Plain english → auditable backtest

Your edge, articulated.

Describe a trading idea the way you would say it out loud. StormLedge asks the right questions, writes the code — Python and its own DSL — runs the backtest, and tells you honestly whether the edge is real.

Say it like a trader would

It reads strategies like these.

MomentumRSI oversold + golden cross on SPY, 5% stop, daily bars.
Trend followingMACD crossover above the 100-day EMA on QQQ, ATR trailing stop.
Mean reversionBollinger Band touch with a volume spike on AAPL, 3-day hold.
Volatility breakoutBuy SPY when VIX spikes above 25 and price holds the 200-day MA.

One conversation, start to finish

How it gets from idea to ledger.

001

Describe

Give it the ticker, the entry signal, the exit, the stop. Plain English — no syntax to learn.

002

Watch it think

A visible plan, then code written live in the StormLedge Computer — Python and DSL, side by side.

003

Backtest

Bars replay in real time against your rules. Trades mark themselves on the chart as they fire.

004

Read the ledger

Sharpe, drawdown, walk-forward — and an honest statistical verdict on whether there's an edge at all.

storm ledger

What the ledger holds

Every claim, checked twice.

pythondsl

Dual code output

Every strategy compiles to a full Python execution engine and the StormLedge DSL — read, edit, download, or re-run either one.

1.84
Sharpe ratio
+6.2 vs S&P
benchmarked

Benchmarked results

Total return, CAGR, Sharpe, max drawdown, win rate, profit factor — every number measured against the S&P 500, not left to stand alone.

edge confirmed95% CI

Edge analysis

A composite score across P&L quality, consistency, robustness, and discipline, plus a statistical-significance verdict — so "it worked" has to earn the word.

Walk-forward testing

Run out-of-sample windows on demand and see whether the edge survives data it never trained on.

> fill: next-bar open
> commission: 5 bps
> data: research-grade

Nothing hidden in the number

Every backtest ships its own audit trail — fill model, costs, data source, engine version, code hash.

paper · $0 at risk

Paper deploy

Watch a strategy trade against live prices with simulated fills and a full log. Zero capital at risk.

Bring the storm. Leave with a ledger.

Start articulating your edge