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 | |
|---|---|---|---|---|---|---|
12051
Revelation Biosciences
REVB
$4.1M
| $43.8K | ﹤0.01% |
+13,682
| New | +$59.9K |
|
12052
Aprea Therapeutics
APRE
$8.42M
| $43.5K | ﹤0.01% |
+51,041
| New | +$62.7K |
|
|
YYGH
12053
YY Group Holding Ltd
YYGH
$4.26M
| $43.5K | ﹤0.01% |
+144
| New | +$60.2K |
|
|
IH
12054
iHuman
IH
$69.5M
| $43.5K | ﹤0.01% |
20,714
+4,556
| +28% | +$12.1K |
|
12055
CALL
Equillium
EQ
$150M
| $43.4K | ﹤0.01% |
28,000
+10,000
| +56% | +$12.2K |
|
12056
CALL
Acacia Research
ACTG
$448M
| $43.4K | ﹤0.01% |
+11,600
| New | +$41.6K |
|
|
LIMN
12057
Liminatus Pharma
LIMN
$9.4M
| $43.3K | ﹤0.01% |
+70,930
| New | +$78.8K |
|
12058
Good Times Restaurants
GTIM
$16.4M
| $43.1K | ﹤0.01% |
+35,650
| New | +$49.9K |
|
12059
Identive
INVE
$64.2M
| $43.1K | ﹤0.01% |
11,231
-28,473
| -72% | -$103K |
|
12060
PUT
NetSol Technologies
NTWK
$48.3M
| $43K | ﹤0.01% |
+14,200
| New | +$51.9K |
|
|
12061
PUT
Acacia Research
ACTG
$448M
| $43K | ﹤0.01% |
+11,500
| New | +$41.3K |
|
12062
CPI Aerostructures
CVU
$77.6M
| $42.9K | ﹤0.01% |
+10,828
| New | +$29.6K |
|
12063
VolitionRx Ltd
VNRX
$6.89M
| $42.9K | ﹤0.01% |
8,387
-8,089
| -49% | -$61.4K |
|
12064
CALL
ADC Therapeutics
ADCT
$129M
| $42.7K | ﹤0.01% |
+12,100
| New | +$49.1K |
|
|
RPTX
12065
CALL
DELISTED
Repare Therapeutics
RPTX
| $42.6K | ﹤0.01% |
+16,400
| New | +$33K |
|
|
ASNS
12066
DELISTED
ACTELIS NETWORKS INC
ASNS
| $42.6K | ﹤0.01% |
+86,186
| New | +$319K |
|
12067
Oxbridge Re Holdings
OXBR
$12.4M
| $42.6K | ﹤0.01% |
+31,778
| New | +$47K |
|
12068
PUT
SkinHealth Systems
SKIN
$86.8M
| $42.4K | ﹤0.01% |
30,500
+4,800
| +19% | +$6.94K |
|
12069
PUT
Magnachip Semiconductor
MX
$139M
| $42.3K | ﹤0.01% |
16,600
+4,700
| +39% | +$13.1K |
|
12070
Network-1 Technologies
NTIP
$35.4M
| $42.3K | ﹤0.01% |
32,287
+9,836
| +44% | +$14.3K |
|
12071
PUT
Ardagh Metal Packaging
AMBP
$3.13B
| $42.2K | ﹤0.01% |
10,300
-62,300
| -86% | -$236K |
|
|
GURE
12072
Gulf Resources
GURE
$4.63M
| $42.1K | ﹤0.01% |
11,391
+97
| +0.9% | +$487 |
|
|
OLPX
12073
CALL
DELISTED
Olaplex Holdings
OLPX
| $42.1K | ﹤0.01% |
31,400
+4,100
| +15% | +$4.88K |
|
12074
Milestone Scientific
MLSS
$43.9M
| $42K | ﹤0.01% |
+153,775
| New | +$58.5K |
|
12075
ZW Data Action Technologies
CNET
$4.73M
| $41.9K | ﹤0.01% |
30,801
-6,036
| -16% | -$10.6K |
|
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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.