About
The public-formula stock scanner.
Tapeline is a quantitative stock scanner that publishes its 6-factor scoring formula and back-checks every top-10 daily pick against the next-day SPY-relative move. The point isn't the formula — anyone can copy a weighted equation. The point is that you can audit it.
Why this exists
Tapeline started as the internal scoring engine for a personal trading bot. The bot worked, but every prosumer scanner the founder paid for over five years had two problems: the formula was a black box, and the published track record was either non-existent or curated to hide the misses. Both are solvable with discipline, not technology.
Tapeline solves both: the full 6-factor formula with exact weights is on the methodology page, and every top-10 daily pick auto-publishes to the public scorecard with the realized next-day return vs SPY. Whether you stay or leave, you make that call from the data — not from a marketing page.
Who built it
Tapeline is built by a solo founder with a decade of software engineering experience and an active personal trading workflow. The same scoring engine powers a production trading bot used daily; Tapeline is the productized version.
For press, partnership, or anything that needs a human: press@tapeline.io. For product or billing support: support@tapeline.io.
Transparency timeline
Public formula + public scorecard from day one
Tapeline launches with the 6-factor weighted equation published in full and every top-10 pick auto-back-checked vs SPY the following day.
Engine running in production for personal use
The scoring engine that powers Tapeline ran for ~12 months as a personal trading bot, including paper-trading via Alpaca and live-data feeds from Massive (formerly Polygon.io), Finnhub, Quiver, and FRED.
Where else to find us
Profile graph — same brand, same content, same handles where possible.
rel="me" on each profile link is the standard attribution pattern Google uses to validate that all of these accounts represent the same entity.
Frequently asked
Who built Tapeline?
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Tapeline is built by a solo founder with a decade of trading and software engineering experience. The same scoring engine that powers Tapeline runs the founder's personal trading bot — public scorecard included.
Why publish the formula?
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Two reasons. First, trust compounds when you can audit — if you spot a ticker scoring 90 on a clearly broken setup, you can call it out. Second, the moat isn't the formula (anyone can copy it); the moat is the data spine plus the public scorecard back-checking every call. We'd rather compete on accountability than IP.
Why publish the scorecard?
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Newsletter shops have known for 30 years that hiding losers is the easiest way to look better than you are. Mark Hulbert built a career being the only neutral grader of newsletter performance because everyone else hid the data. Tapeline auto-publishes every top-10 daily pick with the realized next-day return vs SPY at /scorecard. If the model stops working, you should know.
Is Tapeline a registered investment adviser?
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No. Tapeline publishes descriptive analytics ("this name scores 82, signal STRONG SETUP, fundamentals up, trend confirming") rather than prescriptive recommendations ("buy this"). The label transitions when the data does — we never tell you what to do with it. See /legal/risk for the full disclosure.
How is Tapeline funded?
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Tapeline is bootstrapped and funded entirely by subscription revenue. No external investment, no advertising on the site, no affiliate kickbacks on the comparison pages.
How do I reach the team?
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Customer support: support@tapeline.io. Press inquiries: press@tapeline.io. We respond within one business day on paid plans, two on free. Status page at /status shows live system health.
See the public scorecard.
The receipts are at /scorecard. The methodology is at /how-it-works. The free trial is at /signup.