The trading up or down of pennies at these levels is meaningless...
Stocks at or near 52 week lows always bring in the traders (me included). The downside risk at these levels is minimized and makes for good trading. 50k - 100k share blocks equate to a few thousand in profits per day with just a few pennies of movement.
GTAT will move in a parabolic manner after all the institutions have taken full positions and analysts begin to talk their own book and throw upgrades at the stock. It's coming...85 institutions have increased their positions in GTAT and it's growing...not to mention the growth of 19 new positions like FMR, LLC which has just taken on a 50,080,000 share new position.
It's coming, be patient investors...and traders, keep doing what you're doing!