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 | |
|---|---|---|---|---|---|---|
4626
MYR Group
MYRG
$5.19B
| $4.11M | ﹤0.01% |
14,549
+9,232
| +174% | +$2.4M |
|
4627
Innoviva
INVA
$1.52B
| $4.1M | ﹤0.01% |
176,077
-2,237
| -1% | -$48.2K |
|
|
KE
4628
Kimball Electronics
KE
$627M
| $4.1M | ﹤0.01% |
173,039
+136,289
| +371% | +$3.6M |
|
4629
Sonida Senior Living
SNDA
$1.92B
| $4.1M | ﹤0.01% |
127,066
+92,284
| +265% | +$3.09M |
|
4630
PUT
Celcuity
CELC
$4.63B
| $4.1M | ﹤0.01% |
35,900
+12,000
| +50% | +$1.31M |
|
|
PSIX
4631
CALL
Power Solutions International
PSIX
$930M
| $4.1M | ﹤0.01% |
67,300
+13,500
| +25% | +$963K |
|
4632
PUT
Arrowhead Research
ARWR
$12B
| $4.09M | ﹤0.01% |
65,300
-1,400
| -2% | -$88.6K |
|
|
VOYG
4633
CALL
Voyager Technologies
VOYG
$2.6B
| $4.09M | ﹤0.01% |
175,000
-103,500
| -37% | -$2.97M |
|
4634
PUT
Novavax
NVAX
$1.31B
| $4.09M | ﹤0.01% |
502,800
-350,200
| -41% | -$3.17M |
|
4635
PUT
PENN Entertainment
PENN
$2.52B
| $4.09M | ﹤0.01% |
272,100
-10,400
| -4% | -$145K |
|
4636
CALL
Commercial Metals
CMC
$7.96B
| $4.09M | ﹤0.01% |
66,500
+30,400
| +84% | +$2.2M |
|
|
AAT
4637
American Assets Trust
AAT
$1.4B
| $4.08M | ﹤0.01% |
221,856
-53,846
| -20% | -$1.01M |
|
|
SEZL
4638
PUT
Sezzle
SEZL
$4.53B
| $4.08M | ﹤0.01% |
64,500
-48,400
| -43% | -$3.3M |
|
4639
CALL
Axcelis
ACLS
$4.29B
| $4.08M | ﹤0.01% |
43,800
-2,500
| -5% | -$221K |
|
4640
PUT
GlobalFoundries
GFS
$29.7B
| $4.07M | ﹤0.01% |
91,600
-72,300
| -44% | -$3.19M |
|
4641
Aurinia Pharmaceuticals
AUPH
$2.03B
| $4.07M | ﹤0.01% |
274,574
-504,921
| -65% | -$7.38M |
|
4642
Enovix
ENVX
$964M
| $4.07M | ﹤0.01% |
785,329
+588,873
| +300% | +$3.69M |
|
4643
CALL
Copa Holdings
CPA
$6.19B
| $4.07M | ﹤0.01% |
35,800
-20,800
| -37% | -$2.73M |
|
4644
CorVel
CRVL
$3.3B
| $4.07M | ﹤0.01% |
74,414
+16,545
| +29% | +$953K |
|
4645
CALL
Schwab US Large-Cap Growth ETF
SCHG
$63B
| $4.07M | ﹤0.01% |
139,600
+23,900
| +21% | +$743K |
|
4646
Pliant Therapeutics
PLRX
$66.3M
| $4.07M | ﹤0.01% |
3,226,599
+643,267
| +25% | +$812K |
|
4647
Pacer US Small Cap Cash Cows 100 ETF
CALF
$3.89B
| $4.06M | ﹤0.01% |
90,556
+30,817
| +52% | +$1.4M |
|
4648
PUT
BridgeBio Pharma
BBIO
$15.7B
| $4.06M | ﹤0.01% |
54,700
-56,700
| -51% | -$4.11M |
|
4649
Granite Construction
GVA
$5.56B
| $4.06M | ﹤0.01% |
33,858
-129,519
| -79% | -$16.2M |
|
4650
Zentalis Pharmaceuticals
ZNTL
$255M
| $4.05M | ﹤0.01% |
1,732,083
-232,172
| -12% | -$600K |
|
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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.