12 Comments
User's avatar
Exponential Alpha's avatar

"From now on, once I think my biggest position is not my best idea, I know I have to adjust the portfolio" - Thanks for sharing, I find that I'm constantly testing my psychological biases when comparing my top 5 ideas.

Sam's avatar

Very entertaining and well written! Thanks Seb.

Seeing your journal entries, how you make your decisions and reviewing them was very insightful. Thanks for sharing this part of your journey!

Sebastian's avatar

Thank you. Happy you liked it!

Oleg's avatar

Thank you for the honest review of your investment case. This was the first write-up I have read from you. For me, it was an emotional rollercoaster ride—at first, I felt I had missed the boat, but in the end, I was glad I didn't sink with it. Please keep up the great work! I wish you all the best with your next investing endeavors and a good start into 2026!

Sebastian's avatar

Thank you. Appreciate it. All the best for you too!

Mark Thompson's avatar

Good self-scouting. Learning how to position-size is one of the most important steps an investor can take. I followed you into IVFH but I kept my position tiny. It’s hard to get out of a bad microcap. But if you keep the stakes small, it’s merely a flesh wound.

Matt Newell's avatar

This is fantastically honest after such a disastrous decline - well done. I’m sure you will do better for having made this mistake.

Sebastian's avatar

Thank you!

Dean's avatar

It's really great that you are sharing this part of your journey.

It's so hard to sell things when they are working and watch it run another 40-50% on momentum. I see why some investors set hard rules around position sizing. What the business is doing vs what the stock is doing can be so different.

Investing is hard. All we can do is try our best to learn from mis-steps and stay in the game.

Happy Holidays to you and your family

Sebastian's avatar

Yes totally.

Happy Holidays to you and your family too!

Mathieu Martin's avatar

Thanks for sharing this post-mortem, Seb. I can definitely relate to the psychological biases you highlighted. Your post was a great reminder of some of the pitfalls we all face. Happy holidays!

Sebastian's avatar

Thank you, Mathieu, glad you enjoyed it. Happy Holidays to you too!