Open interest vs volume is the common term in trading. volume & Open Interest are two measurements that relate to liquidity, or how easy it is to get in and out of an options position at a reasonable and fair price. Learn how this works and what to look for when placing trades! New traders are often confused about the difference between open interest and volume. What causes these numbers to change? And why is it possible to have volume with no change to open interest? Today we're examining two important measurements critical in helping traders describe liquidity and activity in options markets. These two terms open interest and volume are almost always displayed on any options detail page. On Robinhood, they