brokerjames

brokerjames on Hacker News

Re:Show HN: A modern alternative to OpenInsider, with more transaction... on Tuesday February 10, 2026 @10:20PM (#46970378)

Thanks

Re:Show HN: A modern alternative to OpenInsider, with more transaction... on Tuesday February 10, 2026 @10:20PM (#46970377)

Thanks so much — really glad the categorization is helping cut through the noise.

Re:Show HN: A modern alternative to OpenInsider, with more transaction... on Tuesday February 10, 2026 @10:20PM (#46970373)

Thanks! OpenInsider is absolutely the OG in this space. To answer your questions: Latency: We poll the SEC RSS feed continuously. The parsing logic (classifying the transaction types) takes a few seconds. So, while not 'HFT real-time' (microseconds), it is 'human real-time' (usually appearing on our site within seconds of the SEC publishing). Sufficient for manual analysis, but maybe not for algos front-running the market. Business Model: We plan to keep the web interface (including the granularity and filters) free for public research. We believe this level of data transparency should be the standard. Our plan for a future 'Pro' tier focuses on automation and convenience, such as: Real-time Email alerts for specific tickers/insiders. API access for developers. Bulk CSV exports for backtesting. The goal is to make the best research tool free, and charge for the infrastructure tools."

Re:Show HN: A modern alternative to OpenInsider, with more transaction... on Tuesday February 10, 2026 @10:15PM (#46970329)

Hi HN, OP here. OpenInsider is great and inspired this, we just wanted to modernize the stack. We focused on parsing Form 4s with more granularity (distinguishing grants/options from open market buys) and building a faster, mobile-friendly UI. Would love to hear your feedback on the data accuracy!

Show HN: A modern alternative to OpenInsider, with more transaction types

Posted by brokerjames on Tuesday February 10, 2026 @10:03PM
from the show-hn dept.

https://www.13radar.com/insider/

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...

( Read More... | 8 comments | 6 points | on HN )

Re:Show HN: An A2A-compatible, open-source framework for multi-agent n... on Thursday November 20, 2025 @01:36AM (#45989625)

Nice work — making multi-agent networks A2A-compatible in an open-source framework looks very promising.

Show HN: 13Radar – Real-Time Hedge Fund Portfolio Analytics

Posted by brokerjames on Sunday November 16, 2025 @08:04PM
from the show-hn dept.

https://www.13radar.com/

Hi HN,We’re a small team working on 13Radar.com, which we launched about two weeks ago after 4 months of development. I’m the founder, and together with the team we’re building a platform that tracks hedge fund portfolios in real-time based on SEC Form 13F filings.AI has been a major helper in our workflow. For a single webpage, we often consult multiple AI systems in parallel, generating...

( Read More... | 3 comments | on HN )

Re:Ask HN: What Are You Working On? (Nov 2025) on Friday November 14, 2025 @01:40AM (#45924488)

Your website grew to several thousand UVs per month in just two months — that’s impressive!

Re:Ask HN: What Are You Working On? (Nov 2025) on Friday November 14, 2025 @01:35AM (#45924463)

I’ve been working on http://www.13radar.com for the past 4 months, and we launched about two weeks ago. The platform tracks hedge fund portfolios in real-time based on SEC 13F filings.

I’m responsible for product research, analysis, design, development, and promotion. Most of the workflow was powered by AI tools — more than 60% of the research, design, and coding involved AI assistance. Initially we used Bootstrap for responsive design, but later switched to a lighter TailwindCSS framework.

Right now traffic is very low (just a few dozen users per day), and I’m trying to figure out whether that’s a product issue or simply a lack of promotion. Honestly, it’s a bit discouraging, but I’m hoping to learn from feedback and iterate.

Curious if anyone here has experience growing early-stage products with niche financial data — how did you approach the balance between product refinement and marketing?