These four companies report December quarter results after markets close Wednesday afternoon.
Earnings season continues Wednesday and Thursday with two more airlines reporting results along with a tech firm, a restaurant chain, and an energy pipeline giant.
Thursday's top analyst upgrades and downgrades included Abbott Laboratories, American Express, eBay, Exact Sciences, Lam Research, ServiceNow, Tesla and Twitter.
Taiwan Semiconductor reported solid beats to both expected earnings and revenues, but the share price is stalled. The company's 12-month share price increase is better than that of its largest...