Marshall Wace North America’s Western Digital WDC Stock Holding History

Bought

Maintained

Sold

Quarter	Market Value	Status	Shares	Change in Stake	Trade Value	Portfolio Weight	Portfolio Position
2021 Q3	$8.84M	Sell	207,141 -705,205	-77%	-$33.5M	0.04%	381
2021 Q2	$49.1M	Buy	912,346 +153,594	+20%	+$8.31M	0.21%	106
2021 Q1	$38.3M	Buy	758,752 +161,263	+27%	+$7.54M	0.16%	148
2020 Q4	$25M	Buy	+597,489	New	+$19.8M	0.11%	208
2020 Q3	–	Sell	-13,135	Closed	-$438K	–	1496
2020 Q2	$438K	Sell	13,135 -57,608	-81%	-$1.87M	﹤0.01%	944
2020 Q1	$2.23M	Sell	70,743 -90,379	-56%	-$4M	0.02%	462
2019 Q4	$7.73M	Sell	161,122 -54,266	-25%	-$2.26M	0.04%	328
2019 Q3	$9.71M	Buy	+215,388	New	+$9.19M	0.06%	263
2019 Q2	–	Sell	-47,975	Closed	-$1.74M	–	1650
2019 Q1	$1.74M	Buy	+47,975	New	+$1.64M	0.01%	546
2018 Q3	–	Sell	-268,992	Closed	-$15.7M	–	1401
2018 Q2	$15.7M	Sell	268,992 -13,871	-5%	-$883K	0.09%	250
2018 Q1	$19.7M	Buy	282,863 +229,637	+431%	+$15.5M	0.1%	243
2017 Q4	$3.2M	Buy	+53,226	New	+$3.43M	0.02%	701
2017 Q3	–	Sell	-34,516	Closed	-$2.32M	–	1524
2017 Q2	$2.32M	Sell	34,516 -2,146	-6%	-$143K	0.02%	710
2017 Q1	$2.3M	Buy	+36,662	New	+$2.11M	0.02%	554
2013 Q4	$17.1M	Buy	+268,992	New	+$15M	0.36%	75
2013 Q3	–	Sell	-350,786	Closed	-$16.5M	–	721
2013 Q2	$16.5M	Buy	+350,786	New	+$15.4M	1.3%	3