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 | |
|---|---|---|---|---|---|---|
12001
PUT
Rezolute
RZLT
$443M
| $96.4K | ﹤0.01% |
31,600
-11,600
| -27% | -$34.8K |
|
12002
Sono-Tek
SOTK
$81.1M
| $96.1K | ﹤0.01% |
23,663
+3,633
| +18% | +$15K |
|
|
CNTB
12003
PUT
Connect Biopharma Holdings
CNTB
$160M
| $95.9K | ﹤0.01% |
+36,600
| New | +$95.4K |
|
12004
CALL
Grove Collaborative
GROV
$44M
| $95.9K | ﹤0.01% |
+74,900
| New | +$102K |
|
12005
Kiora Pharmaceuticals
KPRX
$11.5M
| $95.6K | ﹤0.01% |
49,533
+27,152
| +121% | +$57.3K |
|
12006
CALL
Cerus
CERS
$572M
| $95.2K | ﹤0.01% |
52,300
-22,100
| -30% | -$48.2K |
|
12007
CALL
Stagwell
STGW
$2.28B
| $95K | ﹤0.01% |
+15,100
| New | +$84.4K |
|
12008
CALL
Voyager Therapeutics
VYGR
$198M
| $95K | ﹤0.01% |
24,600
-1,600
| -6% | -$6.3K |
|
12009
PUT
Protalix BioTherapeutics
PLX
$190M
| $94.8K | ﹤0.01% |
43,700
+16,100
| +58% | +$40K |
|
12010
Avita Medical
RCEL
$248M
| $94.8K | ﹤0.01% |
25,624
+5,434
| +27% | +$22.8K |
|
|
QUBX
12011
CALL
Tradr 2X Long QUBT Daily ETF
QUBX
$27.4M
| $94.7K | ﹤0.01% |
12,620
-14,940
| -54% | -$244K |
|
|
GRFS
12012
CALL
Grifois
GRFS
$5.4B
| $94.6K | ﹤0.01% |
+11,800
| New | +$104K |
|
|
FLNT
12013
Fluent
FLNT
$132M
| $94.6K | ﹤0.01% |
+29,929
| New | +$100K |
|
12014
Aware
AWRE
$26.4M
| $94.5K | ﹤0.01% |
75,560
+34,640
| +85% | +$57.7K |
|
12015
PUT
Direxion Daily S&P Oil & Gas Exp. & Prod. Bear 2X ETF
DRIP
$101M
| $94.4K | ﹤0.01% |
2,280
-4,690
| -67% | -$305K |
|
|
COYY
12016
CALL
GraniteShares YieldBOOST COIN ETF
COYY
$18.7M
| $94.2K | ﹤0.01% |
3,667
+1,734
| +90% | +$57.9K |
|
12017
CALL
Cosmos Holdings
COSM
$12.8M
| $94K | ﹤0.01% |
296,300
+280,700
| +1,799% | +$118K |
|
12018
CALL
KORU Medical Systems
KRMD
$154M
| $93.7K | ﹤0.01% |
21,700
+10,000
| +85% | +$49.6K |
|
12019
PUT
Santander
BSBR
$43.2B
| $93.7K | ﹤0.01% |
+15,800
| New | +$101K |
|
12020
CALL
Quanterix
QTRX
$135M
| $93.6K | ﹤0.01% |
+26,600
| New | +$155K |
|
|
POM
12021
Pomdoctor Ltd
POM
$7.6M
| $93.6K | ﹤0.01% |
+20,256
| New | +$104K |
|
12022
PUT
Oportun Financial
OPRT
$351M
| $93.6K | ﹤0.01% |
+20,300
| New | +$103K |
|
|
AIFC
12023
PUT
AI Financial Corp
AIFC
$58.9M
| $93.4K | ﹤0.01% |
84,100
-56,500
| -40% | -$92K |
|
12024
CALL
PennantPark Floating Rate Capital
PFLT
$752M
| $93.3K | ﹤0.01% |
+11,600
| New | +$102K |
|
12025
Natural Health Trends
NHTC
$15.4M
| $93.2K | ﹤0.01% |
33,414
-27,457
| -45% | -$91.8K |
|
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.