{"schema":1,"name":"Option premium turnover / cash-market turnover (x)","meta":{"source":"NSE business growth (equity cash 'cm' and equity derivatives 'fo' segments), via Data bank nse_business_growth_history","unit":"Money in Rs crore (1 crore = 10 million rupees). Ratios are plain multiples (x) unless the column ends in _pct. Put/call ratios are as NSE reports them (dimensionless).","method":"Monthly series; value_ago 1w therefore returns the previous month.","notes":["Notional turnover counts an option trade at strike x lot size (futures at contract value); premium turnover counts the option premium actually paid. NSE's premium-basis F&O total (fo_premium_total) is futures turnover plus option premium.","Monthly cash-market totals come from NSE's monthly rows, not summed days: NSE's cm daily series omits some sessions (Apr-May 2011, 22 Nov 2021, 7-14 Aug 2023).","The cm daily row for 13 Jun 2025 is column-shifted at source and is dropped; daily ratios are blank that day.","Monthly rows are dated by the month's last trading session (calendar month end before 2009, when no daily rows exist). Monthly bundles end at the last complete month."],"starts":{"fo_premium":"2015-04"},"start_rule":{"fo_premium":"NSE published option premium turnover from Apr 2015. Before that its premium-basis total equals futures turnover alone, so it is withheld."},"latest_month":"2026-09","latest_month_complete":true},"as_of":"2026-09-30","latest":0.4456,"value_ago":{"1w":0.3537,"1m":0.417,"1y":0.495},"history":{"start":"2015-04-30","observations":138,"min":0.066,"min_date":"2017-03-31","max":1.3081,"max_date":"2023-03-31","median":0.2287,"percentile_full_history":60.8696,"percentile_last_5y":11.4754}}