NYSE:W   Wayfair Inc.
What is going on with this?

I see a massive selloff down to $20, then sellers had exited. This caused price to sharply reverse, as buyers came in. A bounce ensued and would have been unsurprising, but it has not stopped.

In five weeks, W is up 500%, up from $20 to almost $140. Can someone explain better what is going on here?
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