nowfound

Commerce · February 11, 2026

A modern alternative to OpenInsider, with more transaction types

Hi HN, I've been working on 13radar.com, a site focused on tracking institutional holdings. Today, I’m releasing a beta version of our new Insider Trading Tracker. Like many of you, I've used OpenInsider for years. It's a legendary tool, but the UI hasn't changed in decades, and the data classification can be broad. I wanted to build something that feels modern and digs deeper into the data. How it differs from existing tools (OpenInsider / GuruFocus): Granularity: We parse SEC Form 4 filings to categorize transactions into finer types. Instead of just "Buy/Sell," we try to…

A modern alternative to OpenInsider, with more transaction types launched on February 11, 2026 with 6 votes, #1,572 of 16,627 launches that month and more than 75% of that year's launches.

Visit 13radar.com ↗Alternativestop 9% of February 2026

What it does

Track real-time opportunistic insider trades by CEOs & CFOs. Filter out 10b5-1 planned sales to find high-conviction stock signals from SEC Form 4 filings.

In the maker’s words, at launch

Hi HN, I've been working on 13radar.com, a site focused on tracking institutional holdings. Today, I’m releasing a beta version of our new Insider Trading Tracker. Like many of you, I've used OpenInsider for years. It's a legendary tool, but the UI hasn't changed in decades, and the data classification can be broad.…

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