Barchart is a provider of futures, equity and foreign exchange market data. The getSectors API provides returns using weighted alpha on sectors covering multiple periods, including 1-day, 1-month, 3-month, 6-month, 9-month, 12-month and year-to-date. All Barchart OnDemand APIs allow for queries in JSON, XML, and CSV formats. Developers can visit BarChart's site to request permission for API usage.
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