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 | |
|---|---|---|---|---|---|---|
3751
Direxion Daily S&P 500 Bull 2X ETF
SPUU
$284M
| $6.92M | ﹤0.01% |
37,589
+18,299
| +95% | +$3.35M |
|
|
FITB
3752
Fifth Third Bancorp
FITB
$52.7B
| $6.91M | ﹤0.01% |
147,604
-7,716
| -5% | -$340K |
|
3753
PUT
Roivant Sciences
ROIV
$26.1B
| $6.9M | ﹤0.01% |
317,900
+59,100
| +23% | +$1.17M |
|
3754
PUT
Northern Trust
NTRS
$35B
| $6.9M | ﹤0.01% |
50,500
-22,200
| -31% | -$2.91M |
|
3755
CALL
RadNet
RDNT
$6.01B
| $6.89M | ﹤0.01% |
96,600
+71,900
| +291% | +$5.55M |
|
3756
PUT
Amer Sports
AS
$19.1B
| $6.89M | ﹤0.01% |
184,400
-262,500
| -59% | -$9.01M |
|
3757
Flex
FLEX
$46.6B
| $6.89M | ﹤0.01% |
113,980
-958,591
| -89% | -$59.2M |
|
|
AII
3758
American Integrity Insurance
AII
$470M
| $6.88M | ﹤0.01% |
330,203
+318,632
| +2,754% | +$7.09M |
|
3759
CALL
Zimmer Biomet
ZBH
$19.2B
| $6.87M | ﹤0.01% |
76,400
-10,200
| -12% | -$967K |
|
3760
TFS Financial
TFSL
$4.95B
| $6.87M | ﹤0.01% |
513,238
-127,429
| -20% | -$1.75M |
|
3761
iShares S&P 100 ETF
OEF
$20.5B
| $6.87M | ﹤0.01% |
+20,021
| New | +$6.8M |
|
3762
CALL
dLocal
DLO
$4.17B
| $6.86M | ﹤0.01% |
485,500
-100,200
| -17% | -$1.41M |
|
3763
Corbus Pharmaceuticals
CRBP
$195M
| $6.86M | ﹤0.01% |
+843,193
| New | +$10.4M |
|
3764
Ouster
OUST
$3.51B
| $6.86M | ﹤0.01% |
317,158
+9,068
| +3% | +$240K |
|
3765
Taboola.com
TBLA
$1.09B
| $6.86M | ﹤0.01% |
1,487,867
+943,786
| +173% | +$3.55M |
|
3766
CALL
Mirion Technologies
MIR
$3.96B
| $6.86M | ﹤0.01% |
292,700
+188,400
| +181% | +$4.7M |
|
3767
First Trust United Kingdom AlphaDEX Fund
FKU
$39.7M
| $6.85M | ﹤0.01% |
134,651
+16,058
| +14% | +$779K |
|
3768
PUT
Ultragenyx Pharmaceutical
RARE
$2.61B
| $6.85M | ﹤0.01% |
298,000
+207,200
| +228% | +$6.81M |
|
3769
Bentley Systems
BSY
$10.9B
| $6.85M | ﹤0.01% |
179,588
+26,404
| +17% | +$1.2M |
|
3770
CALL
Magna International
MGA
$18.8B
| $6.84M | ﹤0.01% |
128,400
-71,500
| -36% | -$3.49M |
|
3771
CALL
The RealReal
REAL
$1.39B
| $6.83M | ﹤0.01% |
433,000
+205,700
| +90% | +$2.69M |
|
3772
CALL
Copa Holdings
CPA
$6.14B
| $6.83M | ﹤0.01% |
56,600
-21,000
| -27% | -$2.57M |
|
3773
Regions Financial
RF
$27.2B
| $6.82M | ﹤0.01% |
251,722
-5,723
| -2% | -$146K |
|
3774
PUT
VICI Properties
VICI
$29B
| $6.82M | ﹤0.01% |
242,500
+122,200
| +102% | +$3.63M |
|
3775
PUT
Dynatrace
DT
$14.2B
| $6.82M | ﹤0.01% |
157,300
-37,600
| -19% | -$1.75M |
|
Similar funds
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.