No course. No guru. A mirror.
The market didn’t
take your money.
You gave it away.
“You tell everyone it’s going fine.”
“I tell my partner everything is fine. But every week I add margin just to stay in the game.”
— The person this site is built for
“I took my loss. Then immediately made a bigger bet to get it back.”
— Also that person
“I invest my kids’ money too. I haven’t told them.”
— Still that person
“You play the simulation thinking it’s a game. Two minutes in, you think: this is about me.”
“I recognized myself in a decision I made three months ago. And for the first time I understood why.”
“It’s not comfortable. But it’s the first time someone told me the truth about how I invest.”
One decision.
Everything you need to see yourself.
Behind one vault is a winning position. Behind the other two: loss. Choose one — then we reveal a losing vault. Then you get one choice: stay or switch?
It seems like a game. It’s not.
Ready to see who you really are as an investor?
2 minutes. One decision. Your pattern — revealed for free.
Start the simulation → Completely free. No email required.One more simulation.
A different kind of mirror.
Mathematics knows exactly how much you should bet on any investment. Most investors bet 3x too much — or too little. Five rounds with known odds. You decide the stake. Then we show you what the formula says.
investors ignore
€97 — once.
No subscription. No AI. A human.
After the five simulations you receive a personal report — written by us, not generated by an algorithm.
Four more simulations.
One honest analysis.
Within 48 hours.
“I went short on Nvidia. It kept going up. I considered borrowing money to make the position even bigger. I didn’t — and that probably saved me. I built Lostfolio because I was the person this site is made for. I know exactly what it feels like to be right about everything — except yourself.”
— Lennard Duyvesteijn, founder Lostfolio
Lennard Duyvesteijn has been investing for over ten years. Not as a professional — but as a private investor who had to figure it out himself. He lost money, made mistakes, and came close to betting everything on one position. The turning point wasn’t a new strategy. It was the moment he learned to trust himself — and to dare to lose.
Since then, he has invested consistently and profitably. Not because the market got easier — but because he changed. Lostfolio is what he wished he had when he started.
Built by an investor.
Not a guru.
Lostfolio is a behavioural investing platform — not a course, not an investment advisor, not an algorithm. It is a mirror for private investors who want to understand why they keep making the same mistakes.
Questions? Contact us at simulation@lostfolio.com
Wondering what you actually get?
Read a real example.
Below is an example of a personal analysis report — based on five simulations, written for a real investor profile. This is what you receive within 48 hours after completing the simulations.
Not a template. Not a checklist. A personal analysis written by a human, based on your specific decisions.
David M. — The Committed Holder
Ready to stop
lying to yourself?
Five simulations. One personal analysis. The truth about why you keep making the same mistake — written by someone who made it too.
Start the simulations — discover your pattern €97 — once — no subscription Delivered within 48 hours by a human, not an algorithm.