> backtester --signals --pricing --login --start

engine online — synthetic feed, 31 instruments

Write the signal.Test a decade.Trade it live.

A research environment for one quant: you. Nine signals, a custom Python hook, honest slippage, and a live paper book — no Bloomberg terminal, no Quantopian shutdown grief.

0
built-in signals
0yr
of daily bars
0
instruments + SPY
1.0

Write the signal

Nine built-ins — SMA cross, momentum, RSI, MACD, breakout, z-score, Bollinger, pairs spread, ML hook — or write your own in Python against the close matrix. Every parameter is a slider.

2.0

Backtest it honestly

Daily event loop, FIFO trade pairing, and a three-part slippage model: per-share, basis points, square-root market impact. SPY rides along as the benchmark on every run.

3.0

Paper trade it live

Point the same version at the live feed. Positions, fills, and P&L stream over a WebSocket into the dashboard — watch the strategy breathe before any real money does.

Every run returns the numbers that matter.

sharpe · sortino
annualized, 252-day convention, downside deviation for Sortino
max drawdown
peak-to-trough, plus every underwater period charted
cagr · volatility
geometric growth and annualized σ, vs SPY on the same axis
win rate · holding period
FIFO-paired trades with per-trade P&L in the log
slippage breakdown
fixed + basis-point + √impact components, itemized
alpha · beta
OLS against the benchmark return series
rolling sharpe
63-day window, charted across the whole test

Three families, one contract.

A signal is a function from prices to conviction. Everything downstream — sizing, rebalancing, costs — is shared, so families compare on equal footing.

momentum

  • SMA crossover
  • Price momentum (skip-month)
  • RSI regime
  • MACD histogram
  • Channel breakout

mean reversion

  • Z-score reversion
  • Bollinger fade
  • Pairs spread vs correlated peer

ml-based

  • Hosted inference endpoint
  • Local sklearn / XGBoost pickle
  • Standard feature block: momentum, z-score, realized vol

Free tier ships with two strategies and two years of history. Enough to find out.

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