Our study explores whether the disposition effect occurs in U.S. equity option markets. The disposition effect implies past winning securities will be undervalued and past losing securities will be overvalued. By adapting Grinblatt and Han's [2005] unrealized capital gains proxy to the option...

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...