of active US mutual funds beat their benchmark index over a toy en According to the lecture, the historical performance of professional US money managers indicates that This seems to indicate that even with all the behavioral biases present the US stock market is 126 almost fully efficient (Fama Sem-Strone Form EMH) 5-10, fairly ethicient perhaps Fama Weak Form (H or something similar to that OW absolutely fully officient (Fama Strong form EMIO 80%, not efficient whatsoever and easily exploitable by smart investors of active US mutual funds beat their benchmark indexova 10 y period According to the lecture, the historical performance of professional US money managers indicates that This seems to mdicate that even with all the behavioral ses present the US stock market is 1 mot fully efficient Farrua SemiStrong Form EMHO 5-10% rein perhaps Fama Wak Form FMH or something similar to that Obsolutely fully efficient Fama Strongform EMH) not efficient whatsoever and easily exploitable by martinvestors