Reflexivity
Why do market prices sometimes seem to influence the very reality they are supposed to reflect?
There are times when price movements appear to follow underlying conditions, and others when they seem to shape them. A rising market can improve sentiment, attract capital, and reinforce the very trend that caused it. A falling market can do the opposite, weakening confidence and prompting further decline. The relationship between perception and reality begins to blur.
This is where reflexivity offers a useful lens. It describes the idea that in financial markets, participants are not simply observing an objective reality. Their beliefs and actions can influence outcomes, which in turn shape future beliefs. The process is not one-directional. It is circular.
The concept was developed by George Soros, who argued that markets are driven not just by fundamentals, but by the interaction between perception and those fundamentals. In his view, participants form biased interpretations of reality, act on those interpretations, and through their actions, influence the very conditions they are trying to understand.
One of the central insights of reflexivity is that feedback loops can form. When perceptions and outcomes reinforce each other, trends can accelerate. A rising price can attract attention, increase participation, and validate the original belief. Over time, this can move markets away from underlying fundamentals. The same process can work in reverse during periods of decline.
In markets, this can be seen in the development of bubbles and corrections. Early changes in price influence expectations. Those expectations drive further behaviour. At some point, the relationship between perception and reality becomes unstable, and the feedback loop begins to unwind.
What makes this difficult to recognise is how natural it feels. Interpreting price movements as signals is a common and often useful approach. The challenge is that when those signals begin to influence behaviour at scale, they can alter the conditions they are meant to represent.
You may notice this in yourself when rising prices begin to feel like confirmation of a view, or when falling prices cause that view to be reassessed. There can also be a tendency to treat price as information, without recognising that it may partly reflect the behaviour of others acting on similar interpretations.
Reflexivity does not separate perception from reality.
But it does show how closely they are linked.