Walleye Trading

Walleye Trading’s Mersana Therapeutics MRSN Stock Holding History

Walleye Trading’s Portfolio MRSN Stock Details MRSN Fund Activity

Bought

Maintained

Sold

Quarter	Market Value	Status	Shares	Change in Stake	Trade Value	Portfolio Weight	Portfolio Position
2025 Q3	–	Sell	-1,261	Closed	-$9.33K	–	4979
2025 Q2	$9.33K	Hold	1,261	–	–	﹤0.01%	4048
2025 Q1	$10.9K	Hold	1,261	–	–	﹤0.01%	3845
2024 Q4	$45.1K	Hold	1,261	–	–	﹤0.01%	3813
2024 Q3	$59.6K	Hold	1,261	–	–	﹤0.01%	3481
2024 Q2	$63.4K	Hold	1,261	–	–	﹤0.01%	3518
2024 Q1	$141K	Buy	+1,261	New	+$125K	﹤0.01%	3616
2023 Q4	–	Sell	-4,860	Closed	-$154K	–	5588
2023 Q3	$154K	Buy	+4,860	New	+$231K	﹤0.01%	3764
2023 Q2	–	Sell	-857	Closed	-$88K	–	5426
2023 Q1	$88K	Buy	+857	New	+$120K	﹤0.01%	3902
2022 Q2	–	Sell	-2,461	Closed	-$245K	–	5772
2022 Q1	$245K	Sell	2,461 -8	-0.3%	-$935	0.01%	3629
2021 Q4	$384K	Buy	2,469 +1,523	+161%	+$296K	0.01%	3211
2021 Q3	$223K	Buy	946 +338	+56%	+$98.7K	0.01%	3750
2021 Q2	$206K	Buy	+608	New	+$230K	0.01%	3881
2019 Q4	–	Sell	-609	Closed	-$24K	–	4707
2019 Q3	$24K	Buy	609 +73	+14%	+$5.31K	﹤0.01%	3733
2019 Q2	$54K	Buy	+536	New	+$63.1K	﹤0.01%	3511

Other funds holding MRSN

Nextech Invest Zurich, Switzerland $1.42B AUM 304.47% 1-Year Est. Return

Alamea Verwaltungs Edison, New Jersey $135M AUM 36.32% 1-Year Est. Return

Bain Capital Life Sciences Investors Boston, Massachusetts $1.11B AUM 171.34% 1-Year Est. Return

Vanguard Group Malvern, Pennsylvania $6.9T AUM 27.45% 1-Year Est. Return

Schonfeld Strategic Advisors New York $12.3B AUM 37.17% 1-Year Est. Return

Rock Springs Capital Management Baltimore, Maryland $1.7B AUM 93.03% 1-Year Est. Return

Acadian Asset Management

Acadian Asset Management Boston, Massachusetts $70.5B AUM 36% 1-Year Est. Return

Silverarc Capital Management Boston, Massachusetts $849M AUM 470.8% 1-Year Est. Return

683 Capital Management New York $1.08B AUM 85.52% 1-Year Est. Return

BlackRock New York $5.7T AUM 30.48% 1-Year Est. Return