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 | |
|---|---|---|---|---|---|---|
|
DGNX
12426
PUT
Diginex Ltd
DGNX
$44.2M
| $41.6K | ﹤0.01% |
10,825
+6,637
| +158% | +$64.5K |
|
12427
American Shared Hospital Services
AMS
$10.6M
| $41.4K | ﹤0.01% |
+28,558
| New | +$59.8K |
|
12428
CALL
CPI Aerostructures
CVU
$75M
| $41.2K | ﹤0.01% |
10,500
-33,100
| -76% | -$137K |
|
12429
Empire Petroleum
EP
$111M
| $41.1K | ﹤0.01% |
13,886
-29,304
| -68% | -$90.1K |
|
|
AGEN
12430
PUT
Agenus
AGEN
$315M
| $41.1K | ﹤0.01% |
12,300
+1,400
| +13% | +$4.65K |
|
12431
Tiziana Life Sciences
TLSA
$132M
| $41.1K | ﹤0.01% |
+35,094
| New | +$49.7K |
|
12432
PUT
Arena Group
AREN
$56.7M
| $41K | ﹤0.01% |
18,900
-7,600
| -29% | -$25.3K |
|
12433
PUT
Eve Holding
EVEX
$976M
| $40.9K | ﹤0.01% |
16,500
-22,300
| -57% | -$76.1K |
|
12434
Bolt Biotherapeutics
BOLT
$6.17M
| $40.8K | ﹤0.01% |
+10,109
| New | +$52.6K |
|
12435
CALL
Clean Energy Fuels
CLNE
$395M
| $40.7K | ﹤0.01% |
16,400
-43,600
| -73% | -$102K |
|
12436
The ONE Group
STKS
$56.8M
| $40.7K | ﹤0.01% |
+22,842
| New | +$46.8K |
|
12437
PUT
Cumberland Pharmaceuticals
CPIX
$118M
| $40.6K | ﹤0.01% |
12,500
-16,500
| -57% | -$63.6K |
|
12438
PUT
FTC Solar
FTCI
$40.1M
| $40.4K | ﹤0.01% |
10,700
-700
| -6% | -$5.86K |
|
12439
CALL
Jasper Therapeutics
JSPR
$28.7M
| $40.4K | ﹤0.01% |
46,100
-2,100
| -4% | -$2.92K |
|
12440
Iveda Solutions
IVDA
$6.09M
| $40.4K | ﹤0.01% |
157,161
+118,965
| +311% | +$63.7K |
|
|
GRSD
12441
Grandstand Limited Ordinary Shares
GRSD
$67.3M
| $40.1K | ﹤0.01% |
10,344
-135,731
| -93% | -$609K |
|
12442
CALL
ProKidney
PROK
$289M
| $39.9K | ﹤0.01% |
22,300
-25,300
| -53% | -$53.7K |
|
|
GSRFR
12443
GSR IV Acquisition Corp Rights
GSRFR
| $39.7K | ﹤0.01% |
+16,279
| New | +$41.9K |
|
12444
Rackspace Technology
RXT
$1.1B
| $39.6K | ﹤0.01% |
40,406
+21,023
| +108% | +$25.6K |
|
|
BNBX
12445
DELISTED
BNB PLUS CORP
BNBX
| $39.6K | ﹤0.01% |
+61,840
| New | +$64.4K |
|
|
DJTU
12446
T-REX 2X Long DJT Daily Target ETF
DJTU
$8.91M
| $39.1K | ﹤0.01% |
2,399
-17,948
| -88% | -$511K |
|
|
EOSU
12447
PUT
T-REX 2X Long EOSE Daily Target ETF
EOSU
$8.23M
| $39.1K | ﹤0.01% |
+1,704
| New | +$412K |
|
|
EOSU
12448
T-REX 2X Long EOSE Daily Target ETF
EOSU
$8.23M
| $39.1K | ﹤0.01% |
+1,702
| New | +$412K |
|
12449
AmpliTech
AMPG
$152M
| $38.9K | ﹤0.01% |
+20,460
| New | +$60.4K |
|
12450
Mustang Bio
MBIO
$4.5M
| $38.7K | ﹤0.01% |
53,200
-31,565
| -37% | -$29.7K |
|
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.