NEW YORK ( TheStreet) -- CHANGE IN RATINGS Amphenol ( APH) downgraded at BofA/Merrill to Neutral, Bank of America/Merrill Lynch said. Valuation call, based on a $65 price target. Berkshire Hathaway (A shares) ( BRK.A) downgraded to hold at TheStreet Ratings. Berkshire Hathaway (B shares) ( BRK.B) downgraded to hold at TheStreet Ratings. Freescale Semi ( FSL) rated new Neutral at UBS. $11.75 price target. Limited near term catalysts as turnaround in progress. Globus Medical ( GMED) rated new Buy at Goldman. $18 price target. Company can deliver 13% annual sales growth and is reasonably valued. Globus Medical rated new Outperform at Oppenheimer. $18 price target. Company is growing faster than its peers and expanding internationally. GlaxoSmithKline ( GSK) downgraded at UBS to Neutral from Buy, UBS said. $48.18 price target. Valuation, earnings visibility limit potential for further upside. KLA-Tencor ( KLAC) downgraded at Deutsche from Hold to Sell, Deutsche Bank said. $44 price target. Company is leveraged to lower foundry spending. Pioneer Southwest ( PSE) downgraded at UBS to Sell from Neutral, UBS said. $24 price target. Limited hedge book relative to peers.