It makes more intuitive sense that the capital market system is mostly stable and a small change would not have had such a systemic impact.

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Now, obviously over shorter periods of time systemic events impact prices and investors may temporarily feel that one region is much riskier than another.

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And are any of these systemic in their impact?

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If these products that got to be so large can have that much impact on systemic risk in the U.S. financial system, I think the dealers have to accept that central clearing and some transparency is a price of wanting to be in those businesses.

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"We need first and foremost to avoid systemic risks, to limit the negative impact of these financial tensions in our real economies, " he said.

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As interest in this concept exploded, my co-author Jed Emerson and I thought it timely to write a book that could both serve as an introduction to this concept and also identify the systemic challenges we must overcome to enable impact investing to reach its potential.

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The same issues that create systemic failure and success with money on a global scale also impact us personally.

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In any case, systemic changes to institutions' balance-sheets will have a substantial impact on the types of businesses banks become.

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