DGX
Quest Diagnostics, Inc.
NYSE · Healthcare · Medical - Diagnostics & Research · US
$247.06
−1.50%Price chart
Oct 5Oct 8Oct 13Oct 16Oct 21Oct 26Oct 29Nov 3
Key dataNov 3, 2026
Open$249.32
From 52W high−2.32%
Volume1.06M
Market cap$27.18B
P/E (TTM)24.3x
P/S (TTM)2.3x
Div yield1.37%
Key dataNov 3, 2026
Open
$249.32
From 52W high
−2.32%
Volume
1.06M
Market cap
$27.18B
ValuationView details →
P/E (Fwd)
21.3x
EV/EBITDA
14.4x
P/E (TTM)
24.3x
RSI (14)
66.6
MomentumView details →
1D Return
−1.50%
YTD Return
+44.69%
SummaryUpdated Sep 1, 2026
Quest Diagnostics Incorporated (NYSE:DGX) is one of the largest clinical laboratory testing companies in the United States, founded in 1967 and headquartered in Secaucus, New Jersey. The company went public in 1996 and has grown through both organic expansion and strategic acquisitions to become a dominant player in the diagnostic testing industry. Quest operates a nationwide network of laboratories and patient service centers, providing essential diagnostic information services to healthcare providers, patients, and other stakeholders across the healthcare ecosystem.
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QUEST DIAGNOSTICS INC confirmed that a cyberattack compromised personal and health data stored in its systems, with the number of affected patients unspecified.12d agoQUEST DIAGNOSTICS INC disclosed unauthorized access to its Quanum Lab Services Manager, with certain patient records believed to have been accessed; the scope remains under investigation.13d agoQUEST DIAGNOSTICS INC shares fell in pre-market trading.13d ago