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 | |
|---|---|---|---|---|---|---|
2051
MoonLake Immunotherapeutics
MLTX
$1.41B
| $24.7M | ﹤0.01% |
1,323,728
+942,838
| +248% | +$15.6M |
|
2052
JD.com
JD
$39.1B
| $24.7M | ﹤0.01% |
834,210
-1,953,150
| -70% | -$55.2M |
|
2053
Piper Sandler
PIPR
$5.46B
| $24.6M | ﹤0.01% |
321,388
-865,692
| -73% | -$71M |
|
2054
CALL
Noble Corp
NE
$7.22B
| $24.6M | ﹤0.01% |
501,100
+83,700
| +20% | +$3.42M |
|
2055
EyePoint Inc
EYPT
$1.21B
| $24.6M | ﹤0.01% |
+1,905,875
| New | +$28.5M |
|
2056
CRISPR Therapeutics
CRSP
$5.14B
| $24.6M | ﹤0.01% |
516,352
+248,667
| +93% | +$13.1M |
|
2057
Humana
HUM
$46.5B
| $24.6M | ﹤0.01% |
141,650
+107,899
| +320% | +$22.1M |
|
2058
Wintrust Financial
WTFC
$11B
| $24.6M | ﹤0.01% |
176,736
+175,033
| +10,278% | +$25.4M |
|
2059
CALL
Caesars Entertainment
CZR
$6.04B
| $24.5M | ﹤0.01% |
928,800
-937,300
| -50% | -$22.3M |
|
2060
ZTO Express
ZTO
$17.4B
| $24.5M | ﹤0.01% |
974,629
+7,845
| +0.8% | +$184K |
|
2061
Lifestance Health
LFST
$4.82B
| $24.5M | ﹤0.01% |
3,850,026
+3,810,205
| +9,568% | +$26.5M |
|
2062
Kyndryl
KD
$2.89B
| $24.5M | ﹤0.01% |
1,868,464
+1,706,913
| +1,057% | +$30M |
|
|
HTO
2063
H2O America
HTO
$2.65B
| $24.4M | ﹤0.01% |
416,111
+350,034
| +530% | +$19.1M |
|
2064
CALL
NXP Semiconductors
NXPI
$58.6B
| $24.4M | ﹤0.01% |
123,800
-53,600
| -30% | -$11.9M |
|
|
WBI
2065
WaterBridge Infrastructure LLC
WBI
$1.49B
| $24.4M | ﹤0.01% |
909,651
+866,416
| +2,004% | +$20.6M |
|
2066
CALL
On Holding
ONON
$10.8B
| $24.4M | ﹤0.01% |
715,900
-542,900
| -43% | -$23.7M |
|
2067
CALL
Amprius Technologies
AMPX
$1.84B
| $24.3M | ﹤0.01% |
1,443,800
+697,500
| +93% | +$9.09M |
|
2068
PUT
Casey's General Stores
CASY
$31.6B
| $24.3M | ﹤0.01% |
33,400
-4,200
| -11% | -$2.74M |
|
2069
Steris
STE
$22.8B
| $24.3M | ﹤0.01% |
109,867
-206,401
| -65% | -$50.5M |
|
2070
CALL
Alexandria Real Estate Equities
ARE
$8.29B
| $24.3M | ﹤0.01% |
523,200
-57,000
| -10% | -$3.01M |
|
2071
PUT
Cadence Design Systems
CDNS
$89.9B
| $24.3M | ﹤0.01% |
87,400
-65,900
| -43% | -$19.7M |
|
2072
PUT
iShares MSCI Taiwan ETF
EWT
$11.5B
| $24.3M | ﹤0.01% |
342,200
+298,300
| +679% | +$21M |
|
|
2073
Amprius Technologies
AMPX
$1.84B
| $24.3M | ﹤0.01% |
1,438,660
+983,806
| +216% | +$12.8M |
|
2074
Cleveland-Cliffs
CLF
$6.78B
| $24.2M | ﹤0.01% |
2,868,827
+437,641
| +18% | +$5.01M |
|
2075
CALL
Global X Uranium ETF
URA
$6.27B
| $24.2M | ﹤0.01% |
500,000
-616,300
| -55% | -$32.1M |
|
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.