Ken Griffin
CTRM icon

Ken Griffin’s Castor Maritime CTRM Stock Holding History

Ken Griffin’s Portfolio CTRM Stock Details CTRM Fund Activity
Bought
Maintained
Sold
Quarter Market Value Status Shares Change in
Stake 		Trade Value Portfolio Weight Portfolio Position
2026
Q1 		– Sell
-73,357
Closed -$156K – 13154
2025
Q4 		$152K Buy
+73,357
New +$153K ﹤0.01% 11306
2024
Q4 		– Sell
-12,493
Closed -$52.7K – 14636
2024
Q3 		$52.7K Buy
+12,493
New +$57.7K ﹤0.01% 11848
2023
Q4 		– Sell
-1,071
Closed -$4.11K – 14381
2023
Q3 		$4.62K Sell
1,071
-3,035
-74% -$13.4K ﹤0.01% 13470
2023
Q2 		$18.4K Buy
+4,106
New +$24.7K ﹤0.01% 12795
2022
Q2 		– Sell
-4,354
Closed -$80.6K – 13022
2022
Q1 		$80K Sell
4,354
-61,369
-93% -$948K ﹤0.01% 12478
2021
Q4 		$934K Buy
65,723
+5,619
+9% +$115K ﹤0.01% 8127
2021
Q3 		$1.47M Buy
60,104
+22,133
+58% +$497K ﹤0.01% 7133
2021
Q2 		$989K Buy
+37,971
New +$1.54M ﹤0.01% 8397
2021
Q1 		– Sell
-4,080
Closed -$75K – 13224
2020
Q4 		$75K Buy
+4,080
New +$63.5K ﹤0.01% 10380
2020
Q3 		– Sell
-571
Closed -$23K – 10149
2020
Q2 		$23K Buy
+571
New +$37.1K ﹤0.01% 9526

Other funds holding CTRM

TL
TowerView LLC New York $152M AUM 20.28% 1-Year Est. Return
Renaissance Technologies
Renaissance Technologies New York $72.6B AUM 54.88% 1-Year Est. Return
Goldman Sachs
Goldman Sachs New York $871B AUM 31.28% 1-Year Est. Return
AA
Apriem Advisors Irvine, California $1.05B AUM 22.09% 1-Year Est. Return
CC
Centiva Capital New York $11.5B AUM 31.97% 1-Year Est. Return
Simplex Trading
Simplex Trading Chicago, Illinois $171B AUM 85% 1-Year Est. Return
UBS Group
UBS Group Zurich, Switzerland $786B AUM 40.34% 1-Year Est. Return
Group One Trading
Group One Trading Chicago, Illinois $52.2B AUM 104.56% 1-Year Est. Return
Morgan Stanley
Morgan Stanley New York $1.89T AUM 35.08% 1-Year Est. Return
SS
SBI Securities Tokyo, Japan $4.4B AUM 74.26% 1-Year Est. Return

Ken Griffin's CTRM Position: Q1 2026 in Review

Ken Griffin sold out of Castor Maritime (CTRM) in Q1 2026, closing a stake of 73,357 shares — an estimated $156K sold.

Ken Griffin first reported a position in CTRM in Q2 2020 and held it in 10 quarters. The position peaked at $1.47M in Q3 2021. 19 funds tracked by Wall St. Rank hold CTRM as of Q1 2026.

  • Ken Griffin reported no remaining Castor Maritime position as of Q1 2026 after selling out during the quarter.
  • Ken Griffin sold 73,357 Castor Maritime shares in Q1 2026, an estimated $156K.
  • Ken Griffin first reported a position in Castor Maritime in Q2 2020 and held it in 10 quarters.
  • Ken Griffin's Castor Maritime position peaked at $1.47M in Q3 2021.
  • 19 funds tracked by Wall St. Rank held Castor Maritime as of Q1 2026.

Based on Citadel Advisors's 13F filing for Q1 2026, filed 15 May 2026.