8671
PUT
DELISTED
Sun Country Airlines
SNCY
| $570K | ﹤0.01% |
39,600
+25,800
| +187% | +$330K |
|
8672
CALL
Knife River
KNF
$3.78B
| $570K | ﹤0.01% |
8,100
-19,500
| -71% | -$1.37M |
|
8673
PUT
Global X Cybersecurity ETF
BUG
$1.49B
| $570K | ﹤0.01% |
18,700
+3,600
| +24% | +$119K |
|
|
MAGN
8674
CALL
Magnera Corp
MAGN
$427M
| $569K | ﹤0.01% |
37,600
+11,000
| +41% | +$127K |
|
8675
PUT
America Movil
AMX
$71B
| $568K | ﹤0.01% |
27,500
-36,000
| -57% | -$792K |
|
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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.