IEX vs. SIP Market Data
IEX is a single exchange feed; SIP data consolidates eligible U.S. exchange reports through the consolidated tapes.
Read the draftReal-Time Market Data
Customers use their own Alpaca accounts and enter API credentials locally in the Market Watch 360 desktop app. The public website does not ask for keys and does not stream customers' market data.
Draft updated · owner review pending
Alpaca controls the customer's market-data plan, credentials, and feed entitlements. Market Watch 360 displays and analyzes the data available through that connection. It is display-only software and does not place trades.
A support ticket may need the app version, selected feed, approximate time, and a description of an error. It should never include an API key, secret, password, or full credential-dialog screenshot. If a key has been shared accidentally, rotate it through Alpaca's account controls.
In the current development preview, open Connect → API Key…, enter the API Key ID and Secret Key, choose Paper trading or Live, select Test connection, then Save. The pair is stored in Windows Credential Manager. IEX is the default one-exchange feed; SIP access depends on entitlement, and SIP delayed is a separate feed choice. Recheck these steps against the release build.