skewlab.io
FOR TRADERS

Automated trading strategies,
tested for real.

Build the edge you're after. Validate it in the worst historical conditions. Then deploy.

34BHISTORICAL CANDLES
From zero in a few clicks
No programming, no endless spreadsheets
34 billion candles
Stocks, ETFs, crypto, bonds, FX, indices, futures
Bars beyond time
Time, dollar, volume bars — try different scales
Rigorous stress tests
Robustness, Monte Carlo, walk-forward over 20 years
AI suggestions
Reports on overfit, fragility, improvements
Paper forward testCOMING SOON
Live strategy on our servers, virtual capital

No code

You build your strategy with an intuitive wizard, without writing a single line of code. You test it on 34 billion candles, refine it and retest until you've validated it — or ruled it out.

No Excel

No spreadsheets to wrangle. Data, backtests, metrics and reports all live inside the platform — already computed, charted and ready to read. No CSV exports, no fragile formulas, no broken cells to chase.

Low learning curve

A gentle learning curve: the interface guides you step by step, with sensible defaults and plain-language explanations at every turn. You're up and running in minutes, not weeks — no quant or finance degree required.

01Trading Strategies

Bar structure
Time
Dollar
Volume
Indicators
25 (SMA, EMA, RSI, MACD, ADX, Supertrend, Donchian, VWAP, MFI, Hurst…)
Signals
entry/exit long + short, AND/OR/NOT logic, 7 comparators, crossover
Exits
stop loss (%/ATR/absolute), take-profit (%/R-multiple/ATR), trailing, time stop, conditional exit, signal reverse
Sizing
fixed fraction, fixed notional, volatility target, equal weight
Confirmations
confirm over N bars, cooldown
Regime filters
ADX, realized volatility
25 technical indicators, grouped by category
Momentum
  • RSIRelative Strength Index
  • MACDMoving Average Convergence Divergence
  • STOCHStochastic Oscillator
  • ROCRate of Change
  • CCICommodity Channel Index
  • WILLRWilliams %R
Trend
  • SMASimple Moving Average
  • EMAExponential Moving Average
  • WMAWeighted Moving Average
  • ADXAverage Directional Index
  • AROONAroon
  • PSARParabolic SAR
  • SUPERTRENDSupertrend
Volatility
  • ATRAverage True Range
  • BBANDSBollinger Bands
  • KELTNERKeltner Channels
  • DONCHIANDonchian Channels
  • ZSCORERolling Z-Score
  • HURSTHurst Exponent
Volume
  • OBVOn-Balance Volume
  • VWAPVolume Weighted Average Price
  • MFIMoney Flow Index
  • CMFChaikin Money Flow
  • ADAccumulation / Distribution
  • FORCE_INDEXForce Index

02Screening & selection

Find the candidates before testing them: a single screening engine for all asset classes, on fundamental and technical criteria.

Multi-asset screening
a single interface for 7 asset classes
Fundamental criteria
data from SEC EDGAR (US) and EODHD screener (Europe)
Technical criteria
filters on indicators and signals
Ranking
sort and select the top by criterion

03Data universe

One engine, eight asset classes. Daily data on everything, intraday where it counts. Survivorship-free archive even on delisted securities.

US Stocks
price + total return · 5m → 1d · ~10 years
US ETFs
5,000+ · 5m → 1d · ~10 years
European Stocks
Milan, Xetra, Euronext, London, Madrid, Switzerland · 1d · back to the '90s
Delisted US Stocks
survivorship-free · 1h → 1d · since 2001
Crypto spot
major pairs · 1m → 1d · ~10 years
Currencies (FX)
79 pairs · 1m → 1d · ~10 years
Indices
131 · 1m → 1d · ~10 years
Futures
~131 continuous, with Open Interest · 1m → 1d · ~10 years
Bonds
119 ISINs, synthetic price, reinvested coupons · on-demand · from rate curve
Bond ETFs
fixed income ETF universe · 5m → 1d · ~10 years

04Analysis & metrics

Everything you need to understand return, risk and where performance comes from.

Return
total return, CAGR, final equity, monthly and annual matrix
Risk
annualized volatility, Sharpe, Sortino, Calmar, Martin
Tail
VaR 95%, CVaR 95%, downside deviation, Ulcer, skew, kurtosis, distribution
Drawdown
maximum, duration, top-N episodes with recovery times
Rolling
volatility, Sharpe and correlation over a moving window
Correlation
Pearson matrix, average correlation, diversification benefit
Contribution
by component, by asset class, by sector, trade statistics
Benchmark
alpha (t-stat, p-value), beta, tracking error, information ratio, up/down capture

05Stress test & Monte Carlo

Relive real crises and project the future, instead of trusting a single historical scenario.

Historical stress tests
4 crisis windows: dotcom, Lehman, EU sovereign debt, Covid
Monte Carlo (trades)
trade bootstrap, percentiles, worst-drawdown probability
Monte Carlo (forward)
10-year projection, percentile fan, loss probability
Temporal robustness
performance over K segments at fixed parameters
Rebalancing premium
counterfactual comparison: rebalance vs buy-and-hold
Asset allocation
weight aggregation by asset class and sector

06AI analysis

A second pair of eyes on your backtest, in natural language.

Risk insight
reading of the portfolio's risk profile
Holistic analysis
summary, quality score, strengths and weaknesses, recommendations
Strategy review
analysis of a strategy with anti-overfitting caveats
AI POWERED

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