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Data from SEC EDGAR filings: company financials and 13F holdings.

Disclaimer: QW Research is provided for informational and educational purposes only and is not investment advice, a recommendation, or an offer to buy or sell any security. Data is derived from public SEC 13F filings and may be incomplete, delayed, or inaccurate. Do not make investment decisions based on this content. QW Research does not share in any profits and accepts no liability for any losses or decisions made using this information. Past performance does not predict future results.

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QW Research Data API

SEC EDGAR as a clean API — company fundamentals, insider trades and institutional ownership, so you don't maintain the pipeline.

Full endpoint reference → /docs

Deduplicated filers

No parent/subsidiary double-counting that pushes ownership over 100%. Filer groups resolved.

Canonical tickers

CUSIP→ticker mapping done properly — the ~half of raw CUSIPs that don't resolve, resolved.

Point-in-time correct

Amendments and restatements handled, back to 2013. What was known when, not silently overwritten.

Breadth

Company fundamentals from XBRL, Form 4 insider trades and 13F holdings on one surface. N-PORT (fund holdings) next.

Get a free key

Free tier is 200 requests/day — enough to prototype against any of it.

Free tier: 200 requests/day. No credit card. We store only a hash of your key.

Call the API with your key

Send your key as a Bearer token — for example, the top institutional holders of a ticker:

curl -H "Authorization: Bearer <api_key>" \
  https://qwresearch.com/api/v1/demo/top-holders/AAPL

Check your key and today's usage any time at /api/v1/keys/me.

Need higher limits, historical bulk, or N-PORT? admin@qwresearch.com