Privacy Policy

There are no accounts or sign-ins. The site does not ask for your name, email address, phone number or any other information that identifies you directly.

If you email us, the address and message are used only to reply and are deleted once they are no longer needed.

• Your watchlist, portfolio (share counts and average cost) and its backup copies, the watchlist change log, and your view and theme settings are stored in your browser’s localStorage. The board’s filter and sort are kept in sessionStorage and cleared when the tab closes. None of this is sent to our servers.
• Moving My Sigma data from the old address happens directly between two windows of your browser, or through a backup file you save yourself. It does not pass through our servers.
• You can remove all of it at any time by clearing this site’s data in your browser. It does not sync between devices.
• A watchlist share link contains ticker symbols only.

• sigma-locale remembers the language you chose, for one year.
• Advertising cookies may be set by the ad providers described in section 5.
• You can block cookies in your browser settings; some preferences such as language will then not be remembered.

We use Vercel Web Analytics to see aggregate figures such as page views, referrers, countries and device or browser types. It uses no third-party cookies; visitors are distinguished only by a hash of the request that is discarded after 24 hours, so no individual is identified. We also count how often features are used, such as how many symbols a watchlist holds, but never send ticker names, share counts or amounts.