Market Education / Collection
Learn how feeds, entitlements, sessions, and data timing affect what you see on screen.
8 topics in this collection · 0 existing full guides · 8 new drafts
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Real-time describes data delivered with little delay under a particular feed and entitlement; it is not a universal guarantee.
Full editorial draft available for owner review; not approved for public indexing.IEX is a single exchange feed; SIP data consolidates eligible U.S. exchange reports through the consolidated tapes.
Full editorial draft available for owner review; not approved for public indexing.Separate software pricing and market-data provider fees are different; the customer's Alpaca plan and entitlements matter.
Full editorial draft available for owner review; not approved for public indexing.Feed coverage, timing, session rules, and quote selection can cause platforms to show different values.
Full editorial draft available for owner review; not approved for public indexing.Contribution changes as the stock price moves, while reference weights, index levels, and feed conditions may also update.
Full editorial draft available for owner review; not approved for public indexing.The last available quote, official close, and overnight trading can describe different moments and venues.
Full editorial draft available for owner review; not approved for public indexing.Customers connect through their own Alpaca account in the desktop app; the public website does not collect API keys.
Full editorial draft available for owner review; not approved for public indexing.Learn how Cboe's VIX uses SPX option prices to estimate annualized 30-day volatility, why it moves, and why it does not predict market direction.
Full editorial draft available for owner review; not approved for public indexing.