Guide to buying Quest Diagnostics Incorporated stock in Canada

Quest Diagnostics Incorporated is a diagnostics & research business based in the US. Quest Diagnostics Incorporated stocks (DGX) are listed on the NYSE, and all prices are listed in US Dollars.

Its last market close was $196.08, which is an increase of 0.44% over the previous week. Quest Diagnostics Incorporated employs 46,000 staff and has a trailing 12-month revenue of around $11 billion.

Keep reading to see up-to-date Quest Diagnostics Incorporated stock price and performance data, along with a step-by-step guide for how to buy Quest Diagnostics Incorporated stock in Canada.

Quest Diagnostics Incorporated (DGX) stock summary

Company stock name	Quest Diagnostics Incorporated
Stock ticker symbol	DGX
Exchange	NYSE
Open	$194.58
High	$197.03
Low	$193.81
Close	$196.08
Adjusted closing	$196.08
Volume The number of stocks traded during the day	759,170
52-week stock price range	$155.09 – $213.50
Where to buy Quest Diagnostics Incorporated stock	Buy on CIBC Investor's Edge

The values in this table are accurate as of the market close on March 23, 2026, and all amounts are in USD.

Can I buy Quest Diagnostics Incorporated stock in Canada?

Yes, you can buy Quest Diagnostics Incorporated stock in Canada. You simply need to open a brokerage account with an online trading platform that supports stocks on the NYSE exchange. Platforms like Interactive Brokers will allow you to directly buy Quest Diagnostics Incorporated stock from within Canada.

Dive deeper: Detailed guide on how to buy stocks in Canada

Our top picks for where to buy Quest Diagnostics Incorporated stock

Quest Diagnostics Incorporated stock chart (NYSE: DGX)

This chart tracks Quest Diagnostics Incorporated stock price performance over time.

Quest Diagnostics Incorporated stock price

Quest Diagnostics Incorporated's stock price at the last available market close was $196.08 (as of March 23, 2026). For comparison, a year ago it was $165.66.

Is Quest Diagnostics Incorporated stock a buy or sell right now?

The technical analysis gauge above shows real-time buy or sell ratings and analysis for Quest Diagnostics Incorporated stock based on your selected timeframe. It uses three widely followed indicators—moving averages, oscillators and pivots—but this does not represent investment advice or a guarantee of success. Finder may not concur with these signals and accepts no responsibility for the performance of your stocks.

Can I buy Quest Diagnostics Incorporated stock on the TSX?

No, you cannot buy Quest Diagnostics Incorporated stock on the TSX because Quest Diagnostics Incorporated stock is not listed on the TSX. Instead, Quest Diagnostics Incorporated stock is listed on the NYSE under the symbol "DGX."

That said, if you're wondering how to invest in Quest Diagnostics Incorporated stock in Canada, you still have the option to do so by opening a trading account with a Canadian brokerage that gives you access to NYSE, like Interactive Brokers.

Dive deeper: Our picks for the best stocks to buy right now in Canada

Quest Diagnostics Incorporated stock dividends

Quest Diagnostics Incorporated dividend payout ratio: 33.1% of net profits

Recently Quest Diagnostics Incorporated has paid out, on average, around 33.1% of net profits as dividends. That has enabled analysts to estimate a "forward annual dividend yield" of 1.76% of the current stock value.

This means that, over a year, based on recent payouts (which are sadly no guarantee of future payouts), Quest Diagnostics Incorporated shareholders could enjoy a 1.76% return on their shares in the form of dividend payments. In Quest Diagnostics Incorporated's case, that would currently equate to about $3.20 per share.

While Quest Diagnostics Incorporated's payout ratio might seem fairly standard, it's worth remembering that Quest Diagnostics Incorporated may be investing much of the rest of its net profits in future growth.

Quest Diagnostics Incorporated's next dividend payout is expected around April 20, 2026. To benefit, you'll need to buy Quest Diagnostics Incorporated stocks before April 6, 2026 (the "ex-dividend date").

Quest Diagnostics Incorporated stock performance metrics

Here are some common key metrics for Quest Diagnostics Incorporated stock that analysts often use to help gauge a stock's value—P/E ratio, PEG ratio and EBITDA.

• Quest Diagnostics Incorporated's P/E ratio

  Quest Diagnostics Incorporated's current share price divided by its per-share earnings (EPS) over the past 12 months gives a trailing price/earnings (P/E) ratio of roughly 22x. In other words, Quest Diagnostics Incorporated shares trade at around 22 times recent earnings.

  That's relatively low compared to, say, the trailing 12-month P/E ratio for the NASDAQ 100 at the end of 2019 (27.29). The low P/E ratio could mean that investors are pessimistic about the outlook for the stock or simply that they're under-valued.

• Quest Diagnostics Incorporated's PEG ratio

  Quest Diagnostics Incorporated's price/earnings-to-growth (PEG) ratio is calculated by dividing its P/E ratio by its earnings growth, which comes out to about 1.5581. A lower ratio can suggest a stock offers better value, while a higher ratio may suggest worse value.

  The PEG ratio provides a broader view than the P/E ratio alone, as it factors in Quest Diagnostics Incorporated's expected earnings growth. By accounting for growth, investors can use the PEG ratio to compare the valuations of multiple high-growth companies.

• Quest Diagnostics Incorporated's EBITDA

  Quest Diagnostics Incorporated's EBITDA (earnings before interest, taxes, depreciation and amortization) is $2.2 billion. EBITDA is a measure of a company's overall financial performance and is often used as a proxy for a company's profitability.

Has Quest Diagnostics Incorporated stock ever split?

Quest Diagnostics Incorporated's stocks were split on a 2:1 basis on June 20, 2005. So, if you had owned 1 share the day before before the split, the next day you'd have owned 2 shares. This wouldn't directly have changed the overall worth of your Quest Diagnostics Incorporated stocks, just the quantity.

However, indirectly, the new 50% lower stock price could have impacted the market appetite for Quest Diagnostics Incorporated stocks, which in turn could have impacted Quest Diagnostics Incorporated's stock price.

How volatile is Quest Diagnostics Incorporated stock?

Over the last 12 months, Quest Diagnostics Incorporated's stocks price has ranged from $155.09 to as high as $213.50. Quest Diagnostics Incorporated's beta measurement of stock volatility is 0.63. For comparison, the market () average beta is 1. This would suggest that Quest Diagnostics Incorporated's stocks are less volatile than average (on this exchange).

Some analysists use "beta" to gauge a stock's volatility. Beta is a popular way to measure a stocks volatility in relation to the market. Here is a breakdown of Quest Diagnostics Incorporated's beta stock volatility rating.

Quest Diagnostics Incorporated company and revenue performance

Market Capitalization The total market value of Quest Diagnostics Incorporated's outstanding shares	$21.7 billion
Gross profit (TTM)	$3.7 billion
Operating margin (TTM)	13.97%
Profit margin	8.99%
Revenue (TTM)	$11 billion
Return on assets (TTM)	6.20%
Return on equity (TTM)	14.75%
Earnings per share (TTM)	$8.74
50-day moving stock price average The average share price over the last 50 days	$195.42
200-day moving stock price average The average share price over the last 200 days	$183.46

All dollar amounts in this table are in USD. TTM refers to the "trailing 12 months." All values are accurate as of the market close on March 23, 2026.

Quest Diagnostics Incorporated company profile

Quest Diagnostics Incorporated provides diagnostic testing and services in the United States. The company develops and delivers diagnostic information services, such as routine, non-routine and advanced clinical testing, anatomic pathology testing, and other diagnostic information services.

It also provides services under the Quest Diagnostics brand, as well as under the AmeriPath, Dermpath Diagnostics, ExamOne, and Quanum brands to physicians, hospitals, patients and consumers, health plans, government agencies, employers, retailers, pharmaceutical companies and insurers commercial clinical laboratories, and accountable care organizations through a network of laboratories, patient service centers, phlebotomists in physician offices, call centers and mobile phlebotomists, nurses, and other health and wellness professionals. In addition, the company offers risk assessment services for the life insurance industry; healthcare IT healthcare providers and payers; testing and medical director services at hospital laboratories; test offerings in cardiometabolic and endocrine; cancer; clinical drug monitoring and toxicology; infectious disease, including autoimmune; neurology diagnostics, including Alzheimer's disease; and women's health, such as prenatal genetic; workplace drug testing, testing urine, hair, and oral fluid specimens services; and employer population health services, including biometric screenings, flu shots, and related preventative services.

Further, it provides population health solutions; extended care services; develops in vitro diagnostic tests; laboratory diagnostic information and digital health connectivity systems; underwriting support services, including data gathering, paramedical examinations, and clinical laboratory testing and analytics; and national specimen collection and health data solutions. Quest Diagnostics Incorporated was founded in 1967 and is headquartered in Secaucus, New Jersey.

• Common company-related questions about Quest Diagnostics Incorporated

  What percentage of Quest Diagnostics Incorporated is owned by insiders or institutions?
  Currently 0.406% of Quest Diagnostics Incorporated stocks are held by insiders and 100.048% by institutions.

  How many people work for Quest Diagnostics Incorporated?
  Latest data suggests 46,000 work at Quest Diagnostics Incorporated.

  When does the fiscal year end for Quest Diagnostics Incorporated?
  Quest Diagnostics Incorporated's fiscal year ends in December.

  Where is Quest Diagnostics Incorporated based?
  Quest Diagnostics Incorporated's address is: 500 Plaza Drive, Secaucus, NJ, United States, 07094

  What is Quest Diagnostics Incorporated's ISIN number?
  Quest Diagnostics Incorporated's international securities identification number is: US74834L1008

  What is Quest Diagnostics Incorporated's CUSIP number?
  Quest Diagnostics Incorporated's Committee on Uniform Securities Identification Procedures number is: 74834L100

Compare trading platforms to buy Quest Diagnostics Incorporated stock

Compare special offers, low fees and a wide range of investment options among popular trading platforms in Canada. Note that the dollar amounts in the table below are in CAD.

Related: Compare the best stock trading platforms in Canada

Do I have to pay tax on gains from Quest Diagnostics Incorporated stock sales in Canada?

Yes, you'll need to pay taxes in Canada on investment income, which includes any profit from selling Quest Diagnostics Incorporated stock. The CRA taxes investment income from stocks in Canada based on three main factors:

1. Investment income. Investment income includes money earned from interest, dividends or capital gains, which may affect how much you have to pay in taxes on stock sales in Canada.
2. Investor type. Your investment income will be taxed differently depending on whether you're a regular investor or a day trader (which means you buy and trade stocks on a daily basis as your primary form of income).
3. Tax bracket. The higher your tax bracket, the more you'll pay on income from stock sales. Your tax bracket depends on your gross income (minus deductions).

You can learn more about the tax implications of selling stocks in Canada here.

Frequently asked questions about Quest Diagnostics Incorporated stock

• Can I buy Quest Diagnostics Incorporated stock directly as a Canadian investor?

  Yes, Canadian investors can buy Quest Diagnostics Incorporated stock directly through various online brokerage platforms available in Canada. You can compare trading platform options and fees for buying Quest Diagnostics Incorporated stock in our table here.

• How much is Quest Diagnostics Incorporated stock worth?

  As of the last market close (on March 23, 2026), Quest Diagnostics Incorporated stock is worth $196.08 per share.

• Can Canadians buy American stocks?

  Yes, Canadians can buy American stocks through Canadian trading platforms that give access to American stock exchanges such as the NYSE and Nasdaq. The good news is that most Canadian brokerage platforms, like Questrade, Interactive Brokers, Moomoo and Wealthsimple, give access to US exchanges. Read our full guide on how to buy US stocks in Canada to learn more.

• Can I buy fractional shares of Quest Diagnostics Incorporated stock?

  Yes, it may be possible to buy fractional shares of Quest Diagnostics Incorporated stock depending on the trading platform you're signed up with. Fractional shares can allow you to invest in Quest Diagnostics Incorporated stock even when you can't afford its full share price. You can read our full guide to how fractional shares work to learn more.

  The table below shows trading apps in Canada that offer fractional shares:

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