Compare stock heat maps and stock screeners for discovery — filters narrow the universe; percentile heat maps rank relative strength within peer groups.
Screeners answer who qualifies. Heat maps answer who stands out among peers.
Buydy Research
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Focused on practical screening workflows for investors who want repeatable market context.
Investors often ask whether they need a stock screener or a stock heat map. The honest answer: both, at different stages of the same workflow.
A screener applies rules to a universe: dividend yield above a threshold, valuation below a ceiling, growth signals in a band. The output is a list — names that pass your criteria.
Buydy's ETF screener workflows keep filters persistent so you rebuild the same screen each week instead of exporting stale spreadsheets.
Screeners excel when you know the rules upfront and need to shrink a large universe quickly.
A heat map compares many names at once using relative context. Color and rank reflect percentile standing within sector or industry peers — not just raw magnitude.
Buydy's stock heat map helps you spot outliers after filtering (or across a familiar watchlist) without reading every cell as an isolated number.
Heat maps excel when you need to prioritize among names that already pass basic quality or mandate checks.
A practical sequence:
This avoids two common traps: screening without context (long lists, no priority) and heat-mapping without constraints (pretty color, no mandate fit).
Use screening only when your universe is already small and rules are strict — for example, a fixed watchlist with hard exclusion criteria.
Use heat maps only when you already hold a curated set and need weekly re-ranking — for example, tracking percentile shifts across the same twenty names.
Research summaries, not investment advice.