Alejandro Arce — home Thinking in Public
No. 06 · Investing · Live, updated daily

I wanted a daily update on the companies I'm watching.

So I built a machine that writes it for me every morning.

I wanted a personalized investing update in my inbox on the companies I follow, so I created a system where every morning this page pulls the latest stock price, scrapes the day's top news, and uses Claude to summarize what's happening in one line per company — plus the 3–5 best links if you want to dig in.

Then I got fancy, and asked it to simulate me investing $100 every Monday in each public company I'm tracking - you can see for yourself the results. (It's not the best idea)

Then I added a group of companies that are private but are expected to go public soon, just so I can keep my finger on the pulse.

And I get the one liners and stock price per company in my inbox and if I want more detail I come to this page and I can change it as I please when I please.

The story behind it: read the post

Weeks elapsed
Total invested
Portfolio balance
Profit / Loss

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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