QUEST DIAGNOSTICS INC

Ticker: DGX CUSIP: 74834L100 Class: COMMON STOCK

GAMCO INVESTORS, INC. ET AL's Holding History (CIK: 0000807249)

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

Q3 2019

Shares 3,500 Value ($000) $375 Avg Close $90.53 Range $85.50 - $95.23

Q2 2019

Shares 3,500 Value ($000) $356 Avg Close $84.30 Range $73.99 - $89.95

Period	Shares	Value ($000)	Average Close	Price Range
Q3 2019	3,500	$375	$90.53	$85.50 - $95.23
Q2 2019	3,500	$356	$84.30	$73.99 - $89.95