Whalefax

What it does

Kalshi, Polymarket and Robinhood do not send a 1099 for event contract trades, so the record you file in April is yours to build. Whalefax turns any of their exports into real P&L and per-position tax detail, with FIFO lot matching and fees in the right place. It also rebuilds any public Polymarket wallet, including the losing positions that leave no trace on chain. Free, no account, and it runs entirely in your browser so your trades are never uploaded.

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  Whalefolio2018 · ▲95

  Stop updating your portfolio each time you trade crypto

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  Grizzly.Fi2022 · ▲228

  Earn a predictable income with your crypto

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  See the stock trades your representative is making2021 · ▲90

  Hey HN, I am the creator of senatestockwatcher.com and im finally happy to say that the same data that is filed from the House of Representatives is now live for everyone to watch, report against, and use. https://housestockwatcher.com When Senate Stock Watcher was released, the US was in the midst of an election year and after the COVID market crash the SEC had opened some investigations on 3 Senators for insider trading allegations. My interest in politics and finance lead me to build that website, but the number one question I always got was "where is the houses' data?" The…

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  Tracker 2126d ago · tracker212.com · ▲3

  No more spreadsheets — the Trading212 portfolio tracker app

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  PolyVictor20d ago · polyvictor.com · ▲1

  Follow smart money. Paper trade before risking real capital.

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  PolyCopy12d ago · poly-copy.net · ▲1

  Copy top Polymarket traders with a verifiable leaderboard

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  AstraPixels▲267

  ​​A pixel-art solar system at its real current positions.​

  Growth · 29d ago · astrapixels.com

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  WorldMap.lol▲197

  Put your startup on the map. Literally.

  Growth · 13d ago · worldmap.lol

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  The load-bearing vocabulary of Claude▲703

  Life & fun · 10d ago · louisabraham.github.io

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  Hey Noah▲641

  A proactive AI executive assistant for founders

  AI · Aug 2026 · heynoah.io

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  Clipto MCP▲640

  Let agents source clips from terabytes of your local video

  Work · 18d ago · clipto.com

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  Simple algorithm and color space to generate diverse skin tones▲627

  Hello HN! I found that picking out plausible but diverse skin tones for my digital art and game development projects was kind of difficult, and I got curious about if there was a way to define a color space that made it easy. I've built a color picker and procedural generation algorithm based on the space as well as a bunch of other fun js features and demos throughout the page that use the equations. If you find it interesting, I have lots of explanations of how I built it and what properties the space has. The methodology might be a bit shaky, but hopefully the result is as helpful for…

  Life & fun · Aug 2026 · toneyalexander.github.io

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  AdAnt AI▲608

  Claude for viral, high-converting social ads

  AI · Aug 2026 · adant.ai

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  I trained a 125M model to autocomplete piano on-device▲598

  I trained a 125M-parameter transformer to autocomplete piano performances in real time (~108 notes/sec on an iPhone 15). The idea is basically GitHub Copilot or Tabnine, except instead of prompting it with code, you prompt it by playing a few notes on a MIDI piano. The model then continues what you played, entirely on-device. The app is free if anyone wants to try it. Happy to answer questions about the model, training, Core ML, or the many things that didn't work.

  AI · 17d ago · simedw.com