Listen to a Business English Dialogue About Open interest
Eliana: Hi Elise, do you know what open interest is?
Elise: No, I don’t. What does it mean?
Eliana: Open interest refers to the total number of outstanding options or futures contracts that have not been closed or exercised.
Elise: Oh, I see. So, it’s like the number of contracts that are still active?
Eliana: Exactly! It represents the number of contracts that traders have entered into but have not yet been offset by opposite transactions.
Elise: How is open interest different from trading volume?
Eliana: While trading volume measures the total number of contracts that have been traded during a specific period, open interest specifically focuses on the number of contracts that remain open.
Elise: That makes sense. So, high open interest indicates high market activity?
Eliana: Yes, typically high open interest suggests that the market for that particular security is active and liquid.
Elise: Are there any benefits to monitoring open interest?
Eliana: Yes, it can provide insights into market sentiment and help traders gauge the level of participation and conviction in a particular contract.
Elise: Can open interest change over time?
Eliana: Yes, it can fluctuate as traders open and close positions or as new contracts are created.
Elise: Thanks for explaining, Eliana. Open interest seems like an important metric for understanding market dynamics.
Eliana: You’re welcome, Elise. It’s a useful tool for traders and analysts to assess market activity and sentiment.

