POWER INTEGRATIONS INC

Ticker: POWI CUSIP: 739276103 Class: Common Stock

CONTRAVISORY INVESTMENT MANAGEMENT, INC.'s Holding History (CIK: 0001365707)

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

Q4 2017

Shares 17 Value ($000) $1 Avg Close $35.18 Range $32.26 - $39.91

Q3 2017

Shares 17 Value ($000) $1 Avg Close $33.61 Range $30.70 - $38.09

Period	Shares	Value ($000)	Average Close	Price Range
Q4 2017	17	$1	$35.18	$32.26 - $39.91
Q3 2017	17	$1	$33.61	$30.70 - $38.09