TORONTO — Strength in technology stocks led Canada's main stock index higher on Tuesday, while U.S. stock markets also rose to regain some of the ground lost Monday after a Chinese AI startup called DeepSeek unveiled a large language model that apparently rivals those created in the U.S. Tuesday saw “almost a perfect reversal from yesterday,” said Jules Boudreau, senior economist at Mackenzie Investments. On Monday, a number of sectors had a good day but were overshadowed by a slide in tech stocks, said Boudreau. “Today it’s the opposite,” he said, with markets being driven higher by tech names like…