Percent Change Alerts
Percent change alerts fire based on how much a stock has moved in a single day — not where it is in absolute terms. Set a threshold (±3%, ±5%, ±10%) and get notified whenever any stock you're watching has an unusual daily move.
Get notified when any stock triggers a Percent Change signal
Search for a stock and set your Percent Change alert in seconds.
How Percent Change Alerts Work
Percent change alerts answer the question: "Did anything in my universe move significantly today?" Rather than watching absolute price levels, these alerts track relative daily performance — catching earnings reactions, news catalysts, and unusual intraday moves.
A 5% daily move on a $10 stock and a 5% move on a $500 stock both trigger the same alert — it's the magnitude of the move that matters, not the dollar value. This makes percent change alerts ideal for scanning across diverse portfolios or watchlists where absolute prices vary widely.
Stock Alarm Pro supports bidirectional percent change alerts. Set a +5% threshold to catch bullish gap-ups, or a -5% threshold to get risk management alerts when positions are moving against you. Combine with volume alerts to distinguish news-driven moves from random noise.
Related Alert Types
Frequently Asked Questions
- Is the percent change calculated from the previous close or from the open?
- Stock Alarm Pro calculates percent change from the previous trading session's close, matching the standard daily change metric. Pre-market gaps are captured as soon as prices are available.
- What percent threshold should I use for alerts?
- For large-cap stocks: 3–5% is unusual. For mid-caps and volatile tech names: 5–8%. For small-caps and high-beta stocks: 8–15%. Set the threshold based on the stock's historical daily volatility (ATR gives you a good sense of normal range).
- Can I set both upside and downside percent change alerts?
- Yes. You can set separate thresholds for upward moves (e.g., alert me if up more than 5%) and downward moves (alert me if down more than 5%) on the same stock.
- Does this work for ETFs and indices?
- Yes. Percent change alerts work on any instrument in Stock Alarm Pro — stocks, ETFs, indices, and commodities. Monitoring major index moves (S&P 500 ±2%) is useful as a macro risk management trigger.
Technical indicators are provided for informational purposes only and do not constitute investment advice. Past signal performance is not indicative of future results. Always conduct your own research before making investment decisions.