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 | |
|---|---|---|---|---|---|---|
12651
PUT
Invivyd
IVVD
$202M
| $17.3K | ﹤0.01% |
13,300
-35,700
| -73% | -$65.6K |
|
12652
CollPlant Biotechnologies
CLGN
$6.04M
| $17.2K | ﹤0.01% |
+32,165
| New | +$32.5K |
|
12653
PUT
Heron Therapeutics
HRTX
$63.5M
| $16.8K | ﹤0.01% |
21,000
-2,300
| -10% | -$2.67K |
|
12654
PUT
Outlook Therapeutics
OTLK
$166M
| $16.6K | ﹤0.01% |
80,800
-837,500
| -91% | -$362K |
|
12655
DSS Inc
DSS
$5.15M
| $16.1K | ﹤0.01% |
+19,443
| New | +$18.8K |
|
12656
CALL
Health Catalyst
HCAT
$132M
| $15.9K | ﹤0.01% |
+12,500
| New | +$23.5K |
|
|
TOUR
12657
PUT
Tuniu
TOUR
$55.4M
| $15.8K | ﹤0.01% |
2,050
-3,800
| -65% | -$25.9K |
|
12658
CALL
IT Tech Packaging
ITP
$2.91M
| $15.7K | ﹤0.01% |
86,500
+32,900
| +61% | +$6.75K |
|
12659
CALL
Hyperfine
HYPR
$95.5M
| $15.7K | ﹤0.01% |
14,500
-15,600
| -52% | -$17.7K |
|
|
KBSX
12660
FST Corp
KBSX
$38.9M
| $15.7K | ﹤0.01% |
+11,685
| New | +$14.9K |
|
|
PFSA
12661
Profusa Inc
PFSA
$504K
| $15.6K | ﹤0.01% |
+1,234
| New | +$111K |
|
12662
CALL
CXApp
CXAI
$19.2M
| $15.6K | ﹤0.01% |
86,500
+73,600
| +571% | +$18.3K |
|
|
HPAI
12663
Helport AI
HPAI
$17.9M
| $15.5K | ﹤0.01% |
+10,359
| New | +$31K |
|
|
RDHL
12664
Redhill Biopharma
RDHL
$3.59M
| $15.4K | ﹤0.01% |
20,673
+5,196
| +34% | +$5.48K |
|
|
BBBY.WS
12665
Bed Bath & Beyond Warrants
BBBY.WS
| $15.3K | ﹤0.01% |
27,187
-5,688
| -17% | -$4.04K |
|
|
ONCY
12666
Oncolytics Biotech
ONCY
$98.3M
| $15.2K | ﹤0.01% |
+17,938
| New | +$17.8K |
|
|
STKE
12667
Sol Strategies Inc
STKE
$41.1M
| $15.2K | ﹤0.01% |
15,421
-53,290
| -78% | -$83.4K |
|
|
SUIG
12668
PUT
Sui Group Holdings
SUIG
$68.9M
| $14.5K | ﹤0.01% |
12,000
-45,700
| -79% | -$67.7K |
|
|
ACCL
12669
Acco Group Holdings
ACCL
$39.8M
| $14.3K | ﹤0.01% |
10,662
-14,849
| -58% | -$25.8K |
|
|
ABVE
12670
PUT
DELISTED
Above Food Ingredients Inc
ABVE
| $14.2K | ﹤0.01% |
+14,100
| New | +$22.5K |
|
12671
CALL
INmune Bio
INMB
$56.6M
| $14.1K | ﹤0.01% |
12,500
-33,200
| -73% | -$47.3K |
|
12672
CALL
Vivani Medical
VANI
$118M
| $14.1K | ﹤0.01% |
14,100
-30,700
| -69% | -$38.4K |
|
12673
TDH Holdings
PETZ
$15.5M
| $14.1K | ﹤0.01% |
11,732
-37,991
| -76% | -$42.5K |
|
12674
CALL
Quince Therapeutics
QNCX
$31.8M
| $13.6K | ﹤0.01% |
670
+515
| +332% | +$103K |
|
12675
Cenntro
CENN
$8.53M
| $13.5K | ﹤0.01% |
+1,882
| New | +$14.8K |
|
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.