When choosing a bull fund, investors can start from the following aspects: the past performance of the fund. It is very necessary for investors to know the past performance of the fund, just like observing the exam results to judge the Excellence of a student. The past performance of the fund shows the profitability of the fund to a certain extent. Although the test score is not the best indicator, it is the most real and available indicator, and so is the fund. It should be noted that the past performance of the fund should be compared with the same type of fund, otherwise the comparison between "apples and pears" is meaningless. For example, stock funds should be compared with stock funds, but money market funds should not be compared with stock funds. At the same time, it should be noted that we should not only compare the income of the fund, but also pay attention to how much risk the fund bears while making money for us. If there are two funds with similar returns, then we will generally choose the fund with relatively small fluctuations and little risk. The fund's position structure is essentially a financial service provided by the fund company to investors, but this service is expressed in the form of portfolio, because the fund also wants to buy stocks and bonds. Then, through the investment portfolio of the fund, we can see many characteristics of the investment style of the fund. For example, through some statistical methods, it can be distinguished whether a fund holds large-cap value stocks or prefers small-cap growth stocks. From the change of portfolio, we can see that the characteristics of the fund in daily operation, such as position weight, shareholding concentration and asset turnover rate, can reflect the investment style of the fund. Of course, the more direct method is to list the top ten awkward stocks of the fund and judge them one by one, and judge the recent performance of the fund from the potential of these stocks. When choosing a fund, a fund manager should not only know the historical benefits and risks of the fund, but also know who manages the fund, that is, the role of the fund manager in managing the portfolio can not be ignored. Fund managers hold the investment power, decide the variety and time of trading, and play a decisive role in performance. His own investment ideas and ideas have a far-reaching impact on the operation of the fund. How should investors pay attention to such a key figure? We think we can start from several aspects. We can start with the performance of fund managers in the past. This is relatively easy to get data, which can reflect their overall strength and investment style. The more these data, the longer the span, the more telling the problem. Secondly, look at the experience of fund managers. If the fund manager has done in-depth fundamental research and experienced the bull-bear transition in the post-investment market, such experience is beneficial to the fund manager to manage the fund. Finally, we should care about the professional ethics of fund managers. Why should we pay attention to this? Because investors actually buy the investment services of fund managers, who are entrusted by us to help us manage our finances. Trust is the most important thing in this relationship. If you can't trust the fund manager, how can you trust him? Therefore, investors should be concerned about whether the fund managers they rely on have been punished by the regulatory authorities and so on. Fund company funds are inevitably in the environment of fund companies, and fund managers will be more or less influenced by the management of the company in their management ideas and methods, so fund companies are also one of the objects to be considered when choosing funds. We mainly pay attention to the following aspects of fund companies, the overall strength of the company and whether its funds generally perform well. In addition to the level of investment management, it also depends on the company's investor service level, whether it is customer-centered and whether it creates as much convenience as possible for customers. In addition, whether the company's internal management is standardized and whether shareholders can provide support is also very important. After selecting a fund through the above aspects, it depends on whether the fund is suitable for you, and whether the investment objectives, investment targets and risk levels of the fund are consistent with your own goals. In fund investment, there is no best, only the most suitable, investors need to keep in mind. In addition, buying a fund does not mean that you can sit back and relax. We still need regular attention, but not very often. It is enough to combine the quarterly report of the fund every quarter, and comprehensively analyze the performance of the fund before deciding whether to operate the fund. 3.2 The best time to buy a fund As far as funds are concerned, the earlier investors buy a fund, the greater the income they may get in the future and the better the investment effect. If investors have decided to buy a fund, but don't know when to start, then generally speaking, after optimistic about a fund, it is the best time to intervene at a low point. But this ideal situation is difficult to achieve, just as the Wall Street proverb says: buying stocks at the lowest level of the market is like catching a flying knife falling from the sky. Even professionals who have worked for many years avoid talking about topics such as forecasting the market, not to mention ordinary investors relying on their own judgment to make decisions. In terms of timing, what we have to do is to judge the general direction. What is the general direction? Is this country's economy improving or deteriorating? Has the securities market just entered a bull market or has it already had a bear shadow? Generally speaking, most people's judgments are correct and relatively easy to judge. Then, as long as we think that the economy is improving and the bull market trend in the securities market has not changed, we must invest in funds first. The second is strategic response. Although the low point is difficult to judge, you can't completely passively close your eyes and buy. We can still adopt some strategies to reduce the cost of our investment as much as possible and spread some risks. For example, you can flexibly grasp the buying opportunity and buy in large quantities when the market is deeply adjusted. The so-called "big drop and big buy, small drop and small buy, no drop and no buy". Dividing one-time purchase into multiple purchases can not only avoid the excessive psychological pressure of market adjustment after one-time investment, but also actually reduce the risk. Another good method is to make regular fixed investment (referred to as fixed investment). Fixed investment is mandatory investment, and buying at this time is a must. The biggest advantage of this is that it can help us overcome the psychological weakness of not being afraid to buy when the market falls. It is these times that are often the best time to buy. ]