Privacy Policy

Last updated: June 2026

What we collect

ArbStack does not require you to create an account or provide any personal information to use the tool. All calculations run in your browser — no input data (shares, prices, tax rates) is sent to or stored on our servers.

We may collect basic, anonymised usage data through our hosting infrastructure (such as page views and general geographic region) solely for the purpose of understanding how the tool is used. This data is not linked to any individual.

Cookies

We may use cookies and similar technologies to help the Site function and to understand how it is being used. This may include essential cookies required for site delivery as well as analytics cookies. By continuing to use the Site, you consent to our use of cookies in accordance with this policy.

Third-party data sources

The app fetches live market data from the following third-party services:

Finnhub — live MSTR share price
CoinGecko — live BTC price
Strategy API (strategy.com) — Enterprise Value mNAV

These requests are made server-side via our API. No personal data is transmitted to these providers as part of normal use.

Contact form

If you use the contact form, your name, email address, and message are transmitted via FormSubmit and forwarded to our contact email. This information is used solely to respond to your enquiry and is not stored or shared with third parties.

Changes to this policy

We may update this policy from time to time. The date at the top of this page reflects the most recent revision. Continued use of the site constitutes acceptance of the updated policy.

Contact

Questions about this policy? Contact us here.