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Are you following a reporting manager across stocks, or investigating the reported holders of one ticker? Start with that question before choosing a 13F tracker. The first workflow needs comparable manager portfolios; the second needs security-level holder records and share-count context. Dilutracker publishes this guide and offers a ticker-level holder view. For named services and documented product comparisons, see our six-tool 13F tracker roundup.
Follow a manager across quarters
Start with the reporting manager's legal name and SEC Central Index Key, or CIK. Check that the candidate covers that entity and the quarters you need. A familiar brand name alone is a weak match when related reporting entities have similar names.
Open two comparable quarter-end reports and follow the links to their information tables and any amendments. Confirm how the tool handles amended filings and stock splits before comparing share counts. Keep the original filing references with your notes so you can trace a displayed change back to its source.
Use those comparisons to identify reported position differences worth researching. They do not establish the dates of transactions or the manager's motive. If your project depends on several years of history, test an older quarter as well as the latest one before choosing a tool.
Investigate the reported holders of a ticker
Confirm the issuer and security class first. Common stock, another share class and an option position should not become interchangeable rows in your analysis. Inspect each holder's reporting period, filing date and underlying source; a recently filed document can describe an older position.
Check the date and security class of any shares-outstanding denominator used for an ownership percentage. A quarter-end holding divided by a later share count answers a different question from ownership at that quarter end. Portfolio weight is different again: it measures position value within the reported portfolio, rather than the holder's percentage of the issuer's shares.
The Dilutracker 13F tracker provides ticker-level reported holders alongside issuer financing context, including float, dilution instruments and cash runway. Use that context to investigate changes in share supply. The view does not establish how a holder acquired shares or attribute a position to an offering; check the underlying filings for those questions.
Test two candidates with the same sample
Choose one manager or one ticker and the same reporting quarter in both candidates. Use the sample that matches your workflow; test both only if you need both. Follow a source link, save the filing reference and record missing periods or access restrictions. Compare what you can actually inspect and export.
| Check | Manager research | Ticker research |
|---|---|---|
| Coverage | Target manager/CIK and required quarters | Correct issuer and security class |
| Source and dates | Quarter end, filing date and amendments | Each holder's reporting date and filing link |
| Comparability | Consistent split treatment across quarters | Dated, comparable share-count denominator |
| Usable access | Required history and export access | Required holder fields and export access |
An absent row may reflect tool coverage or public-reporting limits. It is not confirmed zero ownership. If a required period, source or field is missing, note that gap before deciding whether the candidate can support your research.
Read disclosure as a delayed, partial snapshot
Form 13F covers quarter-end reportable securities and is generally due within 45 days, adjusted for weekends and holidays. A February filing generally describes December 31 holdings, not January trades; a filing alert announces disclosure. Shorts are excluded, and permitted small-position omissions, confidential treatment and amendments limit the public picture. It is not a complete current or net-exposure portfolio. See the SEC's Form 13F FAQ.