RingCentral Inc

RNGNYSE · USD
78.66USD+3.96 (+5.31%)
8810

RingCentral Inc (RNG) Historical Volatility

RNG 30-day historical volatility is 44%. This ranks in the 27th percentile of readings over the past year.

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Tracking RNG historical volatility helps you see how much RingCentral 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, RingCentral Inc's HV tells you what really happened. Use our scanner to monitor RNG 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 RNG 30 day historical volatility is one of the most widely watched readings because it balances responsiveness with stability. Comparing RingCentral 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.

RingCentral, Inc. provides software-as-a-service solutions that enable businesses to communicate, collaborate, and connect in North America. The company offers business cloud communications and contact center solutions based on its Message Video Phone? platform. Its products include RingCentral Office that provides communication and collaboration across various modes, including high-definition voice, video, SMS, messaging and collaboration, conferencing, online meetings, and fax; RingCentral Contact Center, a collaborative contact center solution that delivers omni-channel; and RingCentral Engage Digital, a digital customer engagement platform that allows enterprises to interact with their customers.

The company's products also comprise RingCentral Engage Voice, a cloud-based outbound/blended customer engagement platform for midsize and enterprise companies; RingCentral Video, a video meeting service which includes our RCV video and team messaging capabilities and offers video and audio conferencing, file sharing, contact, task, and calendar management. In addition, it offers RingCentral Professional, a cloud based virtual telephone service that provides inbound call answering and management services for professionals; and RingCentral Fax that provides online fax capabilities. The company serves a range of industries, including financial services, education, healthcare, legal services, real estate, retail, technology, insurance, construction, hospitality, and state and local government, as well as others. It sells its products through a network of direct sales representatives, as well as sales agents, resellers, and channel partners. RingCentral, Inc. has strategic partnerships with Alcatel-Lucent Enterprise; and Vodafone Business. The company was incorporated in 1999 and is headquartered in Belmont, 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 RingCentral Inc's historical volatility side-by-side with implied readings across every lookback window, so you can see exactly where RNG HV is running hot, cold, or in line. Make the RNG 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 30, 2026

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

As of September 30, 2026

See how volatility has moved over time

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

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