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 |
iShares Core S&P 500 ETF
IVV
|
+$9.91B |
| 2 |
SPCX
SpaceX
SPCX
|
+$871M |
| 3 |
Eli Lilly
LLY
|
+$719M |
| 4 |
Amazon
AMZN
|
+$698M |
| 5 |
Netflix
NFLX
|
+$627M |
Top Sells
| Rank | Stock | Value |
|---|---|---|
| 1 |
Micron Technology
MU
|
+$3B |
| 2 |
State Street SPDR Dow Jones Industrial Average ETF Trust
DIA
|
+$1.54B |
| 3 |
TSMC
TSM
|
+$1.42B |
| 4 |
NVIDIA
NVDA
|
+$1.41B |
| 5 |
SNDK
Sandisk
SNDK
|
+$771M |
Sector Composition
| Rank | Sector | Weight |
|---|---|---|
| 1 | Technology | 3.92% |
| 2 | Healthcare | 2.55% |
| 3 | Industrials | 2.24% |
| 4 | Financials | 2.13% |
| 5 | Consumer Discretionary | 1.76% |
| Name | Market Value | Portfolio Weight | Shares or Principal |
Change in Stake | Capital Flow | |
|---|---|---|---|---|---|---|
3901
CALL
Match Group
MTCH
$8.71B
| $7.91M | ﹤0.01% |
207,900
+47,400
| +30% | +$1.68M |
|
3902
PUT
Enlight Renewable Energy
ENLT
$11.9B
| $7.9M | ﹤0.01% |
88,800
+80,100
| +921% | +$7.06M |
|
3903
Radware
RDWR
$1.23B
| $7.9M | ﹤0.01% |
256,047
+231,667
| +950% | +$6.41M |
|
3904
nLIGHT
LASR
$3.03B
| $7.9M | ﹤0.01% |
113,418
-284,913
| -72% | -$19.9M |
|
|
SGI
3905
PUT
Somnigroup International
SGI
$13.9B
| $7.89M | ﹤0.01% |
100,700
+92,400
| +1,113% | +$6.77M |
|
3906
CALL
Oshkosh
OSK
$9.44B
| $7.89M | ﹤0.01% |
51,400
+13,200
| +35% | +$1.86M |
|
3907
PUT
ProShares UltraShort Silver
ZSL
$58M
| $7.89M | ﹤0.01% |
256,150
-67,720
| -21% | -$1.52M |
|
|
MDLN
3908
CALL
Medline Inc
MDLN
$31.4B
| $7.87M | ﹤0.01% |
199,600
-961,300
| -83% | -$38.7M |
|
3909
PUT
iShares US Medical Devices ETF
IHI
$3.46B
| $7.87M | ﹤0.01% |
159,200
+126,100
| +381% | +$6.4M |
|
3910
JPMorgan Municipal ETF
JMUB
$8.51B
| $7.86M | ﹤0.01% |
155,263
+15,905
| +11% | +$801K |
|
3911
PUT
Strive Inc
ASST
$1.05B
| $7.86M | ﹤0.01% |
720,322
+468,676
| +186% | +$6.93M |
|
3912
Astronics
ATRO
$4.61B
| $7.85M | ﹤0.01% |
96,566
-19,143
| -17% | -$1.31M |
|
3913
CALL
Twist Bioscience
TWST
$7.44B
| $7.84M | ﹤0.01% |
76,200
+22,100
| +41% | +$1.44M |
|
3914
TriNet
TNET
$3.16B
| $7.84M | ﹤0.01% |
158,359
+15,126
| +11% | +$648K |
|
3915
PUT
Blackstone Secured Lending
BXSL
$5.75B
| $7.83M | ﹤0.01% |
330,100
+152,700
| +86% | +$3.65M |
|
3916
Compass Therapeutics
CMPX
$405M
| $7.82M | ﹤0.01% |
3,570,674
+2,849,264
| +395% | +$8.41M |
|
|
CRWV
3917
CoreWeave
CRWV
$58.1B
| $7.82M | ﹤0.01% |
78,546
-1,240,611
| -94% | -$134M |
|
|
YSS
3918
CALL
York Space Systems
YSS
$1.44B
| $7.82M | ﹤0.01% |
317,500
+234,000
| +280% | +$7.26M |
|
3919
PUT
Lightwave Logic
LWLG
$1.17B
| $7.81M | ﹤0.01% |
825,600
+343,400
| +71% | +$4.02M |
|
3920
PUT
Curtiss-Wright
CW
$25.8B
| $7.8M | ﹤0.01% |
10,300
+6,500
| +171% | +$4.76M |
|
3921
BancFirst
BANF
$3.89B
| $7.8M | ﹤0.01% |
70,196
+25,174
| +56% | +$2.82M |
|
|
KDK
3922
CALL
Kodiak AI
KDK
$835M
| $7.8M | ﹤0.01% |
1,535,600
+485,800
| +46% | +$3.63M |
|
3923
Teekay
TK
$1.09B
| $7.8M | ﹤0.01% |
779,519
-114,051
| -13% | -$1.43M |
|
3924
CALL
Harley-Davidson
HOG
$2.89B
| $7.79M | ﹤0.01% |
318,300
+35,900
| +13% | +$863K |
|
3925
PUT
Jazz Pharmaceuticals
JAZZ
$15.9B
| $7.78M | ﹤0.01% |
32,300
-27,800
| -46% | -$6.09M |
|
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Ken Griffin's Q2 2026 Portfolio in Review
As of Q2 2026, Ken Griffin held 15,447 positions worth $875B, up 41% from $618B the previous quarter. Its ten largest holdings account for 23% of the portfolio.
Ken Griffin deployed $103B of net new capital in Q2 2026, opening 2,575 new positions and adding to 6,089 existing holdings. Its largest new stake was SpaceX: 5,129,884 shares worth $876M.
By sector, the portfolio is most concentrated in Technology at 3.9% of assets, down from 4.5% a quarter earlier, followed by Healthcare and Industrials.
On the sell side, the largest reduction was Micron Technology, an estimated $3B trimmed.
- Ken Griffin's largest Q2 2026 buy was SpaceX: 5,129,884 shares worth $876M.
- Ken Griffin added most to iShares Core S&P 500 ETF in Q2 2026, an estimated $9.91B increase.
- Ken Griffin's biggest Q2 2026 reduction was Micron Technology, cutting an estimated $3B.
- Ken Griffin fully exited iShares 7-10 Year Treasury Bond ETF in Q2 2026, selling an estimated $325M.
- Ken Griffin's ten largest holdings make up 23% of its $875B portfolio in Q2 2026.
- Ken Griffin opened 2,575 new positions and closed 1,872 in Q2 2026.
- Ken Griffin's portfolio value rose 41% quarter-over-quarter to $875B.
Based on Citadel Advisors's 13F filing for Q2 2026, filed 14 Aug 2026.