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 | |
|---|---|---|---|---|---|---|
1201
PUT
Ciena
CIEN
$62.7B
| $63.8M | 0.01% |
272,800
+70,000
| +35% | +$13.6M |
|
1202
CALL
Snap
SNAP
$8.96B
| $63.7M | 0.01% |
7,890,600
-5,186,900
| -40% | -$41M |
|
1203
Hims & Hers Health
HIMS
$6.71B
| $63.6M | 0.01% |
1,959,910
+1,804,139
| +1,158% | +$77.3M |
|
1204
PUT
D.R. Horton
DHI
$41.9B
| $63.6M | 0.01% |
441,800
-28,300
| -6% | -$4.31M |
|
|
FISV
1205
PUT
Fiserv Inc
FISV
$29.5B
| $63.5M | 0.01% |
944,700
+260,900
| +38% | +$21.8M |
|
1206
PUT
General Dynamics
GD
$106B
| $63.3M | 0.01% |
188,100
+28,700
| +18% | +$9.79M |
|
1207
PUT
NuScale Power
SMR
$4.04B
| $63.3M | 0.01% |
4,468,000
+1,850,700
| +71% | +$52.9M |
|
1208
Truist Financial
TFC
$64.7B
| $63.2M | 0.01% |
1,284,299
-1,798,339
| -58% | -$82.8M |
|
1209
New York Times
NYT
$10.3B
| $63.1M | 0.01% |
908,703
+570,065
| +168% | +$35.3M |
|
1210
CALL
Boston Scientific
BSX
$74.9B
| $63M | 0.01% |
660,600
+59,200
| +10% | +$5.8M |
|
1211
CALL
Interactive Brokers
IBKR
$41.4B
| $62.8M | 0.01% |
977,200
-394,400
| -29% | -$26.4M |
|
1212
PUT
Union Pacific
UNP
$174B
| $62.8M | 0.01% |
271,600
+23,500
| +9% | +$5.36M |
|
1213
PUT
Opendoor
OPEN
$3.54B
| $62.8M | 0.01% |
10,774,300
-2,370,527
| -18% | -$17M |
|
1214
GlobalFoundries
GFS
$28.9B
| $62.8M | 0.01% |
1,798,019
-1,254,491
| -41% | -$44.6M |
|
1215
Bank of Hawaii
BOH
$3.13B
| $62.5M | 0.01% |
914,673
+222,040
| +32% | +$14.6M |
|
|
PSKY
1216
PUT
Paramount Skydance Corp
PSKY
$11.2B
| $62.5M | 0.01% |
4,664,400
+1,908,441
| +69% | +$29.8M |
|
1217
PUT
Lemonade
LMND
$4.1B
| $62.4M | 0.01% |
877,300
-119,500
| -12% | -$8.03M |
|
1218
PUT
Dow Inc
DOW
$21.9B
| $62.4M | 0.01% |
2,670,000
-636,800
| -19% | -$14.6M |
|
1219
PUT
VanEck Junior Gold Miners ETF
GDXJ
$8.33B
| $62.4M | 0.01% |
548,300
-297,200
| -35% | -$30.7M |
|
1220
Royal Bank of Canada
RY
$297B
| $62.4M | 0.01% |
365,829
-175,451
| -32% | -$26.9M |
|
1221
eBay
EBAY
$46.5B
| $62.2M | 0.01% |
714,524
-738,566
| -51% | -$63.9M |
|
1222
CALL
iShares MSCI Australia ETF
EWA
$1.45B
| $62.2M | 0.01% |
2,374,400
-54,800
| -2% | -$1.45M |
|
1223
PUT
Marathon Digital Holdings
MARA
$3.56B
| $62.1M | 0.01% |
6,912,300
-2,257,900
| -25% | -$33.3M |
|
1224
State Street
STT
$52.2B
| $62M | 0.01% |
480,669
+413,659
| +617% | +$49.5M |
|
1225
Expedia Group
EXPE
$39.4B
| $62M | 0.01% |
218,826
-114,476
| -34% | -$28.3M |
|
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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.