(Bloomberg) -- The world's biggest investment managers, from BlackRock to Vanguard, have a simple message for Mark Carney, head of the Financial Stability Board: Stop trying to regulate us like banks.

The firms are seeking to avoid the fate of lenders and insurers that were deemed systemically important in the wake of the 2008 financial crisis. The too-big-to-fail designation by the FSB led to higher capital and leverage requirements and tougher liquidity rules for banks led by HSBC and J.P. Morgan.

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