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Quest Diagnostics Inc (DGX) stock

DGXNYSEServices-Medical LaboratoriesFiscal year ends December 31
Financials through Q2 FY2026, quarter ended Jun 30, 2026Last filing: 10-Q on Oct 23, 2026Score 12/300% above fair value
$251.82−1.10 (-0.43%)

Close on Oct 30, 2026Market cap $27.79BP/E 26.8Yield –

Price history

Quest Diagnostics share prices for every trading day, newest first. Adjusted for stock splits, not for dividends.

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Close, Oct 30, 2026
$251.82
-0.43% on the day
52-week range
$171.18 – $256.99
-2.0% from the high
Change over 52 weeks
+43.3%
From $175.75 on Oct 30, 2025
Average volume
1.02M
Shares a day, last 90 sessions
DateOpenHighLowCloseChangeVolume
Oct 30, 2026$255.14$256.99$250.95$251.82-0.43%919,589
Oct 29, 2026$246.25$253.12$245.40$252.92+2.97%946,275
Oct 28, 2026$242.96$249.73$242.34$245.62+1.26%932,796
Oct 27, 2026$241.96$243.27$239.59$242.56-0.16%919,017
Oct 26, 2026$243.00$244.22$240.98$242.95+0.44%959,622
Oct 23, 2026$239.63$244.33$239.63$241.89-0.57%933,382
Oct 22, 2026$226.50$246.00$226.22$243.28+1.82%1,686,025
Oct 21, 2026$235.34$240.56$223.50$238.93+0.76%1,205,190
Oct 20, 2026$236.00$237.29$234.06$237.12+0.94%1,104,176
Oct 19, 2026$234.40$235.99$233.82$234.91-0.04%864,648
Oct 16, 2026$239.67$240.75$233.56$235.00-1.74%799,647
Oct 15, 2026$235.85$239.17$235.57$239.15+2.45%1,002,728
Oct 14, 2026$231.32$234.97$231.32$233.43+1.29%1,201,550
Oct 13, 2026$233.13$234.33$230.23$230.46-0.93%1,010,231
Oct 12, 2026$228.66$234.64$228.66$232.63+0.72%865,230
Oct 9, 2026$227.86$232.18$227.86$230.97+0.07%775,460
Oct 8, 2026$228.16$231.08$226.36$230.81+1.65%941,876
Oct 7, 2026$228.51$229.80$226.81$227.06-0.58%927,427
Oct 6, 2026$229.92$232.09$225.78$228.39-1.65%1,784,071
Oct 5, 2026$232.93$233.65$229.96$232.22-0.48%1,014,262
Oct 2, 2026$230.58$233.48$228.83$233.33+0.97%1,100,862
Oct 1, 2026$232.74$233.33$230.47$231.09-0.85%992,175
Sep 30, 2026$233.33$236.97$230.84$233.07+0.47%1,093,356
Sep 29, 2026$235.46$237.62$230.98$231.97-2.38%1,536,906
Sep 28, 2026$234.27$238.10$233.81$237.62+0.55%1,036,021
Sep 25, 2026$236.37$238.25$235.48$236.32-0.11%741,726
Sep 24, 2026$234.08$237.29$233.55$236.59+1.54%926,898
Sep 23, 2026$235.12$238.62$231.92$233.00-0.75%1,129,646
Sep 22, 2026$228.59$237.29$227.24$234.76-4.13%2,719,288
Sep 21, 2026$247.13$248.84$243.93$244.88-0.64%907,605

Seasonality

DGX return in each calendar month over the last 10 years, including dividends. The current month runs to the latest close.

YearJanFebMarAprMayJunJulAugSepOctNovDec
Average1.1%-0.5%-0.8%6.5%1.6%1.7%2.5%0.9%-2.2%1.8%3.4%-0.6%
Months up7 of 103 of 106 of 107 of 106 of 107 of 106 of 107 of 103 of 107 of 108 of 95 of 9
20268.3%13.3%-7.5%-0.5%0.4%8.7%10.4%3.1%-3.0%8.4%
20258.6%6.0%-2.1%5.8%-2.7%3.6%-6.4%8.5%4.9%-7.3%7.5%-8.3%
2024-6.4%-2.8%6.6%4.4%2.7%-3.6%4.5%10.3%-1.1%0.2%5.1%-7.3%
2023-4.7%-6.8%2.3%-1.4%-4.4%6.0%-3.3%-2.7%-7.3%7.4%5.5%0.5%
2022-21.6%-2.8%4.3%-1.7%5.4%-5.7%3.2%-8.2%-2.1%17.7%5.7%3.0%
20218.9%-10.5%11.0%3.3%-0.2%0.2%8.0%7.8%-4.9%1.5%1.3%16.4%
20204.1%-4.2%-24.3%38.2%7.4%-3.7%12.0%-12.5%2.9%7.2%1.5%-3.9%
20195.6%-0.9%3.9%7.8%-0.5%6.2%0.8%0.3%4.6%-4.9%5.2%0.2%
20187.9%-2.6%-2.7%1.4%5.3%3.2%-1.6%2.1%-1.9%-12.4%-5.9%-6.0%
20170.5%6.0%0.8%7.9%3.1%2.2%-2.2%0.0%-13.6%0.6%5.0%0.0%