Jane Street’s Castor Maritime CTRM Stock Holding History

Jane Street’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
2022 Q2	–	Sell	-5,520	Closed	-$102K	–	9790
2022 Q1	$102K	Sell	5,520 -13,930	-72%	-$215K	﹤0.01%	9447
2021 Q4	$276K	Buy	19,450 +7,310	+60%	+$150K	﹤0.01%	8331
2021 Q3	$296K	Buy	+12,140	New	+$273K	﹤0.01%	8212

Other funds holding CTRM

TowerView LLC New York $155M AUM 30.14% 1-Year Est. Return

Renaissance Technologies New York $63.9B AUM 45.56% 1-Year Est. Return

Goldman Sachs New York $871B AUM 31.28% 1-Year Est. Return

Apriem Advisors Irvine, California $1.05B AUM 22.09% 1-Year Est. Return

Centiva Capital New York $13.6B AUM 20% 1-Year Est. Return

Simplex Trading Chicago, Illinois $149B AUM 62.07% 1-Year Est. Return

UBS Group Zurich, Switzerland $666B AUM 30.12% 1-Year Est. Return

Group One Trading Chicago, Illinois $52.2B AUM 104.56% 1-Year Est. Return

Morgan Stanley New York $1.66T AUM 25.57% 1-Year Est. Return

SBI Securities Tokyo, Japan $4.4B AUM 74.25% 1-Year Est. Return

Jane Street's CTRM Position: Q1 2026 in Review

Jane Street sold out of Castor Maritime (CTRM) in Q1 2026, closing a stake of 17,898 shares — an estimated $37K sold.

Jane Street first reported a position in CTRM in Q1 2021 and held it in 11 quarters. The position peaked at $210K in Q3 2021. 19 funds tracked by Wall St. Rank hold CTRM as of Q1 2026.

Jane Street reported no remaining Castor Maritime position as of Q1 2026 after selling out during the quarter.
Jane Street sold 17,898 Castor Maritime shares in Q1 2026, an estimated $37K.
Jane Street first reported a position in Castor Maritime in Q1 2021 and held it in 11 quarters.
Jane Street's Castor Maritime position peaked at $210K in Q3 2021.
19 funds tracked by Wall St. Rank held Castor Maritime as of Q1 2026.

Based on Jane Street's 13F filing for Q1 2026, filed 12 May 2026.