CDW CORP

Ticker: CDW CUSIP: 12514G108 Class: COM

Thomas J. Herzfeld Advisors, Inc.'s Holding History (CIK: 0001509510)

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

Q1 2022

Shares 30 Value ($000) $5 Avg Close $174.21 Range $155.37 - $198.47

Q4 2021

Shares 30 Value ($000) $6 Avg Close $180.53 Range $163.37 - $197.48

Q3 2021

Shares 24 Value ($000) $4 Avg Close $178.95 Range $162.18 - $193.32

Q2 2021

Shares 24 Value ($000) $4 Avg Close $162.84 Range $153.52 - $174.30

Q1 2021

Shares 24 Value ($000) $4 Avg Close $140.79 Range $118.17 - $159.55

Period	Shares	Value ($000)	Average Close	Price Range
Q1 2022	30	$5	$174.21	$155.37 - $198.47
Q4 2021	30	$6	$180.53	$163.37 - $197.48
Q3 2021	24	$4	$178.95	$162.18 - $193.32
Q2 2021	24	$4	$162.84	$153.52 - $174.30
Q1 2021	24	$4	$140.79	$118.17 - $159.55