I was just looking at the five-day, putting a new stop under this trade since I'm now a good deal into the black and can let go of my trailing stop for a more profit-conserving one and noticed the weird, brief dips to $17.50, exactly, both last Thursday and today. The dips have been really radical for such a low-volume instrument. A 70 cent difference in minutes at such low volume is suspicious-looking. Anyone have a theory or explanation?