About Udak

What Udak is

Udak is an independent project run from Spain. It publishes open records of how investing and betting rules behave when they meet real markets: bots for stocks, crypto and sports, live model portfolios, and an encyclopedia of model portfolios with a history back to 1926 and two calculators for building and finding portfolios.

The idea is simple: instead of promising returns, show the whole record, including the bad stretches.

Our principles

Everything is virtual. Each bot and each model has a virtual account; Udak holds no client money, is not a broker and sells no signals.

Everything is public. Every trade and every pick is in the log, with a chain of checksums so the history cannot be quietly rewritten. Losing accounts stay on the page, and no bot is replaced after the fact.

Rules are fixed in advance. Start dates and rules are written down before the first trade. Sports odds are recorded when a pick is made, before the event starts.

Where the data comes from

Current prices come from Yahoo Finance and are delayed. Long histories back to 1926 are spliced from open academic and official series (the Kenneth French Data Library, Robert Shiller's data, the Federal Reserve, the US Bureau of Labor Statistics, Nareit and others); every asset class, its sources and its substitutes are listed on the page Where the data comes from. Portfolios of famous managers in our articles come from public SEC 13F filings.

Limits you should know

A test on past data does not promise the future: we chose rules knowing the past, and the long histories use substitutes where an asset did not yet exist. Each page says so where it matters.

Nothing here is investment advice, a recommendation to buy or sell anything, or a call to place bets. Sports pages are for people aged 18 and over.

How the project is funded

Udak is free and has no advertising. In the future it may include affiliate links to brokers or tools; if that happens they will be marked as such and will not change what is shown or how it is ranked.

Corrections

If you find a mistake, write to vmyaros@gmail.com. We check it, fix it and, if it changes a published number, say so on the page.