It’s Alphabet (GOOGL) versus Microsoft (MSFT) in artificial intelligence — and after decades of owning search, Google finds itself looking over its shoulder. While the Club owns both stocks, we’re most concerned about Alphabet at the moment as it plays catch up in the AI arms race and faces a government antitrust lawsuit over its online advertising dominance. Last week was brutal for Alphabet shares. Microsoft last Tuesday unveiled surprise plans for an AI-enhanced version of its Bing search engine, which barely has any market share. In response, a day later, Google held its own AI event — showcasing Bard, its answer to ChatGPT. It was a flop. The back-to-back decline last Wednesday and Thursday in Alphabet stock was the biggest two-session losing streak since March 2020. Wall Street’s rebuke of GOOGL last week reflects our worries that if a new Bing — pow e red by Microsoft-backed OpenAI , maker of viral sensation ChatGPT — were to gain a foothold in search, Alphabet’s online ad dominance could be threatened. The Justice Department’s suit could also shake up the ad market. Alphabet’s business model depends on revenue from online ads. The company delivered full-year 2022 total revenue of $282.84 […]