Cowen (COWN) Buyout of Portico Capital to Boost M&A Revenues Posted byZacks Equity Research November 29, 2021 Leave a comment on Cowen (COWN) Buyout of Portico Capital to Boost M&A Revenues To beef up its investment-banking business, Cowen (COWN) inks a deal to buy the software-focused M&A firm Portico Capital, expecting a rise in its M&A revenues.