WeatherBill can be thought of a) as expressive insurance b) as a combinatorial prediction market with an automated market maker. Posted on August 19, 2008 by admin David PennockHis analysis misses the fact that WeatherBill re-sells the risks to hedge funds that want to make a profit (as opposed to an automated market maker that may lose money) —-but I am not sure that’-s important in the analysis. Related PostsWeatherBill can be thought of a) as expressive insurance b) as a combinatorial prediction market with an automated market maker.Thoughts on Weather BillWeatherBill contracts are financial instruments, regulated by the CFTC.