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 | |
|---|---|---|---|---|---|---|
1101
CALL
Biogen
BIIB
$30.9B
| $71.6M | 0.01% |
407,000
+165,800
| +69% | +$27.1M |
|
1102
PUT
CAVA Group
CAVA
$8.11B
| $71.5M | 0.01% |
1,219,100
-502,300
| -29% | -$28M |
|
1103
Agree Realty
ADC
$9.25B
| $71.4M | 0.01% |
991,678
-652,073
| -40% | -$47.6M |
|
1104
PUT
Upstart Holdings
UPST
$3.01B
| $71.3M | 0.01% |
1,629,700
-1,409,100
| -46% | -$64.9M |
|
1105
PUT
Marriott International
MAR
$92.5B
| $71.1M | 0.01% |
229,300
-50,800
| -18% | -$14.5M |
|
1106
CALL
Enphase Energy
ENPH
$5.39B
| $71.1M | 0.01% |
2,219,000
-577,700
| -21% | -$18.7M |
|
1107
PUT
Cipher Digital
CIFR
$6.9B
| $70.9M | 0.01% |
4,804,900
+467,600
| +11% | +$8.25M |
|
|
GTLS
1108
DELISTED
Chart Industries
GTLS
| $70.7M | 0.01% |
342,991
+47,688
| +16% | +$9.66M |
|
1109
PUT
Amphenol
APH
$204B
| $70.7M | 0.01% |
523,300
-156,200
| -23% | -$20.9M |
|
1110
XPO
XPO
$24.7B
| $70.4M | 0.01% |
517,762
+458,401
| +772% | +$62.4M |
|
1111
Cloudflare
NET
$118B
| $70.3M | 0.01% |
356,619
-2,166
| -0.6% | -$458K |
|
1112
PUT
Core Scientific
CORZ
$6.36B
| $70.2M | 0.01% |
4,824,200
+2,522,800
| +110% | +$44M |
|
1113
CALL
Phillips 66
PSX
$90B
| $70.2M | 0.01% |
544,300
+63,000
| +13% | +$8.48M |
|
1114
Guidewire Software
GWRE
$14.4B
| $70.2M | 0.01% |
349,360
+111,190
| +47% | +$24.6M |
|
1115
Jacobs Solutions
J
$17B
| $70.1M | 0.01% |
529,125
+171,412
| +48% | +$25.1M |
|
1116
CALL
Direxion Daily Technology Bull 3x ETF
TECL
$6.47B
| $70M | 0.01% |
596,200
+6,400
| +1% | +$818K |
|
1117
HubSpot
HUBS
$12B
| $70M | 0.01% |
174,460
-14,638
| -8% | -$6.06M |
|
1118
CALL
Rio Tinto
RIO
$160B
| $70M | 0.01% |
874,300
+76,000
| +10% | +$5.47M |
|
|
FISV
1119
CALL
Fiserv Inc
FISV
$29.5B
| $69.9M | 0.01% |
1,041,000
+163,900
| +19% | +$13.7M |
|
1120
H&R Block
HRB
$6.76B
| $69.7M | 0.01% |
1,598,948
+202,769
| +15% | +$9.48M |
|
1121
Charter Communications
CHTR
$17.9B
| $69.6M | 0.01% |
333,218
+289,075
| +655% | +$65M |
|
1122
CALL
Norwegian Cruise Line
NCLH
$8.98B
| $69.5M | 0.01% |
3,115,900
-393,400
| -11% | -$8.31M |
|
1123
SiteOne Landscape Supply
SITE
$4.22B
| $69.5M | 0.01% |
557,668
-555,252
| -50% | -$70.3M |
|
1124
CALL
American International
AIG
$39.8B
| $69.4M | 0.01% |
811,800
+488,800
| +151% | +$39.1M |
|
1125
PUT
Eos Energy Enterprises
EOSE
$1.51B
| $69.4M | 0.01% |
6,056,400
+709,700
| +13% | +$10.2M |
|
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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.