Opendoor's stock surged 11.3% due to retail investor interest and hedge fund backing, becoming a "meme stock."

Opendoor Technologies' stock saw a significant uptick, gaining 11.3%, driven by increased interest from retail investors and social media activity. Hedge fund manager Eric Jackson's endorsement and the company's high short interest contributed to its rise as a "meme stock." Opendoor, an online real estate platform, benefits from retail traders betting against short-sellers.