Market Circuit Breakers


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The Effect of Single-Stock Circuit Breakers on the Quality of Fragmented Markets


Book Description

Since the May 6th, 2010 flash crash in the U.S., appropriate measures ensuring safe, fair and reliable markets become more relevant from the perspective of investors and regulators. Circuit breakers in various forms are already implemented for individual markets to ensure price continuity and prevent potential market failure and crash scenarios. However, coordinated inter-market safeguards have hardly been adopted, but are considered essential in a fragmented environment to prevent situations, where main markets halt trading but stock prices continue to decline as traders migrate to satellite markets. The objective of this paper is to empirically study the impact of circuit breakers in a single-market and inter-market setup. We find a decline in market volatility after the trading halt in the home and satellite market which come at the cost of higher spreads. Moreover, the satellite market's quality and price discovery during CBs is weakened and only recovers as the other market restarts trading.




A First-Class Catastrophe


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"The definitive account of the crash of 1987, a cautionary tale of how the U.S. financial system nearly collapsed ... Monday, October 19, 1987, was by far the worst day in Wall Street history. The market fell 22.6 percent--almost twice as bad as the worst day of 1929--equal to a loss of nearly 5,000 points today. But Black Monday was more than just a one-day market crash; it was seven years in the making and threatened the entire U.S. financial system. Drawing on superlative archival research and dozens of original interviews, the award-winning financial journalist Diana B. Henriques weaves a tale of ignored warnings, market delusions, and destructive decisions, a drama that stretches from New York and Washington to Chicago and California. Among the central characters are pension fund managers, bank presidents, government regulators, exchange executives, and a pair of university professors whose bright idea for reducing risk backfires with devastating consequences. As the story hurtles toward a terrible reckoning, the players struggle to avoid a national panic, and unexpected heroes step in to avert total disaster. For thirty years, investors, bankers, and regulators have failed to heed the lessons of Black Monday. But with uncanny precision, all the key fault lines of the devastating crisis of 2008--breakneck automation, poorly understood financial products fueled by vast amounts of borrowed money, fragmented regulation, gigantic herdlike investors--were first exposed as hazards in 1987. A First-Class Catastrophe offers a new way of looking not only at the past but at our financial future as well."--Dust jacket.




Market Circuit Breakers


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An Experimental Study of Circuit Breakers


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This paper analyzes the effect of circuit breakers on price ehavior, trading volume, and profit-making ability in a market setting. We conduct nine experimental asset markets to compare behavior across three regulatory regimes: market closure, temporary halt, and no interruption. The presence of a circuit breaker rule does not affect the magnitude of the absolute deviation in price from fundamental value or trading profit. The primary driver of behavior is information asymmetry in the market. By comparison, trading activity is significantly affected by the presence of a circuit breaker. Mandated market closures cause market participants to advance trades.




Circuit Breakers and Market Volatility


Book Description

This paper examines ex ante effects of quot;circuit breakersquot; (mandated trading halts). We show that circuit breakers, by causing agents to suhoptimally advance trades in time, may have the perverse effect of increasing price variability and exacerbating price movements. We next consider a situation in which a circuit breaker causes trading to be halted in both a quot;dominantquot; (more liquid) and a quot;satellitequot; market. As agents switch from the dominant market to the satellite market, price variability and market liquidity decline on the dominant market and increase on the satellite market.




Transactional Risk, Market Crashes, and the Role of Circuit Breakers


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This work has been selected by scholars as being culturally important and is part of the knowledge base of civilization as we know it. This work is in the public domain in the United States of America, and possibly other nations. Within the United States, you may freely copy and distribute this work, as no entity (individual or corporate) has a copyright on the body of the work. Scholars believe, and we concur, that this work is important enough to be preserved, reproduced, and made generally available to the public. To ensure a quality reading experience, this work has been proofread and republished using a format that seamlessly blends the original graphical elements with text in an easy-to-read typeface. We appreciate your support of the preservation process, and thank you for being an important part of keeping this knowledge alive and relevant.




Coordination of Circuit Breakers? Volume Migration and Volatility Spillover in Fragmented Markets


Book Description

We study circuit breakers in a fragmented, multi-market environment and investigate whether a coordination of circuit breakers is necessary to ensure their effectiveness. In doing so, we analyze 2,337 volatility interruptions on Deutsche Boerse and research whether a volume migration and an accompanying volatility spillover to alternative venues that continue trading can be observed. Different to prevailing theoretical rationale, trading volume on alternative venues significantly decreases during circuit breakers on the main market and we do not find any evidence for volatility spillover. Moreover, we show that the market share of the main market increases sharply during a circuit breaker. Surprisingly, this is amplified with increasing levels of fragmentation. We identify high-frequency trading as a major reason for the vanishing trading activity on the alternative venues and give empirical evidence that a coordination of circuit breakers is not essential for their effectiveness as long as market participants shift to the dominant venue during market stress.