VICOR CORP

Ticker: VICR CUSIP: 925815102 Class: Common Stock

GREAT LAKES ADVISORS, LLC's Holding History (CIK: 0001078013)

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

Q4 2021

Shares 48,767 Value ($000) $6,192 Avg Close $141.59 Range $112.60 - $164.76

Q3 2021

Shares 49,280 Value ($000) $6,611 Avg Close $119.49 Range $101.89 - $139.01

Q2 2020

Shares 82,461 Value ($000) $5,933 Avg Close $56.15 Range $37.28 - $73.76

Period	Shares	Value ($000)	Average Close	Price Range
Q4 2021	48,767	$6,192	$141.59	$112.60 - $164.76
Q3 2021	49,280	$6,611	$119.49	$101.89 - $139.01
Q2 2020	82,461	$5,933	$56.15	$37.28 - $73.76