Ghetto, I think it depends on whether you are investing in the company or trading the shares. If you are trading I would guess most would say to cut losses. If you are really investing, see how the news affects your valuation of the company, and only if you still project a good return with the new numbers, hold or add.
Devastating Blow This is sad but you now have to view POSS rationally as if it were a "new investment opportunity" -- that having been said you would probably view it for the first time today as simply a "dead money" stock for the near term while other hurt investors bail out as well and take their losses. If that's the picture, you wouldn't invest in it today -- so why hold it any further-- it's dead money for you just as well as others. Occasional big losses are just part of the game, but you can recover with the empathy, help and goodwill of your trader friends.
At this point it may be better to just hold. It could fall to the $16 area if the general market was to tank but that may not be likely. Better luck to you.
Ghetto look at this pnf chart. Poss could easily drop to 16-18 and you would not want to see 12, but so far it is only falling back to the bullish support line on a longer term chart. You have taken the major hit it seems already. Maybe each month sell covered calls and yet protect with a few puts as well. Btw if you see 12 on it you could see 5.50 ish.