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The top plot is the raw share. The bottom is that same share expressed as a z-score — how far this week sits from the symbol's own normal. Above about 1.5 is unusually elevated. Watch for a sustained rise here with no matching move in price.

The open-market confirmation. Compare it against dark share above: dark building while CMF stays negative is incomplete confluence — accumulation off-exchange that on-exchange buying has not yet backed up.

CUSUM accumulates each week's excess dark share, so it rises only when elevation persists rather than spiking once. The thesis wants the top plot climbing while the bottom one stays flat.