What If You Invested $1,000 in DexCom (DXCM)?
Enter any amount and start date. We use historical prices to show your hypothetical return.
DexCom
DXCM
Historical extremes
Maximum profit (buy at all-time low, sell at peak), maximum drawdown (peak to trough), and total return from IPO to current price.
Max profit
+46753.24% (468.5 times)
- Buy
- Nov 20, 2008
- $0.35
- Sell
- Nov 17, 2021
- $162.82
Buying DXCM at the all-time low and selling at the peak would have turned $1,000 into $468,532.39.
Max drawdown
-94.61% (fell to 5% of peak)
- Peak
- May 4, 2006
- $6.45
- Trough
- Nov 20, 2008
- $0.35
The worst decline for DXCM was -94.61% (fell to 5% of peak) from peak to trough.
IPO to current
+2160.31% (22.6 times)
- IPO
- Apr 14, 2005
- $2.93
- Current
- Mar 16, 2026
- $66.34
A $1,000 investment in DXCM at IPO would be worth $22,603.07 today.
Dollar amounts based on selected investment ($1,000)
Frequently asked questions
What is DexCom (DXCM) stock's all-time high and all-time low?
- DexCom (DXCM) stock's all-time low was $0.35 on Nov 20, 2008. The all-time high was $162.82 on Nov 17, 2021.
What if you invested $1,000 in DexCom (DXCM) stock at the all-time low?
- Buying DexCom (DXCM) stock at the all-time low ($0.35 on Nov 20, 2008) and selling at the peak ($162.82 on Nov 17, 2021) would have turned $1,000 into $468,532.39. Historical return: +46753.24% (468.5 times).
What are DexCom (DXCM)'s best buy and sell dates for maximum profit?
- The best buy date for DexCom (DXCM) stock was Nov 20, 2008 (all-time low at $0.35). The best sell date was Nov 17, 2021 at $162.82. This investment would have returned +46753.24% (468.5 times).
What was DexCom (DXCM) stock's maximum drawdown?
- DexCom (DXCM) stock's worst decline was -94.61% (fell to 5% of peak) from peak to trough. Peak: $6.45 on May 4, 2006. Trough: $0.35 on Nov 20, 2008. A $1,000 investment at the peak would have been worth $53.88 at the trough.
What if you bought DexCom (DXCM) stock at IPO?
- A $1,000 investment in DexCom (DXCM) stock at IPO ($2.93 on Apr 14, 2005) would be worth $22,603.07 today. Historical return: +2160.31% (22.6 times). Current stock price: $66.34 as of Mar 16, 2026.
What if you invested $1,000 in DexCom (DXCM) 5 years ago?
- A $1,000 investment in DexCom (DXCM) stock 5 years ago ($88.66 on Mar 16, 2021) would be worth $748.23 today. Historical return: -25.18% (0.75 times). Current stock price: $66.34 as of Mar 16, 2026.
What if you invested $1,000 in DexCom (DXCM) 10 years ago?
- A $1,000 investment in DexCom (DXCM) stock 10 years ago ($15.06 on Mar 16, 2016) would be worth $4,405.05 today. Historical return: +340.50% (4.41 times). Current stock price: $66.34 as of Mar 16, 2026.
What if you invested $1,000 in DexCom (DXCM) 20 years ago?
- A $1,000 investment in DexCom (DXCM) stock 20 years ago ($5.01 on Mar 16, 2006) would be worth $13,234.91 today. Historical return: +1223.49% (13.2 times). Current stock price: $66.34 as of Mar 16, 2026.
About this data
- 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: buy at all-time low, sell at the highest price after. Max drawdown: the largest peak-to-trough decline in price. IPO to current: 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 from Yahoo Finance, adjusted for stock splits and dividends. We use adjusted close for all calculations.
- 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 DXCM. You can select any date between our first and most recent data point.