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-post and ex-ante types), of cancellation fees and of transaction taxes on asset price volatility and on the occurrence and …, the introduction of an ex-ante circuit breaker markedly reduces price volatility and removes flash crashes. In contrast … price fluctuations. In addition, high-frequency traders employ low-latency directional strategies that exploit market …
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plays an important role in explaining the idiosyncratic volatility (IVOL) puzzle, the correlation among IVOL, market beta …
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funds and swap dealers cause price changes or volatility. We find little evidence that speculators destabilize financial … markets. To the contrary, speculative trading activity largely reacts to market conditions and reduces volatility levels …
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