• Sorry, was dealing with an insurance adjuster, so could only give cryptic answer. I use breadth as a peek below the hood of the market. It can provide a view into the underlying strength or weakness of a move, but it is secondary to price. Still, when there is a gap down like this morning with positive breadth, it can cast some doubt on the amount of follow-through to be expected. The bottom panel is where you can see the conviction of a move. 2:1 or 3:1 ratios are fair. Ratios of 5:1 to 8 or 9:1 show strong conviction

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I dropped a screenshot of post into GPT and asked "what is this chart telling me?"    Here's the response: 

Sorry, was dealing with an insurance adjuster, so could only give cryptic answer. Here is a definition of volume breadth: Volume breadth is often measured using the Up/Down Volume ratio, which compares the volume of stocks that are rising to the volume of stocks that are falling. A high Up/Down Volume ratio indicates a bullish sentiment, while a low Up/Down Volume ratio indicates a bearish sentiment.

The bottom panel in those charts shows the ratio of up volume to down volume. This can provide a view into the underlying strength of a move, but it is secondary to price.