CF Industries Holdings Inc. (CF) opened at 146.50. So far today, the stock has hit a low of 145.30 and a high of 151.91. CF is now trading at 149.53, up 7.13 (4.87%). The stock hit its 52 week high of 172.99 in June and set its 52 week low of 44.16 in August. CF has been moving upwards for the past year. CF Industries Holdings shares have been rising in today's market as a Credit Suisse analyst upped the stock to "Outperform" from "Neutral," ...(Click the story link or go to http://www.marketintelligencecenter.com for the full story)