If you are sure the movie will earn more, and it will adjust higher than its present price, then don't worry about the movements up or down, and just ride out the roller coaster.
I often see the price of movies go all over the board a week or so before they open... part of the reason for this is that traders may be "jockey-ing for positions on them... should they long them, or short them?
If you are confident in a movie, and you own the stock 'long' and you feel it will adjust UP from it's present price, then don't fret...you'll get your reward when opening weekend comes.
The point becomes with the old HSX acronym: "PPDM" Price Paid Doesn't Matter, since the only time price DOES become an issue is right before a stock halts for opening weekend. IF the price at that time is lower than you think it will adjust UP to, then by all means, keep it long. IF you think it will NOT adjust UP at that time, then maybe it's best to short the stock.
After 10+ years here, I still only get 50-60% right on my opening weekend guesses, so you have to go with YOUR gut... ride out the roller coaster prices in between cause they don't matter...the only time the price matters is right before halt. You can make JUST as much money as anyone else if it adjust up or down 5 points once the stock halts.
So hang in there, and don't worry about prices - until opening weekend comes.