A young boy works at a trading post on the floor of the New York Stock ExchangeBy way of Luke Swiderski NEW YORK (Reuters) – The Dow and the S&P 500 dipped in thin vacation buying and selling on Friday, but technology shares helped raise the Nasdaq to a 13-year excessive. The Nasdaq received a boost from the technology sector, with Apple "It's virtually as if people are rotating into the larger blue-chip names, especially the technology giant caps. We wouldn't be bowled over at all to look the small and mid-cap names lag a little bit bit," stated Ryan Detrick, senior technical strategist with Schaeffer's Investment Research, in Cincinnati.