RE:MUX invested in GBRif you google mux/gbr , you get a couple articles that say they sold some at a profit in 2019 , i cant find anything else after that and in the anual reports they list investments but they are not broken down by companies held . also mux held 785000 initially (then sold some)shares rob held the rest , so the amount to mux at $ 29/gbr , would be under 20 million