How to decide whether to cut losses or hold when your position is in a loss?

Ask AI · From internal and external factors, how to determine the nature of holding losses?

Market Review Today

On March 19th, the A-share market experienced intense divergence. By the close, the Shanghai Composite Index fell 1.39% to 4006.55 points, briefly dropping below the 4000-point mark during the day; the Shenzhen Component Index declined 2.02%, and the ChiNext Index dropped 1.11%. The combined trading volume expanded to 21.3 trillion yuan, an increase of about 70 billion yuan compared to the previous trading day, indicating growing bullish and bearish disagreements. Over 4,900 stocks declined, with a significant loss effect.

The market displayed a stark “ice and fire” duality. The upstream resource sectors of coal and oil & petrochemicals defied the trend and rose by 1.82% and 1.34%, respectively, while the non-ferrous metals sector plummeted 6.1%, leading the decline. Steel and chemical sectors also fell more than 3%. The driving logic stems from a fundamental shift in Middle East geopolitics: Qatar’s Ras Laffan Industrial City, the world’s largest liquefied natural gas export base, was attacked, causing physical damage to energy facilities, making supply reduction unavoidable, with Brent crude oil approaching $110.

Meanwhile, structural opportunities in the AI industry chain emerged. The CPO concept surged over 2% in the morning, photovoltaic inverter sectors rose 1.58%, and the implementation of the “computing and electricity synergy” policy opened new space for green electricity.

Investment Reflection: When Losses Occur, How to Distinguish Between Fundamental Change and Temporary Fluctuation

In an investment career, the most tormenting moment is when holdings incur losses, and the inner voice repeatedly questions: Is this a temporary misjudgment caused by market sentiment, or has my initial fundamental analysis become invalid? The answer to this question directly determines whether to cut losses and exit or to hold and wait. The ability to distinguish between the two often becomes the dividing line for long-term investment performance.

If the fundamentals have undergone a fundamental and significant change, and this change has a lasting effect rather than a temporary one, it indicates that the initial fundamental judgment is no longer correct. In this case, the initial loss is the best and smallest loss, and immediate stop-loss is necessary.

The core here is “fundamental” and “permanent”—whether the company’s moat has been eroded, whether industry demand logic has been overturned, or whether core competitive advantages have vanished. If so, continuing to hold is merely fighting against the trend, and accepting the loss could be infinitely magnified. Admitting mistakes requires courage, but even more so respect for the truth. Persisting in the wrong direction only distances you further from the correct exit.

However, if the fundamental change is non-essential and non-critical, and its impact is temporary or reversible, then the initial fundamental analysis remains valid. In this scenario, the best strategy is to do nothing, hold the position, and watch the market frenzy unfold, waiting for the trend to turn in your favor—shifting from unfavorable to favorable.

Market sentiment is like a pendulum, always swinging from one extreme to another, but ultimately value will revert. At this stage, investors need to fight not the market but their own fear and doubt. Most losses are not due to buying the wrong target but because, at the right time, they couldn’t withstand the volatility and sold the right target.

To distinguish these two situations, consider three dimensions:

First, examine whether the change is caused by internal or external factors. Internal factors refer to the company’s fundamentals, such as core product competitiveness, management capability, and business model sustainability; external factors include macro environment, policy guidance, and market sentiment.

If the loss stems from external disturbances and the company’s intrinsic quality remains unchanged, it is often temporary. For example, a high-quality company’s stock price declines with the overall market correction; as long as the company’s moat remains, such fluctuations are opportunities for contrarian positioning. But if the loss results from internal deterioration—such as core products being replaced by new technologies, significant loss of key customers, or serious management issues—this may indicate a fundamental change, requiring a reassessment of the holding logic.

Second, evaluate whether the impact is long-term or short-term. Some events, despite their large shock, have pulse-like effects that diminish over time. For example, geopolitical conflicts triggering risk aversion tend to subside after the event; short-term macro data fluctuations are also corrected in subsequent cycles. Conversely, some changes are irreversible, such as paradigm shifts in technology, demographic shifts, or permanent resource depletion.

Taking the current energy market as an example, physical damage to energy facilities requires years to repair, making this a long-term supply-side change that could lead to a revaluation of energy sector fundamentals.

Third, observe whether the price has deviated excessively from intrinsic value. If the company’s fundamentals are still solid but the valuation has fallen to historical lows due to market panic, this often signals a temporary fluctuation. Conversely, if the fundamentals have indeed weakened but the stock price has not fully reflected this change, the decline may just be beginning. As Graham said, the market is a voting machine in the short term and a weighing machine in the long term. Understanding this helps maintain calm during price drops and judge whether the market is wrong or you are.

Investors often make two mistakes: one is mistaking temporary fluctuations for fundamental change, selling out before dawn and missing subsequent gains multiple times; the other is mistaking fundamental change for temporary fluctuation, deepening losses on the path of value destruction, and shifting from short-term speculation to “long-term shareholder.”

Avoid these errors by having a deep understanding of your holdings—knowing what has changed, what hasn’t, what is important, and what is not.

True investment wisdom lies in distinguishing noise from signals, waves from tsunamis. In volatility, hold on to what should be held, and abandon what should be abandoned. This requires not only rational analysis but also emotional stability and independent thinking.

Investment Message

Investment is a journey of cognition. The market is a short-term emotional voting machine, but in the long run, it is a weighing machine. Genuine value investors hold as partners in the enterprise, judge with an industry observer’s perspective, stay steadfast amid volatility, and remain clear amid noise. Wealth is the realization of cognition; patience is the best compound interest.