Changes to Latest available intraday quote for one active U.S. listing (consolidated SIP) or one listing named as MIC:TICKER on a Canadian exchange (XTSE, XTSX, XCNQ, NEOE) or a Euronext exchange (XPAR, XAMS, XBRU, XMSM, XOSL, MTAA, XLIS) — a market reading, not a daily bar. Requires a paid plan: for U.S. listings Pro receives real-time trade and bid/ask and Plus the same fields 15 minutes delayed; for Canadian listings both receive the last price in the listing's currency, real time on XTSE and XTSX and 15 minutes behind on XCNQ and NEOE (delayed=true), and for Euronext listings both receive the last trade 15 minutes behind (delayed=true); neither carries bid/ask. Free receives 403 because it covers end-of-day data only. SessionDate and ExpectedSessionDate identify the market sessions involved; Stale is true when the reading predates the expected session, so an old print is never silently presented as current. Use /v1/stocks/{ticker}/prices for stored traded daily history when available.