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 | |
|---|---|---|---|---|---|---|
3151
Stride
LRN
$3.46B
| $12.8M | ﹤0.01% |
148,716
-2,506
| -2% | -$230K |
|
3152
PUT
Alnylam Pharmaceuticals
ALNY
$30.6B
| $12.8M | ﹤0.01% |
42,500
+5,300
| +14% | +$1.6M |
|
3153
Warrior Met Coal
HCC
$5.19B
| $12.8M | ﹤0.01% |
157,628
-370,295
| -70% | -$33.5M |
|
3154
Kymera Therapeutics
KYMR
$9.76B
| $12.8M | ﹤0.01% |
111,555
-7,042
| -6% | -$605K |
|
3155
Watsco Inc
WSO
$12.9B
| $12.8M | ﹤0.01% |
30,681
+13,904
| +83% | +$5.59M |
|
3156
Synchrony
SYF
$26.4B
| $12.8M | ﹤0.01% |
167,889
-280,878
| -63% | -$20.6M |
|
3157
CALL
Royalty Pharma
RPRX
$26.1B
| $12.8M | ﹤0.01% |
227,700
+10,400
| +5% | +$541K |
|
|
SW
3158
CALL
Smurfit Westrock
SW
$25.8B
| $12.7M | ﹤0.01% |
275,600
+210,200
| +321% | +$8.68M |
|
|
AVGX
3159
Defiance Daily Target 2X Long AVGO ETF
AVGX
$190M
| $12.7M | ﹤0.01% |
+272,391
| New | +$15.3M |
|
|
SA
3160
CALL
Seabridge Gold
SA
$3.62B
| $12.7M | ﹤0.01% |
494,700
+192,100
| +63% | +$5.78M |
|
3161
Rallybio
RLYB
$90.2M
| $12.7M | ﹤0.01% |
7,705,787
+7,685,901
| +38,650% | +$98.9M |
|
3162
AMERISAFE
AMSF
$513M
| $12.7M | ﹤0.01% |
376,251
+87,169
| +30% | +$2.76M |
|
|
VOYG
3163
CALL
Voyager Technologies
VOYG
$2.6B
| $12.7M | ﹤0.01% |
394,200
+219,200
| +125% | +$7.59M |
|
3164
iShares MSCI USA Value Factor ETF
VLUE
$9.78B
| $12.7M | ﹤0.01% |
+63,608
| New | +$11.4M |
|
3165
CALL
ZIM Integrated Shipping Services
ZIM
$3.39B
| $12.7M | ﹤0.01% |
488,500
+19,000
| +4% | +$490K |
|
3166
PUT
ProShares UltraPro Short Dow 30
SDOW
$186M
| $12.7M | ﹤0.01% |
525,275
+8,100
| +2% | +$229K |
|
3167
CALL
Impinj
PI
$5.28B
| $12.7M | ﹤0.01% |
88,600
+11,700
| +15% | +$1.53M |
|
3168
Simpson Manufacturing
SSD
$7.94B
| $12.7M | ﹤0.01% |
60,601
+37,878
| +167% | +$7.09M |
|
3169
CALL
XPeng
XPEV
$11.2B
| $12.7M | ﹤0.01% |
957,400
-913,300
| -49% | -$14.5M |
|
3170
PUT
Trip.com Group
TCOM
$28.3B
| $12.7M | ﹤0.01% |
318,100
+30,100
| +10% | +$1.49M |
|
3171
PUT
Bunge Global
BG
$21.8B
| $12.7M | ﹤0.01% |
118,600
-300
| -0.3% | -$36.9K |
|
|
BELFB
3172
CALL
Bel Fuse Inc Class B
BELFB
$4.19B
| $12.7M | ﹤0.01% |
38,000
+9,000
| +31% | +$2.43M |
|
|
HMH
3173
HMH Holding Inc
HMH
$898M
| $12.6M | ﹤0.01% |
+673,656
| New | +$13.8M |
|
3174
CALL
Texas Roadhouse
TXRH
$13.6B
| $12.6M | ﹤0.01% |
65,300
+30,000
| +85% | +$5.11M |
|
3175
Mineralys Therapeutics
MLYS
$2.27B
| $12.6M | ﹤0.01% |
467,598
-132,443
| -22% | -$3.63M |
|
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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.