shares of companies owned by indian billionaire gautam adani fell after index provider msci inc said it will conduct a freefloat review of adani group securities following feedback from market participants about the eligibility of some of the conglomerates securities msci has determined that the characteristics of certain investors have sufficient uncertainty that they should no longer be designated as free float pursuant to our methodology msci said in a statement thursday adani enterprises ltd didnt immediately respond to a request for comment shares of adani enterprises fell as much as 20 while those of adani ports  special economic zone ltd lost up to 89 adani enterprises was recently 74 lower while adani ports and adani power were off 29 and 50 respectively msci defines the free float of a security as the proportion of shares outstanding that is considered available for purchase in public equity markets by international investors adani shares have taken a beating since new yorkbased short seller hindenburg research published a report on jan 24 alleging that mr adani and his group had manipulated stock prices among other accusations the 60yearold tycoon once the worlds secondrichest man according to the bloomberg billionaires index has seen his fortunes plummet his wealth has more than halved to 619 billion as of wednesday in a tweet following the msci statement hindenburg founder nate anderson said we view this as validation of our findings on offshore stock parking by adani