Factor

Factors turn market or financial data into a numeric signal that you can analyze, backtest, or use in a strategy.

Choose a factor mode

Formula mode

Use one complete expression per line. Formula mode supports nested operators and arithmetic expressions.

RANK(close / DELAY(close, 20) - 1)

Use lowercase names for fields and uppercase names for operators. Do not use assignments, imports, Python attributes, or FUTURE_RETURNS in a factor formula.

Python mode

Use Python when your factor needs logic that is not practical as one expression. Define one class that inherits from Factor and return a Series from calculate(self, factors).

class MomentumFactor(Factor):
    def calculate(self, factors):
        close = factors["close"]
        return close.groupby(level="symbol").transform(lambda s: s / s.shift(20) - 1)

Continue

Operator reference: Browse all supported formula operators.
Market compatibility: Check field and market restrictions.

FUTURE_RETURNS is listed in some legacy formula references, but TQX rejects it in factors because it uses future data.

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Choose a factor mode

Formula mode

Python mode

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​Choose a factor mode

​Formula mode

​Python mode

​Continue

Choose a factor mode

Formula mode

Python mode

Continue