instruments: sse50: name: 上证50 index_code: "000016" provider_symbol: sh000016 exchange: SSE price_type: price_index bootstrap_start: "2003-12-31" hs300: name: 沪深300 index_code: "000300" provider_symbol: sh000300 exchange: CSI price_type: price_index bootstrap_start: "2004-12-31" chinext50: name: 创业板50 index_code: "399673" provider_symbol: sz399673 exchange: SZSE price_type: price_index bootstrap_start: "2010-05-31" star50: name: 科创50 index_code: "000688" provider_symbol: sh000688 exchange: SSE price_type: price_index bootstrap_start: "2019-12-31"