WESTERN DIGITAL CORP

Ticker: WDC CUSIP: 958102105 Class: EQTY

Choate Investment Advisors's Holding History (CIK: 0001399794)

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

Q4 2015

Shares 5,505 Value ($000) $609,404 Avg Close $43.55 Range $37.34 - $55.67

Q4 2014

Shares 5,505 Value ($000) $609,404 Avg Close $62.96 Range $52.21 - $72.28

Period	Shares	Value ($000)	Average Close	Price Range
Q4 2015	5,505	$609,404	$43.55	$37.34 - $55.67
Q4 2014	5,505	$609,404	$62.96	$52.21 - $72.28