CDW CORP

Ticker: CDW CUSIP: 12514G108 Class: COM

Channing Capital Management, LLC's Holding History (CIK: 0001302404)

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

Q2 2017

Shares 333,092 Value ($000) $20,828 Avg Close $53.99 Range $50.30 - $59.95

Q1 2017

Shares 343,189 Value ($000) $19,805 Avg Close $50.65 Range $45.39 - $54.98

Q4 2016

Shares 347,955 Value ($000) $18,125 Avg Close $43.76 Range $39.11 - $49.86

Q3 2016

Shares 348,523 Value ($000) $15,938 Avg Close $39.25 Range $35.02 - $42.57

Q2 2016

Shares 329,063 Value ($000) $13,189 Avg Close $37.03 Range $33.71 - $38.50

Q1 2016

Shares 255,997 Value ($000) $10,624 Avg Close $34.71 Range $27.03 - $37.36

Period	Shares	Value ($000)	Average Close	Price Range
Q2 2017	333,092	$20,828	$53.99	$50.30 - $59.95
Q1 2017	343,189	$19,805	$50.65	$45.39 - $54.98
Q4 2016	347,955	$18,125	$43.76	$39.11 - $49.86
Q3 2016	348,523	$15,938	$39.25	$35.02 - $42.57
Q2 2016	329,063	$13,189	$37.03	$33.71 - $38.50
Q1 2016	255,997	$10,624	$34.71	$27.03 - $37.36