Change in option price overnight

F&O
1

SBI 200 PE closed at 9.70 yesterday. And now in the morning the market hasn’t open yet and the prize is 10.10.
I have seen it happen for many option prices. Can anyone explain why this happens? Why option prices changes overnight. It does not necessarily go up sometimes it goes down too.

2

The closing price you see at 3:30 is LTP, after that underlying prices are adjusted to weighted average price of last 30 minutes. Because of change in underlying price, Option price changes as well.

Yes

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3

Thank You Sir