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 | |
|---|---|---|---|---|---|---|
1876
Equity Residential
EQR
$24.8B
| $29.1M | ﹤0.01% |
491,504
+1,433
| +0.3% | +$88.4K |
|
1877
PUT
Brookfield Asset Management
BAM
$87B
| $29M | ﹤0.01% |
653,400
+601,800
| +1,166% | +$29.4M |
|
1878
CALL
Red Cat Holdings
RCAT
$1.68B
| $29M | ﹤0.01% |
2,217,500
+1,256,100
| +131% | +$17.2M |
|
1879
PUT
Canadian Natural Resources
CNQ
$99.6B
| $28.9M | ﹤0.01% |
593,500
-249,500
| -30% | -$10.3M |
|
1880
PUT
Floor & Decor
FND
$6.23B
| $28.9M | ﹤0.01% |
568,900
+95,500
| +20% | +$6.21M |
|
1881
PUT
XPeng
XPEV
$11.2B
| $28.9M | ﹤0.01% |
1,686,800
-179,900
| -10% | -$3.34M |
|
1882
HubSpot
HUBS
$11.5B
| $28.9M | ﹤0.01% |
118,213
-56,247
| -32% | -$15.8M |
|
1883
Zymeworks
ZYME
$1.77B
| $28.8M | ﹤0.01% |
1,150,018
+894,667
| +350% | +$21.2M |
|
1884
Itron
ITRI
$4.47B
| $28.8M | ﹤0.01% |
321,017
+108,253
| +51% | +$10.4M |
|
1885
Arcus Biosciences
RCUS
$3.63B
| $28.7M | ﹤0.01% |
1,329,935
+1,225,234
| +1,170% | +$26.5M |
|
1886
CALL
YPF Sociedad Anonima American Depositary Shares (Each representing ten (10) Class D shares of Capital Stock)
YPF
$19.6B
| $28.7M | ﹤0.01% |
621,400
+199,700
| +47% | +$7.56M |
|
1887
PUT
ProShares Ultra VIX Short-Term Futures ETF
UVXY
$275M
| $28.7M | ﹤0.01% |
548,600
+271,400
| +98% | +$11.3M |
|
1888
PUT
Coeur Mining
CDE
$19.4B
| $28.7M | ﹤0.01% |
1,526,440
-201,020
| -12% | -$4.38M |
|
1889
Birkenstock
BIRK
$7.29B
| $28.6M | ﹤0.01% |
799,375
+605,952
| +313% | +$23.6M |
|
1890
CALL
CACI
CACI
$14.7B
| $28.6M | ﹤0.01% |
52,500
+44,700
| +573% | +$26.9M |
|
|
CMBT
1891
CMB.TECH NV
CMBT
$4.99B
| $28.5M | ﹤0.01% |
2,254,149
+1,436,742
| +176% | +$18M |
|
1892
Jefferies Financial Group
JEF
$12.7B
| $28.5M | ﹤0.01% |
690,855
-777,518
| -53% | -$40.4M |
|
1893
Roblox
RBLX
$27.7B
| $28.5M | ﹤0.01% |
503,739
-1,256,612
| -71% | -$84.4M |
|
1894
PUT
Galicia Financial Group
GGAL
$7.07B
| $28.5M | ﹤0.01% |
609,800
+396,100
| +185% | +$19.2M |
|
1895
iShares US Real Estate ETF
IYR
$4.59B
| $28.4M | ﹤0.01% |
300,815
-190,692
| -39% | -$18.5M |
|
1896
CALL
Digital Realty Trust
DLR
$73.9B
| $28.4M | ﹤0.01% |
157,800
-192,800
| -55% | -$33M |
|
1897
CALL
Sarepta Therapeutics
SRPT
$1.87B
| $28.4M | ﹤0.01% |
1,304,700
+799,600
| +158% | +$15.5M |
|
1898
Zillow
Z
$7.85B
| $28.4M | ﹤0.01% |
685,279
+474,375
| +225% | +$25.2M |
|
|
KLAR
1899
PUT
Klarna Group
KLAR
$7.88B
| $28.3M | ﹤0.01% |
2,159,100
+1,959,500
| +982% | +$38.8M |
|
1900
Jack Henry & Associates
JKHY
$10.9B
| $28.2M | ﹤0.01% |
178,526
-1,421,134
| -89% | -$243M |
|
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.