Quote of the day by George Soros: "A boom/bust process occurs only when market prices find a way to influence the so-called fundamentals that are supposed to be reflected in market prices."
George Soros observed that market prices influence economic fundamentals. Rising prices attract buyers and encourage business expansion, which alters underlying conditions. This self-reinforcing loop creates boom periods where optimism fuels fur...

“A boom/bust process occurs only when market prices find a way to influence the so-called fundamentals that are supposed to be reflected in market prices.”
At its core, Soros is challenging a foundational assumption in classical economics: that prices merely reflect underlying fundamentals like earnings, productivity, or growth. Instead, he argues that the relationship is two-way. Prices don’t just passively mirror reality, they actively shape it.
When Prices Start Changing Reality
In normal textbook models, fundamentals determine prices. For example, strong corporate earnings should lead to higher stock prices. But Soros highlights a feedback loop where rising prices themselves alter behavior:- Rising asset prices attract more buyers, increasing demand.
- Higher valuations encourage companies to borrow, invest, or expand aggressively.
- Credit becomes easier to access during booms, further fueling expansion.
- Eventually, this expansion changes the underlying “fundamentals” themselves, sometimes making them temporarily look stronger than they truly are.
This is what Soros calls reflexivity: a self-reinforcing loop where perception and reality continuously influence each other.
The Boom Phase: Self-Fulfilling Optimism
During booms, optimism feeds on itself. Investors believe prices are justified by strong fundamentals, but those “strong fundamentals” are often being shaped by the very price increases they are celebrating.For example:
- Rising real estate prices encourage construction booms.
- Rising stock markets make firms appear more creditworthy than they might be in a downturn.
- Easy financing conditions mask underlying risk.
The Bust Phase: When Feedback Reverses
The same mechanism works in reverse during downturns:- Falling prices reduce confidence.
- Credit tightens, forcing businesses to cut investment.
- Weakening activity damages fundamentals like earnings and employment.
- Those weaker fundamentals then justify even lower prices.
The cycle accelerates downward just as it did upward.
Why Soros’s Insight Matters Today
Soros’s quote remains relevant in modern markets, especially in environments shaped by:- High liquidity conditions,
- Rapid credit expansion,
- Tech or AI-driven speculative cycles,
- And algorithmic trading amplifying momentum.
It reminds investors that markets are not always stable mirrors of economic reality. Instead, they can become engines that actively reshape that reality—sometimes constructively, often dangerously.
Key Takeaway
The key lesson from Soros is not that markets are irrational, but that they are interactive systems. Prices influence behavior, and behavior reshapes fundamentals. Ignoring this loop can lead to underestimating both the speed and scale of financial cycles.Download ET Markets APP