[Summary]
The reason why investors succumb to their emotions is a theme that can be used to organize investment decisions, but can also lead to hasty decisions if the assumptions are wrong.
When beginners look at why investors succumb to their emotions, it is more practical to check what to check before deciding to buy, rather than a detailed theory.
In actual investing, the starting point is to check prices, performance, fees, taxes, and financial plans separately, rather than relying solely on the reasons why investors succumb to emotions.
In this article, I will explain why investors succumb to their emotions, not as "knowledge" but as steps to check before buying or selling. Don't rush to conclusions, read according to your financial amount and time horizon.
First, we need to distinguish the reasons why investors give in to their emotions.
When looking at why investors succumb to their emotions, first determine what they want to judge. The information you need changes depending on whether you want to know the meaning, confirm before buying or selling, or review your current holdings.
Especially for beginners in investing, the easier the words are, the more they tend to take them as a conclusion. The reason why investors give in to their emotions is not the only factor in making decisions. If you want to check it, it is more realistic to look at it in conjunction with fund management, holding period, and opposing materials.
The order in which beginners look at why investors succumb to their emotions
If you want to look at why investors succumb to their emotions as a basic guide for beginners, first make your assumptions narrow. It is important not to mix up whether you are talking about the market as a whole, individual stocks, NISA or long-term funds.
If you check the following points, things will be much more organized.
| Axis to check | What we see as why investors give in to their emotions |
|---|---|
| purpose | What do you use to judge? |
| Time axis | Which is closer to short-term trading, long-term holding, or NISA? |
| basis | Which one is more important: price, business performance, interest rates, exchange rates, or psychology? |
| risk | When things go the other way, where should you look again? |
| action | Will it lead to buying, selling, or doing nothing? |
Points that can easily cause trouble in making decisions
Lack of knowledge isn't the only reason investors get stumbled by their emotions. In fact, there are situations where we interpret something conveniently because we know a little bit about it.
- Narrow down the indicators and conditions that investors look at first to three because they succumb to their emotions.
- Don't make a big purchase and leave things you don't understand.
- Think about living funds and investment funds separately.
- Check products and brands that you can understand
The important thing here is not to settle on one correct answer just because investors are overcome by emotion. In investment, the meaning of the same material changes depending on the market, holding period, and amount of funds. When in doubt, prioritize confirmation over conclusion.
Checklist before buying and selling
Before deciding why investors succumb to their emotions, check at least these five things.
- Can you explain in one sentence the purpose of looking at why investors succumb to their emotions?
- Have you confirmed one or more countermeasures or failure conditions?
- Are you investing your living funds or money that will be used soon?
- Have you decided in advance the criteria for cutting losses, taking profits, and continuing to hold stocks?
- Are you making judgments based only on social media or short headlines?
Checklists are simple, but they prevent you from adding reasons after making a decision. The purpose of identifying why investors succumb to their emotions is not to act faster, but to reduce unnecessary errors in judgment.
Summary
The reason why investors succumb to their emotions is a material for organizing investment decisions. Even if you read it as a basic guide for beginners, treating it as a stand-alone buy/sell signal will make your judgment difficult.
The points to keep in mind are as follows.
- Determine the purpose first to see why investors succumb to emotions
- Do not mix time axis and amount of funds
- Check not only good materials but also negative materials
- When using NISA and long-term funds, consider how to handle losses
- When in doubt, reduce your position or postpone it.
The more knowledge you have, the safer it seems, but in the market it can become dangerous if you use it incorrectly. The reason why investors succumb to their emotions is not a word that forces them to make a hasty decision, but rather a realistic way to treat it as a tool to pause before buying or selling.
Source/reference materials
- Financial Services Agency Investment Basics, Financial Services Agency Investment Basics
- Japan Exchange Group Fundamentals of Stock Investment, Japan Exchange Group Fundamentals of Stock Investment
- Confirmation date: 2026-05-30