POWER INTEGRATIONS INC

Ticker: POWI CUSIP: 739276103 Class: Common Stock

FORT WASHINGTON INVESTMENT ADVISORS INC /OH/'s Holding History (CIK: 0001009016)

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

Q4 2013

Shares 39,974 Value ($000) $2,231 Avg Close $24.04 Range $22.49 - $26.82

Q3 2013

Shares 49,037 Value ($000) $2,656 Avg Close $23.02 Range $17.96 - $25.46

Q2 2013

Shares 103,126 Value ($000) $4,183 Avg Close $18.48 Range $16.68 - $20.17

Period	Shares	Value ($000)	Average Close	Price Range
Q4 2013	39,974	$2,231	$24.04	$22.49 - $26.82
Q3 2013	49,037	$2,656	$23.02	$17.96 - $25.46
Q2 2013	103,126	$4,183	$18.48	$16.68 - $20.17