Investment Bias refers to irrational or mistaken behaviors that investors may exhibit during the investment process. These behaviors can result in investors making unwise decisions that affect their investment outcomes. Here are five common investment biases:
Emotional bias refers to the influence of emotional factors on investors' decision-making, rather than objective market conditions. This may include emotions such as greed, fear, frustration, or excessive confidence. For example, when the market is rising, investors may become overly optimistic due to greed, leading to over-investment. On the contrary, when the market is falling, investors may become overly pessimistic due to fear, leading to excessive selling.
Confirmation bias refers to the tendency for people to seek and accept information that supports their existing beliefs, while ignoring or rejecting information that contradicts them. This may cause investors to only focus on information that confirms their preexisting investment views, while ignoring other information that may affect their investment decisions.
Overconfidence refers to investors being overly confident in their abilities and knowledge, often overestimating their abilities and underestimating risks. This may lead them to over-trade, make high-risk investments, or inappropriately concentrate their investments in certain assets, thereby increasing the risk of losses.
Loss Aversion: Loss aversion refers to the psychological reaction of people being more strongly affected by losses than by equivalent gains. This can lead to investors panicking and selling investments when facing losses, even if it may lead to greater losses. It can also result in investors being overly cautious and missing out on potential gains.

Dear~
Yesterday, I still feel like you are chasing after buying stocks at a high price, just like a novice investor like me 🥹
Last time's experience with 900 shares at 8150 was just like this. At that time, you also thought it would keep rising and then got stuck at the high point. Mentally, you couldn't hold on and wait for it to rise again, so you cut your losses. In the end, you lost at least 0.05, 0.6 million. I don't think you did anything wrong, I just want to say that this is the human nature when facing such a large amount of money. Even someone as rich as Warren Buffett admits his mistakes and cuts losses. What about retail investors? Sometimes, we are not able to control ourselves and fear influences our decision-making. At the same time, this mechanism is also to protect us. When we know the risk is too great, we need to avoid it so that most people won't lose everything in stocks
I also hope that the stocks you bought will keep rising, or you have seen something that I don't know. However, it may be better not to hold such high-risk positions over the weekend. Of course, I also agree that this stock will rise today. But please remember the experience we learned last time. It opened higher on Friday and then dropped in the afternoon, and the following Monday it plunged. It maintained a relatively low price for nearly two weeks. Yesterday, it rose again due to the US market's influence, and I think the trend will be like this. However, this time the high point may reach a new high. Whether it can sustain at the high point remains to be seen. I believe that semiconductors are currently a very hot topic worldwide, but the stock is mostly a result of speculative trading driven by human nature. It has already doubled in less than a month. If it's not speculation, then what is it? Wasn't semiconductors popular a month ago? Obviously, they were not. Short...