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 | |
|---|---|---|---|---|---|---|
12451
T Stamp
IDAI
$13.9M
| $38.7K | ﹤0.01% |
+16,200
| New | +$50.6K |
|
12452
BTC Digital
BTCT
$7.99M
| $38.6K | ﹤0.01% |
34,460
-47,678
| -58% | -$64.8K |
|
|
CISO
12453
CISO Global
CISO
$12.2M
| $38.5K | ﹤0.01% |
+111,481
| New | +$45.2K |
|
12454
CALL
Transact Technologies
TACT
$52.5M
| $38.5K | ﹤0.01% |
11,700
-8,900
| -43% | -$32K |
|
12455
CALL
KLX Energy Services
KLXE
$36M
| $38.5K | ﹤0.01% |
14,800
-80,800
| -85% | -$204K |
|
12456
Zevia
ZVIA
$101M
| $38.5K | ﹤0.01% |
32,874
-262,627
| -89% | -$417K |
|
12457
PUT
Lifecore Biomedical
LFCR
$179M
| $38.3K | ﹤0.01% |
+10,300
| New | +$71.1K |
|
12458
SkinHealth Systems
SKIN
$85.9M
| $38.3K | ﹤0.01% |
42,980
-69,251
| -62% | -$85K |
|
|
JUNS
12459
Jupiter Neurosciences
JUNS
$4.62M
| $38.2K | ﹤0.01% |
+1,355
| New | +$62.5K |
|
12460
Mobile Infrastructure Corp
BEEP
$100M
| $38.2K | ﹤0.01% |
17,059
-37,477
| -69% | -$105K |
|
|
OPTU
12461
CALL
Optimum Communications Inc
OPTU
$228M
| $38.1K | ﹤0.01% |
29,300
-95,200
| -76% | -$150K |
|
|
ZH
12462
PUT
Zhihu
ZH
$274M
| $38.1K | ﹤0.01% |
+13,400
| New | +$45.3K |
|
12463
CALL
Ribbon Communications
RBBN
$377M
| $37.7K | ﹤0.01% |
+17,800
| New | +$42.6K |
|
12464
Freight Technologies
FRGT
$1.24M
| $37.7K | ﹤0.01% |
+9,087
| New | +$59.8K |
|
|
SGRP
12465
DELISTED
SPAR Group
SGRP
| $37.6K | ﹤0.01% |
60,046
+24,519
| +69% | +$19.4K |
|
12466
PUT
Zedge
ZDGE
$38.9M
| $37.5K | ﹤0.01% |
12,800
-1,700
| -12% | -$5.49K |
|
12467
CALL
US Global Investors
GROW
$38.8M
| $37.4K | ﹤0.01% |
+15,100
| New | +$45.2K |
|
|
TUYA
12468
PUT
Tuya Inc
TUYA
$1.12B
| $37.4K | ﹤0.01% |
16,200
-59,000
| -78% | -$135K |
|
|
MMA
12469
Alta Global Group
MMA
$10.7M
| $37.4K | ﹤0.01% |
+82,459
| New | +$57.8K |
|
|
ATYR
12470
PUT
aTyr Pharma
ATYR
$54.2M
| $37.3K | ﹤0.01% |
47,800
-206,000
| -81% | -$174K |
|
|
ATYR
12471
aTyr Pharma
ATYR
$54.2M
| $37K | ﹤0.01% |
+47,372
| New | +$40K |
|
|
SBTU
12472
T-REX 2X Long SBET Daily Target ETF
SBTU
$3.35M
| $36.8K | ﹤0.01% |
+11,769
| New | +$69.7K |
|
|
SGMO
12473
CALL
DELISTED
SANGAMO THERAPEUTICS INC
SGMO
| $36.8K | ﹤0.01% |
148,900
-73,200
| -33% | -$29.1K |
|
12474
PUT
Skye Bioscience
SKYE
$19M
| $36.8K | ﹤0.01% |
59,800
+41,800
| +232% | +$34.1K |
|
12475
Curis
CRIS
$3.91M
| $36.7K | ﹤0.01% |
3,351
+989
| +42% | +$18.4K |
|
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.