IIRC, on MORE than one FR thread, it is owned by Soros (his bro runs it??).
Progressive is publicly traded on the NYSE symbol: PGR
http://finance.yahoo.com/echarts?s=PGR+Interactive#chart2:symbol=pgr;range=my;indicator=volume;charttype=line;crosshair=on;ohlcvalues=0;logscale=on;source=undefined