(Bloomberg) --Insurance platform Ethos Technologies Inc. and some of its backers are seeking to raise about $211 million in an initial public offering, the latest insurance-related firm set to debut. Processing ContentThe San Francisco-based company and some of its shareholders plan to market 10.5 million shares for$18 to $20 each, according to its filing Monday with the US Securities and Exchange Commission.  At the top of that range, Ethos would have a market value of$1.3 billion based on the outstandi ...