American Securities LLC (originally named American Securities Capital Partners (ASCP)), is an American private equity firm based in New York with an office in Shanghai that invests in market-leading North American companies with annual revenues generally ranging from $200 million to $2 billion and/or $50 million to $250 million of EBITDA. American Securities and its affiliates have approximately $23 billion under management. American Securities traces its roots to a family office founded in 1947 by William Rosenwald, the son of Julius Rosenwald (August 12, 1862 – January 6, 1932).