General Motors,Coca-Cola, Spotify rise premarket; UPS, Comcast fall

Investing.com -- U.S. stock futures steadied Tuesday, ahead of the release of key corporate earnings, particularly from the important tech sector.

Here are some of the biggest premarket U.S. stock movers today:

• General Motors (NYSE:GM) stock soared 4.9% after the auto giant beat second-quarter profit and revenue expectations, and raised its annual profit forecast for a second time this year, buoyed by strong pricing and demand for gas-powered trucks.

• Coca-Cola (NYSE:KO) stock rose 1.4% after the soft drinks giant raised its annual organic sales and profit forecast, signaling strong demand for its beverages in its U.S. and international markets.

• United Parcel Service (NYSE:UPS) stock fell 8.1% after the package delivery service reported disappointing second-quarter earnings, amid revenue weakness in the domestic business.

• Spotify (NYSE:SPOT) stock soared 13% after the music streaming service reported better-than-expected earnings for the second quarter, with its gross margin coming in at 29.2%, easily topping forecasts.

• Kimberly-Clark (NYSE:KMB) stock fell 0.8% after the household products manufacturer raised its forecast for full-year profit after beating estimates for second-quarter profit.

• Comcast (NASDAQ:CMCSA) stock fell 0.7% after the U.S. telecom and media firm missed estimates for quarterly revenue as it had fewer movie releases during the period, while attendance at its theme parks stayed low

• GE Aerospace (NYSE:GE) stock rose 3.5% after the industrial giant raised its annual profit forecast on strong demand for its aftermarket services, including jet-engine parts.

• Cadence Design (NASDAQ:CDNS) stock fell 1.1% after the electronic design stock offered up soft earnings guidance for the current quarter.

• Crown Holdings (NYSE:CCK) stock rose 7.2% after the packaging product maker reported full-year guidance that exceeded expectations.

• NXP Semiconductors (NASDAQ:NXPI) stock slid 8% after the Dutch company reported second-quarter adjusted earnings missing expectations, as it battles sluggish demand from automotive customers.

• Polaris (NYSE:PII) stock fell 12% after the automotive manufacturer posted weaker than expected second-quarter earnings and slashed its full-year guidance.