A 2% drop in the major indexes doesn't explain an 11% drop in ASTC. It simply got ahead of itself. I wouldn't be surprised to see it fall below $3.
The next filing should be out in about 3 1/2 weeks and that will have a big impact on the price. A modest profit is baked into the price. If it's a loss, look out below. If it's another 1 1/4 million or more, I think we'll see $5+/share.
Being ASTC however, it's risky to buy or sell your entire position at once. Then again, that's true of most exchange traded stocks.