William Blair Investment Management’s ASPEN TECHNOLOGY INC AZPN Stock Holding History

Bought

Maintained

Sold

Quarter	Market Value	Status	Shares	Change in Stake	Trade Value	Portfolio Weight	Portfolio Position
2021 Q3	–	Sell	-1,516,682	Closed	-$209M	–	520
2021 Q2	$209M	Sell	1,516,682 -30,289	-2%	-$4.17M	0.65%	55
2021 Q1	$223M	Buy	1,546,971 +10,823	+0.7%	+$1.56M	0.72%	44
2020 Q4	$200M	Sell	1,536,148 -39,220	-2%	-$5.11M	0.67%	56
2020 Q3	$199M	Sell	1,575,368 -25,390	-2%	-$3.21M	0.78%	38
2020 Q2	$166M	Buy	1,600,758 +30,133	+2%	+$3.12M	0.68%	54
2020 Q1	$149M	Buy	1,570,625 +75,132	+5%	+$7.14M	0.73%	41
2019 Q4	$181M	Sell	1,495,493 -98,865	-6%	-$12M	0.72%	43
2019 Q3	$196M	Buy	1,594,358 +32,171	+2%	+$3.96M	0.84%	31
2019 Q2	$194M	Sell	1,562,187 -20,493	-1%	-$2.55M	0.81%	35
2019 Q1	$165M	Buy	1,582,680 +386,376	+32%	+$40.3M	0.69%	46
2018 Q4	$98.3M	Sell	1,196,304 -11,768	-1%	-$967K	0.49%	66
2018 Q3	$138M	Buy	1,208,072 +226,796	+23%	+$25.8M	0.48%	71
2018 Q2	$91M	Buy	+981,276	New	+$91M	0.34%	97
2015 Q4	–	Sell	-85,755	Closed	-$3.25M	–	494
2015 Q3	$3.25M	Buy	+85,755	New	+$3.25M	0.01%	835