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
|
+$9.9B |
| 2 |
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 |
Sandisk
SNDK
|
+$771M |
Sector Composition
| Rank | Sector | Weight |
|---|---|---|
| 1 | Miscellaneous | 82.67% |
| 2 | Technology | 3.92% |
| 3 | Healthcare | 2.55% |
| 4 | Industrials | 2.26% |
| 5 | Financials | 2.13% |
| Name | Market Value | Portfolio Weight | Shares or Principal |
Change in Stake | Capital Flow | Held Since | |
|---|---|---|---|---|---|---|---|
126
PUT
iShares Semiconductor ETF
SOXX
$42B
| $1.02B | 0.12% |
4,764,900
+3,636,600
| +322% | +$615M |
2017 Q2
36 quarters
|
|
127
CALL
Mercado Libre
MELI
$75.1B
| $1B | 0.11% |
590,600
+173,000
| +41% | +$295M |
2013 Q2
52 quarters
|
|
128
PUT
Berkshire Hathaway Class B
BRK.B
$1.26T
| $987M | 0.11% |
1,973,000
+662,800
| +51% | +$319M |
2013 Q2
52 quarters
|
|
129
PUT
Qualcomm
QCOM
$182B
| $982M | 0.11% |
5,312,600
+2,291,400
| +76% | +$428M |
2013 Q2
52 quarters
|
|
130
CALL
Lumentum
LITE
$52.8B
| $974M | 0.11% |
1,134,800
-107,000
| -9% | -$95.4M |
2016 Q3
39 quarters
|
|
|
131
PUT
SpaceX
SPCX
$1.87T
| $973M | 0.11% |
+5,697,600
| New | +$968M |
2026 Q2
0 quarters
|
|
132
CALL
Alibaba
BABA
$234B
| $951M | 0.11% |
9,907,600
+2,298,500
| +30% | +$288M |
2016 Q2
40 quarters
|
|
133
CALL
Astera Labs
ALAB
$38B
| $951M | 0.11% |
1,968,700
+961,700
| +96% | +$255M |
2024 Q1
9 quarters
|
|
134
CALL
Johnson & Johnson
JNJ
$690B
| $933M | 0.11% |
3,673,700
-64,500
| -2% | -$15M |
2013 Q2
52 quarters
|
|
|
135
PUT
Astera Labs
ALAB
$38B
| $931M | 0.11% |
1,927,200
+929,200
| +93% | +$247M |
2024 Q1
9 quarters
|
|
136
Advanced Micro Devices
AMD
$860B
| $929M | 0.11% |
1,599,430
+971,965
| +155% | +$398M |
2019 Q1
29 quarters
|
|
137
CALL
Visa
V
$794B
| $928M | 0.11% |
2,705,400
-398,800
| -13% | -$128M |
2013 Q2
52 quarters
|
|
138
CALL
Roundhill Memory ETF
DRAM
$19.4B
| $908M | 0.1% |
+12,293,300
| New | +$640M |
2026 Q2
0 quarters
|
|
139
CALL
Adobe
ADBE
$93.7B
| $908M | 0.1% |
4,427,800
+1,619,300
| +58% | +$384M |
2013 Q2
52 quarters
|
|
140
CALL
IBM
IBM
$233B
| $901M | 0.1% |
3,204,600
+1,044,700
| +48% | +$263M |
2013 Q2
52 quarters
|
|
141
Alphabet (Google) Class C
GOOG
$3.58T
| $899M | 0.1% |
2,545,533
+141,463
| +6% | +$50.6M |
2021 Q3
19 quarters
|
|
142
CALL
Cisco
CSCO
$378B
| $899M | 0.1% |
7,656,200
+3,733,700
| +95% | +$390M |
2013 Q2
52 quarters
|
|
143
PUT
Corning
GLW
$96.1B
| $893M | 0.1% |
3,496,300
+1,689,200
| +93% | +$307M |
2013 Q2
52 quarters
|
|
144
PUT
ExxonMobil
XOM
$692B
| $888M | 0.1% |
6,492,700
+563,700
| +10% | +$84.4M |
2013 Q2
52 quarters
|
|
145
CALL
Walmart Inc
WMT
$1.01T
| $878M | 0.1% |
7,755,500
-1,571,500
| -17% | -$195M |
2013 Q2
52 quarters
|
|
|
146
SpaceX
SPCX
$1.87T
| $876M | 0.1% |
+5,129,884
| New | +$871M |
2026 Q2
0 quarters
|
|
|
147
CALL
Qualcomm
QCOM
$182B
| $868M | 0.1% |
4,696,000
+1,448,500
| +45% | +$271M |
2013 Q2
52 quarters
|
|
148
CALL
Coinbase
COIN
$33.6B
| $865M | 0.1% |
5,914,500
+1,017,000
| +21% | +$184M |
2021 Q2
20 quarters
|
|
149
PUT
State Street Consumer Discretionary Select Sector SPDR ETF
XLY
$23.4B
| $858M | 0.1% |
7,313,400
+4,341,700
| +146% | +$507M |
2014 Q1
49 quarters
|
|
|
150
PUT
Coinbase
COIN
$33.6B
| $854M | 0.1% |
5,842,500
+637,700
| +12% | +$115M |
2021 Q2
20 quarters
|
|
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Ken Griffin's Q2 2026 Portfolio in Review
As of Q2 2026, Ken Griffin held 15,445 positions worth $875B, up 41% from $618B the previous quarter. Its ten largest holdings account for 23% of the portfolio.
Ken Griffin's Q2 2026 filing shows 2,573 new, 6,088 increased, 4,803 reduced and 1,873 closed positions. Its largest new stake was SpaceX: 5,129,884 shares worth $876M. The largest sale was Micron Technology, an estimated $3B.
By sector, the portfolio is most concentrated in Miscellaneous at 83% of assets, up from 79% a quarter earlier, followed by Technology and Healthcare.
- 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 $9.9B 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 2,573 new positions and closed 1,873 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.