POWER INTEGRATIONS INC

Ticker: POWI CUSIP: 739276103 Class: Common Stock

MACKAY SHIELDS LLC's Holding History (CIK: 0000061227)

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

Q1 2021

Shares 33,600 Value ($000) $2,738 Avg Close $82.50 Range $71.90 - $93.83

Q4 2020

Shares 58,500 Value ($000) $4,789 Avg Close $64.22 Range $50.77 - $77.70

Period	Shares	Value ($000)	Average Close	Price Range
Q1 2021	33,600	$2,738	$82.50	$71.90 - $93.83
Q4 2020	58,500	$4,789	$64.22	$50.77 - $77.70