Flash Crashes: The Role of Information Processing Based Subordination and the Cauchy Distribution in Market Instability
Journal of Insurance and Financial Management, Vol. 2, No. 7 (2016)
15 Pages Posted: 18 Jul 2016 Last revised: 8 Dec 2018
Date Written: July 15, 2016
While a wide variety of hypotheses have been offered to explain the anomalous market phenomena known as a “Flash Crash”, there is as of yet no consensus among financial experts as to the sources of these sudden market collapses. In contrast to the behavior expected from standard financial theory, both the equity and bond markets have been thrown into freefall in the absence of any significant news event. The author posits that a combination of probability and information theory, and diffusion dynamics offers a relatively simple explanation of the causes of some of these dramatic events. This new avenue of research also suggests new policies or measures to lower the probability of occurrence and to mitigate the effects of these extreme events.
Keywords: Subordination, Cauchy Distribution, Flash Crash, HFT, Brownian motion, Information Theory
JEL Classification: G1, G010, G12, G14, G170, D800
Suggested Citation: Suggested Citation