BTU IS PROUD TO BE A BERKLEY COMPANY 07.30.2021 W.R. Berkley Corporation moves up to number 372 on the 2021 Fortune 500 list Fortune Magazine 2021 Read more at: https://fortune.com/fortune500/2021/search/?f500_industry=Insurance%3A%20Property%20and%20Casualty%20%28Stock%29&hqcity=Greenwich&hqstate=CT§or=Financials