Dexcom Inc

DXCMNASDAQ · USD
86.62USD0.00 (-0.98%)
679

Dexcom Inc (DXCM) Historical Volatility

DXCM 30-day historical volatility is 23%. This ranks in the 3th percentile of readings over the past year.

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Tracking DXCM historical volatility helps you see how much Dexcom Inc's stock price has actually moved over past periods, giving you a baseline to judge whether current option premiums are fair, cheap, or expensive. While implied volatility tells you what the market expects, Dexcom Inc's HV tells you what really happened. Use our scanner to monitor DXCM 30 day historical volatility alongside longer lookback windows and spot the moments when realized and implied diverge.

Historical volatility is the annualized standard deviation of an underlying's past returns, typically measured over rolling windows like 10, 20, 30, or 60 days. The DXCM 30 day historical volatility is one of the most widely watched readings because it balances responsiveness with stability. Comparing Dexcom Inc's HV to its implied volatility reveals the volatility risk premium — when IV sits well above HV, option sellers tend to have an edge; when HV runs hot relative to IV, buyers may be underpaying for movement.

DexCom, Inc., a medical device company, focuses on the design, development, and commercialization of continuous glucose monitoring (CGM) systems in the United States and internationally. The company provides its systems for use by people with diabetes, as well as for use by healthcare providers. Its products include DexCom G6, an integrated CGM system for diabetes management; Dexcom Real-Time API, which enables invited third-party developers to integrate real-time CGM data into their digital health applications and devices; Dexcom ONE, that is designed to replace finger stick blood glucose testing for diabetes treatment decisions; and Dexcom Share, a remote monitoring system.

The company's products candidature comprises Dexcom G7, a next generation G7 CGM system. DexCom, Inc. has a collaboration and license agreement with Verily Life Sciences LLC and Verily Ireland Limited to develop blood-based or interstitial glucose monitoring products. The company markets its products directly to endocrinologists, physicians, and diabetes educators. DexCom, Inc. was incorporated in 1999 and is headquartered in San Diego, California.

Sizing a long premium trade, modeling a covered call, or hunting volatility arbitrage all come back to one question: how much has the stock actually moved? Our scanner puts Dexcom Inc's historical volatility side-by-side with implied readings across every lookback window, so you can see exactly where DXCM HV is running hot, cold, or in line. Make the DXCM 30 day historical volatility — and every other window — work for your edge instead of against it.

IV vs HV
Implied Volatility (IV) vs Historical Volatility (HV) over the past month.

As of September 25, 2026

IV - HV Difference
Difference between IV and HV over time. Positive values indicate IV > HV.

As of September 25, 2026

See how volatility has moved over time

Track DXCM historical volatility, spot where IV and realized volatility diverge, and find options that are priced in your favor right now.

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