IDK about Ferti but I fully expected a pullback today but what was suprising how quickly it came back. You always see pullbacks after big jumps as the stocktraders take their 30% and run, but this showed some real mettle today and investors/managers with a little less risk tolerance are getting more comfortable with this story.
Another factor is that the BFS is complete and in hand and some people know what's in it. The company said it would be done by the end of 2012, and that they would review it and release the results in early 2013. I'm not claiming insider trading, but the NR about the water was not really new as results were given out piecemeal as they occured so the share price jump seemed excessive, however things do get leaked out.