Weekly Derivatives Insights 28th September 2026 - Axis Securities
The Week That Was:
• Nifty futures fell 0.8% (191.8 points) to close at 23,186.70 as open interest jumped 4.3% with 9.65 lakh shares added to 233.61 lakh, signaling short build-up and reinforcing a bearish near-term bias.
• Bank Nifty futures slid 1.5% (863.4 points) to settle at 55,663.60 as open interest spiked 16.1%, adding 3.92 lakh shares to reach 28.78 lakh, reflecting heavy short build-up and elevated banking-sector vulnerability.
• India VIX advanced 6.8% from 11.39% to 12.16%, pointing to expanding volatility expectations and demanding tighter risk-management for directional strategies.
• FIIs Long Short ratio fell from 0.14 to 0.13 as foreign institutional investors unwound index futures longs while building fresh shorts, deepening a bearish bias with absolute short positions remaining well ahead of long holdings.
Nifty Open Interest Put-Call Ratio
• Nifty Put-Call Ratio (PCR) dropped 0.09 this week as call additions outweighed put unwinding, signaling increased bearish resistance and suggesting traders adopt defensive or short-biased strategies to navigate limited market upside.

Volatility Analysis
• The IV curve highlights a broad volatility crush versus last week, contrasting with the elevated premiums.
• This parallel downward shift signals that fear is evaporating. Traders are aggressively unwinding downside protection and shorting premium, reflecting renewed structural market confidence and abandoning defensive hedging.

• Nifty options (Oct Exp) positioning shows overhead resistance shifting lower to 23,500–24,000 while key support consolidates around 23,000. Combined with aggressive short buildup, derivatives concentration points to a prevailing bearish sentiment and a narrower, downward-tilted trading range.
• Speaking of open interest changes, the 23,500-strike Call and 23,500 strike Put saw the maximum addition.
• Nifty futures are anticipated to fluctuate between 22,500 and 23,500, with the 23,500 mark acting as a key inflection point that will determine the market's short-term trajectory.
Bank Nifty Open Interest Concentration (Monthly)

• Bank Nifty (Oct exp) reflects heightened bearish sentiment following aggressive short build-up, with options positioning shifting lower week-over-week. Lower strike concentration establishes primary support at 55,000, while consolidated overhead open interest defines strong resistance spanning 56,000 to 58,000, maintaining a capped, downside-tilted range.
• Speaking of open interest changes, the 56,000-strike Call and 58,000 strike Put saw the maximum addition, alongside the 58,000 strike Call and 56,000 strike Put.
• Bank Nifty futures are poised for range-bound consolidation between 54,000 and 57,000, heavily Sources anchored around the 56,000 pivot.
Bank Nifty Change in Open Interest (Monthly)

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