US stock futures wavered on Wednesday after a record-setting session for the Dow as investors fielded the latest wave of earnings in a busy day highlighted by Tesla (TSLA) and IBM (IBM). Futures on the Dow Jones Industrial Average (YM=F) and the S&P 500 (ES=F) were little changed. Contracts on the tech-heavy Nasdaq 100 (NQ=F) was down around 0.2% as stocks swung between small gains and losses. Wall Street is looking to earnings to lift spirits after upbeat blue-chip results on Tuesday helped propel the ...