What If You Invested $1,000 in Quest Diagnostics (DGX)?
Enter any amount and start date. We use historical prices to show your hypothetical return.
Historical extremes
What if you bought at the best or worst time? Check max profit, max drawdown, and total return since IPO.
Max profit
+8,343%
(84.4 times)
- Buy
- Dec 17, 1996
- $2.51
- Sell
- Feb 27, 2026
- $211.91
Buying DGX at the best price and selling at the peak would have turned $1,000 into $84,426.29.
Max drawdown
49.46%
(fell to 51% of peak)
- Peak
- May 3, 2002
- $33.97
- Trough
- Feb 14, 2003
- $17.17
A $1,000 investment in DGX at the peak would have shrunk to $505.45 at the trough.
Return since IPO
+7,443%
(75.4 times)
- IPO
- Dec 17, 1996
- $2.51
- Current
- Apr 29, 2026
- $189.32
A $1,000 investment in DGX at IPO would be worth $75,426.29 today.
Frequently asked questions
What is Quest Diagnostics (DGX) stock's all-time high (ATH) and all-time low (ATL)?
- Quest Diagnostics (DGX) stock's all-time low (ATL) was $2.51 on Dec 17, 1996. The all-time high (ATH) was $211.91 on Feb 27, 2026.
What if you invested $1,000 in Quest Diagnostics (DGX) stock for maximum profit?
- Buying Quest Diagnostics (DGX) stock at the best price ($2.51 on Dec 17, 1996) and selling at the peak ($211.91 on Feb 27, 2026) would have turned $1,000 into $84,426.29. Historical return: +8,342.63% (84.4 times).
What are Quest Diagnostics (DGX)'s best buy and sell dates for maximum profit?
- The best buy date for Quest Diagnostics (DGX) stock was Dec 17, 1996 at $2.51. The best sell date was Feb 27, 2026 at $211.91. This investment would have returned +8,342.63% (84.4 times).
What was Quest Diagnostics (DGX) stock's maximum drawdown?
- Quest Diagnostics (DGX) stock's worst decline was 49.46% (fell to 51% of peak) from peak to trough. Peak: $33.97 on May 3, 2002. Trough: $17.17 on Feb 14, 2003. A $1,000 investment at the peak would have been worth $505.45 at the trough.
What if you bought Quest Diagnostics (DGX) stock at IPO?
- A $1,000 investment in Quest Diagnostics (DGX) stock at IPO ($2.51 on Dec 17, 1996) would be worth $75,426.29 today. Historical return: +7,442.63% (75.4 times). Current stock price: $189.32 as of Apr 29, 2026.
What if you invested $1,000 in Quest Diagnostics (DGX) 5 years ago?
- A $1,000 investment in Quest Diagnostics (DGX) stock 5 years ago ($119.75 on Apr 29, 2021) would be worth $1,580.96 today. Historical return: +58.10% (1.58 times). Current stock price: $189.32 as of Apr 29, 2026.
What if you invested $1,000 in Quest Diagnostics (DGX) 10 years ago?
- A $1,000 investment in Quest Diagnostics (DGX) stock 10 years ago ($62.2 on Apr 29, 2016) would be worth $3,043.73 today. Historical return: +204.37% (3.04 times). Current stock price: $189.32 as of Apr 29, 2026.
What if you invested $1,000 in Quest Diagnostics (DGX) 20 years ago?
- A $1,000 investment in Quest Diagnostics (DGX) stock 20 years ago ($40.61 on Apr 28, 2006) would be worth $4,661.91 today. Historical return: +366.19% (4.66 times). Current stock price: $189.32 as of Apr 29, 2026.
Data & methodology
How does the investment calculator work?
- Enter an investment amount and a start date. We use historical stock prices to calculate how many shares you would have bought, then apply the current price to show your hypothetical portfolio value and return.
What are Historical extremes?
- Max profit: the best buy and sell dates that maximize percentage return. Max drawdown: the largest peak-to-trough decline in price. Return since IPO: total return from IPO date to the latest price.
What is Max drawdown?
- Maximum drawdown is the largest peak-to-trough decline in price. It shows the worst drop from any prior high to a subsequent low. Peak and Trough are the dates and prices at which this decline occurred.
Does this include dividends?
- The calculator uses adjusted closing prices when available, which account for stock splits and dividends. For the most accurate results, we recommend using data that includes dividend adjustments.
Where does the price data come from?
- Historical prices are dividend-adjusted closing prices from our data provider. The calculator and Historical extremes use the same data source for consistent results.
How are the dollar amounts in the cards calculated?
- The dollar amounts in Historical extremes use the investment amount you select in the calculator above (e.g. $1,000). They show what your investment would have been worth at the Buy/Peak/IPO date versus the Sell/Trough/Current date.
What date range can I use?
- The available date range depends on our historical price data for DGX. You can select any date between our first and most recent data point.
Explore more
DGX Overview
Company profile, financial tools, and key metrics
DGX Revenue Counter
Earns $357.62 every second. See per minute, hour, and day.
DGX Earnings Counter
Earns $32.47 per second net profit. See per minute, hour, and day.
DGX Economic Scale
Exceeds Monaco's GDP. Compare with world economies.
DGX How It Makes Money
Discover visual breakdown of $11.28B in revenue — where it comes from and where it goes.
DGX Stock Seasonality
Best and worst months to invest. Historical monthly returns heatmap.
DGX Price Target Scenarios
Model bear, base, and bull cases with EPS growth and exit P/E — pre-filled from analysts and history.
DGX Daily Price Character
Steady · 50.6% historical win rate (green days). Streaks & record days.
DGX Buybacks
2.09% TTM buyback yield. Shareholder yield & SBC comparison.
DGX Stock Split History
2 splits on record. Dates, ratios, and cumulative multiple.
DGX Dividend Profile
Yield: 1.72%. Safety: 5/8. See full history.
DGX Dividend Calculator
How much dividend income would $1,000 have earned? Calculate from any date.
DGX Dividend Forecast
Project future income with DRIP, growth assumptions, and optional monthly contributions.
DGX Financials
Revenue, EPS, EBITDA, market cap, debt and balance sheet history with annual and quarterly data.