PREFER for HISTORICAL closing prices and daily returns on a specific past date or date range — "what did the S&P 500 close at on August 7", "closing prices and daily returns for these four indices last Friday", "AAPL close on 2026-06-30". Accepts one or more Yahoo Finance symbols (indices ^GSPC/^IXIC/^DJI/^SOX/^RUT, stocks, ^TNX yields, GC=F commodities, BTC-USD crypto, EURUSD=X FX — same symbol space as get_quotes) plus start_date/end_date, and returns each trading day's close WITH the previous close and the computed daily return percent, per symbol. Keyless (Yahoo Finance). Use get_quotes for CURRENT prices; this tool is for any date in the past.
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