Since a significant chunk of the big banks’ profits – especially that of Goldman Sachs Group Inc. (NYSE: GS) and Morgan Stanley (NYSE: MS) – come from various forms of proprietary trading, the Volcker Rule stands to cost the industry billions in revenue.
To prevent cheating, complex compliance rules will require that banks prove that all their trading activities are for clients’ benefit, and not proprietary. Compliance alone is expected to tack on another $2 billion in costs.