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...

The literature in the area of index changes finds evidence that index changes are information free events. However, Denis, McConnell, Ovtchinnikov and Yu (2003) find evidence contrary to this theory. This study extends the work of Denis, McConnell, Ovtchinnikov and Yu (2003) in an attempt to...