To measure intraday breath, I would find super useful to have a tool that measures new highs and new lows of the stocks on intraday basis. It would measure % of stocks making new highs on intraday basis and number of stocks making new lows on intraday basis, and how many new highs and new lows per second there are. Here is the tool: https://www.trade-ideas.com/guide/chapter/13/13Compare_Count_Window.html , and here an example of how it looks https://twitter.com/PradeepBonde/status/1538131407448559616