Quote from def:
The error in the above referenced consolidated financial statements had no effect on reported net income or cash flows.
Def, you might want to add that the error may have an effect on IBKR's previously reported permanent equity and earnings per share.
I think that the sooner you get this error explained to the public in a complete and plain manner, the less likely it will be that the restated financials will result in negative fallout.
Good luck and I mean that.