Admitting "ignorance" is the true starting point of investing.

Ask AI · How Does Ray Dalio’s Investment Principles Address Market Uncertainty?

Today’s Market Overview

On March 30, China’s A-share market dipped and rebounded, with closing performance mixed. As of the close, the Shanghai Composite Index edged up 0.24%, the Shenzhen Component Index fell 0.25%, and the ChiNext Index fell 0.68%. Total market trading value expanded to 1.93 trillion yuan, up by nearly 70 billion yuan from the previous day. This shows that, against the backdrop of continued external disruptions, competition among funds is intense and portfolio-rebalancing moves are clear.

On the trading floor, among Shenwan first-level industries, non-ferrous metals led the gains with a 1.84% rise, followed closely by building materials, communications, and defense and military industry. The non-ferrous metals sector surged across the board: aluminum stocks sparked a wave of daily limit-ups. Multiple stocks hit the limit-up, including Liyuan Shares, Minfa Aluminum, and Yiqiu Resources, while Chifeng Gold rose nearly 8%. The communications sector was active as well, with Yangtze Optical Fibre driving a 5-day streak of 3 consecutive limit-ups and setting a new all-time high again. The concept of high-speed-rail track and related intersections saw unusual movement in the afternoon; Shenzhou High-Speed Railway hit the daily limit-up, and news that the total investment in the high-speed railway along the Yangtze River exceeds 500 billion yuan ignited sector momentum.

In contrast, power stocks were hit hard, with multiple stocks including Jinjun Power and Huadian Liaoning Energy all hitting the daily limit-down. The photovoltaic industry chain also weakened in sync, with Mavis Shares (Miaowei Shares) falling by more than 15%. Clear evidence shows that funds switched from higher levels to lower ones.

“Ignorance” in Investing and How to Respond

Ray Dalio once said: “Relative to what we need to know, what we really know is not very much. No matter how much success I achieved in my lifetime, the main reason was not that I knew how many things to do, but that I knew what I should do in situations of ignorance.”

This quote has sparked countless resonances in the investment community, but it is also often misunderstood. Some people take it as a declaration of “giving up predictions,” believing that since the future can’t be known, it’s better to just go along with the flow. Others interpret it as “agnosticism,” thinking that all analysis is futile. Both interpretations deviate from Dalio’s original intent. What he truly wants to say is: admitting ignorance is not giving up thinking; it’s thinking in a different way—thinking about how to make rational decisions when information is incomplete.

In investing, everyone faces this kind of dilemma every day. You research a company, analyze its financial reports, industry position, and management capability, and then conclude: it’s undervalued, and it will rise in the future. That conclusion itself is a prediction. The problem is: how reliable is that prediction? Is the information it’s based on complete? Will factors you can’t obtain or can’t understand overturn the existing judgment tomorrow?

True wisdom isn’t about how accurate your predictions are, but about what you’ve prepared in advance when you realize you might be wrong. This is exactly what Dalio means by “what you should do when you’re ignorant.”

The dividing line between mature investors and ordinary investors often isn’t about who can get closer to the mark, but about how they treat being “right.” The former treats their predictions as assumptions that need to be tested and verified; the latter treats their predictions as facts waiting for the market to confirm. When the market’s direction doesn’t match the prediction, the former asks, “What did I miss?” The latter asks, “How did the market get it wrong again?” These mindset differences determine the quality of responses when facing uncertainty.

So, how exactly should you respond? Four principles are worth borrowing.

First, set clear boundaries for your predictions. Any investment judgment should clearly define the conditions under which it holds—what circumstances make it valid, and what circumstances make it fail. For example, if you buy a stock based on the assumption that “raw material prices stabilize,” then when raw material prices suddenly spike, you should reassess the investment. Writing down the conditions for your prediction isn’t meant to prove you’re right, but to correct yourself promptly when conditions change.

Second, accommodate uncertainty through position sizing. Since you know your judgment might be wrong, you shouldn’t bet your entire fortune on it. The size of your position is essentially an expression of how confident you are in your judgment, but more importantly, it’s an acknowledgment of the fact that your judgment could be wrong. A moderate position size allows you to gain substantial returns when your judgment is correct, while still keeping the chance to start over when your judgment is wrong. It’s like walking on a bridge while holding the handrail—not necessarily required, but its existence helps you walk more calmly.

Third, adhere to your circle of competence and focus on what’s certain. After being in the market for a long time, you’ll find that many people aren’t lacking the ability to spot good companies—they lack the resolve to hold good companies. Where does that resolve come from? It depends on how certain you are about a particular judgment.

Imagine this scenario: after buying a stock, the share price drops by 30%. Questions flood your mind—does the original judgment still hold? Did you ignore some risks? If the investment logic itself isn’t clear enough or concise enough, these doubts quickly converge into the conclusion of “sell it.” On the other hand, if before buying you have already digested all the complexity and finally distilled it into a highly concise core judgment that can stand up to scrutiny, then when the stock price falls, you only need to ask yourself one most fundamental question: does that core judgment still hold? If the answer is yes, then the market’s frantic pricing becomes the opportunity to add to your position.

This kind of extreme conciseness isn’t laziness—it’s the result of deep thinking and high-level refinement. In the early stage, you do a lot of research work—understand the industry landscape, map out competitive barriers, and assess the management team. This complex analysis is indispensable, but the real skill is whether, after you’ve done all those “additions,” you can do a clean “subtraction” and compress all your understanding into a statement you can test. When your investment logic becomes that clear, patience is no longer something you have to deliberately maintain.

Fourth, build a correction mechanism instead of being obsessed with being correct. After buying a stock, many investors unconsciously fall into “confirmation bias”—they focus only on information that supports their judgment, while turning a blind eye to evidence that goes against it. The best way to overcome this psychological bias is to set the conditions for a “stop-loss” or “review” at the time you buy. This isn’t to predict the maximum downside of the stock price; it’s to give yourself a chance to calmly reassess. When the conditions are triggered, what you need to do isn’t mechanically sell—but pause and ask yourself: is the reason you bought still valid? Has your current judgment been affected by emotions?

In the end, investing is a game of long-term coexistence with uncertainty. No one can control all variables, and no one can continuously and accurately forecast the future. But precisely because you know your ignorance, you should be more inclined to build a system to deal with the unknown—this system isn’t designed to eliminate risk; it’s designed to protect yourself when risk occurs and to seize opportunities when they arrive.

Dalio’s wisdom isn’t about how many times he gets it right; it’s about that even when he gets it wrong, he can still exit with his whole self intact. This is the most worth learning capability in investing.

An Investment Message

Investing is a journey that travels alongside time. Short-term ups and downs are like splashes on the surface of the ocean, and they will ultimately be smoothed out by the tides. Real value is hidden in the day-to-day operations of a business, hidden in the years of compounding. Choose the right direction, stay patient, and be friends with time.

Note: The market has risks; investment requires caution. This article is compiled based on publicly available information and does not constitute any investment advice.