QUEST DIAGNOSTICS INC

Ticker: DGX CUSIP: 74834L100 Class: COMMON STOCK

HighVista Strategies LLC's Holding History (CIK: 0001335325)

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

Q4 2018

Shares 2,800 Value ($000) $233 Avg Close $81.26 Range $68.45 - $93.85

Q3 2018

Shares 4,300 Value ($000) $464 Avg Close $94.62 Range $90.13 - $99.79

Q2 2018

Shares 3,100 Value ($000) $341 Avg Close $89.48 Range $82.55 - $100.07

Q1 2018

Shares 3,400 Value ($000) $341 Avg Close $87.50 Range $81.42 - $92.99

Q4 2017

Shares 3,800 Value ($000) $374 Avg Close $80.65 Range $76.65 - $87.31

Q3 2017

Shares 4,800 Value ($000) $449 Avg Close $89.87 Range $77.62 - $95.26

Q2 2017

Shares 5,200 Value ($000) $578 Avg Close $89.16 Range $81.72 - $94.33

Period	Shares	Value ($000)	Average Close	Price Range
Q4 2018	2,800	$233	$81.26	$68.45 - $93.85
Q3 2018	4,300	$464	$94.62	$90.13 - $99.79
Q2 2018	3,100	$341	$89.48	$82.55 - $100.07
Q1 2018	3,400	$341	$87.50	$81.42 - $92.99
Q4 2017	3,800	$374	$80.65	$76.65 - $87.31
Q3 2017	4,800	$449	$89.87	$77.62 - $95.26
Q2 2017	5,200	$578	$89.16	$81.72 - $94.33