TITLE:
Design of Financial Market Regulations against Large Price Fluctuations Using by Artificial Market Simulations
AUTHORS:
Takanobu Mizuta, Kiyoshi Izumi, Isao Yagi, Shinobu Yoshimura
KEYWORDS:
Artificial Market; Multi Agent Simulation; Financial Crash; Price Variation Limit; Short Selling Regulation; Up-Tick Rule
JOURNAL NAME:
Journal of Mathematical Finance,
Vol.3 No.2A,
April
29,
2013
ABSTRACT: We built an artificial market model and compared effects of price variation limits, short selling regulations and up-tick rules. In the case without the regulations, the price fell to below a fundamental value when an economic crush occurred. On the other hand, in the case with the regulations, this overshooting did not occur. However, the short selling regulation and the up-tick rule caused the trading prices to be higher than the fundamental value. We also surveyed an adequate limitation price range and an adequate limitation time span for the price variation limit and found a parameters’ condition of the price variation limit to prevent the over-shorts. We also showed the limitation price range should be bigger than a volatility calculated by the limitation time span.