Merchant Banking Modernization Act

This bill amends the Bank Holding Company Act to require a minimum 15-year holding period for merchant banking investments. Banks would need to hold these investments - where they make equity stakes in non-financial companies - for at least 15 years before selling, applying to both new investments and existing ones held on the bill's enactment date. The change directly affects banks engaged in merchant banking activities by altering the regulatory timeframe for holding such investments. It modifies specific provisions of the Bank Holding Company Act without creating new programs or altering eligibility.