Sort of. GOOG(L) the ticker now represents Alphabet - when you buy GOOG, you are also getting shares of Waymo, Verily, Calico, and the rest of the "Other Bets". In that sense, Google did change its name to Alphabet. OTOH, Google as a separate company still exists within the Alphabet umbrella, and Google employees remain employees of Google (though they get Alphabet stock compensation). Also Waymo employees do not get GOOG stock (they get Waymo stock, which is currently privately held and majority-owned by Alphabet), so there is a real distinction between them.