My data feed indicated that was a trade 100k AH. MMs tend to shake really hard to the down side when they have large orders to fill. I suspect you witnessed institutional accumulation today on a low float-China-fertilizer-accelerating revenue-acelerating earnings stock. Now you can expect low volume for a few days and then a repeat of the process at higher prices. As a savy retail investor, you get into position on the long side.
Hold The Trade!