We further explore a new volatility explanation for the permanent price effect of index additions, using a sample of changes in the Nikkei 225. Additions to the index elicit significant price hikes, which tend to be permanent despite temporary price reversals. Meanwhile, investor awareness and...

We investigate the volatility impacts of the full commission deregulation in Japan in October 1999, and find that the deregulation overall tends to significantly increase price volatility in the Japanese equity market, using alternative model specifications and control variables. This finding...

The BP Deepwater Horizon drilling rig exploded on April 20, 2010, leading to an unprecedented environmental and financial disaster. This paper details responses in the financial markets for BP securities, including stock, bonds, options, and credit default swaps. Following the disaster BP shares...