Historical strategy research
Fin Lab
Turn a vague investment timing question into a fair historical comparison that someone can inspect instead of simply trust.
- 01INPUTA plain English investment question
- 02SYSTEMA deterministic, equal capital backtest
- 03OUTCOMEA graph and ledger that explain the difference
Repository grounded case study. No staged product demo.
WHY IT EXISTS
The product starts with the problem.
Investment comparisons are easy to distort. One schedule may receive more money, a closed market day may disappear, or dividends may be handled differently. Fin Lab makes those assumptions visible and holds every scenario to the same capital budget and date window.
WHAT IT IS MEANT TO DO
Three jobs, one clear promise.
These are the product outcomes the repository is organized to deliver.
Make the question testable
The planner extracts assets, funding, timing, history, and dividend treatment. It asks only for details that are still missing.
Keep the comparison fair
Every scenario uses the same contributed capital and shared market sessions, even when the purchase schedules differ.
Show where the result came from
Portfolio value sits beside an always visible contribution baseline, session controls, assumptions, and a complete metric ledger.
PRODUCT FLOW
How the idea becomes useful.
A short path from the user’s starting point to a useful result.
- 01
Describe an idea
Start with a question such as weekly versus monthly investing or a simple buy rule.
- 02
Resolve only the gaps
Controlled follow up choices complete the date range, funding, timing, or dividend assumptions.
- 03
Run comparable scenarios
The simulation schedules purchases on real market sessions and applies dividends, splits, fees, and cash consistently.
- 04
Inspect the difference
The graph, contribution baselines, timeline, and ledger expose what the market added beyond the money invested.
ENGINEERING IDEA
The choices that define the product.
Architecture matters here because each constraint changes what a user can safely believe or do.
Deterministic facts first
Code owns extracted values, supported options, schedules, and results. A local model can improve clarification copy, but it cannot invent fields or change the math.
Real trading calendars
Weekend and holiday purchases move to an available market session instead of being silently discarded.
Educational by construction
There is no brokerage connection, trade execution, account data, or claim that historical results predict future returns.
REPOSITORY PROOF
Evidence, not feature theatre.
Each point below comes from the current repository structure, code, or documented reference data.
Supported assets
Broad funds and selected company stocks use checked in historical data.
Comparable scenarios
Each scenario shares the same money assumptions and available history.
Intraday time slots
Hourly comparisons use explicit regular market session openings.
HONEST BOUNDARIES
What this product is not.
- Fin Lab is an educational historical simulator, not investment advice.
- It does not connect to a brokerage, place trades, or use private financial data.
- Results are limited by the checked in market history and the assumptions chosen for the comparison.