it' a TRAP
It often does that, starting negative. The volume is HUGE though for AH!
there was one trade that crossed a few minutes after the close for 1,400,000 shares at $4.08.
EOQ window dressing.
Those shares will be booked as owned in Q2, when the price rose from 2.5 to 4.0, then dumped before the holiday, if not before open Monday.