Celestica shares fell in lockstep with other tech companies Monday as China's DeepSeek low-cost AI model rattled the sector. Shares trading in Toronto were down nearly 17% to 144.23 Canadian dollars.

Monday's tech rout has brought no shortage of big numbers on Wall Street, and here's another to keep in mind: $441.9 billion. That's the amount of market capitalization that Nvidia has shed, based on ...

China's DeepSeek startup roiled artificial intelligence-driven stocks on Monday as Wall Street mulled huge investments by ...