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 | |
|---|---|---|---|---|---|---|
976
Alkermes
ALKS
$8.3B
| $79.3M | 0.01% |
2,241,584
+1,043,316
| +87% | +$32.4M |
|
977
Associated Banc-Corp
ASB
$6.07B
| $79.2M | 0.01% |
3,061,972
+32,339
| +1% | +$859K |
|
978
SiteOne Landscape Supply
SITE
$4.27B
| $79.2M | 0.01% |
594,728
+37,060
| +7% | +$5.24M |
|
979
Tenet Healthcare
THC
$21.5B
| $79M | 0.01% |
418,796
+383,553
| +1,088% | +$80.8M |
|
980
PUT
Duolingo
DUOL
$6.74B
| $78.9M | 0.01% |
800,500
+87,300
| +12% | +$10.8M |
|
981
CALL
Automatic Data Processing
ADP
$110B
| $78.6M | 0.01% |
386,800
+104,800
| +37% | +$24M |
|
982
Marvell Technology
MRVL
$199B
| $78.6M | 0.01% |
793,133
+212,971
| +37% | +$17.9M |
|
983
Warner Music
WMG
$13.3B
| $78.5M | 0.01% |
3,074,369
+680,510
| +28% | +$19.3M |
|
984
The Mosaic Company
MOS
$6.92B
| $78.2M | 0.01% |
3,068,066
+910,128
| +42% | +$25M |
|
985
Compass
COMP
$10.2B
| $78.1M | 0.01% |
10,685,017
+9,099,267
| +574% | +$95.6M |
|
986
United Rentals
URI
$69.7B
| $77.9M | 0.01% |
106,896
-33,780
| -24% | -$28.4M |
|
|
987
Automatic Data Processing
ADP
$110B
| $77.7M | 0.01% |
382,665
-713,119
| -65% | -$164M |
|
988
CALL
Direxion Daily Financial Bull 3x ETF
FAS
$2.5B
| $77.6M | 0.01% |
654,800
-151,700
| -19% | -$21.6M |
|
989
PUT
BP
BP
$110B
| $77.6M | 0.01% |
1,650,200
-692,100
| -30% | -$27.1M |
|
990
CALL
American Tower
AMT
$81.2B
| $77.5M | 0.01% |
449,200
-4,600
| -1% | -$828K |
|
991
Century Aluminum
CENX
$4.59B
| $77.5M | 0.01% |
1,320,867
+623,650
| +89% | +$31.3M |
|
992
CALL
ProShares Ultra VIX Short-Term Futures ETF
UVXY
$278M
| $77.5M | 0.01% |
1,481,640
+920,284
| +164% | +$38.3M |
|
993
Supernus Pharmaceuticals
SUPN
$2.74B
| $77.2M | 0.01% |
1,493,446
+1,040,487
| +230% | +$53M |
|
994
PUT
Applied Optoelectronics
AAOI
$11B
| $77.1M | 0.01% |
911,100
+522,600
| +135% | +$33.3M |
|
995
EQT Corp
EQT
$33.8B
| $76.9M | 0.01% |
1,208,693
-944,727
| -44% | -$55.4M |
|
996
iShares Core MSCI Emerging Markets ETF
IEMG
$159B
| $76.9M | 0.01% |
+1,102,212
| New | +$79.6M |
|
997
CALL
Williams Companies
WMB
$89.3B
| $76.9M | 0.01% |
1,056,300
+463,600
| +78% | +$32.1M |
|
998
CALL
Danaher
DHR
$143B
| $76.8M | 0.01% |
405,000
-326,800
| -45% | -$69.6M |
|
999
Essex Property Trust
ESS
$18.5B
| $76.7M | 0.01% |
316,864
+281,911
| +807% | +$71.1M |
|
1000
PUT
TeraWulf
WULF
$8.14B
| $76.7M | 0.01% |
5,313,500
-2,528,500
| -32% | -$37.5M |
|
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.