Private judgment intelligence for investors
OA builds a private model of how you invest, proves it against decisions it never saw, and gives you a judgment model you can carry into every new deal.
Today: the Judgment Backtest. Live comes next.
• For individual investment decision-makers • Evidence-linked • Model-independent
JUDGMENT BACKTEST
SAMPLE OUTPUT
Your history, tested.
OA builds from earlier history only, then tests whether that model reconstructs decisions it was never allowed to see.
18
held-out investment decisions
↑
Compared against always passing
↗
Reasons checked against source evidence
Reasoning evidence from AI history · Decision evidence from email, CRM and memos · Reality evidence from outcomes · Confirmed judgment from you
Bring the intelligence you already built
Start with the history that already exists.
Your inbox shows what you did. Your AI conversations often show what you were weighing, what you rejected, and when your thinking changed. OA brings those sources together without treating brainstorming as a decision.
G
Gmail
Decisions, introductions, follow-ups, pass reasons, partner conversations and the record of what actually happened.
DECISION EVIDENCE
GPT
ChatGPT history
Import your exported conversation history to recover the questions, alternatives, corrections and reasoning that shaped your view.
REASONING EVIDENCE
C
Claude history
Bring the analytical work you have already done with Claude into the same persistent model of your investment judgment.
REASONING EVIDENCE
The core idea
01
What you believed
The principle or concern that mattered at the time.
02
What you decided
Pass, pursue, invest — tied to the information available then.
03
What happened
The later outcome that strengthened, weakened or complicated the original judgment.
04
What changed
The updated belief that should now affect the next decision.
The living record
OA turns scattered historical evidence into a versioned record of how you decide. The model changes when your judgment changes. The history stays attached.
Decision Ledger
Each real pass, pursue or invest, with date, context, stated reason and supporting source.
01
Judgment Model
The beliefs behind those decisions — with a state that changes as evidence accumulates or your thinking evolves.
02
Outcome Ledger
What happened after the decision, what the outcome taught you, and which earlier beliefs it strengthened or changed.
03
Evidence Graph
Every important conclusion opens back to the email, conversation, memo, decision or outcome that supports it.
04
Free, invite-only
The latest usable decisions are held back. OA builds your Judgment Model only from earlier history, then predicts the decisions it was never allowed to see — including the reasoning and evidence behind each prediction.
Request a backtest →
YOUR HISTORY HELD-OUT TEST
CUTOFF
Mar ’24 Company 18 LEARN
Jun ’24 Company 24 LEARN
Oct ’24 Company 31 LEARN
Feb ’25 Company 37 HIDDEN
Aug ’25 Company 45 HIDDEN
Jan ’26 Company 52 HIDDEN
Private by design
You choose the sources, date ranges, folders, projects and exclusions. Access is read-only.
Before you connect anything, we tell you in writing where your data is processed and which AI models see it.
1
Your selected history
Email, AI conversations, memos, CRM or other approved sources.
2
Private OA processing — sources are structured into decisions, beliefs, relationships and evidence.
3
Written disclosure first — you see where your data goes and which AI models touch it before anything is connected.
4
Your Judgment Model — the persistent state remains tied to you, not to whichever frontier model happens to be used.
The operating loop
History becomes state. State changes the next decision.
The product gets more useful as decisions, outcomes and corrections accumulate. The model can change. Your judgment state persists.
01
Import history
02
Build judgment model
03
Backtest it
04
Confirm / correct
05
Read the next deal
06
Update from outcome
OA JUDGMENT
We are starting with a small group of individual investors. Bring the history you choose. Our team builds the model, holds back later decisions, and sends you the result within a week.
Built by Freddie Brown and Osman [OSMAN SURNAME], OA Agency.