Adding Coinbase (COIN) to growth portfolio

In my spreadsheet, you can see growth trades based on AI screener. It is somewhat an experiment to me. That is why I keep positions extremely small. Here are the rules:

  1. If a stock shows on the screener list, I buy the symbol.
  2. I buy approximately equal dollar position to match others.
  3. After I buy, I set a 7% trailing stop loss, updated weekly.
  4. I also have a predefined exit date.
  5. The position is removed either by hitting the stop loss or the target date.

 

Why this structure?

  • Each position ~ same dollar value

  • Each position has the same % stop (7%)

  • Therefore:

    • Each losing trade costs roughly the same dollars

    • Each winner contributes roughly comparable dollars initially

    • Big winners are allowed to outgrow the rest

 

This Solves a Huge Behavioral Problem

Without equal-dollar sizing:

  • A $50k position going down 7% hurts way more than a $5k one

  • You start managing feelings, not rules

With equal-dollar sizing:

  • Losses are boring

  • Wins stand out naturally

  • Decision quality improves

 

As you can see in the table below, despite some names being down more than 10%, the entire portfolio is down only 2.38% which is actually a really good result, showing that the structure works correctly.

Why there are a few titles down more than 10% if I have 7% stop loss rule? That is because, originally, I planned to close the positions only on a target date. I refined the strategy later on and added the stop loss rule. Those trades are marked as “Legacy trade” and they are allowed to drop additional 7% from the date I implemented the stop loss rule.

 

Today, I added Coinbase Global Inc. (COIN) position with a target date of May 22nd, 2026 and 7% stop loss.

 

 

 

We will hold this position until the target date or we get stopped out.

 

Stop loss updates

This coming Sunday, we will update all our stops as per this table:

 

Happy Trading!

 


 





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