Walleye Trading’s Gritstone bio, Inc. Common Stock GRTS Stock Holding History

Bought

Maintained

Sold

Quarter	Market Value	Status	Shares	Shares Change %	Capital Flow	Portfolio Weight	Portfolio Position
2021 Q2	–	Sell	-26,607	Closed	-$251K	–	2507
2021 Q1	$251K	Sell	26,607 -14,759	-36%	-$139K	﹤0.01%	959
2020 Q4	$163K	Sell	41,366 -43,190	-51%	-$170K	﹤0.01%	990
2020 Q3	$224K	Buy	+84,556	New	+$224K	﹤0.01%	613