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 | |
|---|---|---|---|---|---|---|
|
GRO
9826
Brazil Potash Corp
GRO
$135M
| $340K | ﹤0.01% |
180,148
+101,959
| +130% | +$231K |
|
9827
CALL
Immuneering
IMRX
$327M
| $340K | ﹤0.01% |
+51,700
| New | +$332K |
|
9828
Roundhill Video Games ETF
NERD
$16.1M
| $340K | ﹤0.01% |
14,075
+4,266
| +43% | +$111K |
|
9829
PUT
John Wiley & Sons Class A
WLY
$2.61B
| $340K | ﹤0.01% |
11,100
-1,100
| -9% | -$38.7K |
|
9830
PUT
Sana Biotechnology
SANA
$1.06B
| $340K | ﹤0.01% |
83,500
-15,000
| -15% | -$67.2K |
|
|
XRPT
9831
CALL
Volatility Shares Trust XRP 2X ETF
XRPT
$43.5M
| $340K | ﹤0.01% |
3,445
+1,055
| +44% | +$190K |
|
9832
MDxHealth
MDXH
$41.5M
| $340K | ﹤0.01% |
95,112
+46,174
| +94% | +$182K |
|
|
EBIT
9833
Harbor AlphaEdge Small Cap Earners ETF
EBIT
$12.2M
| $339K | ﹤0.01% |
10,103
-3,751
| -27% | -$127K |
|
9834
PUT
Gates Industrial Corp
GTES
$7.03B
| $339K | ﹤0.01% |
15,800
-11,000
| -41% | -$254K |
|
9835
M/I Homes
MHO
$3.85B
| $339K | ﹤0.01% |
2,651
-13,658
| -84% | -$1.81M |
|
|
TIC
9836
PUT
TIC Solutions Inc
TIC
$2.15B
| $339K | ﹤0.01% |
33,545
-4,180
| -11% | -$46.5K |
|
|
ACLX
9837
CALL
DELISTED
Arcellx
ACLX
| $339K | ﹤0.01% |
5,200
-11,300
| -68% | -$901K |
|
9838
PUT
Sixth Street Specialty
TSLX
$1.78B
| $339K | ﹤0.01% |
15,600
+800
| +5% | +$17.4K |
|
|
LIEN
9839
Chicago Atlantic BDC
LIEN
$217M
| $339K | ﹤0.01% |
32,784
+16,903
| +106% | +$177K |
|
9840
First Trust S-Network Streaming and Gaming ETF
BNGE
$4.96M
| $338K | ﹤0.01% |
9,012
-2,537
| -22% | -$97.7K |
|
|
BORR
9841
CALL
Borr Drilling
BORR
$1.37B
| $338K | ﹤0.01% |
83,900
+36,600
| +77% | +$121K |
|
9842
CALL
CytomX Therapeutics
CTMX
$732M
| $338K | ﹤0.01% |
79,300
-55,200
| -41% | -$210K |
|
|
CTO
9843
CALL
CTO Realty Growth
CTO
$825M
| $337K | ﹤0.01% |
18,300
-5,200
| -22% | -$88.9K |
|
9844
PUT
UFP Industries
UFPI
$4.96B
| $337K | ﹤0.01% |
3,700
-1,500
| -29% | -$137K |
|
9845
CALL
Phibro Animal Health
PAHC
$1.39B
| $336K | ﹤0.01% |
+9,000
| New | +$366K |
|
9846
PUT
Zura Bio
ZURA
$534M
| $335K | ﹤0.01% |
64,000
+32,200
| +101% | +$127K |
|
9847
PUT
Riley Exploration Permian
REPX
$800M
| $335K | ﹤0.01% |
12,700
-3,800
| -23% | -$101K |
|
9848
CALL
Fortune Brands Innovations
FBIN
$5.71B
| $335K | ﹤0.01% |
6,700
-4,600
| -41% | -$231K |
|
9849
CALL
Safety Insurance
SAFT
$1.52B
| $335K | ﹤0.01% |
+4,300
| New | +$318K |
|
9850
PUT
ProPetro Holding
PUMP
$1.49B
| $335K | ﹤0.01% |
35,200
+5,300
| +18% | +$46.1K |
|
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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.