Perhaps, all you would have to do is call SGI and ask them. Use some interpersonal skills. Far better than trying to lay in doubt, e.g. "no way anybody outside of government would be so stupid." With your claim of large position, really surprised that your DD didn't uncover whether this is true or not. What exactly did you DD provide that you once felt so confident to invest, or are you and friends, as losing suggests, posers?
It's called, calling you out.