 Shares of Skechers USA Inc. SKX, 4.88 surged 5.1 in morning trading Wednesday, after Tremblant Capital Group disclosed that it increased its equity stake in the footwear seller to 5.1, and said it has engaged in discussions with the company in an attempt to boost value. The new stake of 6.87 million shares comes just two weeks after the company said in a 13F filing that it owned 2.73 million Skechers shares and calls to buy 1.07 million shares as of Sept. 