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 | |
|---|---|---|---|---|---|---|
1076
Valvoline
VVV
$4.25B
| $74.1M | 0.01% |
2,550,771
+2,189,508
| +606% | +$70.3M |
|
1077
American Eagle Outfitters
AEO
$2.73B
| $73.9M | 0.01% |
2,803,198
+627,250
| +29% | +$12.4M |
|
1078
Cytokinetics
CYTK
$10.5B
| $73.9M | 0.01% |
1,162,937
-223,128
| -16% | -$13.9M |
|
1079
PUT
Zoom
ZM
$30.8B
| $73.8M | 0.01% |
855,800
-142,100
| -14% | -$12M |
|
1080
Quest Diagnostics
DGX
$26.2B
| $73.8M | 0.01% |
425,236
+294,622
| +226% | +$53.6M |
|
1081
Columbia Banking Systems
COLB
$9.12B
| $73.8M | 0.01% |
2,639,226
+2,144,265
| +433% | +$58M |
|
1082
PUT
Ford
F
$55.4B
| $73.7M | 0.01% |
5,620,100
-4,389,100
| -44% | -$56.6M |
|
1083
AST SpaceMobile
ASTS
$21.4B
| $73.6M | 0.01% |
1,013,680
+575,820
| +132% | +$41.1M |
|
1084
American Electric Power
AEP
$67.9B
| $73.4M | 0.01% |
636,917
+21,071
| +3% | +$2.49M |
|
1085
Warner Music
WMG
$13B
| $73.4M | 0.01% |
2,393,859
+1,237,838
| +107% | +$37.8M |
|
1086
CALL
Ciena
CIEN
$62.7B
| $73.3M | 0.01% |
313,600
+14,600
| +5% | +$2.83M |
|
1087
CALL
Atlassian
TEAM
$42.1B
| $73.3M | 0.01% |
452,100
-1,500
| -0.3% | -$235K |
|
1088
Chubb
CB
$132B
| $73.3M | 0.01% |
234,724
-312,637
| -57% | -$91.4M |
|
1089
PUT
State Street Materials Select Sector SPDR ETF
XLB
$8.57B
| $73.2M | 0.01% |
1,614,700
+1,034,500
| +178% | +$45.7M |
|
1090
MKS Inc
MKSI
$20.7B
| $73.2M | 0.01% |
457,873
+316,715
| +224% | +$47M |
|
1091
Ryan Specialty Holdings
RYAN
$11B
| $73.1M | 0.01% |
1,416,333
+483,214
| +52% | +$26.5M |
|
1092
OneMain Financial
OMF
$7.44B
| $73M | 0.01% |
1,080,561
+955,768
| +766% | +$58.1M |
|
1093
CALL
MetLife
MET
$61.4B
| $72.6M | 0.01% |
919,700
-123,100
| -12% | -$9.74M |
|
1094
PUT
Okta
OKTA
$26.9B
| $72.6M | 0.01% |
839,400
-16,900
| -2% | -$1.47M |
|
|
FOLD
1095
DELISTED
Amicus Therapeutics
FOLD
| $72.6M | 0.01% |
5,096,796
-3,153,344
| -38% | -$31M |
|
1096
CALL
Automatic Data Processing
ADP
$110B
| $72.5M | 0.01% |
282,000
-62,300
| -18% | -$16.6M |
|
1097
CALL
Johnson Controls International
JCI
$92.6B
| $72.5M | 0.01% |
605,500
+68,500
| +13% | +$7.86M |
|
1098
Dynatrace
DT
$14.7B
| $72.3M | 0.01% |
1,667,993
-3,883,171
| -70% | -$181M |
|
1099
CALL
Opendoor
OPEN
$3.54B
| $71.9M | 0.01% |
12,331,200
-4,496,117
| -27% | -$32.2M |
|
1100
PUT
Lyft
LYFT
$6.48B
| $71.8M | 0.01% |
3,707,700
-1,268,000
| -25% | -$26.4M |
|
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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.