Daily end-of-day stock prices (open/high/low, close, split- & dividend-adjusted adj_close, volume) for US exchange-listed companies. Sourced from a market-data feed, not SEC filings.

Markets are open only on business days, so rows exist ONLY for trading days — the data IS the trading calendar:

• Price ON OR AFTER a date (a single date, or an announcement landing on a weekend): pass start_date= alone; the FIRST row of the short forward window is that date or the next open day.

• Price ON OR BEFORE a date: pass end_date=; the LAST row is that date or the prior open day.

Use Cases:

• "AAPL close on 2025-07-28" -> get_stock_price("AAPL", start_date="2025-07-28")

• "DKNG total return 2025-01-02 → 2026-02-27" -> get_stock_price("DKNG", start_date="2025-01-02") + get_stock_price("DKNG", end_date="2026-02-27"), first/last close (cheaper than one 14-month window)

• "SUI +1/+14/+30 days after an 8-K" -> start_date=, end_date=<announce + ~32d>; pick rows on/after each

• No dates -> the latest price

When the window spans ≥2 trading days, the response also reports the first/last close and the period return on BOTH close (point-to-point) and adj_close (split/dividend-adjusted: the economic return).

Each response also includes the latest REPORTED period-end shares outstanding on/before your end date (period-end balance-sheet count; dei cover where absent) plus the implied market cap at the latest close — use these for market-cap / EV / P/B math instead of deriving share counts from NI/EPS (that yields weighted-average shares, a different basis).

Coverage: ~8,400 US common-equity tickers, end-of-day only (no intraday/real-time, no options/FX). Recent history is dense; deep pre-2014 history may be sparse. Period-end multiples (P/E, EV/EBITDA, P/B): get_metric_history, whose metric_id lists the primitives for a CUSTOM multiple (e.g. lease-adjusted EV) priced with this tool.