A trading model can become less reliable without its headline accuracy changing.
Imagine a signal is correct 58% of the time.
Six months later, it is still correct 58%.
Nothing appears broken.
But previously, correct signals produced an average +2.4% move while incorrect signals lost 1.1%.
Now winners average only +1.3%, while losers still cost roughly 1.1%.
The hit rate survived. The payoff deteriorated.
This is why monitoring only prediction accuracy can hide economic decay.
Track the magnitude of winners, magnitude of losers, post-signal movement, and net expectancy after execution costs.
For eligible new users, CODE2026 can reduce qualifying Binance Spot trading fees by 20%, lowering one measurable layer of transaction costs.
But the model still needs enough payoff asymmetry to justify taking risk.
A signal does not need to become less accurate to become less valuable.
Sometimes the warning is not fewer correct predictions.
It is the market paying you progressively less each time you are right.
Imagine a signal is correct 58% of the time.
Six months later, it is still correct 58%.
Nothing appears broken.
But previously, correct signals produced an average +2.4% move while incorrect signals lost 1.1%.
Now winners average only +1.3%, while losers still cost roughly 1.1%.
The hit rate survived. The payoff deteriorated.
This is why monitoring only prediction accuracy can hide economic decay.
Track the magnitude of winners, magnitude of losers, post-signal movement, and net expectancy after execution costs.
For eligible new users, CODE2026 can reduce qualifying Binance Spot trading fees by 20%, lowering one measurable layer of transaction costs.
But the model still needs enough payoff asymmetry to justify taking risk.
A signal does not need to become less accurate to become less valuable.
Sometimes the warning is not fewer correct predictions.
It is the market paying you progressively less each time you are right.