Though it was a flat week for the S&P 500, tech stocks saw a bit more volatility as the heavily technology-weighted Nasdaq composite index pulled back about 0.4%. Apple (NASDAQ: AAPL) was among the big movers in tech, with its stock falling about 5%. Telecommunications company Sprint (NYSE: S) also saw its stock move big — but in the other direction — when reports surfaced that it may merge with T-Mobile (NASDAQ: TMUS).