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 | |
|---|---|---|---|---|---|---|
176
Berkshire Hathaway Class B
BRK.B
$1.11T
| $526M | 0.08% |
1,046,513
+599,567
| +134% | +$298M |
|
177
CALL
GE Aerospace
GE
$382B
| $523M | 0.08% |
1,697,500
+255,900
| +18% | +$77.1M |
|
178
CALL
Vertiv
VRT
$108B
| $519M | 0.08% |
3,205,700
+1,281,600
| +67% | +$223M |
|
179
PUT
State Street Technology Select Sector SPDR ETF
XLK
$122B
| $517M | 0.08% |
3,593,800
-1,103,600
| -23% | -$159M |
|
180
CALL
Shopify
SHOP
$196B
| $516M | 0.08% |
3,207,900
-100,800
| -3% | -$16.2M |
|
181
CALL
ProShares UltraPro QQQ
TQQQ
$36.7B
| $515M | 0.08% |
9,764,800
-6,776,600
| -41% | -$364M |
|
182
Equinix
EQIX
$102B
| $513M | 0.08% |
669,343
+381,412
| +132% | +$299M |
|
183
PUT
Dell
DELL
$285B
| $510M | 0.08% |
4,055,300
+466,300
| +13% | +$65.7M |
|
|
B
184
CALL
Barrick Mining
B
$66B
| $507M | 0.08% |
11,643,700
+984,200
| +9% | +$36.9M |
|
185
PUT
Visa
V
$677B
| $507M | 0.08% |
1,445,100
-539,700
| -27% | -$184M |
|
186
Ross Stores
ROST
$80.8B
| $506M | 0.08% |
2,809,181
+1,231,532
| +78% | +$206M |
|
187
CALL
Applied Materials
AMAT
$417B
| $503M | 0.08% |
1,957,300
+130,700
| +7% | +$31.3M |
|
188
Medtronic
MDT
$116B
| $502M | 0.08% |
5,229,188
+1,527,713
| +41% | +$148M |
|
189
CALL
ExxonMobil
XOM
$657B
| $498M | 0.07% |
4,141,928
+229,188
| +6% | +$26.6M |
|
190
CALL
PayPal
PYPL
$50.5B
| $494M | 0.07% |
8,460,000
+1,664,600
| +24% | +$108M |
|
191
United Airlines
UAL
$41B
| $492M | 0.07% |
4,401,311
+61,955
| +1% | +$6.26M |
|
192
CALL
Marvell Technology
MRVL
$191B
| $487M | 0.07% |
5,725,400
-2,912,800
| -34% | -$255M |
|
193
CALL
Bank of America
BAC
$448B
| $485M | 0.07% |
8,810,400
-1,723,400
| -16% | -$91.1M |
|
194
PUT
State Street Energy Select Sector SPDR ETF
XLE
$39.8B
| $484M | 0.07% |
10,819,600
+2,861,000
| +36% | +$127M |
|
195
Walmart Inc
WMT
$901B
| $483M | 0.07% |
4,337,577
-328,817
| -7% | -$35.3M |
|
196
Intel
INTC
$493B
| $483M | 0.07% |
13,094,201
+8,484,368
| +184% | +$320M |
|
|
197
PUT
Applied Materials
AMAT
$417B
| $482M | 0.07% |
1,875,300
+111,300
| +6% | +$26.7M |
|
198
Gilead Sciences
GILD
$168B
| $477M | 0.07% |
3,887,520
-1,320,146
| -25% | -$160M |
|
199
PUT
MongoDB
MDB
$35.3B
| $475M | 0.07% |
1,131,500
-273,100
| -19% | -$99.4M |
|
200
PUT
State Street Financial Select Sector SPDR ETF
XLF
$59B
| $473M | 0.07% |
8,638,100
-2,130,800
| -20% | -$114M |
|
Similar funds
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.