Heavily shorted meme stocks extended their social media-driven rally, with Aethlon Medical AEMD.O soaring over 300%. By Stephen Culp NEW YORK, June 9 (Reuters) - Wall Street stocks ended lower on Wednesday, reversing earlier gains as institutional investors awaited inflation data for clues as to when the U.S. Federal Reserve might tighten its dovish monetary policy. Washington lawmakers passed a sweeping bill designed to boost the United States' ability to compete against Chinese technology, providing funds for research and semiconductor production amid an ongoing chip supply drought.