I built a free 13F visualization/search platform to explore institutional ownership relationships
u/Secure_Decision_9433 ·
Reddit — r/algotrading
· May 17, 2026 at 10:02
· ⬆ 15 pts
· 💬 9 comments
| View on Reddit ↗
AI Summary
Summary
The author built a free platform (synapzer.com) to visualize and search 13F institutional holding data, aiming to simplify analysis of shareholder relationships and market patterns.
No specific investment thesis or trade idea is presented; the post is a tool announcement seeking early feedback.
Quality assessment: This is not well-researched DD or speculation—it is a product showcase with no actionable analysis.
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I’ve been building a free 13F search platform called synapzer.com
Right now it contains historical institutional holding data and lets users explore connections between funds and companies more visually than SEC EDGAR.
I originally started it because I wanted a better way to research shareholder relationships, institutional movements, and market patterns without manually digging through filings.
The SEC ingestion pipeline is still processing older filings, so the dataset isn’t fully up to 2026 yet, but I wanted to share it early and get feedback from people who actually work with 13F data. [synapzer](http://synapzer.com)