As expected expiry happened around 17600-650 (17624). the insider candle still holds on daily time frame and nifty forms a descending triangle. 17580 still hold as strong support. The day closure has taken support 50 SMA on 15min time frame.
Expecting a flat to small gap up opening on 21/4/23 (17600-650 range) wait for bound upside or downside for 17625 for direction of trade if break down sell below 17575 with sl at 17600 for downside targets of 17500/450/400 upside purchase above 17670 with sl of 17650 for targets of 17700/730/775