Mario Gabelli is Wall Street’s highest paid CEO By: MarketWatch September 08, 2014 at 18:14 PM EDT GAMCO Investors Inc.’s Mario Gabelli is the highest paid CEO in the asset management and brokerage space, according to SNL Research. Read More >> Related Stocks: Affiliated Managers Group Ares Management LP Artisan Partners Asset Mgmt BlackRock Blackstone Inc Goldman Sachs Group Intercontinental Exchange KKR & Company LP Morgan Stanley Oaktree Capital Group Llc Och-Ziff Capital Management