Massive (formerly Polygon.io)
Updated Oct 22, 2026
PaidBacktesting & strategyCoder
⚠ What to watch out for
Check the license: individual plans are for personal use only. Free or cheap feeds may be delayed.
How we checked this
- Official site
- massive.com (opened Oct 22, 2026)
- Pricing
- Individual plans from $29/mo (fundamentals) to $199/mo (stocks); some datasets $99/mo · source, checked Oct 22, 2026
- Markets
- stocks, options, crypto (Not verified yet on the official site)
- How it touches your money
- Never touches your money. A market-data API. It never touches your money. (Not verified yet)
- Known incidents
- No incidents found in our search (Oct 22, 2026). (searched Oct 22, 2026: breaches, outages affecting funds, regulator actions, lawsuits, data leaks)
Facts come from the official pages linked above, checked on the dates shown. Prices change; confirm on the vendor's site before paying. How we review tools. This is a software description, not a recommendation to buy any tool, security or crypto asset.
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Weekly tool notes
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