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 | |
|---|---|---|---|---|---|---|
3951
McGrath RentCorp
MGRC
$2.96B
| $6.23M | ﹤0.01% |
56,451
-11,246
| -17% | -$1.25M |
|
3952
State Street SPDR S&P Insurance ETF
KIE
$702M
| $6.22M | ﹤0.01% |
113,070
+97,185
| +612% | +$5.59M |
|
3953
PUT
Impinj
PI
$5.26B
| $6.21M | ﹤0.01% |
60,500
+14,900
| +33% | +$1.98M |
|
|
EFXT
3954
Enerflex
EFXT
$2.75B
| $6.2M | ﹤0.01% |
296,215
+264,271
| +827% | +$5.05M |
|
3955
PUT
Goldman Sachs ETF Trust Goldman Sachs Nasdaq-100 Premium Income ETF
GPIQ
$5.45B
| $6.19M | ﹤0.01% |
125,100
+108,000
| +632% | +$5.6M |
|
3956
Dr. Reddy's Laboratories
RDY
$10.1B
| $6.19M | ﹤0.01% |
446,606
+122,157
| +38% | +$1.7M |
|
|
CTO
3957
CTO Realty Growth
CTO
$817M
| $6.18M | ﹤0.01% |
334,449
+293,412
| +715% | +$5.47M |
|
3958
CALL
Service Corp International
SCI
$11.3B
| $6.18M | ﹤0.01% |
74,900
+23,200
| +45% | +$1.87M |
|
3959
PUT
Bilibili
BILI
$7.22B
| $6.18M | ﹤0.01% |
273,800
-556,800
| -67% | -$16M |
|
3960
PUT
Star Bulk Carriers
SBLK
$3.36B
| $6.18M | ﹤0.01% |
268,900
-42,900
| -14% | -$977K |
|
3961
PUT
iShares S&P 100 ETF
OEF
$20.4B
| $6.17M | ﹤0.01% |
19,400
+16,500
| +569% | +$5.53M |
|
3962
CALL
Procure Space ETF
UFO
$633M
| $6.17M | ﹤0.01% |
137,700
+121,500
| +750% | +$5.46M |
|
|
SOHU
3963
Sohu.com
SOHU
$381M
| $6.17M | ﹤0.01% |
399,224
-202,031
| -34% | -$3.3M |
|
3964
CALL
Compañía de Minas Buenaventura
BVN
$8.65B
| $6.16M | ﹤0.01% |
171,000
+27,400
| +19% | +$990K |
|
3965
VanEck Rare Earth/Strategic Metals ETF
REMX
$2.32B
| $6.16M | ﹤0.01% |
+70,016
| New | +$6.3M |
|
3966
Open Text
OTEX
$5.79B
| $6.16M | ﹤0.01% |
276,876
+270,331
| +4,130% | +$7.02M |
|
3967
Arrowhead Research
ARWR
$12.5B
| $6.16M | ﹤0.01% |
98,194
-376,065
| -79% | -$23.8M |
|
3968
Anterix
ATEX
$1.8B
| $6.15M | ﹤0.01% |
161,163
+52,783
| +49% | +$1.67M |
|
3969
TORM
TRMD
$3.13B
| $6.15M | ﹤0.01% |
220,450
+176,285
| +399% | +$4.49M |
|
3970
CALL
Direxion Daily FTSE China Bear 3X ETF
YANG
$98.8M
| $6.14M | ﹤0.01% |
210,805
-109,835
| -34% | -$2.79M |
|
3971
Mine Safety
MSA
$7.33B
| $6.14M | ﹤0.01% |
37,463
+24,393
| +187% | +$4.46M |
|
3972
Clean Energy Fuels
CLNE
$368M
| $6.14M | ﹤0.01% |
2,474,087
+1,448,643
| +141% | +$3.38M |
|
3973
Phreesia
PHR
$711M
| $6.13M | ﹤0.01% |
731,655
+657,054
| +881% | +$8.69M |
|
3974
PUT
SentinelOne
S
$7.53B
| $6.13M | ﹤0.01% |
476,000
-255,100
| -35% | -$3.54M |
|
3975
Transmedics
TMDX
$3.09B
| $6.12M | ﹤0.01% |
61,601
-81,646
| -57% | -$10.6M |
|
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.