 GREENWICH, Conn.--BUSINESS WIRE--GAMCO Investors, Inc. GAMCO NYSE: GBL announced today that it expects to report fourth quarter 2020 diluted earnings in the range of 0.69 to 0.73 per share versus 0.91 per share for the fourth quarter of 2019. Assets under management were 32.6 billion at December 31, 2020 as compared to 29.7 billion at September 30, 2020. GAMCO will be issuing further details on its financial results in early February. About GAMCO Investors, Inc. GAMCO is known for 