Dec. 6 at 4:41 PM
$ATOM Yesterday's 'action' appears to me in this Yahoo snapshot to show the first half of the trading day as routine i.e., unmolested- trading which was trending up (although I suspect was actually being subtly manipulated my MMs by accruing shares to sell later- many large blocks from 5K to 25K blocks crossing as BUYs). The second half of the trading day showing the sudden spike in dispersals (volume selling spikes- again with large blocks). With no news/catalysts present, I can only surmise that Frank is tapping the ATM (selling shares).
Yes, it is ONLY my opinion... I'd like to think I'm totally off-base because I did not watch this action live like I usually do- I'm only opining on the snapshot.