After Hours weirdness, can anyone provide an explination?

I observe this phenomenon fairly often (but not every day.) Trading view won't let me publish a chart below this time frame, but it actually happens on the one minute time frame or less. Can anyone explain what is going on here?

My best hypothesis is that some whale entered into an agreement with with their broker intra day (while the market is open) to buy or sell after the market closes (or perhaps whenever they want) at a specific price that existed at that time, while the market was open, when the agreement was made. And then they are cashing in on it.

Anyone else have any other ideas, or knowledge about this weird after hours phenomenon?
afterhoursBeyond Technical Analysis

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