Why is my MIS or CO position not auto squared off?

One possible reason could be that the stock hit its circuit limits, which means the maximum daily price movement was reached. When this happens, exchanges halt trading on that stock for a certain period of time, which could prevent your MIS or CO position from being automatically squared off.

Another possibility is that your broker may have technical issues or glitches that prevent auto-squaring off. In such cases, you may need to manually square off your position or wait until the issue is resolved. But I'd suggest reaching out to your broker to confirm the cause of the issue and the next steps.