•  CF Industries (CF) announced plans to sell 10.8 million shares for about $1 billion
  •  Tennant Company (TNC) said it sees first quarter earnings of 19 cents to 21 cents a share, well above Street estimates of 7 cents, and revenues of between $148 million and $150 million, beating estimates of $140 million
  •  Fastenal (FAST) reported first quarter earnings of 38 cents a share, versus Zacks estimates of 33 cents and up from last year's 33 cents on revenues of $520.77 million, ahead of Zacks estimates of $513 million
  •  Oppenheimer raised its rating on ConocoPhillips (COP) to "outperform" with a price target of $70
  •  Kaufman reiterated its "buy" on Google (GOOG), anticipating a "modest" first quarter showing, with a price target of $740
  •  Piper Jaffray (PJC) maintained its "overweight" rating on Yahoo! (YHOO) with a $20 price target
  •  Leerink Swan upgraded shares of United Health (UNH) from "market perform" to "outperform," with a price target range of $37-$44
  •  Infosys Technologies (INFY) reported fiscal fourth quarter earnings of 61 cents, versus Zacks projections of 57 cents, on revenues of $1.3 billion, which came in ahead of estimates of $1.26 billion