Compounder

What it does

Compounder turns SEC 13F filings into clean, readable pages. See what investors like Buffett, Ackman, and Li Lu hold, what they bought and sold this quarter, and which stocks multiple funds are buying. Data straight from public SEC filings. Free, no account. Educational tool, not investment advice.

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  Wallstreetlocal – View investments from America's biggest companies2024 · github.com · ▲299

  Hello Hacker News! My name is Anonyo, and I am a seventeen-year-old from Southeast Michigan. This is wallstreetlocal, my passion project for the last year (and a half). I've posted this before, but I've finally open-sourced this entire project, so I thought I'd post it again. Heres the short pitch. The Securities and Exchange Commission (SEC) keeps record of every company in the United States. Companies whose holdings surpass $100 million though, are required to file a special type of form: the 13F form. This form, filed quarterly, discloses the filer's holdings, providing transparency into…

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  Zinvest2021 · apps.apple.com · ▲74

  Buy stocks in US and Asia, commission-free, now on iOS

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  13Radar – Real-Time Hedge Fund Portfolio AnalyticsNov 2025 · 13radar.com · ▲7

  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 different versions and comparing them side by side before deciding on the final design or implementation. More than 60% of the research, design, and coding involved AI assistance. For UI design we used…

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  CompoundChartJan 2026 · compoundchart.com · ▲2

  Visual compound interest for complex, multi-asset portfolios

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  Dividend StackerJul 2026 · dividendstacker.com · ▲10

  Dividend Stacker helps dividend investors research high-yield ETFs and plan income with data-driven tools. It shows estimated next distributions, full payout histories, and total-return numbers for families like YieldMax, Roundhill, NEOS, Defiance, and REX Shares. Use calculators

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  Swiss Compound Interest CalculatorFeb 2026 · getrates.ch · ▲3

  Free compound interest calculator with financial tracker

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  Fundraisly▲1,537

  AI fundraising agent that finds investors and books meetings

  AI · Jun 2026 · fundraisly.com

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  Homebrew 6.0.0▲1,481

  Today, I’m proud to announce Homebrew 6.0.0. The most significant changes since 5.1.0 are a new tap trust security mechanism, the new faster, smaller, default internal Homebrew JSON API, sandboxing on Linux, better defaults informed by our user survey, many brew bundle improvements, improved performance and initial support for macOS 27 (Golden Gate). Happy to discuss any questions here!

  Dev tools · Jun 2026 · brew.sh

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  Performative-UI – A react component library of design tropes▲1,181

  Hi HN! I was super frustrated at apps like tiktok and wechat preventing me from saving or downloading the animated gifs, so I made a little tool to turn a screen recording into a slack-sized emoji. Hope you get some value from this!

  Life & fun · Jun 2026 · vorpus.github.io

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  Upstream▲976

  The inbox designed for humans and agents

  AI · Jun 2026 · upstream.do

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  Goldfish▲958

  Press Option. It knows your work and replies like you

  AI · Jun 2026 · goldfish.sh

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  I made Google Trends for Hacker News by indexing 18 years of comments▲822

  Search 18 years of Hacker News and chart how any topic, tool, or person trended. Overlay terms to compare their rise and fall across 45M posts and comments.

  Life & fun · Jun 2026 · hackernewstrends.com