UBS Sell and $17 target!, page-69

Not an expert but the daily low is a support $33.4/$33.5
Next one is the trend in orange low $32
Final one would be $29 which was the double top and breakout point.

If i was a holder I'd be topping up on those levels with relatively tight stop losses if it broke through.
A non holder might prefer to wait for a bounce off those levels on volume.

I've fundamentally thought APT has been overvalued for a long time. That the risk's regarding tighter regulations in the sector, compounded with competitors increasing customer base/exposure may limit the blue sky long term profitability many investors believe. I've been categorically wrong to date as the S/P has went up 300% since then. But perhaps this is a small market realization of that risk.

Certainly going to be a traders paradise. worth watching the open shorts to see if the UBS has got momentum.

Good luck to all.