Tax, auditing, and advisory firm
Founded: 1897 as Marwick and Mitchell and Co. in New York
"We got our jump start post-Great Depression, when the SEC started to require public companies to have an audit done every year. But we started looked beyond that, and created our own mergers and acquisitions service, and our own service to help companies with regulatory compliance matters. We've been able to adapt."
– Patrick Canning, Boston managing partner