Option Expiration today which is no doubt driving much of this action. Will close within a couple cents of $21 bc of this. My guess is $21.02 for the close..
Read the lastest headline about the Alibaba IPO being estimated at $80B. Once this becomes more and more headline material, it is going to be obvious that Yahoo's current price assumes core business = $0. At this price you are buying basically the stake in Alibaba and Yahoo Japan. No brainer!!!