The Chart Guys Price Shear and Abnormal Volume Alerts all rolled into 1 FREE indicator
Based on TCG Price Shear V2 by urisma and Volume Spikes by OstapChester
This powerful script combines Abnormal Volume Alerts with Price Shear which can be based on either ATR or % deviation from an ema, which intern can also be filtered by Abnormal Volume for less false...
Here is a script to know when big dumps, and pumps, are happening.
Meant for crypto (I know that's what most people are interested in - it's a mistake) and small caps.
Might work for other things have not checked.
With some random small cap: