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 | |
|---|---|---|---|---|---|---|
|
MPT
3201
PUT
Medical Properties Trust
MPT
$2.5B
| $10.2M | ﹤0.01% |
2,042,300
-304,000
| -13% | -$1.58M |
|
3202
Energy Fuels
UUUU
$3.77B
| $10.2M | ﹤0.01% |
701,966
-1,699,324
| -71% | -$28.8M |
|
3203
CALL
Transmedics
TMDX
$3.07B
| $10.2M | ﹤0.01% |
83,900
-274,200
| -77% | -$34.4M |
|
3204
Taysha Gene Therapies
TSHA
$1.94B
| $10.2M | ﹤0.01% |
1,854,855
+1,487,546
| +405% | +$7.22M |
|
3205
AptarGroup
ATR
$8.4B
| $10.2M | ﹤0.01% |
83,600
-64,364
| -43% | -$7.95M |
|
3206
PUT
Baxter International
BAX
$13.8B
| $10.2M | ﹤0.01% |
533,500
-64,700
| -11% | -$1.29M |
|
3207
Monolithic Power Systems
MPWR
$68.9B
| $10.2M | ﹤0.01% |
11,229
-249,237
| -96% | -$240M |
|
3208
CALL
iShares US Aerospace & Defense ETF
ITA
$15.1B
| $10.2M | ﹤0.01% |
47,400
-28,300
| -37% | -$5.92M |
|
3209
CALL
Hubbell
HUBB
$27B
| $10.2M | ﹤0.01% |
22,900
+7,000
| +44% | +$3.07M |
|
3210
CALL
iPath Series B S&P 500 VIX Short-Term Futures ETN
VXX
$140M
| $10.2M | ﹤0.01% |
383,650
-423,100
| -52% | -$13.8M |
|
3211
BioCryst Pharmaceuticals
BCRX
$2.49B
| $10.1M | ﹤0.01% |
1,298,902
-60,980
| -4% | -$441K |
|
3212
Newmark Group
NMRK
$2.76B
| $10.1M | ﹤0.01% |
584,037
-342,916
| -37% | -$6.01M |
|
3213
CALL
Boyd Gaming
BYD
$6.11B
| $10.1M | ﹤0.01% |
118,700
-45,500
| -28% | -$3.75M |
|
3214
Cohen & Steers
CNS
$4.36B
| $10.1M | ﹤0.01% |
160,987
+81,293
| +102% | +$5.29M |
|
3215
PUT
Huntington Ingalls Industries
HII
$12.9B
| $10.1M | ﹤0.01% |
29,700
-43,100
| -59% | -$13.4M |
|
3216
Westamerica Bancorp
WABC
$1.38B
| $10.1M | ﹤0.01% |
210,400
+43,165
| +26% | +$2.07M |
|
3217
Lamar Advertising Co
LAMR
$15.8B
| $10.1M | ﹤0.01% |
79,461
-25,163
| -24% | -$3.15M |
|
3218
PUT
Range Resources
RRC
$9.42B
| $10M | ﹤0.01% |
285,000
-18,400
| -6% | -$685K |
|
3219
Invesco CurrencyShares Japanese Yen Trust
FXY
$426M
| $10M | ﹤0.01% |
171,020
+146,271
| +591% | +$8.73M |
|
|
GOLD
3220
Gold.com Inc
GOLD
$1.28B
| $10M | ﹤0.01% |
294,419
-15,431
| -5% | -$441K |
|
3221
PUT
Restaurant Brands International
QSR
$27.1B
| $10M | ﹤0.01% |
146,600
-12,400
| -8% | -$854K |
|
3222
Lyell Immunopharma
LYEL
$342M
| $9.99M | ﹤0.01% |
324,701
-14,790
| -4% | -$331K |
|
3223
CALL
United States Antimony
UAMY
$825M
| $9.99M | ﹤0.01% |
1,990,800
+1,349,300
| +210% | +$10.6M |
|
3224
CALL
Advanced Energy
AEIS
$13.2B
| $9.99M | ﹤0.01% |
47,700
-25,100
| -34% | -$5.11M |
|
3225
PUT
Crescent Energy
CRGY
$4.03B
| $9.99M | ﹤0.01% |
1,190,330
+1,030,330
| +644% | +$9.05M |
|
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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.