Value and momentum portfolios exhibit strong opposite signed exposure to an aggregate risk factor based on low frequency fluctuations in the capital share. This strong opposite signed exposure helps explain why both strategies earn high average returns yet are negatively correlated. But the...

We report evidence that boundary solutions can cause a bias in the estimate of the probability of informed trading (PIN). We develop an algorithm to overcome this bias and use it to estimate PIN for nearly 80,000 stock-quarters between 1993 and 2004. We obtain two sets of PIN estimates by using...

We describe the fundamental issues that long-horizon event studies face in choosing the proper research methodology, and summarize findings from existing simulation studies about the performance of commonly used methods. We document in detail how to implement a simulation study and report...

We examine stock trading activities in days before Chinese listed firms made public announcement to start share-structure reform. There is significant evidence that, relative to a benchmark period, institutional investors bought more event firms' shares in the last two trading days prior to...

This document is the Online Appendix to "Quality of PIN Estimates and the PIN-Return Relationship" by Yuxing Yan and Shaojun Zhang in Journal of Banking and Finance 43 (2014), pp 137-149. It includes two tables and four figures. The first table compares the two sets of quarterly PIN estimates...