Small Cap Scanner Setup Guide: The Exact Filters That Find Runners

By SNACS Trade · 2026-04-08T08:00:19.552277+00:00

Step-by-step guide to setting up a small cap stock scanner for day trading. Exact filter combinations, sort criteria, and alert configurations.

Small Cap Scanner Setup Guide: The Exact Filters That Find Runners

A stock scanner is only as good as its configuration. Most traders either over-filter (zero results) or under-filter (too much noise). Here are the exact scanner setups that consistently find the day's biggest small cap runners.

Scanner Setup 1: Morning Momentum (Primary)

This is the bread-and-butter scan that every small cap day trader should run from market open.

Filters:

Sort: Percent change (descending)

When to use: 9:30 AM - 11:00 AM ET. This captures the morning momentum plays — stocks gapping up on overnight news and pre-market catalysts.

What you'll see: 10-30 tickers depending on market conditions. On volatile days, you'll see more. On slow days, fewer. Quality over quantity — focus on the top 5-10.

Scanner Setup 2: Pre-Market Gappers

Run this scan starting at 7:00 AM ET to build your watchlist before market open.

Filters:

Sort: Pre-market change (descending)

When to use: 7:00 AM - 9:30 AM ET. This gives you 2.5 hours to research catalysts, check SEC filings, and plan entries for each gapper.

Pro tip: The best gappers have a clear news catalyst. Gaps without news are often dumps waiting to happen.

Scanner Setup 3: Volume Spike Alert

This scanner catches stocks that suddenly start moving mid-day — the "second wind" plays.

Filters:

Sort: RVOL (descending)

When to use: 11:00 AM - 3:30 PM ET. The morning scan catches opening plays. This catches mid-day catalysts, news reactions, and afternoon squeeze setups.

Scanner Setup 4: Float Rotation Watch

This specialized scan identifies stocks where the entire float has turned over — maximum supply exhaustion.

Filters:

Sort: Volume/Float ratio (descending)

When to use: Anytime during market hours. Stocks approaching or exceeding 100% float rotation have extreme supply dynamics that can produce explosive breakouts.

How to Avoid Scanner Overload

Run One Primary + One Alert

Don't run 5 scanners simultaneously. Pick one primary scanner (Setup 1 for morning, Setup 3 for afternoon) and one alert-based scanner that notifies you of specific conditions.

Use Playbook-Based Alerts

Instead of watching a scanner all day, define your setups in a playbook builder with specific multi-condition triggers. When a ticker matches ALL your conditions simultaneously, you get an alert — no screen-watching required.

Set Sound Alerts for New Entries

Configure your scanner to play a sound when a new ticker appears. This lets you focus on chart analysis while the scanner monitors the market in the background.

Fine-Tuning Your Filters

Too Many Results?

Tighten RVOL (5x instead of 3x), raise the price floor ($1 instead of $0.50), or add a minimum dollar volume filter ($500K+).

Too Few Results?

Lower RVOL to 2x, expand the price range to $15, or reduce the percent change threshold to 3%.

Wrong Kind of Results?

If you're seeing too many low-quality tickers, add a market cap floor ($10M+) to filter out shell companies and pre-revenue microcaps.

Scanner + Research Integration

The scanner tells you WHAT is moving. Research tells you WHY. For every scanner hit:

  1. Check the catalyst — news, SEC filing, sector move
  2. Check the float — low float = more explosive
  3. Check the SEC filings — any active dilution risk?
  4. Check the chart — is there a clean entry setup?

This 60-second checklist separates quality opportunities from noise. For more on setting up screener filters, see our dedicated guide. Over time, it becomes second nature.

Tracking Scanner Performance

Your scanner setup should evolve based on results. Track in your trading journal:

After 50-100 trades per scanner setup, you'll have enough data to objectively evaluate and refine your configurations.