position history

A time series tracking each institutional manager's stake in a single security across filing quarters, stored as one row per filer per security per quarter so stakes can be compared quarter-over-quarter.

In this catalog it appears concretely: - 13F Info - SEC 13F Filings Browser short_description — "manager pages, per-security holder lists, quarter-over-quarter comparisons, position histories and a clean JSON data endpoint". - 13F Info - SEC 13F Filings Browser coverage.granularity — "One row per manager per security per quarter". - WhaleWisdom - Hedge Fund and Institutional Holdings Tracker coverage — "13F holdings Q1 2001 to present".

A label on a listing is not a deliverable. Teams that license on the strength of a product-name match routinely find the shipped files cover a narrower slice than they assumed, and backfilling history afterwards costs more than the license ever did.

The failure mode is concrete: the label appears in a listing, the delivered files tell a different story, and the gap surfaces mid-project when fixing it is most expensive.

You rarely have to take a vendor's word for it. 82.4% of the 1,744 datasets Datadory catalogs are free to access, and 13F Info - SEC 13F Filings Browser short_description lets you inspect the real artifact before any budget is committed.

Treat every claim of this attribute as testable:

1. Open 13F Info - SEC 13F Filings Browser short_description and confirm its record — "manager pages, per-security holder lists, quarter-over-quarter comparisons, position histories and a clean JSON data endpoint" — against the files you actually receive. 2. Open 13F Info - SEC 13F Filings Browser coverage.granularity and confirm its record — "One row per manager per security per quarter" — against the files you actually receive. 3. Open WhaleWisdom - Hedge Fund and Institutional Holdings Tracker coverage and confirm its record — "13F holdings Q1 2001 to present" — against the files you actually receive. 4. Pin down update cadence in writing.

Adjacent concepts worth reading next: - json holdings endpoint - proprietary enrichment layer - SEC Form 13F