CDW CORP

Ticker: CDW CUSIP: 12514G108 Class: COM

RATIONAL ADVISORS LLC's Holding History (CIK: 0001143565)

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

Q4 2020

Shares 376 Value ($000) $50 Avg Close $123.09 Range $109.89 - $137.99

Q3 2020

Shares 27 Value ($000) $3 Avg Close $107.20 Range $99.42 - $114.46

Q1 2020

Shares 1,520 Value ($000) $142 Avg Close $114.00 Range $68.44 - $135.85

Q4 2019

Shares 5,584 Value ($000) $798 Avg Close $122.84 Range $109.01 - $134.79

Q3 2019

Shares 6,814 Value ($000) $840 Avg Close $106.19 Range $98.04 - $115.31

Period	Shares	Value ($000)	Average Close	Price Range
Q4 2020	376	$50	$123.09	$109.89 - $137.99
Q3 2020	27	$3	$107.20	$99.42 - $114.46
Q1 2020	1,520	$142	$114.00	$68.44 - $135.85
Q4 2019	5,584	$798	$122.84	$109.01 - $134.79
Q3 2019	6,814	$840	$106.19	$98.04 - $115.31