That concludes our coverage of volume and open interest, at least for now. Volume analysis is used in all financial markets—futures,
options, and stocks. Open interest applies only to futures and options. But, since futures and options are traded on so many stock market vehicles, some understanding of how open interest works can be useful in all three financial arenas. In most of our discussions so far, we've concentrated on daily bar charts. The next step is to broaden our time horizon and to learn how to apply the tools we've learned to weekly and monthly charts in order to perform long range trend analysis. We'll accomplish that in the next chapter.