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 | |
|---|---|---|---|---|---|---|
11001
PUT
Precigen
PGEN
$2.46B
| $236K | ﹤0.01% |
61,100
+7,200
| +13% | +$29.5K |
|
11002
PUT
Wintrust Financial
WTFC
$10.9B
| $236K | ﹤0.01% |
+1,700
| New | +$246K |
|
11003
CALL
Solid Biosciences
SLDB
$949M
| $236K | ﹤0.01% |
32,800
+10,500
| +47% | +$67.5K |
|
|
QBTX
11004
PUT
Tradr 2X Long QBTS Daily ETF
QBTX
$86.1M
| $236K | ﹤0.01% |
29,800
-42,000
| -58% | -$874K |
|
11005
CALL
Avantor
AVTR
$9.31B
| $236K | ﹤0.01% |
30,100
-3,900
| -11% | -$38.4K |
|
11006
PUT
iShares Global Clean Energy ETF
ICLN
$2.09B
| $236K | ﹤0.01% |
12,900
-75,000
| -85% | -$1.37M |
|
|
TOPW
11007
PUT
Roundhill Top WeeklyPay ETF
TOPW
$147M
| $236K | ﹤0.01% |
7,100
-4,600
| -39% | -$173K |
|
|
GOOS
11008
PUT
Canada Goose Holdings
GOOS
$856M
| $236K | ﹤0.01% |
21,500
-42,200
| -66% | -$508K |
|
11009
PUT
Alto Ingredients
ALTO
$323M
| $236K | ﹤0.01% |
48,700
+9,600
| +25% | +$30.5K |
|
|
UDMY
11010
PUT
DELISTED
Udemy
UDMY
| $236K | ﹤0.01% |
51,000
-76,700
| -60% | -$378K |
|
11011
PUT
PagerDuty
PD
$915M
| $235K | ﹤0.01% |
37,900
-15,000
| -28% | -$130K |
|
11012
CALL
Manitowoc
MTW
$702M
| $235K | ﹤0.01% |
20,200
-16,000
| -44% | -$215K |
|
11013
Invesco PHLX Semiconductor ETF
SOXQ
$2.85B
| $235K | ﹤0.01% |
+3,937
| New | +$244K |
|
11014
RenovoRx
RNXT
$51.9M
| $235K | ﹤0.01% |
232,684
+179,276
| +336% | +$174K |
|
11015
PUT
East-West Bancorp
EWBC
$18.2B
| $235K | ﹤0.01% |
2,200
-3,500
| -61% | -$395K |
|
11016
Mercer International
MERC
$33.5M
| $235K | ﹤0.01% |
165,339
-20,546
| -11% | -$39.2K |
|
11017
Fidelity Hedged Equity ETF
FHEQ
$964M
| $235K | ﹤0.01% |
+7,977
| New | +$244K |
|
11018
CALL
Medallion Financial
MFIN
$253M
| $235K | ﹤0.01% |
27,400
-38,100
| -58% | -$375K |
|
|
KREF
11019
PUT
KKR Real Estate Finance Trust
KREF
$487M
| $234K | ﹤0.01% |
38,300
+18,500
| +93% | +$135K |
|
11020
Milestone Pharmaceuticals
MIST
$158M
| $234K | ﹤0.01% |
196,696
-156,536
| -44% | -$274K |
|
11021
MaxCyte
MXCT
$133M
| $234K | ﹤0.01% |
333,088
-1,155,730
| -78% | -$1.08M |
|
|
ASMG
11022
Leverage Shares 2X Long ASML Daily ETF
ASMG
$39.2M
| $234K | ﹤0.01% |
+7,380
| New | +$263K |
|
11023
Aztlan North America Nearshoring Stock Selection ETF
NRSH
$31.5M
| $234K | ﹤0.01% |
9,592
-103
| -1% | -$2.57K |
|
|
ISSB
11024
IncomeSTKd 1x US Stocks & 1x Bitcoin Premium ETF
ISSB
$1.71M
| $234K | ﹤0.01% |
+12,605
| New | +$259K |
|
11025
CALL
Kadant
KAI
$4B
| $234K | ﹤0.01% |
800
-500
| -38% | -$161K |
|
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.