The stock also got a rare form of validation for a tech company, as Warren Buffett’s Berkshire Hathaway Inc. revealed late last week that it had built a stake in Alphabet during the third quarter. Photo by Richard Drew/AP Photo/Postmedia files

Alphabet Inc. shares soared the most in two months on Wednesday as a wave of glowing reviews for the newly released version of its Gemini artificial intelligence model spurred investor confidence about the company’s position in the ever-changing tech landscape .

The stock rose as much as 6.9 per cent, its biggest gain since early September, to hit a fresh record high. More than 376,000 call options on Alphabet changed hands as of 11:00 a.m. in New York, above the 20-day average of about 290,000 for a full day of trading. The broader S&P 50

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