Hedge funds stage major comeback after January's meme stock mania: CNBC After Hours

CNBC.com's MacKenzie Sigalos brings you the day's top business news headlines. On today's show, CNBC.com's Yun Li explains how hedge funds learned from early 2021's meme stock craze, and made big money in July. Plus, 12 U.S. service members die in a suicide bombing near Kabul, Afghanistan's international airport.