QUEST DIAGNOSTICS INC

Ticker: DGX CUSIP: 74834L100 Class: COMMON STOCK

GUARDIAN CAPITAL LP's Holding History (CIK: 0001224324)

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

Q2 2015

Shares 5,316 Value ($000) $386 Avg Close $59.70 Range $56.18 - $71.98

Q1 2015

Shares 5,911 Value ($000) $454 Avg Close $57.60 Range $52.93 - $63.03

Period	Shares	Value ($000)	Average Close	Price Range
Q2 2015	5,316	$386	$59.70	$56.18 - $71.98
Q1 2015	5,911	$454	$57.60	$52.93 - $63.03