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 | |
|---|---|---|---|---|---|---|
5501
Artivion
AORT
$1.39B
| $2.6M | ﹤0.01% |
70,869
+43,990
| +164% | +$1.74M |
|
5502
PUT
KeyCorp
KEY
$24.6B
| $2.59M | ﹤0.01% |
129,300
-282,300
| -69% | -$5.91M |
|
5503
CALL
Wendy's
WEN
$1.65B
| $2.59M | ﹤0.01% |
372,700
+29,900
| +9% | +$230K |
|
5504
PUT
Procure Space ETF
UFO
$634M
| $2.59M | ﹤0.01% |
57,800
+49,700
| +614% | +$2.23M |
|
5505
PUT
Schwab US Large-Cap Growth ETF
SCHG
$63.2B
| $2.59M | ﹤0.01% |
88,900
+72,400
| +439% | +$2.25M |
|
5506
Fabrinet
FN
$20.3B
| $2.59M | ﹤0.01% |
4,963
-171,579
| -97% | -$87.2M |
|
5507
PUT
Curtiss-Wright
CW
$25.4B
| $2.59M | ﹤0.01% |
3,800
-1,700
| -31% | -$1.13M |
|
5508
Bank First Corp
BFC
$1.76B
| $2.59M | ﹤0.01% |
19,155
+6,874
| +56% | +$937K |
|
5509
PUT
Match Group
MTCH
$8.56B
| $2.59M | ﹤0.01% |
84,200
-66,500
| -44% | -$2.07M |
|
|
FEMR
5510
Fidelity Enhanced Emerging Markets ETF
FEMR
$173M
| $2.58M | ﹤0.01% |
+75,693
| New | +$2.69M |
|
5511
PUT
Watsco Inc
WSO
$12.9B
| $2.58M | ﹤0.01% |
7,100
-5,600
| -44% | -$2.17M |
|
5512
Repay Holdings
RPAY
$317M
| $2.58M | ﹤0.01% |
992,387
+107,601
| +12% | +$345K |
|
5513
US Treasury 6 Month Bill ETF
XBIL
$745M
| $2.58M | ﹤0.01% |
51,543
+35,371
| +219% | +$1.77M |
|
|
LAC
5514
PUT
Lithium Americas
LAC
$1.24B
| $2.58M | ﹤0.01% |
652,800
-481,200
| -42% | -$2.36M |
|
5515
CALL
Icon
ICLR
$12.9B
| $2.58M | ﹤0.01% |
23,300
-1,100
| -5% | -$150K |
|
|
PDS
5516
CALL
Precision Drilling
PDS
$1.06B
| $2.58M | ﹤0.01% |
+26,200
| New | +$2.24M |
|
5517
CALL
Virtu Financial
VIRT
$5.05B
| $2.58M | ﹤0.01% |
58,600
+23,200
| +66% | +$904K |
|
5518
PUT
Main Street Capital
MAIN
$5.54B
| $2.57M | ﹤0.01% |
48,600
+500
| +1% | +$29.6K |
|
5519
PUT
Bowman Consulting
BWMN
$731M
| $2.57M | ﹤0.01% |
+90,500
| New | +$2.95M |
|
5520
CALL
Affiliated Managers Group
AMG
$9.7B
| $2.57M | ﹤0.01% |
9,300
+7,800
| +520% | +$2.35M |
|
5521
CALL
Twist Bioscience
TWST
$7.86B
| $2.57M | ﹤0.01% |
54,100
+4,600
| +9% | +$206K |
|
5522
HEICO Corp
HEI
$51.9B
| $2.57M | ﹤0.01% |
9,370
-1,088
| -10% | -$350K |
|
5523
PUT
Canadian Imperial Bank of Commerce
CM
$112B
| $2.57M | ﹤0.01% |
27,100
-218,200
| -89% | -$20.9M |
|
5524
Dimensional World ex US Core Equity 2 ETF
DFAX
$12.5B
| $2.57M | ﹤0.01% |
75,566
-213,502
| -74% | -$7.43M |
|
5525
Diodes
DIOD
$4.48B
| $2.57M | ﹤0.01% |
37,605
+11,569
| +44% | +$730K |
|
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.