I just did a quick check on this week's price and volume. The PR was released on July 25 at 10:18 AM (according to TDA).
July 24 Volume 60 million, open .0008, close .0007
July 25 Volume 321 million, open .0006, close .0007
July 26 Volume 97 million, open .0007, close .0007
July 27 Volume 100 million, open .0006, close .0008
Volume on the 27th was very low until just before close when it about doubled in a few minutes.
Looking more closely, on July 25th (the day the buyback PR was released), most of the volume came during the intervals 10:00-10:30 and 3:00-3:30. On the 26th and 27th, there were small volume spikes during these same 30-minute periods.
Edit: On the 23rd and 24th, before the PR, the stock did not have volume spikes during these periods
If I were of a conspiratorial frame of mind, I'd say WNSH bought big just before releasing the buyback PR, let things calm down to keep the PPS in check, and then bought big into their close (30 minutes before EOD). Thursday and Friday they did the same thing on a smaller scale--a flurry of buying with a period of inactivity between buybacks to forestall a big run.
This is all just speculation, of course. But it's based on the trading behavior and it supports the notion that much has already been bought back.
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