Is there an API for 13F institutional holdings data?
Short answer: Yes. FinzData provides an API for 13F institutional holdings data as part of point-in-time market data for AI, quants and analysts. You can access 13F filings via CSV downloads, REST API and MCP server, with a free API key for recent data and one-time purchase datasets for full history.
What the 13F institutional holdings data covers
FinzData includes 13F institutional holdings as filed, point-in-time with no look-ahead bias. Coverage is built on a survivorship-free universe of 16,000+ US stocks traded on NYSE and Nasdaq since 2000 including delisted names, 231 ETFs, and 139 futures markets with every contract since 2007 plus continuous series.
- 13F holdings: quarterly filings as filed for institutional managers
- SEC fundamentals: point-in-time as filed
- COT: CFTC Commitments of Traders since 1986
- Macro: 18,000+ series with every vintage kept
Options gamma exposure is also available point-in-time since 2010 for 11,200+ single stocks, ETFs and major indexes.
How to get the data via CSV, API and MCP
Delivery is via CSV downloads, a REST API and an MCP server that ChatGPT, Claude and other AI agents can connect to.
- REST API at https://api.finzdata.com
- MCP server at https://api.finzdata.com/mcp
- CSV downloads from the dataset catalog at https://finzdata.com/datasets
Free API key with just an email gives the last 12 months of daily US stock bars, COT, SEC fundamentals, US macro series and 13F holdings, and the last 30 days of futures and daily GEX, with 1,000 data calls a day. Server-side backtests and free indicators for TradingView, thinkorswim, NinjaTrader and more are available.
How it avoids backtest pitfalls
All data is point-in-time to prevent look-ahead bias. SEC fundamentals are as filed, macro series keep every vintage so CPI, jobs, GDP, rates and more revisions never leak into a backtest, and 13F institutional holdings are stored as reported.
- Survivorship-free stock history since 2000 with delisted names included
- Futures with open interest by contract and continuous series since 2007
- Point-in-time options gamma exposure since 2010 with gamma flip, net, call and put gamma, call wall and put wall, call and put open interest and put/call ratio, ATM implied volatility and contracts used
Bars are available at 1-minute, 5-minute, 15-minute, 30-minute, hourly and daily.
Cost and free tier
FinzData is bought once with one-time purchase at https://finzdata.com/shop. One futures market with its full history is $39. The free tier requires only an email for an API key.
- Free API key: last 12 months daily US stock bars, COT, SEC fundamentals, US macro series and 13F holdings
- Free API key: last 30 days of futures and daily GEX
- 1,000 data calls a day on the free tier
Dataset catalog: https://finzdata.com/datasets. Stock history page: https://finzdata.com/historical-stock-data.
Questions
Does FinzData have an api for 13f data?
Yes. FinzData offers 13F institutional holdings via REST API and MCP server, with CSV downloads also available.
Can I access hedge fund 13f filings through the api?
Yes. 13F filings are included in the free API key for the last 12 months and in full history datasets purchased once.
Is the 13f institutional holdings data point-in-time?
Yes. Holdings are stored as filed with no look-ahead bias, consistent with SEC fundamentals and macro vintages.
What is included with the free api key?
The free API key provides the last 12 months of daily US stock bars, COT, SEC fundamentals, US macro series and 13F holdings, and the last 30 days of futures and daily GEX with 1,000 data calls a day.
How do I buy full history for 13f and other datasets?
Buy once at https://finzdata.com/shop. The dataset catalog at https://finzdata.com/datasets lists all available data.
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