For professionals · Traders & Quants
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Decidi for traders & quants
Find what kills the trade before the market finds it.
Stress-test your work free 1,500 free credits · no sign-up, no card
Have the thesis, the risk and the data examined by independent models — so the position you take is one whose failure mode you already understand.
Why traders & quants use it
- Build the disconfirming case: the strongest argument the trade is wrong, argued by someone short it.
- Pressure-test the strategy for overfitting, regime change and the backtest that won’t survive live markets.
- Surface the tail risk and the liquidity trap that the Sharpe ratio quietly ignores.
- Stress-test the data and the assumptions so a confident model can’t bless a flawed signal.
- Run the position-sizing and the drawdown scenario before, not after, the bad week.
- Get a skeptic to challenge the edge — is it real, or is it crowded and already gone?
Stress-test before you ship
- The thesis — the strongest case it’s wrong
- Overfitting, regime change and backtest fragility
- Tail risk, drawdown and liquidity
- Data quality and the assumptions in the signal
- Position sizing and the bad-week scenario
- The edge — real, or crowded and gone?
Your council
Adversarial passes we run
Disconfirming-case buildOverfitting & regime testTail-risk & drawdown runData & signal auditEdge-reality check
Stress-test your work now
1,500 free credits · no sign-up, no card