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 | |
|---|---|---|---|---|---|---|
3876
American Public Education
APEI
$808M
| $6.52M | ﹤0.01% |
+114,630
| New | +$5.25M |
|
3877
Gulfport Energy Corp
GPOR
$2.97B
| $6.52M | ﹤0.01% |
30,802
+19,281
| +167% | +$3.83M |
|
3878
CALL
ProShares Ultra Bloomberg Natural Gas
BOIL
$355M
| $6.52M | ﹤0.01% |
202,100
-122,710
| -38% | -$4.9M |
|
|
SLN
3879
Silence Therapeutics
SLN
$656M
| $6.51M | ﹤0.01% |
1,234,807
+990,746
| +406% | +$5.45M |
|
3880
PUT
SoundHound AI
SOUN
$3.12B
| $6.51M | ﹤0.01% |
947,100
-446,600
| -32% | -$3.85M |
|
3881
PUT
Saia
SAIA
$10.4B
| $6.5M | ﹤0.01% |
18,500
+2,100
| +13% | +$766K |
|
3882
PUT
SSR Mining
SSRM
$6.7B
| $6.5M | ﹤0.01% |
221,000
-270,600
| -55% | -$7.18M |
|
3883
Westamerica Bancorp
WABC
$1.38B
| $6.5M | ﹤0.01% |
124,582
-85,818
| -41% | -$4.35M |
|
3884
Stanley Black & Decker
SWK
$15B
| $6.49M | ﹤0.01% |
91,320
-127,058
| -58% | -$10.2M |
|
|
NBSD
3885
Neuberger Short Duration Income ETF
NBSD
$1.26B
| $6.49M | ﹤0.01% |
127,924
+97,835
| +325% | +$5M |
|
|
EH
3886
CALL
EHang Holdings
EH
$435M
| $6.49M | ﹤0.01% |
668,000
-118,800
| -15% | -$1.46M |
|
3887
Capital Group Global Growth Equity ETF
CGGO
$12.1B
| $6.48M | ﹤0.01% |
+194,298
| New | +$6.92M |
|
3888
PUT
Ouster
OUST
$3.5B
| $6.48M | ﹤0.01% |
352,500
-81,600
| -19% | -$1.78M |
|
3889
Corvus Pharmaceuticals
CRVS
$1.26B
| $6.47M | ﹤0.01% |
442,522
+234,340
| +113% | +$3.74M |
|
3890
Arlo Technologies
ARLO
$1.49B
| $6.47M | ﹤0.01% |
454,548
-119,108
| -21% | -$1.59M |
|
3891
Northwest Bancshares
NWBI
$2.29B
| $6.47M | ﹤0.01% |
509,504
+157,308
| +45% | +$1.98M |
|
|
3892
CALL
Saia
SAIA
$10.4B
| $6.46M | ﹤0.01% |
18,400
+2,100
| +13% | +$766K |
|
3893
PUT
Logitech
LOGI
$14.6B
| $6.46M | ﹤0.01% |
70,900
-115,700
| -62% | -$10.7M |
|
3894
CALL
Tilray
TLRY
$625M
| $6.46M | ﹤0.01% |
998,340
-584,500
| -37% | -$4.56M |
|
3895
CALL
BorgWarner
BWA
$14.4B
| $6.46M | ﹤0.01% |
119,000
+35,400
| +42% | +$1.87M |
|
3896
Tonix Pharmaceuticals
TNXP
$208M
| $6.44M | ﹤0.01% |
+468,712
| New | +$7.22M |
|
|
BELFB
3897
Bel Fuse Inc Class B
BELFB
$4.31B
| $6.44M | ﹤0.01% |
32,527
+28,580
| +724% | +$5.97M |
|
3898
Astronics
ATRO
$4.57B
| $6.43M | ﹤0.01% |
115,709
-263,251
| -69% | -$15.9M |
|
|
MESO
3899
CALL
Mesoblast
MESO
$2.23B
| $6.43M | ﹤0.01% |
418,300
-49,800
| -11% | -$829K |
|
3900
Magna International
MGA
$19.1B
| $6.43M | ﹤0.01% |
115,243
+57,768
| +101% | +$3.3M |
|
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.