Decoded Intelligence Signal
Look-Ahead Bias
advanced
risk
Verified: May 27, 2026Lexicon Core Definition
A backtesting error where the strategy uses information that would not have been available at trade time — most commonly from computing indicators on the full dataset rather than rolling forward candle by candle; produces artificially inflated backtested results that disappear in live trading.
Analysis Breakdown
A backtesting error where the strategy uses information that would not have been available at trade time — most commonly from computing indicators on the full dataset rather than rolling forward candle by candle; produces artificially inflated backtested results that disappear in live trading. Full explanation coming soon when Journey 21 content is ingested.