Poor earnings for companies such as i2 Technologies sent the tech market lower.

Nuance Communications rises after narrowing first-quarter losses.

Here are three ways to measure expanding and contracting markets.

It will pay $133 million for the privately held health care-payer technology company.

Tesla sold a record 78,000 China-made cars last month, an industry group reported Wednesdsay.

Tesla's second-quarter deliveries climbed year over year but fell from the first quarter. Here's how to trade the stock now.

These companies made the most mentions of "supply chain" in their first-quarter earnings calls.