Citadel Securities has submitted a comprehensive 29-page proposal to the U.S. Securities and Exchange Commission (SEC) urging enhanced regulatory measures to address emerging risks in the capital markets. The firm highlighted concerns over opaque trading activities occurring in so-called "private rooms" and called for tighter oversight of these venues. Additionally, Citadel Securities warned about the potential risks associated with the planned introduction of 24-hour stock trading by U.S. exchanges, advocating for clear rules and risk assessments before implementation. The firm also urged regulators to scrutinize how banks leverage their debt underwriting divisions to secure trading business in the $11 trillion U.S. corporate bond market, coinciding with Citadel's own expansion into credit trading. This policy push comes amid new Trump-era leadership at the SEC, which Citadel views as an opportunity for structural reform aimed at improving market efficiency, resiliency, competition, and transparency.