Hey PH 👋 I built PreMarketPrice because every premarket scanner I tried had the same problem: a wall of tickers sorted by % change, with no way to tell a meaningful move from noise. A +8% move on a low-float penny stock is normal. A +4% move on a mega-cap that never moves can be a once-a-year signal. Same list, completely different meaning. So instead of ranking by raw %, every mover gets: • σ-score — how unusual the move is vs that stock's own volatility • RVOL — is the volume actually there • Excess return — move vs its sector and the market • Catalyst detection — we check earnings, analyst actions, and news. If nothing explains the move, the site literally says "No catalyst found" — often the most interesting answer • Quality scores — valuation/growth/profitability/health, so you know what kind of company is moving Everything is free, no signup. There's also a heatmap, earnings calendar, screener, and a dated archive of every trading day's movers. It runs on a self-hosted pipeline and posts notable movers automatically to X/Bluesky. Would love feedback — especially from anyone who trades the premarket session. Happy to answer anything about the data pipeline too. — Dusan

PreMarketPrice

Premarket movers ranked by statistical unusualness

Premarket movers ranked by statistical unusualness