Openbell
Market scanning, before the open
Set your gap, relative-volume and float thresholds once. Every weekday, thirty minutes before the bell, Openbell sweeps StockAnalysis, Finviz and Yahoo Finance, scores every candidate against your numbers, and puts the survivors on your dashboard — catalyst note attached.
Lands 30 minutes before the open · the free sample is a full scan · no card required
What you receive
An actual weekday run: 153 candidates scored against the thresholds, five past the bar.
Screeners swept every run
Thresholds enforced
How it works
Gap percentage, relative-volume multiple, float ceiling. Saved to your plan and used on every run after that — you never re-key it.
Thirty minutes ahead of the open, StockAnalysis, Finviz and Yahoo Finance are pulled and every candidate — 153 of them on Aug 27 — is scored against your numbers.
Whatever clears lands on your dashboard with its gap, its relative volume and its catalyst, above the coverage stats behind the cut.
Inside every delivery
Every flag carries why it moved — a clearance, an earnings beat, a CFO departure filing. The names with nothing behind them are the ones you can drop first.
No discretion and no favorites. The same gap, volume and float rules run every weekday, whether the tape is interesting or dead.
Each run publishes its own denominator: 153 candidates in, 5 flags out, a 3% flag rate. You always know how much was looked at.
Who's behind this
Running systematic pre-market scans every weekday since 2025.
I used to burn the first ninety minutes of every day rebuilding the same three screener tabs and then guessing why anything had moved. Openbell runs my exact criteria while I'm asleep, and the catalyst note is the part I'd actually pay for. There are no picks in here and no alerts to chase — just the morning's outliers and what happened to them.
Pricing
One run is one full sweep of all three screeners, with catalyst notes and coverage stats. Paid plans include 30 runs — every trading day in a month.
$0.00
1 runs included · one time
Included plan · added automatically after verified sign-in
Sign in to start free$49.00
30 runs included · every 1 day(s) · every 1 month(s)
$99.00
30 runs included · every 1 day(s) · every 1 month(s)
Card handled by Stripe · a failed scan is never counted against your runs · not investment advice — reply to any delivery email for support.
FAQ
No. Openbell reports market data and public catalysts against criteria you set yourself. It never sizes a position, never says buy or sell, and has no opinion on any name it flags. What you do with a flag is entirely your decision.
A screener hands you a filtered table and leaves you to explain every row. Openbell hands you each flag with its catalyst already attached — FDA clearance, earnings beat, CFO departure filing — plus the count of what was screened to get there. And because the thresholds are fixed, this morning's list is directly comparable to last Thursday's.
You get a short list, and the candidates-scanned number so you can tell the difference between a calm tape and a broken scan. The week of Aug 21–27 ran between three and seven flags a day. The run completes before the open either way, and your dashboard updates the moment it does.
One free run of Openbell: the same three screeners, the same catalyst notes, the same coverage stats a paying desk gets tomorrow morning.
Run your free scanBefore the open · no card required