Understandoptions volatilityin a single glance.

You never type your Dhan password on voldash.com — there is no login form on this site at all. Logging in hands you off to Dhan’s own website, where you enter your credentials on Dhan’s domain and approve the access. Only then does Dhan send back a token. Your username, password, positions, trades, and portfolio are never transmitted to me or visible to me. See the Security page for how to verify all of this yourself.

Two things you can check without trusting me. First, when the Dhan login appears, the address bar must read dhan.co — you are on Dhan’s site, not mine. Second, Voldash is registered with Dhan as a partner application with a redirect URL locked to https://www.voldash.com/auth/dhan, so Dhan will only ever return your login to that exact address; a copy of this site on another domain cannot receive it, and that restriction is enforced by Dhan, not by me. Voldash is operated by a registered Indian private limited company whose CIN you can look up on the MCA register and whose GSTIN you can check on the GST portal. Full detail on the Security page.

Sensibull and Opstra are primarily strategy construction, payoff visualisation and trade execution tools. They don’t serve historical metrics beyond a few days or have in-depth volatility metrics. Voldash leans towards analysis of volatility metrics in context of historical data to see how high or low values are, as well as specialised volatility metrics like constant maturity IV percentiles, VRP and more.

No, you only need the API credentials for data. You can trade wherever you like. That said, if you make 30+ F&O orders per month through Dhan, they waive the ₹499/month API fee.

The initial historical sync pulls 5 years of NIFTY option data and takes 15–25 minutes. Leave the tab open. You only do this once. After that, daily updates take seconds.