U.S. markets and stock exchange traded funds meandered on Thursday, swinging between small gains and losses. On Thursday, the Invesco QQQ Trust (NASDAQ: QQQ) increased 0.1%, SPDR Dow Jones Industrial Average ETF (NYSEArca: DIA) was down 0.1% and iShares Core S&P 500 ETF (NYSEArca: IVV) fell...