Download or read book Are Tightened Trading Rules Always Bad? Evidence from the Chinese Index Futures Market written by Hai Lin and published by . This book was released on 2018 with total page 38 pages. Available in PDF, EPUB and Kindle. Book excerpt: This paper investigates the impact of tightened trading rules on the market efficiency and the price discovery function of Chinese stock index futures in 2015. In contrast with severe criticism of these changes, we do not find empirical evidence that market efficiency and price discovery deteriorated after these rule changes. Using variance ratio and spectral shape test, we find that the Chinese index futures market became even more efficient after the tightened rules came into effect. Furthermore, by employing Schwarz and Szakmary (1994) and Hasbrouck (1995) price discovery measures, we find that the price discovery function, to some extent, became better. This finding is consistent with Stein (2009), who documents that regulations on leverage can be helpful in a bad market state, and Zhu (2014), who finds that price discovery can be improved with reduced liquidity. It also suggests that the new rules may effectively regulate the manipulation behavior of the Chinese stock index futures market during a bad market state, and then positively affect its market efficiency and price discovery function.