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 | |
|---|---|---|---|---|---|---|
|
GRAL
6326
GRAIL Inc
GRAL
$3.37B
| $1.75M | ﹤0.01% |
33,894
-33,533
| -50% | -$2.6M |
|
6327
iShares US & Intl High Yield Corp Bond ETF
GHYG
$199M
| $1.75M | ﹤0.01% |
+38,810
| New | +$1.78M |
|
6328
CALL
Gentherm
THRM
$1.27B
| $1.75M | ﹤0.01% |
+63,000
| New | +$2.06M |
|
6329
First Trust Dow Jones Select MicroCap Index Fund
FDM
$269M
| $1.75M | ﹤0.01% |
21,318
+12,060
| +130% | +$1.01M |
|
|
BCYC
6330
Bicycle Therapeutics
BCYC
$288M
| $1.75M | ﹤0.01% |
377,085
+105,702
| +39% | +$604K |
|
6331
PUT
Indivior Pharmaceuticals
INDV
$4.54B
| $1.75M | ﹤0.01% |
57,400
+32,000
| +126% | +$1.06M |
|
6332
CALL
Aclaris Therapeutics
ACRS
$871M
| $1.75M | ﹤0.01% |
466,400
-672,000
| -59% | -$2.27M |
|
6333
Amplify Cybersecurity ETF
HACK
$3B
| $1.75M | ﹤0.01% |
+23,290
| New | +$1.8M |
|
6334
NETGEAR
NTGR
$648M
| $1.75M | ﹤0.01% |
80,071
+9,893
| +14% | +$213K |
|
6335
PUT
Xcel Energy
XEL
$48.5B
| $1.75M | ﹤0.01% |
22,000
-55,000
| -71% | -$4.31M |
|
6336
PUT
Magna International
MGA
$18.8B
| $1.75M | ﹤0.01% |
31,300
-38,300
| -55% | -$2.19M |
|
6337
CALL
Avista
AVA
$3.22B
| $1.75M | ﹤0.01% |
43,500
+28,100
| +182% | +$1.13M |
|
6338
Sinclair Inc
SBGI
$989M
| $1.74M | ﹤0.01% |
134,826
+58,709
| +77% | +$853K |
|
|
ONCHU
6339
1RT Acquisition Corp Units
ONCHU
$155M
| $1.74M | ﹤0.01% |
169,701
-6,929
| -4% | -$71.6K |
|
6340
CALL
Invesco Senior Loan ETF
BKLN
$6.75B
| $1.74M | ﹤0.01% |
85,400
+52,300
| +158% | +$1.08M |
|
6341
Limoneira
LMNR
$254M
| $1.74M | ﹤0.01% |
129,869
+107,916
| +492% | +$1.5M |
|
6342
CALL
Cerence
CRNC
$381M
| $1.74M | ﹤0.01% |
276,200
-70,300
| -20% | -$633K |
|
6343
PUT
Legend Biotech
LEGN
$4.22B
| $1.74M | ﹤0.01% |
96,300
+25,100
| +35% | +$479K |
|
6344
PUT
NiSource
NI
$20.1B
| $1.74M | ﹤0.01% |
37,300
-700
| -2% | -$31.5K |
|
6345
PUT
ProShares Short VIX Short-Term Futures ETF
SVXY
$231M
| $1.74M | ﹤0.01% |
38,000
+6,600
| +21% | +$342K |
|
6346
CALL
Alto Ingredients
ALTO
$323M
| $1.74M | ﹤0.01% |
359,400
+138,700
| +63% | +$440K |
|
6347
CALL
Arcus Biosciences
RCUS
$3.66B
| $1.74M | ﹤0.01% |
80,500
-14,100
| -15% | -$305K |
|
6348
Byline Bancorp
BY
$1.76B
| $1.74M | ﹤0.01% |
55,022
-8,043
| -13% | -$252K |
|
6349
PUT
SPS Commerce
SPSC
$2.7B
| $1.74M | ﹤0.01% |
+31,200
| New | +$2.25M |
|
6350
CALL
American Financial Group
AFG
$12B
| $1.74M | ﹤0.01% |
13,600
+7,800
| +134% | +$1.01M |
|
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.