Sudeep Shah, Head - Technical and Derivatives Research at SBI Securities, believes the Nifty has a strong possibility of holding above the 23,000 mark and attempting a move towards 23,500 next week, provided it sustains above its key support zone of 22,800-22,750. Nifty has formed a strong bullish candle on the weekly chart after a Doji formation in the previous week, indicating a potential trend reversal from a crucial support area, he said in an interview with Moneycontrol.