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 | |
|---|---|---|---|---|---|---|
1601
CALL
Okta
OKTA
$26.9B
| $37.9M | 0.01% |
481,400
-269,700
| -36% | -$22.4M |
|
1602
Southwest Gas
SWX
$6.67B
| $37.9M | 0.01% |
435,739
+199,273
| +84% | +$17M |
|
1603
Apollo Global Management
APO
$81.9B
| $37.8M | 0.01% |
339,432
-17,000
| -5% | -$2.11M |
|
1604
Mid-America Apartment Communities
MAA
$15.4B
| $37.8M | 0.01% |
309,655
-836,919
| -73% | -$110M |
|
1605
CALL
STMicroelectronics
STM
$48.1B
| $37.7M | 0.01% |
1,091,500
+889,500
| +440% | +$27.8M |
|
1606
PUT
Zoom
ZM
$30.8B
| $37.7M | 0.01% |
469,000
-386,800
| -45% | -$32.4M |
|
1607
Opendoor
OPEN
$3.54B
| $37.6M | 0.01% |
8,043,697
+411,765
| +5% | +$2.22M |
|
1608
CALL
Banco Bilbao Vizcaya Argentaria
BBVA
$157B
| $37.6M | 0.01% |
1,737,600
+1,700,900
| +4,635% | +$39.4M |
|
1609
Broadridge
BR
$19.3B
| $37.6M | 0.01% |
231,581
-246,663
| -52% | -$46.9M |
|
1610
NiSource
NI
$20.1B
| $37.6M | 0.01% |
806,380
-1,680,000
| -68% | -$75.7M |
|
1611
CALL
Lyft
LYFT
$6.28B
| $37.6M | 0.01% |
2,827,700
-3,384,500
| -54% | -$52.4M |
|
1612
Regal Rexnord
RRX
$11.5B
| $37.6M | 0.01% |
+200,601
| New | +$37.3M |
|
1613
Babcock & Wilcox
BW
$1.39B
| $37.5M | 0.01% |
2,554,997
+1,697,490
| +198% | +$17.8M |
|
1614
CALL
Tapestry
TPR
$25.9B
| $37.4M | 0.01% |
265,100
-34,400
| -11% | -$4.88M |
|
1615
Tencent Music
TME
$14.2B
| $37.4M | 0.01% |
4,030,121
+3,584,812
| +805% | +$53M |
|
|
VSXY
1616
Victoria's Secret
VSXY
$7.39B
| $37.4M | 0.01% |
806,547
-741,396
| -48% | -$41.4M |
|
1617
Palomar
PLMR
$3.36B
| $37.4M | 0.01% |
312,732
+190,245
| +155% | +$23.7M |
|
1618
CALL
Cadence Design Systems
CDNS
$89B
| $37.3M | 0.01% |
134,300
-86,200
| -39% | -$25.7M |
|
1619
PUT
eBay
EBAY
$45.5B
| $37.3M | 0.01% |
409,800
-1,106,700
| -73% | -$99.4M |
|
|
BRSL
1620
Brightstar Lottery PLC
BRSL
$2.15B
| $37.3M | 0.01% |
2,927,058
+1,951,066
| +200% | +$26.9M |
|
1621
CALL
Toast
TOST
$19.7B
| $37.3M | 0.01% |
1,405,500
-461,100
| -25% | -$13.8M |
|
1622
PUT
AB InBev
BUD
$158B
| $37.2M | 0.01% |
536,200
-495,600
| -48% | -$35.8M |
|
1623
Kratos Defense & Security Solutions
KTOS
$11.8B
| $37.2M | 0.01% |
527,313
+270,812
| +106% | +$26M |
|
1624
CALL
O'Reilly Automotive
ORLY
$74.5B
| $37.1M | 0.01% |
402,400
+14,900
| +4% | +$1.4M |
|
1625
Equity Lifestyle Properties
ELS
$12.4B
| $37.1M | 0.01% |
594,915
+382,472
| +180% | +$24.8M |
|
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.