Air Products (APD +6.1%) trades sharply higher after adopting a stockholder rights plan; the...

Air Products (APD +6.1%) trades sharply higher after adopting a stockholder rights plan; the board says the plan was not adopted in response to any specific takeover proposal but it has observed "unusual and substantial activity" in APD shares. David Faber on CNBC notes speculation that APD could be the target of Bill Ackman's Pershing Square.