Making Sense Of Open Interest

Open interest is the total number of outstanding futures and options (F&O ) contracts at any point in time. In other words, these are open or yet to be settled contracts. For instance, if trader X buys 2 futures contract from trader Y(who is the seller), then open interest rises by 2.If another trader A buys 2 futures contracts from trader B, then the open interest rises to 4. Now, if trader X unwinds his position and the counter party is either Y or B, then the open interest in the system will reduce by that quantity.But if X unwinds his position, and the counter party is a new entrant, say C, then the open interest will remain unchanged. This is because while X has squared off his position, C’s position is still open. Read more of this post