Your worst trade already happened. Don't let it happen again.
A decision journal for private investors. Document why you invest and which criteria your portfolio strategy uses. Get informed when your investment thesis breaks. Think through decisions with your personal Steel Hands coach before you act on impulse.
Sound familiar?
You had a plan. Then the market moved.
Sold in a red week, regretted it a month later
A sharp stock move pushed the investment plan aside for a few hours.
Forgot why you bought it in the first place
Portfolio trackers show what happened. None remember why you decided.
Notes scattered across apps, spreadsheets and chats
Nothing in one place when you actually need it.
Built for
- Self-directed private investors
- Dividend and ETF savers
- People who want to learn from their own decisions
How it works
Record. Revisit. Review.
- 1Mar 4, 2026
Record your thesis
Buy
ASMLASML HoldingThesis“Sole supplier of EUV lithography; demand tied to long-term chip capex.”
Exit conditions- A credible EUV competitor emerges
- Wait 48 hours before selling on a red day
- 2Jun 12, 2026
Revisit holdings
ASML is down 9% today on export-restriction news. I want to sell.
Your coach
HoldNone of your break conditions matched. You set a 48-hour rule for drops.
Your thesis from March:“Sole supplier of EUV…”The coach works from your own records.
- 3Sep 14, 2026
Review
HoldASMLASML HoldingYour verdictThesis intactStretchedBrokenYour note“The export news didn't change the EUV position. Waiting the 48 hours gave me time to reread my thesis instead of reacting.”
Honest alternatives
Where Steel Hands fits.
| Compared on |  Steel Hands | Financial adviser | ChatGPT / General AI | Spreadsheet / Notes |
|---|---|---|---|---|
| Remembers your thesis and rules over time | Yes | Partial | Partial | Partial |
| Connected to your portfolio (read-only) | Yes | Partial | No | No |
| Brings your rules back at decision time | Yes | Partial | No | No |
| Compounds your judgement over time | Yes | Partial | No | Partial |
| Transparent, personalized strategy builder | Yes | Partial | Partial | No |
| Researches general questions | No | Partial | Yes | No |
| Executes trades | No | Partial | No | No |
Trust and security
Your decisions stay yours.
Read-only access
Steel Hands can see your trades. It cannot change anything.
Encrypted data
Data is stored securely and all connections are encrypted.
Never places trades
Every buy and sell happens with your broker, by you.
Delete your data anytime
Remove your data whenever you choose.
Features
Built around your own reasoning.
Decision journal
Remember why you invested
Every buy, sell and hold sits next to the reason you wrote at the time.
Coach
Pause before impulse trades
Before you act, your coach sends your own reasoning back to you.
Decision markers
See your decisions on your chart
Each journal entry is marked on your portfolio timeline.
Conviction scale
Measure your conviction
Record how sure you were, then see how it held up over time.
AAPLOver time
Watch your judgement grow.
AI coach that learns with you
Every entry you add helps an intelligent AI coach learn from that record alongside you. Its coaching gets sharper and more personal with every decision.
Write your first rules.
Notice your own patterns.
Decide with a calm head.
Pricing
Free while we build it with you.
€0
Free during the Alpha. Pricing after the Alpha will be announced before any charge.
- Decision journal
- Portfolio sync
- Strategy Builder
- Conviction tracking
What is an investment journal?
An investment journal is a written record of why you bought, held or sold an investment and what would make you change your mind. Steel Hands keeps that record next to your real trades, so you can review your decisions later instead of relying on memory.
Does Steel Hands give investment advice?
No. Steel Hands records your own reasoning and brings it back to you. It never tells you what to buy or sell. Every decision stays yours.
How is this different from a financial adviser?
An adviser can provide personalized financial planning and professional judgment. Steel Hands is a lower-friction tool for recording and revisiting your own investment reasoning. It does not provide financial advice or replace an adviser.
How is this different from ChatGPT?
ChatGPT can help research a question. Steel Hands retains your investment thesis, rules and portfolio context, so its coach can refer back to what you decided.
Can I use Steel Hands inside ChatGPT?
Yes. Connect Steel Hands as a plugin in ChatGPT and handle your investment decisions in one place. Research a stock, review your thesis, check a planned trade against your own rules and log the decision, all in the same conversation. Everything is saved to your Steel Hands journal.
Can I use Steel Hands with Claude?
Yes. Add Steel Hands as a connector in Claude to check a planned trade against your own rules and log the decision without leaving the conversation.
How does the AI coach work?
Before you act, message your coach. It checks the move against your thesis and exit conditions, quotes your own words back to you and flags any rule you set. The more you record, the better it knows your strategy.
How can I avoid panic selling?
Decide your exit conditions while you are calm and write them down, including a waiting rule such as 48 hours after a sharp drop. Steel Hands stores those rules and shows them back to you in your own words before you sell, so you decide against your plan instead of the headline.
How do I write an investment thesis?
Keep it to a few sentences: why you own the position, what has to stay true, and which events would prove you wrong. Those events become your exit conditions. The Strategy Builder in Steel Hands has a field for each part.
Is Steel Hands a portfolio tracker?
No. Portfolio trackers such as Parqet show what you own and how it performed. Steel Hands records why you decided and works alongside your Parqet portfolio.
Do I need Parqet?
No. You can log decisions by hand. Connecting Parqet adds your real trades and portfolio automatically, so every entry sits next to what actually happened.
What data do you access from Parqet?
Read-only access to your portfolios and their synchronized buy and sell activity. Steel Hands cannot change anything in Parqet or at your broker.
Which brokers and assets does Steel Hands support?
Any portfolio you track in Parqet, across the brokers Parqet supports, including stocks, ETFs and crypto. Without Parqet you can log decisions by hand.
Can Steel Hands trade on my behalf?
No. Steel Hands never places trades. Every buy and sell happens with your broker, by you.
What happens to my data if I leave?
You can delete your journal entries, rules and connections at any time from your account. Disconnecting Parqet stops the sync. Your Parqet data itself is unaffected.
What does it cost?
Steel Hands is free during the Alpha. Pricing after the Alpha will be announced before any charge.