Also see: Apollo, Juniper: New Targets, EstimatesEditor's Note: Green and red arrows refer to intraday stock price movement. NEW YORK ( TheStreet) -- CHANGE IN RATINGS AMC Networks ( AMC) was initiated with an Underweight rating at Barclays. $32 price target. Expensive valuation relative to peers, Barclays said. General Mills ( GIS) was downgraded at Argus Research from Buy to Hold. Company lowered its guidance, Argus said. IAC InterActive ( IACI) was downgraded from Buy to Neutral at Bank of America/Merrill Lynch. Valuation call, as the stock is up 33% year to date, BofA/Merrill said. $41 price target. Marathon Petroleum ( MPC) was initiated with an Outperform rating at Credit Suisse. $55 price target. Company is leveraged to higher refining margins, Credit Suisse said. Servicesource ( SREV) was downgraded at Capstone Investments from Hold to Sell. $14 price target. Float will likely increase significantly by late September. Capstone said. Triquint ( TQNT) was initiated with a Neutral rating at UBS. $11 price target. Company is positioned to benefit from smartphone market growth, UBS said. End of report.