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 | |
|---|---|---|---|---|---|---|
1226
CALL
Shift4
FOUR
$3.79B
| $57.6M | 0.01% |
1,317,200
+1,017,400
| +339% | +$56.2M |
|
1227
Xylem
XYL
$28.1B
| $57.6M | 0.01% |
481,831
+340,741
| +242% | +$44.7M |
|
1228
CALL
State Street SPDR S&P Retail ETF
XRT
$643M
| $57.4M | 0.01% |
713,700
-211,000
| -23% | -$18.1M |
|
1229
BGC Group
BGC
$5.2B
| $57.4M | 0.01% |
5,872,148
+3,464,259
| +144% | +$32.1M |
|
1230
Burlington
BURL
$22.4B
| $57.3M | 0.01% |
176,241
-411,218
| -70% | -$126M |
|
1231
Gates Industrial Corporation Ltd.
GTES
$7B
| $57.3M | 0.01% |
2,535,590
+1,763,901
| +229% | +$42.9M |
|
1232
CALL
Entegris
ENTG
$25B
| $57.3M | 0.01% |
488,900
+336,600
| +221% | +$39.8M |
|
1233
PUT
Danaher
DHR
$143B
| $57.3M | 0.01% |
302,300
-168,600
| -36% | -$35.9M |
|
1234
PUT
Boston Scientific
BSX
$74.9B
| $57.1M | 0.01% |
910,400
+310,400
| +52% | +$24.8M |
|
1235
Mercado Libre
MELI
$92.7B
| $56.9M | 0.01% |
32,922
+17,732
| +117% | +$34.2M |
|
1236
PUT
Petrobras
PBR
$115B
| $56.9M | 0.01% |
2,740,100
+1,036,800
| +61% | +$16.6M |
|
1237
Centene
CNC
$32.6B
| $56.8M | 0.01% |
1,736,214
-2,927,753
| -63% | -$120M |
|
1238
Braze
BRZE
$3.36B
| $56.8M | 0.01% |
2,404,580
+402,129
| +20% | +$8.7M |
|
1239
CALL
Hecla Mining
HL
$11.9B
| $56.7M | 0.01% |
3,041,700
+952,500
| +46% | +$21.4M |
|
1240
CALL
Chubb
CB
$133B
| $56.6M | 0.01% |
173,700
+10,200
| +6% | +$3.27M |
|
1241
Valero Energy
VLO
$98.7B
| $56.5M | 0.01% |
228,855
-605,695
| -73% | -$125M |
|
1242
CALL
Zoom
ZM
$32.2B
| $56.5M | 0.01% |
702,500
-272,100
| -28% | -$22.8M |
|
|
TEM
1243
PUT
Tempus AI
TEM
$9.8B
| $56.4M | 0.01% |
1,248,000
+691,000
| +124% | +$39.3M |
|
1244
CALL
Liquidia Corp
LQDA
$6.45B
| $56.4M | 0.01% |
1,493,300
+757,600
| +103% | +$28.1M |
|
1245
AT&T
T
$168B
| $56.3M | 0.01% |
1,943,408
-1,214,267
| -38% | -$32.4M |
|
1246
PUT
Marathon Digital Holdings
MARA
$3.56B
| $56.2M | 0.01% |
6,888,300
-24,000
| -0.3% | -$217K |
|
1247
Factset
FDS
$10.2B
| $56.2M | 0.01% |
258,995
-609,471
| -70% | -$142M |
|
1248
PUT
Direxion Daily Small Cap Bull 3x ETF
TNA
$1.5B
| $56.2M | 0.01% |
1,272,600
+604,600
| +91% | +$31M |
|
1249
Flex
FLEX
$45.9B
| $56.1M | 0.01% |
856,753
+742,773
| +652% | +$47.5M |
|
1250
PUT
Estee Lauder
EL
$31.6B
| $56M | 0.01% |
780,000
-341,500
| -30% | -$34.9M |
|
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.