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 | |
|---|---|---|---|---|---|---|
3601
CALL
Babcock & Wilcox
BW
$1.5B
| $7.7M | ﹤0.01% |
523,900
+275,100
| +111% | +$2.89M |
|
3602
CALL
West Pharmaceutical
WST
$24.5B
| $7.69M | ﹤0.01% |
30,700
+19,300
| +169% | +$4.8M |
|
3603
PUT
uniQure
QURE
$3.32B
| $7.69M | ﹤0.01% |
470,500
-12,700
| -3% | -$257K |
|
|
ARTY
3604
iShares Future AI & Tech ETF
ARTY
$4.07B
| $7.69M | ﹤0.01% |
+165,307
| New | +$8.3M |
|
3605
PUT
Amkor Technology
AMKR
$15B
| $7.69M | ﹤0.01% |
170,800
-74,000
| -30% | -$3.55M |
|
3606
Pegasystems
PEGA
$5.26B
| $7.68M | ﹤0.01% |
180,565
-56,537
| -24% | -$2.63M |
|
3607
Direxion Daily MSFT Bull 2X ETF
MSFU
$680M
| $7.68M | ﹤0.01% |
333,916
+321,073
| +2,500% | +$9.79M |
|
3608
CALL
Stride
LRN
$3.42B
| $7.68M | ﹤0.01% |
87,100
-58,700
| -40% | -$4.76M |
|
3609
CALL
QuantumScape Corp
QS
$3.78B
| $7.67M | ﹤0.01% |
1,202,400
-3,513,900
| -75% | -$29.2M |
|
3610
PUT
Archer Aviation
ACHR
$4.94B
| $7.67M | ﹤0.01% |
1,483,800
-686,500
| -32% | -$4.9M |
|
|
IMSR
3611
Terrestrial Energy
IMSR
$627M
| $7.67M | ﹤0.01% |
1,277,258
-751,950
| -37% | -$5.96M |
|
3612
Capital Group Core Balanced ETF
CGBL
$7.56B
| $7.66M | ﹤0.01% |
222,510
+55,052
| +33% | +$1.97M |
|
3613
Sprouts Farmers Market
SFM
$7.6B
| $7.65M | ﹤0.01% |
99,236
-2,143,919
| -96% | -$160M |
|
3614
Lyell Immunopharma
LYEL
$337M
| $7.65M | ﹤0.01% |
381,462
+56,761
| +17% | +$1.33M |
|
|
PR
3615
PUT
Permian Resources
PR
$18.1B
| $7.65M | ﹤0.01% |
358,900
-70,200
| -16% | -$1.21M |
|
3616
DNOW Inc
DNOW
$2.96B
| $7.65M | ﹤0.01% |
642,429
-1,101
| -0.2% | -$14.9K |
|
|
KLAR
3617
CALL
Klarna Group
KLAR
$7.67B
| $7.65M | ﹤0.01% |
584,500
+441,500
| +309% | +$8.74M |
|
3618
PUT
Madison Square Garden
MSGS
$9.79B
| $7.65M | ﹤0.01% |
23,800
-87,800
| -79% | -$26.2M |
|
3619
RLJ Lodging Trust
RLJ
$1.66B
| $7.65M | ﹤0.01% |
1,030,829
+214,118
| +26% | +$1.67M |
|
3620
PagSeguro Digital
PAGS
$2.41B
| $7.64M | ﹤0.01% |
762,225
+267,976
| +54% | +$2.79M |
|
3621
Neurocrine Biosciences
NBIX
$15.5B
| $7.64M | ﹤0.01% |
57,968
-21,743
| -27% | -$2.88M |
|
3622
Ormat Technologies
ORA
$7B
| $7.63M | ﹤0.01% |
68,198
-12,565
| -16% | -$1.46M |
|
|
PBOG
3623
Portfolio Building Block Integrated Oil and Gas and Exploration and Production Index ETF
PBOG
$458M
| $7.62M | ﹤0.01% |
215,069
+175,807
| +448% | +$5.27M |
|
3624
Autohome
ATHM
$2.64B
| $7.62M | ﹤0.01% |
438,773
+354,407
| +420% | +$7.28M |
|
3625
PUT
Xenon Pharmaceuticals
XENE
$5.94B
| $7.62M | ﹤0.01% |
131,000
+84,100
| +179% | +$3.87M |
|
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.