William Blair Investment Management’s Cboe Global Markets CBOE Stock Holding History

Bought

Maintained

Sold

Quarter	Market Value	Status	Shares	Change in Stake	Trade Value	Portfolio Weight	Portfolio Position
2020 Q3	–	Sell	-79,111	Closed	-$7.38M	–	348
2020 Q2	$7.38M	Sell	79,111 -1,102,179	-93%	-$109M	0.03%	289
2020 Q1	$105M	Buy	1,181,290 +51,425	+5%	+$5.76M	0.51%	62
2019 Q4	$136M	Sell	1,129,865 -840,814	-43%	-$98.6M	0.54%	59
2019 Q3	$226M	Sell	1,970,679 -426,547	-18%	-$49.4M	0.97%	23
2019 Q2	$248M	Sell	2,397,226 -54,526	-2%	-$5.65M	1.04%	15
2019 Q1	$234M	Sell	2,451,752 -29,204	-1%	-$2.77M	0.98%	21
2018 Q4	$243M	Buy	2,480,956 +175,948	+8%	+$18.3M	1.21%	12
2018 Q3	$221M	Buy	2,305,008 +738,063	+47%	+$74.4M	0.77%	31
2018 Q2	$163M	Sell	1,566,945 -41,077	-3%	-$4.34M	0.61%	49
2018 Q1	$183M	Buy	1,608,022 +662,705	+70%	+$80.6M	0.7%	37
2017 Q4	$118M	Buy	945,317 +33,594	+4%	+$3.93M	0.46%	76
2017 Q3	$98.1M	Buy	911,723 +263	+0%	+$25.9K	0.35%	95
2017 Q2	$83.3M	Buy	911,460 +33,226	+4%	+$2.84M	0.3%	104
2017 Q1	$71.2M	Buy	878,234 +76,211	+10%	+$5.96M	0.27%	116
2016 Q4	$59.3M	Buy	802,023 +16,253	+2%	+$1.12M	0.24%	132
2016 Q3	$51M	Sell	785,770 -925,111	-54%	-$63.1M	0.2%	143
2016 Q2	$114M	Buy	1,710,881 +39,704	+2%	+$2.54M	0.45%	76
2016 Q1	$109M	Buy	1,671,177 +19,100	+1%	+$1.22M	0.43%	83
2015 Q4	$107M	Buy	1,652,077 +296,845	+22%	+$20.1M	0.43%	82
2015 Q3	$90.9M	Buy	+1,355,232	New	+$85.4M	0.19%	155