This article was originally published in The Option Strategist Newsletter Volume 2, No. 10 on May 27, 1993.
We often refer to the put-call ratio in our Sentiment Indicators section. However, judging by questions we have received from subscribers, it might be beneficial to expand on the concept. We will cover the subject both generally and then specifically, in regard to the way we prefer to interpret the ratio. The put-call ratio is simply the number of puts traded, divided by the number of calls traded. It can be computed daily, weekly, or over any other time period. It can be computed for stock options, index options, or futures options.
