Alphabet Inc.’s Class A shares rallied on Friday, climbing to an intraday peak of $207.05 and positioning the stock for a record-high close, according to real-time market quotes cited by traders. The shares were recently changing hands at about $206.44, extending a run that investors attribute to sustained demand for megacap technology names and confidence in Alphabet’s artificial-intelligence roadmap. Some market participants also pointed to anticipation of an unspecified court ruling that they believe could benefit the company, though details of the decision have not been made public.