ARTICLE SYNOPSIS ...A Twist On The Arms Index by Harley D. Wilbur The Arms index, which was originally known as TRIN (for trading index), utilizes up and down volume and advancing and declining issues for calculation. The indicator, which aims to identify possible turning points in the stock market, has been studied keenly since its introduction. Here, Harley Wilbur presents a new version of this indicator, bruised and battered but still standing in the field of trading battle. I have long been fascinated with the Arms index, also known as the TRIN indicator. I was introduced to it in the early 1970s when it h...