Purpose – The purpose of this study is to extend the work of DeFusco, Ivanov and Karels by examining pricing deviation of DIA, SPY and QQQQ on intradaily basis. Design/methodology/approach – The DIA is designed to be one hundredth of the DJIA, the SPY is designed to be one tenth of the S&P...

We examine the probability of deletion of a firm from the S&P 500 index due to a decision of the index committee because the firm did not satisfy the index committee criteria. We study the probability of deletion with survival analysis and neural networks methods. We document that deletion might...

In this study we attempt to answer the question – does the start of pre-announcing of S&P 500 index changes in October 1989 have an effect on the trading pattern of added or deleted firms? We document that prior to October 1989 the excess returns of added or deleted firms follow a white...