The Federal Reserve (Fed) has begun a Quantitative Impact Survey (QIS) to study the impact that its regulatory capital framework would have on non-bank systemically important financial institutions (SIFI) such as Prudential Financial Inc (NYSE:PRU), Metlife Inc (NYSE:MET) and American International Group Inc (NYSE:AIG), a move that is being seen as a positive sign for how those firms will be treated. “We believe this undertaking is critical to helping convince Fed officials that rules currently in place and designed for banking institutions are not suitable in application for insurers,” writes Sterne Agee analyst John Nadel. “It is our hope that…