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 | |
|---|---|---|---|---|---|---|
1951
CALL
ProShares UltraShort Bloomberg Natural Gas
KOLD
$105M
| $28.2M | ﹤0.01% |
798,700
+403,500
| +102% | +$12.6M |
|
1952
Alphatec Holdings
ATEC
$1.51B
| $28.1M | ﹤0.01% |
1,337,565
+1,152,673
| +623% | +$21.3M |
|
|
EXAS
1953
CALL
DELISTED
Exact Sciences
EXAS
| $28.1M | ﹤0.01% |
277,100
-25,900
| -9% | -$2.08M |
|
1954
Certara
CERT
$1.22B
| $28.1M | ﹤0.01% |
3,190,612
+2,035,801
| +176% | +$21M |
|
1955
Canadian National Railway
CNI
$76.7B
| $28.1M | ﹤0.01% |
283,867
+198,166
| +231% | +$19.1M |
|
1956
CALL
Truist Financial
TFC
$64.9B
| $28M | ﹤0.01% |
569,700
-69,500
| -11% | -$3.2M |
|
1957
CALL
Plains GP Holdings
PAGP
$5.11B
| $28M | ﹤0.01% |
1,464,400
+300,400
| +26% | +$5.42M |
|
1958
PUT
Macy's
M
$6.16B
| $28M | ﹤0.01% |
1,271,000
-413,900
| -25% | -$8.47M |
|
1959
PUT
Riot Platforms
RIOT
$7.14B
| $28M | ﹤0.01% |
2,208,800
-1,290,600
| -37% | -$22.1M |
|
1960
The RealReal
REAL
$1.39B
| $27.9M | ﹤0.01% |
1,770,420
-150,944
| -8% | -$1.97M |
|
1961
FirstEnergy
FE
$27.4B
| $27.9M | ﹤0.01% |
623,451
-3,496,217
| -85% | -$161M |
|
1962
CALL
First Horizon
FHN
$12.4B
| $27.9M | ﹤0.01% |
1,167,300
+974,800
| +506% | +$21.7M |
|
1963
PUT
Welltower
WELL
$170B
| $27.9M | ﹤0.01% |
150,300
-5,400
| -3% | -$1.01M |
|
1964
Brunswick
BC
$5.36B
| $27.9M | ﹤0.01% |
375,708
+361,524
| +2,549% | +$24.5M |
|
1965
MGIC Investment
MTG
$6.39B
| $27.8M | ﹤0.01% |
950,745
+666,022
| +234% | +$18.7M |
|
1966
CALL
Generac Holdings
GNRC
$12.9B
| $27.8M | ﹤0.01% |
203,700
+81,000
| +66% | +$13.1M |
|
1967
ADMA Biologics
ADMA
$2.12B
| $27.8M | ﹤0.01% |
1,522,570
-596,592
| -28% | -$10.1M |
|
|
1968
CALL
FirstEnergy
FE
$27.4B
| $27.8M | ﹤0.01% |
620,100
+238,500
| +63% | +$11M |
|
1969
CALL
Molina Healthcare
MOH
$11.1B
| $27.7M | ﹤0.01% |
159,900
+38,600
| +32% | +$6.34M |
|
1970
CALL
MPLX
MPLX
$60.3B
| $27.7M | ﹤0.01% |
519,800
+48,100
| +10% | +$2.51M |
|
1971
CALL
JB Hunt Transport Services
JBHT
$26.3B
| $27.7M | ﹤0.01% |
142,600
+52,300
| +58% | +$8.98M |
|
1972
TKO Group
TKO
$14.7B
| $27.7M | ﹤0.01% |
132,583
-675,083
| -84% | -$131M |
|
1973
Dave Inc
DAVE
$4.27B
| $27.7M | ﹤0.01% |
125,008
-8,092
| -6% | -$1.74M |
|
1974
Insulet
PODD
$9.94B
| $27.7M | ﹤0.01% |
97,363
-255,080
| -72% | -$79.8M |
|
1975
CALL
Dynatrace
DT
$14.2B
| $27.7M | ﹤0.01% |
638,300
+341,000
| +115% | +$15.9M |
|
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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.