 According to the Buffett-Munger Model Portfolio, four stocks with strong gains during the first quarter that align with Berkshire Hathaway Inc. NYSE:BRK.ANYSE:BRK.B co-managers Warren Buffett Trades, Portfolio and Charlie Munger Trades, Portfolios investing strategy are Sleep Number Corp. NASDAQ:SNBR, Lithia Motors Inc. NYSE:LAD, Usana Health Sciences Inc. NYSE:USNA and Griffon Corp. NYSE:GFF. 