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Several Firms Begin Coverage on SandRidge Permian Trust (PER) Sep 20, 2011 11:33AM
Baird Starts SandRidge Permian Trust (PER) at Outperform Sep 20, 2011 07:33AM
Baird Initiates Coverage on Perot Systems (PER) with an Outperform Sep 3, 2009 07:34AM