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Show HN: Realtime 13Fs and track live institutional ownership for any ticker

GodelNumbering Tuesday, February 03, 2026

What it does:

- Polls SEC continuously at small intervals

- Fetches all variants of the 13F since the last poll

- Resolves every filing to its effective manager (one filing can contain data for multiple filers or proxy statements)

- Resolves every ticker in each filing to its effective instrument

- Updates the holdings data for the filer (e.g. https://www.signalbloom.ai/13f/filer/point72-asset-managemen...)

- Updates the ticker's 'current view' (re-calculating the aggregate current ownership live) e.g. https://www.signalbloom.ai/13f/ticker/NVDA

- Majority of 13F filers are also registered investment advisers, it links them intelligently (e.g. Blackrock as a 13F filer https://www.signalbloom.ai/13f/filer/blackrock-fund-advisors vs Blackrock as Investment Adviser https://www.signalbloom.ai/investment-adviser/blackrock-fund...)

Reports for: Every single one of over 10k asset managers that files 13F

Completely Free to use for non-commercial uses! Would love to get your feedback as I just finished building this. Thank you!

Summary
The article discusses the recent 13F filings of prominent investors, analyzing their investment strategies and portfolio changes. It provides insights into the stock market positions and decision-making processes of these high-profile investors.
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