Regulators want big, complex banks to hold larger buffers of capital to protect the financial system. Big banks argue this is unnecessary because risk is diversified across their larger balance sheets. Who is right? Natural sciences – especially epidemiology, ecology and genetics – provide clues.
市场监管者希望,复杂的大型银行能持有更多资本金缓冲,以保护金融系统。大型银行认为这毫无必要,因为在其规模较大的资产负债表中,风险是多种多样的。谁说的对?自然科学——特别是流行病学、生态学与遗传学——为我们提供了一些线索。
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