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 | |
|---|---|---|---|---|---|---|
1376
BellRing Brands
BRBR
$1.28B
| $49.1M | 0.01% |
3,051,346
+2,359,023
| +341% | +$47.8M |
|
1377
iShares Bitcoin Trust
IBIT
$47.2B
| $49M | 0.01% |
1,275,680
-2,751,452
| -68% | -$119M |
|
|
PSKY
1378
PUT
Paramount Skydance Corp
PSKY
$11.2B
| $49M | 0.01% |
5,433,500
+769,100
| +16% | +$8.41M |
|
1379
Lemonade
LMND
$4.1B
| $49M | 0.01% |
781,816
+246,156
| +46% | +$17M |
|
1380
PUT
S&P Global
SPGI
$125B
| $49M | 0.01% |
115,100
+38,600
| +50% | +$17.9M |
|
1381
PUT
Direxion Daily TSLA Bull 2X ETF
TSLL
$3.49B
| $48.9M | 0.01% |
4,028,500
-5,974,600
| -60% | -$93.2M |
|
1382
PUT
American Tower
AMT
$81.2B
| $48.9M | 0.01% |
283,600
-186,500
| -40% | -$33.6M |
|
1383
Trex
TREX
$5.1B
| $48.8M | 0.01% |
1,341,239
-560,179
| -29% | -$22.5M |
|
1384
Olin
OLN
$2.17B
| $48.8M | 0.01% |
1,640,514
+813,112
| +98% | +$19.9M |
|
1385
Invesco QQQ Trust
QQQ
$487B
| $48.7M | 0.01% |
84,364
-266,158
| -76% | -$162M |
|
1386
Quanta Services
PWR
$101B
| $48.6M | 0.01% |
88,607
+39,340
| +80% | +$20.3M |
|
1387
PUT
JD.com
JD
$39.6B
| $48.6M | 0.01% |
1,644,800
-3,500,400
| -68% | -$98.9M |
|
1388
CALL
Direxion Daily GOOGL Bull 2X ETF
GGLL
$958M
| $48.5M | 0.01% |
621,500
+285,600
| +85% | +$27.5M |
|
1389
CALL
ING
ING
$102B
| $48.5M | 0.01% |
1,860,700
-462,900
| -20% | -$13M |
|
1390
PUT
Nutrien
NTR
$32.2B
| $48.4M | 0.01% |
642,000
+11,700
| +2% | +$834K |
|
1391
Cameco
CCJ
$42.6B
| $48.4M | 0.01% |
445,966
-111,242
| -20% | -$12.7M |
|
|
FLY
1392
CALL
Firefly Aerospace
FLY
$4.48B
| $48.3M | 0.01% |
1,696,300
+1,409,900
| +492% | +$34.3M |
|
1393
CALL
Direxion Daily S&P Biotech Bull 3X ETF
LABU
$623M
| $48.1M | 0.01% |
289,400
+27,135
| +10% | +$4.45M |
|
1394
Ambarella
AMBA
$3.6B
| $48M | 0.01% |
931,862
+396,188
| +74% | +$24.7M |
|
1395
PUT
HCA Healthcare
HCA
$89.1B
| $47.8M | 0.01% |
101,100
-144,700
| -59% | -$72.8M |
|
1396
CALL
D.R. Horton
DHI
$41.9B
| $47.8M | 0.01% |
348,600
-327,800
| -48% | -$49.5M |
|
1397
Celestica
CLS
$43.8B
| $47.8M | 0.01% |
169,544
+32,037
| +23% | +$9.3M |
|
|
FLG
1398
Flagstar Bank National Association
FLG
$5.92B
| $47.7M | 0.01% |
3,623,963
-1,015,299
| -22% | -$13.3M |
|
1399
GFL Environmental
GFL
$15B
| $47.7M | 0.01% |
1,143,825
-231,290
| -17% | -$9.89M |
|
1400
CALL
Fabrinet
FN
$20.3B
| $47.7M | 0.01% |
91,400
+33,600
| +58% | +$17.1M |
|
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.