It was meant to happen for the following reasons:
1) A lot of hands with much lower entry points that did not have the incentive to sell until now because YFI kept going up.
2) YFI has a good technology and patents but most users are used to what they have and are happy; it may take a long time for new users to appreciate YFI technology.
3) Will they run out of cash eventually if nothing happens?
4) No significant news with all the volume and SP appreciation.
5) Day traders looking at MBO becuase of some good articles...