Walleye Trading’s Bio-Rad Laboratories Class A BIO Stock Holding History

Bought

Maintained

Sold

Quarter	Market Value	Status	Shares	Change in Stake	Trade Value	Portfolio Weight	Portfolio Position
2024 Q1	–	Sell	-3,100	Closed	-$1M	–	4825
2023 Q4	$1M	Buy	+3,100	New	+$972K	0.02%	2463
2022 Q2	–	Sell	-400	Closed	-$225K	–	5196
2022 Q1	$225K	Sell	400 -500	-56%	-$301K	﹤0.01%	3690
2021 Q4	$680K	Buy	900 +500	+125%	+$374K	0.01%	2633
2021 Q3	$298K	Sell	400 -400	-50%	-$300K	0.01%	3457
2021 Q2	$515K	Hold	800	–	–	0.01%	2879
2021 Q1	$457K	Sell	800 -200	-20%	-$118K	0.02%	2738
2020 Q4	$583K	Buy	+1,000	New	+$570K	0.02%	2519
2020 Q3	–	Sell	-600	Closed	-$271K	–	4173
2020 Q2	$271K	Sell	600 -500	-45%	-$221K	0.02%	2836
2020 Q1	$386K	Buy	1,100 +500	+83%	+$184K	0.02%	2073
2019 Q4	$222K	Buy	+600	New	+$212K	0.01%	3080
2019 Q3	–	Sell	-600	Closed	-$188K	–	4085
2019 Q2	$188K	Buy	+600	New	+$180K	0.02%	2988