Alejandro Arce — home Thinking in Public
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Every morning this page takes the last closing price of each stock, plus Bitcoin, gold and the big indexes, and pulls the day's top news for each one.

Then two players make a call on every name. The rules ask two questions: is the price above its usual price, and is it higher than a year ago? Claude reads the same numbers and the news, and makes its own call. You see both calls and the reasons side by side.

Each player runs $100,000 of play money on its own calls, next to a third player that buys everything and never sells. Every Buy and Sell gets graded a month later against the S&P 500, so you can see which one gets it right more often.

The calls come to your inbox every weekday morning if you want them.

Weeks elapsed
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Total invested
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Portfolio balance
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Profit / Loss
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Want a machine like this one?

If you have an idea like this you'd like to build, message me at hi@arce.ca.

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