Range Low Price High Price Comment
30 days $191.02 $207.50 Tuesday, 23rd Jun 2026 DGX stock ended at $197.18. This is 1.86% more than the trading day before Monday, 22nd Jun 2026. During the day the stock fluctuated 1.87% from a day low at $194.15 to a day high of $197.78.
90 days $186.23 $209.60
52 weeks $164.65 $213.50

Historical Quest Diagnostics Incorporated prices

Date Open High Low Close Volume
Jun 23, 2026 $194.94 $197.78 $194.15 $197.18 696 941
Jun 22, 2026 $194.12 $195.16 $192.90 $193.58 878 894
Jun 18, 2026 $196.69 $197.44 $192.83 $195.00 1 171 931
Jun 17, 2026 $200.00 $201.04 $196.50 $197.76 530 305
Jun 16, 2026 $203.03 $204.70 $199.66 $201.04 781 962
Jun 15, 2026 $202.25 $203.20 $200.37 $202.18 693 665
Jun 12, 2026 $205.53 $205.96 $202.38 $203.06 657 241
Jun 11, 2026 $204.07 $207.50 $202.54 $203.83 863 890
Jun 10, 2026 $204.87 $207.30 $202.97 $203.78 570 144
Jun 09, 2026 $197.90 $204.79 $196.99 $204.53 726 635
Jun 08, 2026 $202.08 $202.08 $196.70 $197.21 522 767
Jun 05, 2026 $197.41 $201.54 $197.31 $200.29 816 170
Jun 04, 2026 $194.99 $201.99 $194.99 $196.12 735 926
Jun 03, 2026 $193.00 $195.21 $192.38 $193.67 648 100
Jun 02, 2026 $192.93 $193.31 $191.02 $193.16 678 596
Jun 01, 2026 $194.14 $196.48 $191.85 $192.20 609 501
May 29, 2026 $196.59 $197.38 $194.30 $194.90 623 162
May 28, 2026 $194.03 $196.78 $193.91 $196.20 472 438
May 27, 2026 $193.68 $196.32 $192.57 $193.99 476 925
May 26, 2026 $194.26 $194.69 $192.35 $192.98 655 999
May 22, 2026 $193.99 $196.92 $193.99 $195.09 0
May 21, 2026 $192.73 $193.82 $189.00 $193.82 335 943
May 20, 2026 $191.87 $194.85 $190.40 $193.75 744 222
May 19, 2026 $187.50 $191.15 $187.06 $190.39 590 931
May 18, 2026 $187.64 $191.16 $187.25 $189.84 624 582

FAQ

What are historical stock prices?
Historical stock prices refer to a stock’s recorded prices at various past points. These prices include several key figures that help investors and analysts evaluate a stock’s performance over time:
Open: Open price for the trading day.
High: Highest price for the trading day.
Low: Lowest price for the trading day.
Close: Close price for the trading day.

Additionally, historical prices often include:
Volume is the number of shares traded during the day. It indicates how actively a stock was traded and can provide insights into market sentiment and liquidity.

How can I use DGX stock historical prices to predict future price movements?
Trend Analysis: Examine the DGX stock’s historical trends to identify patterns that might continue.
Moving Averages: Use moving averages to detect potential reversal points.
Momentum Indicators: Apply indicators like RSI or MACD to assess the momentum and strength of price movements.
Volume Analysis: Analyze trading volume alongside price changes to gauge trend strength.
Statistical Methods: Use statistical tools such as regression analysis to model and forecast future prices based on past data.
These techniques can provide insights but should be used with risk management practices to mitigate potential losses.

What impact do stock splits have on historical price data?
When a company performs a stock split, it adjusts the historical price data to reflect the new, lower trading price as if it had always been that way.

This ensures consistency for anyone analyzing the stock’s past prices. The adjustment helps prevent misleading signals on charts, such as false sell signals or bearish trends that aren’t there. For instance, in a 2-for-1 stock split, the price per share is cut in half, which would otherwise appear as a dramatic drop on the chart. If someone didn’t know about the split, they might wrongly think something negative happened to the company. Most technical indicators would also react to this apparent drop by signaling to sell.

A stock split, while making the shares seem more affordable and potentially more attractive to investors, doesn’t alter the company’s fundamental value.

Why do the DGX stock historical prices show a range for periods like 30 days, 90 days, and 52 weeks?
The range provides the lowest and highest prices at which the stock has traded during the specified period. This helps investors understand the stock’s volatility and price variability within that timeframe.

How can I use historical price volatility to assess risk?
High price volatility historically indicates higher risk and potentially higher returns. Investors can gauge the stock’s risk level by examining the range between high and low prices over various periods.
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ABOUT QUEST DIAGNOSTICS INCORPORATED
Quest Diagnostics
Quest Diagnostics Incorporated provides diagnostic testing, information, and services in the United States and internationally. The company develops and delivers diagnostic information services, such as routine testing, non-routine and advanced clinical testing, anatomic pathology testing, and other diagnostic information services. It offers diagnostic information services primarily under the Quest Diagnostics brand, as well as under the AmeriPat...
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