AIG and GE Capital are to be among the first US groups designated systemically important non-bank financial institutions, after a 30-day appeal period passed.

But life insurer Prudential Financial will contest its proposed inclusion and has sought a hearing with the Financial Stability Oversight Council.

The designation will bring greater oversight from regulators because of the companies’ importance to the financial system. The groups can expect higher capital standards.

The oversight council – comprising federal and state regulators and an independent insurance expert – has not named the proposed companies, but the three groups “outed” themselves last month after being informed by Treasury.

Media reports say AIG and GE Capital have accepted the proposal.

Prudential says stricter standards may apply to risk-based capital and leverage, liquidity, stress testing, overall risk management, resolutions plans, early remediation and credit concentration.

There may also be extra standards on capital, public disclosure, short-term debt limits and other related subjects.

A decision on Prudential’s appeal will follow within 60 days of a hearing, the company says.