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 | |
|---|---|---|---|---|---|---|
12201
Loop Industries
LOOP
$30.6M
| $70.5K | ﹤0.01% |
49,275
-7,405
| -13% | -$9.28K |
|
|
FOCL
12202
PUT
EDAP TMS S.A.
FOCL
$174M
| $70.3K | ﹤0.01% |
+18,900
| New | +$77.9K |
|
12203
BioAtla
BCAB
$5.73M
| $70.1K | ﹤0.01% |
+8,714
| New | +$102K |
|
12204
CALL
Grid Dynamics Holdings
GDYN
$644M
| $70.1K | ﹤0.01% |
12,300
-17,300
| -58% | -$127K |
|
12205
PUT
Neumora Therapeutics
NMRA
$321M
| $70K | ﹤0.01% |
35,900
+23,500
| +190% | +$60.9K |
|
|
NNEX
12206
CALL
DELISTED
Tradr 2X Long NNE Daily ETF
NNEX
| $70K | ﹤0.01% |
+12,300
| New | +$141K |
|
12207
PUT
AMC Global Media
AMCX
$496M
| $69.9K | ﹤0.01% |
10,300
-3,500
| -25% | -$27.2K |
|
12208
CALL
Quantum-Si Incorporated
QSI
$172M
| $69.8K | ﹤0.01% |
90,200
-170,800
| -65% | -$177K |
|
|
YDKG
12209
Yueda Digital Holding
YDKG
$5.81M
| $69.5K | ﹤0.01% |
+72,152
| New | +$66.6K |
|
12210
CALL
James River Group Holdings
JRVR
$200M
| $69.3K | ﹤0.01% |
+11,000
| New | +$72.3K |
|
12211
PUT
Health Catalyst
HCAT
$132M
| $69K | ﹤0.01% |
+54,300
| New | +$102K |
|
12212
PUT
Opko Health
OPK
$1.04B
| $68.9K | ﹤0.01% |
60,400
-1,000
| -2% | -$1.23K |
|
|
HDSN
12213
CALL
Hudson Technologies
HDSN
$239M
| $68.8K | ﹤0.01% |
+11,700
| New | +$80.2K |
|
|
DHY
12214
Credit Suisse High Yield Credit Fund
DHY
$240M
| $68.8K | ﹤0.01% |
36,208
+16,257
| +81% | +$31.8K |
|
|
ILPT
12215
CALL
Industrial Logistics Properties Trust
ILPT
$611M
| $68.7K | ﹤0.01% |
+12,100
| New | +$70.4K |
|
12216
CALL
Castor Maritime
CTRM
$21.8M
| $68.6K | ﹤0.01% |
37,100
-80,600
| -68% | -$172K |
|
12217
PUT
Personalis
PSNL
$1.54B
| $68.2K | ﹤0.01% |
10,700
-8,300
| -44% | -$70.1K |
|
12218
CALL
Alector
ALEC
$228M
| $68.2K | ﹤0.01% |
31,700
-1,200
| -4% | -$2.41K |
|
|
BRNS
12219
Barinthus Biotherapeutics
BRNS
$24.5M
| $68.1K | ﹤0.01% |
118,996
+197
| +0.2% | +$130 |
|
12220
CALL
GrowGeneration
GRWG
$108M
| $68K | ﹤0.01% |
61,800
+27,600
| +81% | +$34.4K |
|
12221
CALL
Epsilon Energy
EPSN
$161M
| $67.8K | ﹤0.01% |
+11,000
| New | +$56.1K |
|
|
HELP
12222
CALL
Cybin Inc
HELP
$710M
| $67.7K | ﹤0.01% |
14,100
-29,400
| -68% | -$190K |
|
12223
Xcel Brands
XELB
$6.42M
| $67.4K | ﹤0.01% |
+43,513
| New | +$66.7K |
|
12224
CALL
Quad
QUAD
$506M
| $67.4K | ﹤0.01% |
10,200
-9,300
| -48% | -$60.1K |
|
|
GCDT
12225
Green Circle Decarbonize Technology Limited
GCDT
$6.6M
| $67.4K | ﹤0.01% |
+66,740
| New | +$204K |
|
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.