Sensex 17 Sep: Critical Levels for Expiry Trading

Sensex is currently trading at 74,336, positioned between the major support at 74,000 and resistance at 75,000. The option-chain structure indicates a relatively balanced but slightly positive setup, with the Put-Call Ratio (PCR) at 1.16. A PCR above 1 generally indicates comparatively stronger put positioning, suggesting that downside levels may have some support, although PCR alone cannot confirm direction.

The Max Pain level is 74,400, only 64 points above the current market price. This close proximity suggests that the index is trading near the option-chain equilibrium zone. For expiry traders, 74,400 becomes an important reference point for assessing whether the index remains range-bound or develops directional momentum.

The key support is 74,000, corresponding to the highest Put Open Interest. Sustained holding above this zone would keep the broader structure supported. On the upside, 75,000 is the key resistance, marked by the highest Call Open Interest. A decisive move beyond this level could indicate increasing bullish pressure, while rejection near 75,000 may keep the index within the 74,000–75,000 range.

Overall, the option data points to a critical 74,000–75,000 battle zone, with 74,400 acting as the central pivot for expiry-session interpretation. Price and OI changes need close monitoring.