QUEST DIAGNOSTICS INC

Ticker: DGX CUSIP: 74834L100 Class: COMMON STOCK

COOKE & BIELER LP's Holding History (CIK: 0000024386)

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

Q1 2014

Shares 5,950 Value ($000) $345 Avg Close $42.22 Range $39.75 - $47.66

Q4 2013

Shares 1,748,438 Value ($000) $93,611 Avg Close $46.46 Range $41.12 - $50.21

Q3 2013

Shares 1,829,468 Value ($000) $113,043 Avg Close $46.67 Range $44.29 - $48.97

Q2 2013

Shares 1,878,848 Value ($000) $113,914 Avg Close $46.22 Range $42.87 - $49.18

Period	Shares	Value ($000)	Average Close	Price Range
Q1 2014	5,950	$345	$42.22	$39.75 - $47.66
Q4 2013	1,748,438	$93,611	$46.46	$41.12 - $50.21
Q3 2013	1,829,468	$113,043	$46.67	$44.29 - $48.97
Q2 2013	1,878,848	$113,914	$46.22	$42.87 - $49.18