CDW CORP

Ticker: CDW CUSIP: 12514G108 Class: COM

AMICA MUTUAL INSURANCE CO's Holding History (CIK: 0000857508)

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

Q2 2020

Shares 4,175 Value ($000) $485 Avg Close $101.20 Range $80.00 - $120.94

Q1 2020

Shares 4,175 Value ($000) $389 Avg Close $114.00 Range $68.44 - $135.85

Q4 2019

Shares 4,175 Value ($000) $596 Avg Close $122.84 Range $109.01 - $134.79

Q4 2017

Shares 51,409 Value ($000) $3,572 Avg Close $62.44 Range $59.44 - $64.82

Q3 2017

Shares 51,409 Value ($000) $3,393 Avg Close $56.63 Range $53.08 - $60.54

Q2 2017

Shares 51,409 Value ($000) $3,215 Avg Close $53.99 Range $50.30 - $59.95

Q1 2017

Shares 51,409 Value ($000) $2,967 Avg Close $50.65 Range $45.39 - $54.98

Q4 2016

Shares 51,409 Value ($000) $2,678 Avg Close $43.76 Range $39.11 - $49.86

Q3 2016

Shares 51,409 Value ($000) $2,351 Avg Close $39.25 Range $35.02 - $42.57

Q2 2016

Shares 51,409 Value ($000) $2,060 Avg Close $37.03 Range $33.71 - $38.50

Q1 2016

Shares 51,409 Value ($000) $2,133 Avg Close $34.71 Range $27.03 - $37.36

Q4 2015

Shares 23,559 Value ($000) $990 Avg Close $38.66 Range $35.55 - $41.63

Period	Shares	Value ($000)	Average Close	Price Range
Q2 2020	4,175	$485	$101.20	$80.00 - $120.94
Q1 2020	4,175	$389	$114.00	$68.44 - $135.85
Q4 2019	4,175	$596	$122.84	$109.01 - $134.79
Q4 2017	51,409	$3,572	$62.44	$59.44 - $64.82
Q3 2017	51,409	$3,393	$56.63	$53.08 - $60.54
Q2 2017	51,409	$3,215	$53.99	$50.30 - $59.95
Q1 2017	51,409	$2,967	$50.65	$45.39 - $54.98
Q4 2016	51,409	$2,678	$43.76	$39.11 - $49.86
Q3 2016	51,409	$2,351	$39.25	$35.02 - $42.57
Q2 2016	51,409	$2,060	$37.03	$33.71 - $38.50
Q1 2016	51,409	$2,133	$34.71	$27.03 - $37.36
Q4 2015	23,559	$990	$38.66	$35.55 - $41.63