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Closing prices for 09 October 2026
Next earnings report: 22 October 2026, before market open · Earnings calendar
The series is stated in the current share scale after splits; dividends are not included in the price
Quest Diagnostics Incorporated trades on NYSE under the ticker DGX. The company belongs to the Health care sector. The trading history on this page starts on 22 August 2016.
Over the past 52 weeks DGX has traded between 171.18 $ and 248.84 $. As of 09 October 2026 the price stood 76.99 % of the way from the 52-week low to the high.
Over one year DGX shares rose 27.69 %; over six months they rose 20.60 %. Volatility over 90 days is 25.49 %. Dividends are not included: this is price change only, as of 09 October 2026.
DGX trades at a price-to-earnings ratio of 24.9, above the sector median of 24.8. Price to sales is 2.3, below the sector median of 3.9. Price to book is 3.5, above the sector median of 2.4. Calculated from reports for the period ending 31 March 2026.
| Date | Open | High | Low | Close | Volume, shares |
|---|---|---|---|---|---|
| 09 October 2026 | 227.86 | 232.18 | 228.56 | 230.97 | 775,435 |
| 08 October 2026 | 228.16 | 231.08 | 226.36 | 230.81 | 941,900 |
| 07 October 2026 | 228.51 | 229.80 | 226.81 | 227.06 | 927,400 |
| 06 October 2026 | 229.92 | 232.09 |
Based on the last 12 months of reports, through 31 March 2026
The sector median covers every company in the sector on the US market, loss-making ones included.
Quest Diagnostics is the second national medical laboratory network, living by the same laws of utilisation.
Samples are collected at thousands of draw sites and shipped to large laboratories running automated lines. Fixed costs are high and variable costs low — so each additional test adds almost entirely to profit, while a fall in volume hurts disproportionately.
The company is expanding direct patient access: some tests can be ordered without a doctor's referral and paid for personally, bypassing the insurer. That changes the customary dependence on reimbursement rates, though it remains a small share so far. Risks: government programmes revising fee schedules, competition and technician labour costs. Quest pays a dividend and buys back stock.
Address:500 PLAZA DRIVE, SECAUCUS, NJ, 07094, US
Quest Diagnostics Incorporated reported revenue of 11.3B $ and net income of 1.0B $ over the last four quarters. Net margin is 9.08 %. Revenue changed by +11.03 % year over year. Earnings per share are 9.05 $. Market capitalisation is 25.5B $.
DGX has a return on equity of 13.90 %, above the sector median of −41.68 %. Return on assets is 6.14 %, above the sector median of −32.11 %. Operating margin is 14.27 %, above the sector median of −26.84 %.
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| 225.78 |
| 228.39 |
| 2M |
| 05 October 2026 | 232.93 | 233.65 | 229.96 | 232.22 | 1M |
| 02 October 2026 | 230.58 | 233.48 | 228.83 | 233.33 | 1M |
| 01 October 2026 | 232.74 | 233.33 | 230.47 | 231.09 | 992,200 |
| 30 September 2026 | 233.33 | 236.97 | 230.84 | 233.07 | 1M |
| 29 September 2026 | 235.46 | 237.62 | 230.98 | 231.97 | 2M |
| 28 September 2026 | 234.27 | 238.10 | 233.81 | 237.62 | 1M |
| 25 September 2026 | 236.37 | 238.25 | 235.48 | 236.32 | 741,700 |
| 24 September 2026 | 234.08 | 237.29 | 233.55 | 236.59 | 926,900 |
| 23 September 2026 | 235.12 | 238.62 | 231.92 | 233.00 | 1M |
| 22 September 2026 | 228.59 | 237.29 | 227.24 | 234.76 | 3M |
| 21 September 2026 | 247.13 | 248.84 | 243.93 | 244.88 | 907,600 |
| 18 September 2026 | 246.52 | 247.63 | 244.89 | 246.45 | 2M |
| 17 September 2026 | 248.28 | 248.70 | 246.26 | 247.45 | 989,500 |
| 16 September 2026 | 245.47 | 248.57 | 244.85 | 247.08 | 948,700 |
| 15 September 2026 | 238.39 | 248.65 | 237.21 | 247.08 | 1M |
| 14 September 2026 | 237.49 | 239.78 | 234.67 | 237.89 | 974,700 |