CBOE GLOBAL MKTS INC

Ticker: CBOE CUSIP: 12503M108 Class: COM

WESTFIELD CAPITAL MANAGEMENT CO LP's Holding History (CIK: 0001177719)

Note: Option positions (PUT/CALL) are excluded.

Q3 2019

Shares 3,400 Value ($000) $391 Avg Close $106.30 Range $95.67 - $112.76

Q2 2019

Shares 3,400 Value ($000) $352 Avg Close $94.92 Range $86.04 - $103.62

Q1 2015

Shares 371,874 Value ($000) $21,347 Avg Close $54.08 Range $49.21 - $58.96

Q4 2014

Shares 699,244 Value ($000) $44,346 Avg Close $51.66 Range $45.70 - $56.69

Q3 2014

Shares 902,350 Value ($000) $48,298 Avg Close $44.08 Range $40.03 - $48.69

Q2 2014

Shares 779,760 Value ($000) $38,372 Avg Close $43.57 Range $40.31 - $48.86

Period	Shares	Value ($000)	Average Close	Price Range
Q3 2019	3,400	$391	$106.30	$95.67 - $112.76
Q2 2019	3,400	$352	$94.92	$86.04 - $103.62
Q1 2015	371,874	$21,347	$54.08	$49.21 - $58.96
Q4 2014	699,244	$44,346	$51.66	$45.70 - $56.69
Q3 2014	902,350	$48,298	$44.08	$40.03 - $48.69
Q2 2014	779,760	$38,372	$43.57	$40.31 - $48.86