Stock Rally Stalls as Earnings Kick Into High Gear: Markets Wrap 7 minutes (Bloomberg) — Stocks struggled to gain much traction as traders waded through a deluge of corporate results for clues on whether the market will be able to extend this year’s record-breaking advance. Following its biggest rally since early June, the S&P 500 edged mildly higher. United Parcel Service Inc. — an economic barometer — headed toward its biggest plunge on record on a profit miss. Tesla Inc. and Alphabet Inc. will kick off the “Magnificent Seven” earnings season after the closing bell. Companies will have to impress...