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Below is a table of the Quest Diagnostics shares outstanding history going back to 1/31/2010:
Also see: DGX Market Cap History DGX YTD Return |
Quest Diagnostics Shares Outstanding History — Quest Diagnostics Share Count Over Time
As of 7/15/2026 Quest Diagnostics has 110.37 million DGX shares outstanding. Investors often track the DGX shares outstanding history to compare shareholder return trends against the change in share count over time.
This page shows DGX share count trends over time, with 66 historical shares outstanding datapoints presented, dating back to 1/31/2010.
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Quest Diagnostics Historical Shares Outstanding: -2.89% CAGR 
Mouse over chart for data details
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| DGX Stock Price Chart |
| About Quest Diagnostics, Inc. |
| Quest Diagnostics Incorporated is a provider of diagnostic information services. Co. provides diagnostic insights from the results of its laboratory testing to enable people, physicians, and organizations to take action to improve health outcomes. It operates through the DIS segment, which provides diagnostic information services to a range of customers within its primary customer channels: physicians, hospitals, and patients and consumers. We show 66 historical shares outstanding datapoints in our coverage of DGX's shares outstanding history. Understanding the changing numbers of Quest Diagnostics shares outstanding — and comprehending the concept of differing number of shares outstanding in general comparing companies like Quest Diagnostics versus peers — is critical for investors. Many "beginner" or "novice" investors will look at one stock trading at a price of $10 per share and another trading at a price of $20 per share and think the latter company is worth twice as much. Of course, that is a completely meaningless comparison without also knowing how many shares outstanding there are for each of the two companies. Furthermore, via issuance of new shares over time, or the repurchase of existing shares, the number of shares outstanding can fluctuate over the course of history. With this page we aim to empower investors researching Quest Diagnostics by allowing them to research Quest Diagnostics shares outstanding history as well as any other stock in our coverage universe. |
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| Quest Diagnostics (DGX) is categorized under the Healthcare sector; to help you further research historical shares outstanding numbers, below are some other companies in the same sector:
DHR Shares Outstanding History DICE Shares Outstanding History DMK Shares Outstanding History DMPI Shares Outstanding History DMRA Shares Outstanding History DMTK Shares Outstanding History DNAY Shares Outstanding History DNLI Shares Outstanding History DNTH Shares Outstanding History DOMH Shares Outstanding History More Healthcare companies » |
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