Market data

Market data is a feed, a dashboard, or an API — not a strategy. Polygon.io and Databento are API/feed rows. Koyfin is a dashboard row and has carried a catalog deal on Plus. None of those sentences is a latency benchmark. If the profile does not state coverage, we do not invent US+EU+crypto in one badge.

The market data APIs collection is the editorial shortlist. This hub is every published Market Data tool.

If you need a venue that can also route, Interactive Brokers vs IG compares catalog broker fields. That is a different job from paying for a normalized OPRA or L2 feed.

What lives here

• APIs and historical — Polygon, Databento, Alpha Vantage. Read the license. Spreadsheet keys are not a production stack.
• Dashboards — Koyfin, TradingView (as a chart, listed under charting), quote pages. A layout is not a database.
• Screeners that belong with data — some rows overlap screeners. Use the tags; do not duplicate the same product in your head.

Honesty

No fabricated uptime, no fake “institutional” adjective unless the listing has a source. Delayed vs real-time is a contract. If we have not verified it, the cell stays Not verified. Read how to build a trading stack so you do not buy three overlapping feeds.

How to browse

Name the asset class and whether you need live, historical, or a human dashboard. Then open three profiles. Then check whether your broker already includes a feed you are about to repurchase. Featured below are three published rows. The directory is the rest of the category.