Stock listing
NYSE:DGX Quest Diagnostics Incorporated Stock
Home listing (NYSE) of Quest Diagnostics Incorporated
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Share price · NYSE:DGX
$251.82 USD -1.10 (-0.4%)
Close on Oct 30, 2026
- Day range
- $250.95 – $256.99 USDOct 30, 2026
- Volume
- 919,448 sharesOct 30, 2026
- Market cap
- $27.79B USDAt the close on Oct 30, 2026 · price × 110.4M shares outstanding
- 52-week range
- $171.18 – $256.99 USDLowest and highest trades, Oct 31, 2025 – Oct 30, 2026
- Traded on an average day
- $235.7M USDMedian day 930,059 shares · last 3 months, Jul 30, 2026 – Oct 30, 2026
Prices by listing
| Listing | Last | Change | Volume | Open | High | Low | Previous close | Price from |
|---|---|---|---|---|---|---|---|---|
| NYSE:DGX · Home | $251.82 USD | -1.10 (-0.4%) | 919,448 | $255.14 | $256.99 | $250.95 | $252.92 | Close on Oct 30, 2026 |
| Frankfurt:QDI | €225.30 EUR | +8.40 (+3.9%) | — | €225.30 | €225.30 | €225.30 | €216.90 | Close on Oct 30, 2026 |
| LSE:0KSX | $241.53 USD | +5.316 (+2.3%) | 2,453 | $237.00 | $245.90 | $237.00 | $236.21 | Close on Oct 27, 2026 |
| Munich:QDI | €216.80 EUR | +2.00 (+0.9%) | — | €216.80 | €216.80 | €216.80 | €214.80 | Close on Oct 27, 2026 |
| Dusseldorf:QDI | €224.30 EUR | +7.70 (+3.6%) | — | €225.60 | €225.70 | €224.30 | €216.60 | Close on Oct 30, 2026 |
| Stuttgart:QDI | €217.80 EUR | +1.90 (+0.9%) | — | €216.90 | €218.00 | €215.10 | €215.90 | Close on Oct 27, 2026 |
Daily closes
Last 3 months, Jul 30, 2026 – Oct 30, 2026 · NYSE:DGX · USD, adjusted for splits
| Day | Close | Change | % | Open | High | Low | Volume |
|---|---|---|---|---|---|---|---|
| $251.82 | -1.10 | -0.4% | $255.14 | $256.99 | $250.95 | 919,448 | |
| $252.92 | +7.30 | +3.0% | $246.25 | $253.12 | $245.40 | 945,889 | |
| $245.62 | +3.06 | +1.3% | $242.96 | $249.73 | $242.34 | 932,691 | |
| $242.56 | -0.39 | -0.2% | $241.96 | $243.27 | $239.59 | 918,930 | |
| $242.95 | +1.06 | +0.4% | $243.00 | $244.22 | $240.98 | 959,509 | |
| $241.89 | -1.39 | -0.6% | $239.63 | $244.33 | $239.63 | 933,272 | |
| $243.28 | +4.35 | +1.8% | $226.50 | $246.00 | $226.22 | 1,685,901 | |
| $238.93 | +1.81 | +0.8% | $235.34 | $240.56 | $223.50 | 1,205,063 | |
| $237.12 | +2.21 | +0.9% | $236.00 | $237.29 | $234.06 | 1,104,090 | |
| $234.91 | -0.09 | 0.0% | $234.40 | $235.99 | $233.82 | 864,513 | |
| $235.00 | -4.15 | -1.7% | $239.67 | $240.75 | $233.56 | 799,540 | |
| $239.15 | +5.72 | +2.5% | $235.85 | $239.17 | $235.57 | 1,002,728 | |
| $233.43 | +2.97 | +1.3% | $231.32 | $234.97 | $231.32 | 1,201,550 | |
| $230.46 | -2.17 | -0.9% | $233.13 | $234.33 | $230.23 | 1,010,231 | |
| $232.63 | +1.66 | +0.7% | $228.66 | $234.64 | $228.66 | 865,230 | |
| $230.97 | +0.16 | +0.1% | $227.86 | $232.18 | $227.86 | 775,460 | |
| $230.81 | +3.75 | +1.7% | $228.16 | $231.08 | $226.36 | 941,876 | |
| $227.06 | -1.33 | -0.6% | $228.51 | $229.80 | $226.81 | 927,427 | |
| $228.39 | -3.83 | -1.6% | $229.92 | $232.09 | $225.78 | 1,784,071 | |
| $232.22 | -1.11 | -0.5% | $232.93 | $233.65 | $229.96 | 1,014,262 | |
| $233.33 | +2.24 | +1.0% | $230.58 | $233.48 | $228.83 | 1,100,862 | |
| $231.09 | -1.98 | -0.8% | $232.74 | $233.33 | $230.47 | 992,175 | |
| $233.07 | +1.10 | +0.5% | $233.33 | $236.97 | $230.84 | 1,093,356 | |
| $231.97 | -5.65 | -2.4% | $235.46 | $237.62 | $230.98 | 1,536,906 | |
| $237.62 | +1.30 | +0.6% | $234.27 | $238.10 | $233.81 | 1,036,021 | |
| $236.32 | -0.27 | -0.1% | $236.37 | $238.25 | $235.48 | 741,726 | |
| $236.59 | +3.59 | +1.5% | $234.08 | $237.29 | $233.55 | 926,898 | |
| $233.00 | -1.76 | -0.7% | $235.12 | $238.62 | $231.92 | 1,129,646 | |
| $234.76 | -10.12 | -4.1% | $228.59 | $237.29 | $227.24 | 2,719,288 | |
| $244.88 | -1.57 | -0.6% | $247.13 | $248.84 | $243.93 | 907,605 | |
| $246.45 | -1.00 | -0.4% | $246.52 | $247.63 | $244.89 | 1,925,637 | |
| $247.45 | +0.37 | +0.1% | $248.28 | $248.70 | $246.26 | 989,497 | |
| $247.08 | 0.00 | 0.0% | $245.47 | $248.57 | $244.85 | 948,753 | |
| $247.08 | +9.19 | +3.9% | $238.39 | $248.65 | $237.21 | 1,373,615 | |
| $237.89 | +2.87 | +1.2% | $237.49 | $239.78 | $234.67 | 974,850 | |
| $235.02 | +3.88 | +1.7% | $233.20 | $235.12 | $229.33 | 997,025 | |
| $231.14 | -4.32 | -1.8% | $236.32 | $236.48 | $228.57 | 1,090,546 | |
| $235.46 | -0.04 | 0.0% | $233.58 | $236.24 | $232.43 | 791,149 | |
| $235.50 | -1.64 | -0.7% | $233.61 | $237.56 | $231.52 | 728,935 | |
| $237.14 | -2.26 | -0.9% | $235.38 | $238.92 | $235.38 | 798,704 | |
| $239.40 | -1.40 | -0.6% | $242.00 | $242.00 | $236.35 | 1,043,291 | |
| $240.80 | +4.58 | +1.9% | $238.03 | $242.84 | $236.27 | 1,144,114 | |
| $236.22 | -4.08 | -1.7% | $242.72 | $243.72 | $235.63 | 813,392 | |
| $240.30 | -2.46 | -1.0% | $241.99 | $242.64 | $239.40 | 1,358,258 | |
| $242.76 | -1.85 | -0.8% | $245.17 | $245.28 | $242.27 | 639,937 | |
| $244.61 | -0.39 | -0.2% | $242.83 | $247.19 | $242.44 | 839,989 | |
| $245.00 | +0.49 | +0.2% | $244.11 | $246.00 | $243.49 | 811,024 | |
| $244.51 | +0.64 | +0.3% | $243.93 | $245.78 | $241.79 | 709,151 | |
| $243.87 | -0.52 | -0.2% | $243.97 | $246.00 | $242.46 | 837,736 | |
| $244.39 | +3.09 | +1.3% | $240.33 | $244.70 | $239.43 | 1,263,229 | |
| $241.30 | -0.46 | -0.2% | $239.86 | $245.68 | $237.53 | 1,139,473 | |
| $241.76 | +5.51 | +2.3% | $238.10 | $242.39 | $237.38 | 924,012 | |
| $236.25 | +0.73 | +0.3% | $238.01 | $239.38 | $236.07 | 693,609 | |
| $235.52 | +1.12 | +0.5% | $233.94 | $237.17 | $233.00 | 614,271 | |
| $234.40 | -1.64 | -0.7% | $235.82 | $237.70 | $233.69 | 541,802 | |
| $236.04 | -1.73 | -0.7% | $239.10 | $240.00 | $235.65 | 549,033 | |
| $237.77 | +0.27 | +0.1% | $234.46 | $238.51 | $232.28 | 686,871 | |
| $237.50 | -0.13 | -0.1% | $236.35 | $239.92 | $235.51 | 847,026 | |
| $237.63 | -0.72 | -0.3% | $236.53 | $239.33 | $235.85 | 856,190 | |
| $238.35 | -0.15 | -0.1% | $236.34 | $239.38 | $236.34 | 574,521 | |
| $238.50 | +2.66 | +1.1% | $237.66 | $238.88 | $235.32 | 642,223 | |
| $235.84 | +2.12 | +0.9% | $234.22 | $236.67 | $232.56 | 674,201 | |
| $233.72 | +1.77 | +0.8% | $231.95 | $234.55 | $229.76 | 903,998 | |
| $231.95 | -1.06 | -0.5% | $232.84 | $233.44 | $230.54 | 839,251 | |
| $233.01 | -1.29 | -0.6% | $234.00 | $235.29 | $232.01 | 872,677 | |
| $234.30 | -0.92 | -0.4% | $230.91 | $235.61 | $229.01 | 947,709 |
- Ticker
- NYSE:DGX
- Asset type
- Stock
- Sector
- Health care
- Industry
- Health care services
- Exchange
- NYSE
- Currency
- USD
What changed lately
Latest news release · Oct 22, 2026
Quest Diagnostics Reports Third Quarter 2026 Financial Results; Raises Revenue and EPS Guidance for Full Year 2026
Latest earnings call · Oct 22, 2026
Quest Diagnostics (NYSE:DGX) Q3 2026 Earnings Call
Replay and transcript
Latest deck · Oct 22, 2026
Q3 2026 Earnings Presentation
Earnings · 21 slides
Calls
Replays
Quest Diagnostics (NYSE:DGX) Q3 2026 Earnings Call
Thu, Oct 22, 2026 · 8:30 AM ET
Watch TranscriptQuest Diagnostics (NYSE:DGX) Q2 2026 Earnings Call
Thu, Jul 23, 2026 · 8:30 AM ET
Watch TranscriptQuest Diagnostics (NYSE:DGX) Q1 2026 Earnings Call
Tue, Apr 21, 2026 · 8:30 AM ET
Watch Transcript
Latest news
Quest Diagnostics Reports Third Quarter 2026 Financial Results; Raises Revenue and EPS Guidance for Full Year 2026
Oct 22, 2026
Closed $243.28 (+1.8%) on Oct 22, 2026
Haystack MRD® Demonstrates Robust Clinical Performance in Specimen Cohort from the Landmark DYNAMIC Colorectal Cancer Trials
Oct 1, 2026
Closed $231.09 (-0.8%) on Oct 1, 2026
Quest Diagnostics to Release Third Quarter Financial Results on October 22, 2026
Sep 22, 2026
Closed $233.00 (-0.7%) on Sep 23, 2026
Nearly 1 in 3 Patients with Suspected Lyme Disease are Co-Positive for Other Tick-Borne Pathogens, Finds Study by Quest Diagnostics
Sep 21, 2026
Closed $244.88 (-0.6%) on Sep 21, 2026
Nine in 10 Voters Express Concern That Medicare Lab Payment Cuts Will Harm Patient Access to Diagnostic Lab Testing, Finds National Survey from Quest Diagnostics
Sep 16, 2026
Closed $247.08 (0.0%) on Sep 16, 2026
Apple Health app Users to be Able to Order Labs from Quest Diagnostics
Sep 9, 2026
Closed $231.14 (-1.8%) on Sep 10, 2026
Quest Diagnostics to Speak at the Baird 2026 Global Healthcare Conference
Aug 25, 2026
Closed $244.51 (+0.3%) on Aug 25, 2026
Humanity Brings Biological Age Analysis to the U.S. Through questhealth.com
Aug 25, 2026
Closed $244.51 (+0.3%) on Aug 25, 2026
Quest Diagnostics to Speak at the Morgan Stanley 24th Annual Global Healthcare Conference
Aug 24, 2026
Closed $243.87 (-0.2%) on Aug 24, 2026
Quest Diagnostics to Offer FDA-Cleared Roche pTau217 Blood Test to Assess Alzheimer's Disease Pathology
Aug 24, 2026
Closed $243.87 (-0.2%) on Aug 24, 2026
Decks
Q3 2026 Earnings Presentation
Earnings · 21 slides · Oct 22, 2026
Q2 2026 Earnings Presentation
Earnings · 7 slides · Jul 23, 2026
Q1 2026 Earnings Presentation
Earnings · 20 slides · Apr 21, 2026
Q4 2025 Earnings Presentation
Earnings · 23 slides · Feb 10, 2026
Quest Diagnostics Incorporated on 6ix
- Sector
- Health care
- Industry
- Health care services
- News releases
- 44 in the last 12 months · 72 in all · newest Oct 22, 2026 · oldest 2025
- Calls
- 27 calls with a replay · 27 with a transcript · latest Oct 22, 2026
- Decks
- 71 decks · latest Oct 22, 2026
Where Quest Diagnostics Incorporated is listed
| Listing | Exchange | Country | Currency |
|---|---|---|---|
| NYSE:DGX · Home listing · This page | NYSE | United States | USD |
| Tradegate:QDI | Tradegate | Germany | EUR |
| gettex:QDI | gettex | Germany | EUR |
| Frankfurt:QDI | Frankfurt | Germany | EUR |
| BMV:DGX | BMV | Mexico | MXN |
| LS Exchange:904533 | LS Exchange | Germany | EUR |
| Lang & Schwarz:904533 | Lang & Schwarz | Germany | EUR |
| LSE:0KSX | LSE | United Kingdom | USD |
| BOATS:DGX | BOATS | United States | USD |
| Milan:1QDX | Milan | Italy | EUR |
| BIVA:DGX | BIVA | Mexico | MXN |
| B3:Q1UE34 | B3 | Brazil | BRL |
| Munich:QDI | Munich | Germany | EUR |
| Dusseldorf:QDI | Dusseldorf | Germany | EUR |
| Hanover:QDI | Hanover | Germany | EUR |
| BX Swiss:QDI | BX Swiss | Switzerland | CHF |
| Stuttgart:QDI | Stuttgart | Germany | EUR |
| Xetra:QDI | Xetra | Germany | EUR |
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