{"schema":1,"name":"Median 1-year tracking difference of equity ETFs, percentage points","meta":{"source":"NSE capital-market bhavcopy (closes, traded value); AMFI NAV history, TER, quarterly AUM and tracking-difference disclosures; NSE total-return indices; corporate actions (ETF distributions and splits)","method":"docs/methods/etf.md","notes":["Premium = exchange close / NAV - 1, on days the ETF traded. The close is at 15:30; NAV is struck on end-of-day prices, so the two are not simultaneous. For ETFs holding foreign assets (category 'international') the gap is hours of foreign trading; they are kept out of the domestic aggregates.","Unit splits are detected against NAV and undone; price-to-NAV unit factors are constant between detected splits.","Tracking difference = annualised NAV total return minus annualised benchmark TRI return, percentage points (negative = the ETF lagged). Gold ETFs are compared with the domestic gold price in rupees, a rough check only.","Traded value is in Rs crore. Median 20-session traded value counts sessions with no trade as zero."],"frequency":"monthly"},"as_of":"2026-10-05","latest":-0.2259,"value_ago":{"1w":-0.262,"1m":-0.262,"1y":-0.1891},"history":{"start":"2008-11-28","observations":216,"min":-2.3107,"min_date":"2010-02-26","max":-0.0804,"max_date":"2016-03-31","median":-0.2998,"percentile_full_history":75.9259,"percentile_last_5y":70.4918}}