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 | |
|---|---|---|---|---|---|---|
12076
PUT
Pulmonx
LUNG
$104M
| $41.8K | ﹤0.01% |
+18,900
| New | +$35.5K |
|
12077
PUT
BARK
BARK
$91.4M
| $41.8K | ﹤0.01% |
3,465
-30
| -0.9% | -$445 |
|
12078
PUT
CPI Aerostructures
CVU
$77.6M
| $41.6K | ﹤0.01% |
+10,500
| New | +$28.7K |
|
|
IPM
12079
Intelligent Protection Management Corp
IPM
$16.9M
| $41.3K | ﹤0.01% |
+24,007
| New | +$45.8K |
|
12080
Vince Holding Corp
VNCE
$80.9M
| $41.3K | ﹤0.01% |
+10,119
| New | +$31.1K |
|
12081
PUT
Maravai LifeSciences
MRVI
$849M
| $41.3K | ﹤0.01% |
12,700
+1,100
| +9% | +$3.7K |
|
12082
CALL
Rekor Systems
REKR
$98.2M
| $41.3K | ﹤0.01% |
29,900
-32,200
| -52% | -$65.7K |
|
|
GGRP
12083
CALL
Glimpse Group
GGRP
$19.6M
| $41.1K | ﹤0.01% |
44,400
+11,900
| +37% | +$15.1K |
|
12084
Inuvo
INUV
$12.9M
| $41.1K | ﹤0.01% |
16,561
-72,871
| -81% | -$210K |
|
12085
CALL
The Honest Company
HNST
$519M
| $41K | ﹤0.01% |
+15,900
| New | +$48.7K |
|
12086
Marti Technologies
MRT
$155M
| $40.8K | ﹤0.01% |
+17,235
| New | +$40.9K |
|
|
AERT
12087
Aeries Technology
AERT
$40.8M
| $40.8K | ﹤0.01% |
+9,883
| New | +$47.9K |
|
|
DSY
12088
Big Tree Cloud Holdings
DSY
$20.8M
| $40.6K | ﹤0.01% |
+7,450
| New | +$82.8K |
|
12089
AYTU BioPharma
AYTU
$25.5M
| $40.4K | ﹤0.01% |
+15,551
| New | +$34.9K |
|
|
TGHL
12090
The GrowHub Ltd
TGHL
$26.3M
| $40.3K | ﹤0.01% |
+122,079
| New | +$90.6K |
|
12091
Twin Vee PowerCats
VEEE
$6.73M
| $40.1K | ﹤0.01% |
+623
| New | +$49.4K |
|
12092
CALL
Zedge
ZDGE
$38.4M
| $40K | ﹤0.01% |
+12,200
| New | +$35.3K |
|
|
DHY
12093
Credit Suisse High Yield Credit Fund
DHY
$239M
| $39.9K | ﹤0.01% |
+19,951
| New | +$40.8K |
|
|
NBP
12094
CALL
NovaBridge Biosciences American Depositary Shares
NBP
$227M
| $39.8K | ﹤0.01% |
10,000
-400
| -4% | -$1.77K |
|
12095
CALL
Ispire Technology
ISPR
$89M
| $39.8K | ﹤0.01% |
14,200
+900
| +7% | +$2.09K |
|
12096
Ring Energy
REI
$357M
| $39.4K | ﹤0.01% |
45,274
-338,649
| -88% | -$323K |
|
12097
IRIDEX
IRIX
$14.9M
| $39.2K | ﹤0.01% |
34,395
-75,078
| -69% | -$77.3K |
|
|
LITB
12098
LightInTheBox
LITB
$60.8M
| $39.1K | ﹤0.01% |
17,445
-1,084
| -6% | -$2.53K |
|
12099
Matinas BioPharma
MTNB
$1.5M
| $38.5K | ﹤0.01% |
+65,734
| New | +$77.5K |
|
|
DTCX
12100
CALL
Datacentrex Inc
DTCX
$77.9M
| $38.2K | ﹤0.01% |
+13,900
| New | +$59K |
|
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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.