Charts are a picture of the past activity. All else is guessing what might happen from what you see in them, indicator-wise.
Players who have real time charts have the edge, as they see current activity to the minute.
Obviously players needed profits today for whatever reason, maintain liquidity, take out cash because they think it won't keep going, they want to ride free on whatever shares are left over after their sells, ect.
Sells come for so many reasons your guess is as good as mine.
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