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
|
+$2.72B |
| 2 |
Meta Platforms (Facebook)
META
|
+$660M |
| 3 |
Micron Technology
MU
|
+$605M |
| 4 |
Mastercard
MA
|
+$497M |
| 5 |
Tesla
TSLA
|
+$495M |
Top Sells
| Rank | Stock | Value |
|---|---|---|
| 1 |
Amazon
AMZN
|
+$1.33B |
| 2 |
Visa
V
|
+$1.26B |
| 3 |
State Street SPDR S&P 500 ETF Trust
SPY
|
+$1.23B |
| 4 |
Lam Research
LRCX
|
+$699M |
| 5 |
State Street SPDR Dow Jones Industrial Average ETF Trust
DIA
|
+$681M |
Sector Composition
| Rank | Sector | Weight |
|---|---|---|
| 1 | Technology | 4.49% |
| 2 | Healthcare | 2.99% |
| 3 | Financials | 2.85% |
| 4 | Industrials | 2.56% |
| 5 | Consumer Discretionary | 2.23% |
| Name | Market Value | Portfolio Weight | Shares or Principal |
Change in Stake | Capital Flow | |
|---|---|---|---|---|---|---|
126
Alphabet (Google) Class C
GOOG
$4.19T
| $690M | 0.11% |
2,404,070
+91,862
| +4% | +$28.9M |
|
127
CALL
Adobe
ADBE
$105B
| $683M | 0.11% |
2,808,500
+292,900
| +12% | +$81.1M |
|
128
Blackrock
BLK
$178B
| $676M | 0.11% |
703,107
+299,288
| +74% | +$315M |
|
129
PUT
Lumentum
LITE
$63.8B
| $674M | 0.11% |
958,900
+466,400
| +95% | +$256M |
|
130
CALL
Merck
MRK
$322B
| $668M | 0.11% |
5,551,800
+2,173,900
| +64% | +$251M |
|
|
131
CALL
Lam Research
LRCX
$390B
| $665M | 0.11% |
3,111,100
-1,141,800
| -27% | -$255M |
|
132
PUT
CrowdStrike
CRWD
$226B
| $658M | 0.11% |
6,744,400
-2,229,200
| -25% | -$236M |
|
133
PUT
Carvana
CVNA
$79.2B
| $658M | 0.11% |
10,464,000
-3,122,000
| -23% | -$232M |
|
134
PUT
Applovin
APP
$107B
| $650M | 0.11% |
1,633,300
+121,900
| +8% | +$58.9M |
|
135
CALL
Applied Materials
AMAT
$417B
| $637M | 0.1% |
1,864,800
-92,500
| -5% | -$31.1M |
|
136
CALL
Snowflake
SNOW
$116B
| $636M | 0.1% |
4,215,500
+363,700
| +9% | +$67.3M |
|
137
CALL
iShares MSCI EAFE ETF
EFA
$79.9B
| $629M | 0.1% |
6,470,800
+5,430,800
| +522% | +$543M |
|
138
PUT
Berkshire Hathaway Class B
BRK.B
$1.11T
| $628M | 0.1% |
1,310,200
+153,700
| +13% | +$75.5M |
|
139
Intuitive Surgical
ISRG
$142B
| $625M | 0.1% |
1,356,011
+315,444
| +30% | +$160M |
|
140
CALL
Vanguard S&P 500 ETF
VOO
$1.03T
| $618M | 0.1% |
1,034,500
+574,700
| +125% | +$359M |
|
141
PUT
Johnson & Johnson
JNJ
$626B
| $615M | 0.1% |
2,517,800
-51,900
| -2% | -$12.1M |
|
142
CALL
Reddit
RDDT
$30.1B
| $605M | 0.1% |
4,496,500
+31,900
| +0.7% | +$5.43M |
|
143
CALL
iShares China Large-Cap ETF
FXI
$4.25B
| $600M | 0.1% |
16,724,000
+9,491,500
| +131% | +$361M |
|
|
EA
144
DELISTED
Electronic Arts
EA
| $593M | 0.1% |
2,910,304
+1,949,559
| +203% | +$394M |
|
145
CALL
Vertiv
VRT
$108B
| $589M | 0.1% |
2,349,800
-855,900
| -27% | -$190M |
|
146
PUT
State Street Materials Select Sector SPDR ETF
XLB
$8.72B
| $582M | 0.09% |
11,641,800
+10,027,100
| +621% | +$503M |
|
147
PUT
Nike
NKE
$61.3B
| $581M | 0.09% |
11,006,800
+156,600
| +1% | +$9.5M |
|
148
Marriott International
MAR
$91.1B
| $573M | 0.09% |
1,751,159
+52,142
| +3% | +$17.1M |
|
|
149
Berkshire Hathaway Class B
BRK.B
$1.11T
| $572M | 0.09% |
1,193,500
+146,987
| +14% | +$72.2M |
|
|
CRWV
150
PUT
CoreWeave
CRWV
$49.3B
| $569M | 0.09% |
7,347,100
+2,264,700
| +45% | +$197M |
|
Similar funds
Ken Griffin's Q1 2026 Portfolio in Review
As of Q1 2026, Ken Griffin held 14,860 positions worth $618B, down 7.1% from $666B the previous quarter. Its ten largest holdings account for 22% of the portfolio.
Ken Griffin withdrew a net $19.5B in Q1 2026, closing 2,003 positions and reducing 5,286 holdings. Its most notable exit was CyberArk, an estimated $305M position sold in full.
By sector, the portfolio is most concentrated in Technology at 4.5% of assets, down from 4.9% a quarter earlier, followed by Healthcare and Financials.
Against the trend, Ken Griffin opened a new position in iShares 7-10 Year Treasury Bond ETF worth $327M.
- Ken Griffin's largest Q1 2026 buy was iShares 7-10 Year Treasury Bond ETF: 3,431,225 shares worth $327M.
- Ken Griffin added most to iShares Core S&P 500 ETF in Q1 2026, an estimated $2.72B increase.
- Ken Griffin's biggest Q1 2026 reduction was Amazon, cutting an estimated $1.33B.
- Ken Griffin fully exited CyberArk in Q1 2026, selling an estimated $305M.
- Ken Griffin's ten largest holdings make up 22% of its $618B portfolio in Q1 2026.
- Ken Griffin opened 2,347 new positions and closed 2,003 in Q1 2026.
- Ken Griffin's portfolio value fell 7.1% quarter-over-quarter to $618B.
Based on Citadel Advisors's 13F filing for Q1 2026, filed 15 May 2026.