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 | |
|---|---|---|---|---|---|---|
|
CTRA
2851
CALL
DELISTED
Coterra Energy
CTRA
| $12.9M | ﹤0.01% |
368,100
-461,400
| -56% | -$13.9M |
|
2852
PUT
Monster Beverage
MNST
$91.7B
| $12.9M | ﹤0.01% |
356,800
-353,400
| -50% | -$13.9M |
|
|
SERV
2853
CALL
Serve Robotics
SERV
$433M
| $12.9M | ﹤0.01% |
1,530,900
+668,200
| +77% | +$7.23M |
|
2854
Under Armour
UAA
$2.3B
| $12.9M | ﹤0.01% |
2,186,126
+873,527
| +67% | +$5.66M |
|
2855
FLEX LNG
FLNG
$1.67B
| $12.9M | ﹤0.01% |
434,533
+420,824
| +3,070% | +$11.6M |
|
2856
PUT
Vista Energy
VIST
$7.56B
| $12.9M | ﹤0.01% |
170,900
-14,200
| -8% | -$828K |
|
2857
CALL
Celcuity
CELC
$4.5B
| $12.9M | ﹤0.01% |
113,000
+55,000
| +95% | +$6M |
|
2858
PUT
CarMax
KMX
$8.5B
| $12.9M | ﹤0.01% |
309,900
-228,400
| -42% | -$10M |
|
2859
CALL
Guardant Health
GH
$21.1B
| $12.8M | ﹤0.01% |
139,000
-38,600
| -22% | -$3.88M |
|
2860
PUT
Ralph Lauren
RL
$23.2B
| $12.8M | ﹤0.01% |
37,300
-57,400
| -61% | -$20.4M |
|
2861
Defiance Quantum ETF
QTUM
$5.84B
| $12.8M | ﹤0.01% |
+119,403
| New | +$13.7M |
|
2862
PUT
MKS Inc
MKSI
$21B
| $12.8M | ﹤0.01% |
55,700
+11,900
| +27% | +$2.69M |
|
2863
CALL
Lionsgate Studios
LION
$3.57B
| $12.8M | ﹤0.01% |
1,332,800
+131,300
| +11% | +$1.21M |
|
2864
CALL
Natera
NTRA
$44.7B
| $12.8M | ﹤0.01% |
63,900
+23,000
| +56% | +$4.95M |
|
2865
CALL
Flex
FLEX
$46.6B
| $12.8M | ﹤0.01% |
195,200
-198,800
| -50% | -$12.7M |
|
2866
Invesco S&P 500 High Beta ETF
SPHB
$957M
| $12.8M | ﹤0.01% |
110,055
+27,235
| +33% | +$3.29M |
|
2867
PUT
Lumen
LUMN
$6.93B
| $12.7M | ﹤0.01% |
1,834,100
-200,400
| -10% | -$1.52M |
|
2868
PUT
Li Auto
LI
$12B
| $12.7M | ﹤0.01% |
714,000
-532,600
| -43% | -$9.3M |
|
2869
Old National Bancorp
ONB
$10.4B
| $12.7M | ﹤0.01% |
575,786
+464,086
| +415% | +$10.8M |
|
2870
Tenable Holdings
TENB
$4.22B
| $12.7M | ﹤0.01% |
751,919
+99,248
| +15% | +$2.08M |
|
2871
GitLab
GTLB
$7.2B
| $12.7M | ﹤0.01% |
587,740
-356,842
| -38% | -$10.4M |
|
2872
CALL
Dover
DOV
$27.9B
| $12.7M | ﹤0.01% |
61,000
+41,500
| +213% | +$8.87M |
|
2873
Scorpio Tankers
STNG
$3.98B
| $12.7M | ﹤0.01% |
170,069
-33,441
| -16% | -$2.24M |
|
2874
PUT
British American Tobacco
BTI
$123B
| $12.7M | ﹤0.01% |
217,100
-361,300
| -62% | -$21.4M |
|
2875
Avantis Emerging Markets Value ETF
AVES
$1.49B
| $12.7M | ﹤0.01% |
211,607
+156,118
| +281% | +$9.7M |
|
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.