“There’s something very reductive about the stock market. You can be right for the wrong reasons or wrong for the right reasons, but to the market, you’re just plain right or wrong.”
John Allen Paulos
Are you comfortable with the concept of right and wrong? The price you analyze everyday is the truth. Price does not lie. The price is always right.
Taking price a step further we can see…
Markets are also the same because of price. All markets are most directly measured by their individual price movements. What do cotton, crude oil, Cisco, SUN, GE, US Dollar, Australian Dollar, soybeans, wheat, Microsoft, JDS Uniphase, EMC and Oracle all have in common? Let’s say you know nothing about trading cotton. Moreover, you also know nothing about fiber optic networking (a specialty of JDS Uniphase). Oracle and databases? Let’s say you are clueless about them as well. Does it matter that the fundamentals of cotton, JDSU and ORCL are all different? What if you just analyze their market prices?
Trend following does not require an understanding of the market fundamentals. Take the price data and apply your rules. If your trading is pure trend following, all markets are the same in terms of price analysis.
Why Price Is the Only Truth That Matters
Paulos’s observation that the market will call you right or wrong regardless of your reasoning is the most concise statement available of why process-based evaluation of trading decisions is difficult. You can have a perfectly sound analytical framework, apply it correctly to good data, and reach a conclusion that is logically defensible in every respect and still be wrong because the market moved in a different direction. You can make a poorly reasoned guess and be right. The market’s verdict is binary and final. The reasoning behind the trade is invisible to the market and irrelevant to the outcome.
This is not an argument against careful analysis. It is an argument for calibrating the type of analysis to what actually predicts outcomes. Fundamental analysis of cotton’s supply and demand is rich, detailed, and deeply informed. It tells you about acreage planted, weather patterns, export demand, textile industry trends, and global inventory levels. What it cannot tell you is where the price will be next month. The price already reflects everything the market knows about cotton’s fundamentals, as interpreted by thousands of professional and institutional participants with better information access than any individual analyst. The analysis is priced in.
Price, by contrast, tells you exactly what the market has decided all that information is worth. The price is the market’s answer to the question of what cotton is worth right now, incorporating every participant’s information and judgment in a single number. It cannot lie because it is not an opinion. It is the result of actual transactions between willing buyers and sellers at that price. No analysis produces a number that is more accurate about the current state of market opinion than the current price. It is the aggregate of all opinions, not one more opinion to be added to the pile.
The markets list in the page; cotton, crude oil, technology stocks, currencies, agricultural commodities, is the practical demonstration of price universality. A trader who knows nothing about fiber optic networking can trade JDSU by reading its price chart, because the price chart tells them everything the market knows about JDSU’s prospects. A trader who knows everything about Oracle’s database technology cannot predict Oracle’s stock price better than the price chart does, because the price chart already incorporates Oracle’s product suite, competitive position, earnings history, and every analyst’s opinion about its future. The fundamentals produce the price. The price reflects the fundamentals. Reading the price is reading the aggregate of all fundamental analysis ever performed on the security.
All markets being the same in terms of price analysis is the operational freedom that makes systematic trend following genuinely global. The same rules that work on soybeans work on the US Dollar work on crude oil work on Oracle shares. Not because those markets are economically similar but because they all express themselves through price, and the systematic rules respond to price regardless of what is producing the price movement.
Frequently Asked Questions
What does Paulos mean by “right for the wrong reasons and wrong for the right reasons”?
He means that the market’s verdict — the price movement that profits or losses a position — is independent of the reasoning behind the trade. A correct analytical conclusion that leads to a losing trade is still a losing trade. A flawed analysis that happens to align with price movement produces a profit. The market evaluates outcomes, not reasoning. This is not a reason to stop reasoning but a reason to evaluate reasoning by its long-run track record across many trades rather than by any individual outcome.
Why does price not lie?
Because price is the result of actual transactions between willing buyers and sellers. It is not an estimate, a forecast, or an opinion. It is the observable fact of what someone paid and what someone accepted for an asset at a specific moment. Every analysis is an opinion. Every fundamental model is an estimate. The price is the market’s answer to what the asset is currently worth, incorporating every participant’s information and judgment in a single verifiable number.
Why are all markets the same for trend following purposes?
Because all markets express their condition through price movement, and systematic trend following responds to price movement with defined rules regardless of what is causing the price to move. A breakout above the 20-week high is the same signal in cotton as in the US Dollar as in Oracle shares. The fundamentals that produced the breakout are completely different. The price behavior that the system responds to is structurally identical. The same rules apply everywhere price trends.
Trend Following Systems
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