Understanding Open Interest & FYERS OI Limits

What is Open Interest and are there any limits set by FYERS?

Open Interest (OI) refers to the total number of active derivatives contracts (both options and futures) that are open at any given time. It acts as a key indicator of liquidity and can help identify trends and potential price shifts in the market. Open Interest is available for all strike prices in the options chain on FYERS platforms.

Open Interest Limits at FYERS

At FYERS, we set certain OI limits to ensure smooth and efficient trading for our clients:

Client-Specific Open Interest Limit:

  • Clients are allowed to hold up to 5% of the total open interest in any particular derivatives contract.
  • If a client exceeds this 5% limit, the specific underlying contract will be unavailable for further trading for that client.

Broader Open Interest Limit:

  • On a broader scale, if the total open interest for a particular underlying contract exceeds 15% across all our clients, FYERS will disable that contract for trading.

Note:

  • FYERS currently maintains optimal OI limits, ensuring hassle-free trading even in Deep OTM options, so you can continue to trade efficiently.

What if...

ScenarioOutcome
You exceed the 5% OI limit for a specific contractThat particular contract will be unavailable for further trading for you
Total open interest exceeds 15% across clients for a contractThe contract will be disabled for trading across FYERS for all clients
The contract is disabled due to OI limitsYou cannot trade that contract until the open interest is reduced
Tip: Keep track of open interest to avoid hitting the limits and ensure uninterrupted trading of your chosen contracts.

Last updated: 27 Jun 2025