QuanterLab

QuanterLab tests trading and investing ideas on real market history, right in the chat. Describe a rule in plain words, such as "hold Tesla while it is above its 200-day average, cash when below", and QuanterLab runs it on your account and shows the result in a card: the rule against simply holding the same stock or fund, a chart, and the next steps as buttons. The card fills in by itself while the test runs.

Every test guards against overfitting: a rule's settings are tuned on past years only and judged on the years after, which they never saw. Tests on S&P 500 stocks use the companies that were in the index on each date, over 20 years of daily data.

Five ready tests run with one tap on any US stock or fund: mean reversion, trend following, momentum, buying the dip and the 200-day line. Each is drawn as a circuit that lights up card by card as it runs. You can also run walk-forwards, scans for mean-reverting stocks and pairs, fitted models (OU and Kalman), market-state analyses, the strategies you built on the QuanterLab canvas, and the circuits of QuanterLab's published studies. Every result opens in the QuanterLab lab, where you can change any card and run it again.

QuanterLab places no orders, connects to no broker and moves no money. Tests are simulations on past daily data; results come back as summaries and rounded figures, and raw prices stay on the platform. Nothing it returns is investment advice.