haylaavo

BRITANNIA volatility

Option chain · IV across all F&O names
ATM IV
26.9%
HV 20d
22.7%
HV 30d
20.3%
IV percentile
87
IV rank
67
Implied vs historical volatility
ATM IVHV 20d
13.5%22.6%31.8%29 Sept 2517 Apr 2602 Nov 26ATM IV 26.89%HV 20d 22.66%
Put-call ratio (open interest)
0.40.91.429 Sept 2517 Apr 2602 Nov 26PCR 0.92

As of 02 Nov 2026. ATM IV = mean of call and put IV at the strike nearest the parity forward, nearest expiry with ≥ 7 days left; HV = annualised close-to-close st.dev. (split/bonus ex-dates excluded); IVP = % of sessions in the window with lower IV; IVR = position between the window low and high. Source: NSE F&O bhavcopy + equity/index closes.