It's a time when the MM can buy through shares available on the market from long funds without retail interference. It's why the price rises so hard on such little volume. The bid/ask spread is wide in AH.

When it drops AH like today, that's the same phenomenon in reverse. But it's a more natural profit taking.

I think that moving in one big go after hours is a logical way that the MM is getting through a chunk of short positions.

This serves as a show of strength for the accumulation process and a precursor to markup. The primary differences between AMC/GME and the other PCO stocks are the extent to which the MM is short and the extent to which big money has been interested in accumulation. Both are exceptional in these regards.

I suspect that the initial AMC short position closing, along with GME, will happen after hours and will be violent like BBBY and NAKD as well.

They might not be as short lived, but it could be +180% and back to +15% in two hours, I don't know.

This is not to say it's "the squeeze", it's a type of squeeze. And it's not the main event coming up where we could see 220-450. It's not MOASS. Not claiming anything like that.

Just my thoughts on your question.