https://www.sec.gov/news/press-release/2023-192
"The Securities and Exchange Commission today announced settled charges against broker-dealer Citadel Securities LLC for violating a provision of Regulation SHO, the regulatory framework designed to address abusive short selling practices, which requires broker-dealers to mark sale orders as long, short, or short exempt."
"To settle the SEC’s charges, Miami-based Citadel Securities agreed to pay a $7 million penalty."
I wonder how much money they earned through these mistakes?