Concept
Signal Inversion
Signal Inversion, also known as fading, is a Meta & Composition concept. The Library holds 3 implementations, each one a working definition you can pull into Quant.
Top Signal Inversion indicators
3 total
What is Signal Inversion?
Signal inversion takes a defined signal and trades its opposite: sell where the rule says buy, buy where it says sell. Done deliberately, this is fading. The inverted signal is treated as a marker of crowd behavior worth trading against, the classic case being breakout entries inverted into anti-breakout fades inside a trading range, where the fader treats the false breakout as the expected outcome rather than the exception.
The arithmetic deserves care. Inverting a strategy flips the sign of its gross returns, but costs do not invert: spread, fees, and slippage subtract from both versions. A system that loses about its trading costs therefore inverts into another system that loses about its trading costs. Inversion is most defensible when the original signal has demonstrably negative expectancy beyond costs in a specific regime, and least defensible as a reflex applied to any losing backtest.
How traders use it
- As a regime-conditioned fade: invert continuation signals only in confirmed range conditions and keep them in trends, so the inversion is gated by context rather than permanent.
- As the logic behind mean-reversion entries: fading overbought/oversold extremes is momentum logic inverted, which is why the same oscillator can serve trend-followers and faders depending on the regime assumed.
- As a research diagnostic: if a signal and its inverse both hover near zero after costs, the signal is likely noise; a signal with strongly negative expectancy is information, even though the tradeable edge after costs is smaller than the mirror image suggests.
Related concepts · Signal engineering
Concept family
Meta & Composition
28 concepts mapped · 23 in the Library
Signal Inversion FAQ
If a trading strategy loses money, will the inverse strategy be profitable?
Not necessarily. Inversion flips gross returns, but transaction costs are paid in both directions, so a strategy that mostly bleeds spread and fees inverts into another bleeder. The inverse is only attractive when the original loses distinctly more than its costs, consistently and for an identifiable reason. Check whether the loss survives out of sample before trusting the flip, and expect the inverted edge to be smaller than the mirror image implies.
What does fading a signal mean?
Fading means trading against a move or signal: shorting a breakout, buying a panic flush, selling into a momentum surge. Faders bet the initiating move will fail and retrace, which happens often in ranges and around exhaustion but fails badly when a real trend is starting. That asymmetry is why systematic fades are usually paired with a regime filter and hard stops rather than run unconditionally.
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