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 | |
|---|---|---|---|---|---|---|
4551
PUT
CoinShares ETF Trust CoinShares Bitcoin Mining ETF
WGMI
$244M
| $4.28M | ﹤0.01% |
123,000
+19,200
| +18% | +$808K |
|
4552
CALL
Green Plains
GPRE
$1.08B
| $4.28M | ﹤0.01% |
260,200
-937,600
| -78% | -$12.7M |
|
4553
Avantis All International Markets Value ETF
AVNV
$69.4M
| $4.28M | ﹤0.01% |
+54,522
| New | +$4.36M |
|
4554
TXO Partners LP
TXO
$777M
| $4.27M | ﹤0.01% |
339,665
+102,282
| +43% | +$1.23M |
|
4555
Customers Bancorp
CUBI
$2.82B
| $4.27M | ﹤0.01% |
61,535
-38,911
| -39% | -$2.83M |
|
4556
Vanguard International Dividend Appreciation ETF
VIGI
$9.29B
| $4.27M | ﹤0.01% |
+48,252
| New | +$4.45M |
|
4557
PUT
Direxion Daily MSFT Bull 2X ETF
MSFU
$772M
| $4.27M | ﹤0.01% |
185,500
+128,400
| +225% | +$3.91M |
|
4558
HNI Corp
HNI
$3.51B
| $4.27M | ﹤0.01% |
127,814
-196,069
| -61% | -$8.68M |
|
4559
iShares MSCI Turkey ETF
TUR
$221M
| $4.26M | ﹤0.01% |
+110,340
| New | +$4.35M |
|
|
OPTU
4560
Optimum Communications Inc
OPTU
$242M
| $4.26M | ﹤0.01% |
3,277,470
-21,256
| -0.6% | -$33.4K |
|
4561
CALL
Rambus
RMBS
$10.8B
| $4.26M | ﹤0.01% |
49,500
-138,700
| -74% | -$13.8M |
|
4562
PUT
Levi Strauss
LEVI
$8.6B
| $4.26M | ﹤0.01% |
230,300
-34,000
| -13% | -$697K |
|
|
STUB
4563
CALL
StubHub Holdings
STUB
$2.94B
| $4.26M | ﹤0.01% |
682,200
+304,100
| +80% | +$3.17M |
|
4564
PUT
Ecolab
ECL
$77.4B
| $4.26M | ﹤0.01% |
16,000
+4,500
| +39% | +$1.27M |
|
4565
Phathom Pharmaceuticals
PHAT
$759M
| $4.26M | ﹤0.01% |
383,058
+71,743
| +23% | +$906K |
|
|
UCTT
4566
CALL
Ultra Clean Holdings
UCTT
$3.91B
| $4.25M | ﹤0.01% |
68,400
+57,700
| +539% | +$2.96M |
|
4567
PUT
Banc of California
BANC
$3.11B
| $4.25M | ﹤0.01% |
241,600
+179,495
| +289% | +$3.43M |
|
4568
CALL
ARK 21Shares Bitcoin ETF
ARKB
$2.41B
| $4.25M | ﹤0.01% |
188,800
+85,900
| +83% | +$2.18M |
|
4569
Tennant Co
TNC
$1.17B
| $4.24M | ﹤0.01% |
63,853
+23,864
| +60% | +$1.73M |
|
4570
PUT
M&T Bank
MTB
$36.7B
| $4.24M | ﹤0.01% |
20,500
-2,400
| -10% | -$517K |
|
4571
PUT
RBC Bearings
RBC
$17.7B
| $4.24M | ﹤0.01% |
7,800
+6,300
| +420% | +$3.34M |
|
4572
PUT
Credit Acceptance
CACC
$6.09B
| $4.23M | ﹤0.01% |
10,000
+600
| +6% | +$283K |
|
4573
Ondas Inc
ONDS
$5.21B
| $4.23M | ﹤0.01% |
468,361
-8,190,559
| -95% | -$89.1M |
|
4574
Prothena Corp
PRTA
$459M
| $4.23M | ﹤0.01% |
435,574
-476,808
| -52% | -$4.37M |
|
|
MASI
4575
PUT
DELISTED
Masimo
MASI
| $4.23M | ﹤0.01% |
23,800
+20,700
| +668% | +$3.25M |
|
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.