Policies
Privacy Policy
What we keep, why, and who sees it. Last updated November 12, 2026.
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Who we are
ETF Portfolio Mechanics is a subsidiary of Bowman Capital Management LLC (“BCM”). BCM is responsible for the data described here.
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Your account
Your email address, and your Seeking Alpha username if you joined through Seeking Alpha, so we can match you to the group’s member list. Your password is stored only as a one-way hash; we can’t read it.
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Payments
Stripe takes your card. We never see or store card numbers. We keep your plan, its status and renewal date, and your Stripe customer ID.
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How the tools are used
To see which tools get used, we log the page, the tab or feature, your device type (phone, tablet or desktop) and your account ID, plus the tickers you look up in ETF Research, ETF Compare, Stock-to-ETF Lookup and the ETF Screener.
We don’t log IP addresses, browser details, or anything you type into Portfolio X-Ray or the Income Hub. Portfolios you save in Portfolio X-Ray stay in your own browser and never reach us. Backtester setups you save are kept on your account so you can open them on any device.
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Emails
We email you your sign-in, password resets and account notices. If you turn on the Income Hub’s weekly email, we keep the tickers and share counts you gave it, and every email has an unsubscribe link. If you send a bug report, we keep what you wrote with your email so we can reply.
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Cookies
Workbench sets one cookie to keep you signed in, for up to 300 days. If you arrive at www.useworkbench.io through a creator’s link, a cookie keeps their code for 90 days so they’re credited if you buy. That page counts visits without cookies or IDs.
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Who else sees it
Stripe (payments), Netlify (hosting) and Resend (email) handle data on our behalf. Creators who referred you see counts and dollar amounts only, never your name or email. We don’t sell your data.
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Your choices
Email etfpm@bowmancm.com to see what we hold about you, correct it, or have your account deleted.