Tandem Diabetes Care Inc
Tandem Diabetes Care Inc (TNDM) Historical Volatility
TNDM 30-day historical volatility is 55%. This ranks in the 20th percentile of readings over the past year.
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Tracking TNDM historical volatility helps you see how much Tandem Diabetes Care 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, Tandem Diabetes Care Inc's HV tells you what really happened. Use our scanner to monitor TNDM 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 TNDM 30 day historical volatility is one of the most widely watched readings because it balances responsiveness with stability. Comparing Tandem Diabetes Care 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.
Tandem Diabetes Care, Inc., a medical device company, designs, develops, and commercializes various products for people with insulin-dependent diabetes in the United States and internationally. The company's flagship product is the t:slim X2 insulin delivery system, a pump platform that comprises t:slim X2 pump, its 300-unit disposable insulin cartridge, and an infusion set. It also provides t:slim X2 insulin with Basal-IQ and control IQ technology; t:slim X2 with G5 Integration; and Tandem Device Updater, a tool that allows users to update their pump's software. In addition, the company offers t:connect, a web-based data management application, which provides a visual way to display diabetes therapy management data from the pump, continuous glucose monitoring, and supported blood glucose meters for users, their caregivers, and their healthcare providers; and Sugarmate, a mobile app for people with diabetes who use insulin.
It has development and commercialization agreements with Dexcom, Inc. and Abbott Laboratories. The company was formerly known as Phluid Inc. and changed its name to Tandem Diabetes Care, Inc. in January 2008. Tandem Diabetes Care, Inc. was incorporated in 2006 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 Tandem Diabetes Care Inc's historical volatility side-by-side with implied readings across every lookback window, so you can see exactly where TNDM HV is running hot, cold, or in line. Make the TNDM 30 day historical volatility — and every other window — work for your edge instead of against it.
As of September 25, 2026
As of September 25, 2026
See how volatility has moved over time
Track TNDM historical volatility, spot where IV and realized volatility diverge, and find options that are priced in your favor right now.
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