Stock Screener False-Positive Checklist

A screener is only a sorting tool. It can surface candidates, but it cannot tell you whether the business quality, liquidity, valuation, and catalyst context actually fit your process. This page is educational and process-focused. It does not tell you what to trade or which security fits your account. The point is to slow down, write the assumptions, and make the risk easier to review.

The simple concept

A useful checklist does three jobs: it defines the decision, it turns the risk into numbers, and it creates a review trail. Without that structure, traders tend to remember the part of the setup that felt good and forget the friction that made the result harder.

For Bucko readers, the better question is not, "Can I find a setup?" It is, "Can I explain the setup, size it, stress it, and review it without changing the story after the fact?"

The math that matters

Example: a screen returns 80 stocks. You have time to review 10. If 60 of the 80 are low-quality matches because the filter is too loose, the useful hit rate is only 25%. Tightening the screen from 80 to 25 names can be better if 12 are legitimate research candidates. The goal is not more names; it is a cleaner research queue.

The exact numbers will vary by broker, contract, liquidity, account type, tax situation, and market conditions. The habit is the durable part: use simple math before the decision becomes emotional.

Practical checklist

• ▸Save the exact filters used so you can diagnose what attracted weak matches.
• ▸Tag every rejected name with a reason: liquidity, one-time earnings, leverage, dilution, valuation, cyclicality, or missing catalyst.
• ▸Check average dollar volume and bid-ask behavior before doing deep work.
• ▸Compare the screen metric with at least one quality metric and one balance-sheet metric.
• ▸Review the rejected list monthly to improve the filter instead of trusting the first output.

A decision framework

Score the idea from 1 to 5 on four dimensions:

• ▸Clarity: can you explain the decision in one sentence?
• ▸Friction: have you measured spreads, costs, taxes to review, or account constraints?
• ▸Exit: do you know what happens at target, invalidation, and time limit?
• ▸Review: will your notes show whether the process was disciplined?

A low score does not mean you failed. It means the plan needs to be smaller, simpler, or better researched.

Common mistakes

• ▸Treating a low P/E as cheap without checking earnings quality.
• ▸Ignoring share dilution, debt, or one-time gains that made the screen look attractive.
• ▸Researching too many names instead of improving the filter.
• ▸Letting a momentum screen become a reason to skip thesis work.

How Bucko fits

Bucko works best as an educational research, journaling, scenario-analysis, and guardrail workspace. Use it to save assumptions, tag decisions, compare scenarios, and review the process after the outcome is known. The tool should make your workflow cleaner; it should not take responsibility away from you.