Why? Even if it does move back up in 6 months you will just break even and wasted all the time holding. You should sell it now, take the losses, and move the money into the stocks which are in the up trend with momentum. Time is money. Don't waste it in waiting.
Wow. That is some kind of devotion. I would look at it as though I had just bought it today and when it returns to 689, you will have a better than 50% return on your money. Not bad for most investors.