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 | |
|---|---|---|---|---|---|---|
|
SPTB
7776
State Street SPDR Portfolio Treasury ETF
SPTB
$296M
| $836K | ﹤0.01% |
27,462
-5,533
| -17% | -$169K |
|
7777
PUT
AtaiBeckley Inc
ATAI
$2.69B
| $835K | ﹤0.01% |
204,200
+7,300
| +4% | +$34.4K |
|
|
CRON
7778
PUT
Cronos Group
CRON
$1.18B
| $834K | ﹤0.01% |
317,300
+137,000
| +76% | +$354K |
|
7779
CALL
AvalonBay Communities
AVB
| $834K | ﹤0.01% |
4,600
-21,800
| -83% | -$3.96M |
|
7780
CALL
Metallus
MTUS
$882M
| $834K | ﹤0.01% |
48,600
+16,100
| +50% | +$276K |
|
|
IRE
7781
PUT
Defiance Daily Target 2x Long IREN ETF
IRE
$288M
| $834K | ﹤0.01% |
+35,100
| New | +$1.78M |
|
|
SLDE
7782
PUT
Slide Insurance Holdings
SLDE
$2.59B
| $834K | ﹤0.01% |
42,800
+11,900
| +39% | +$198K |
|
7783
Invesco Quality Municipal Securities
IQI
$534M
| $833K | ﹤0.01% |
+83,681
| New | +$836K |
|
7784
Rimini Street
RMNI
$469M
| $833K | ﹤0.01% |
214,763
+132,042
| +160% | +$548K |
|
7785
Definitive Healthcare
DH
$73.1M
| $833K | ﹤0.01% |
+290,300
| New | +$805K |
|
7786
ProKidney
PROK
$284M
| $833K | ﹤0.01% |
371,797
+27,008
| +8% | +$71K |
|
7787
Invesco FTSE RAFI US 1500 Small-Mid ETF
PRFZ
$2.88B
| $833K | ﹤0.01% |
+18,148
| New | +$829K |
|
7788
PIMCO Dynamic Income Fund
PDI
$6.95B
| $833K | ﹤0.01% |
+47,021
| New | +$863K |
|
7789
Petrobras
PBR
$118B
| $832K | ﹤0.01% |
70,241
+31,258
| +80% | +$382K |
|
|
SSK
7790
REX-Osprey SOL + Staking ETF
SSK
$72.7M
| $832K | ﹤0.01% |
43,649
-487,142
| -92% | -$12M |
|
7791
PetMed Express
PETS
$37.7M
| $831K | ﹤0.01% |
259,709
+77,830
| +43% | +$195K |
|
7792
CALL
Genmab
GMAB
$20.1B
| $829K | ﹤0.01% |
26,900
-3,100
| -10% | -$96.6K |
|
|
INTW
7793
PUT
GraniteShares 2x Long INTC Daily ETF
INTW
$269M
| $828K | ﹤0.01% |
153,600
+73,600
| +92% | +$435K |
|
|
NFXL
7794
Direxion Daily NFLX Bull 2X ETF
NFXL
$158M
| $828K | ﹤0.01% |
+27,019
| New | +$1.19M |
|
|
KBDC
7795
Kayne Anderson BDC
KBDC
$881M
| $828K | ﹤0.01% |
+57,812
| New | +$842K |
|
7796
CALL
Mercury Insurance
MCY
$5.93B
| $828K | ﹤0.01% |
8,800
+1,600
| +22% | +$139K |
|
7797
State Street SPDR Portfolio TIPS ETF
SPIP
$1.01B
| $828K | ﹤0.01% |
31,891
-116,285
| -78% | -$3.05M |
|
7798
CALL
Gates Industrial Corp
GTES
$6.89B
| $827K | ﹤0.01% |
38,500
+23,400
| +155% | +$540K |
|
7799
PUT
Woodside Energy
WDS
$44.7B
| $826K | ﹤0.01% |
53,000
-5,300
| -9% | -$84.3K |
|
7800
PUT
Broadridge
BR
$19.7B
| $826K | ﹤0.01% |
3,700
-64,600
| -95% | -$14.7M |
|
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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.