There are three types of investment styles, namely conservative, moderate and aggressive. All these are just a reflection of the amount of risk you are willing to undertake.
Now it stands to reason that if you have a low tolerance for risk then you are a conservative or moderate investor. This also ties in with your financial position and how much you are actually willing to invest. A person who loves taking risks is an aggressive investor and probably makes huge investments in companies.
This also directly depends on the ends you are trying to reach. That is if you are planning on buying a home in the next year or so, taking an aggressive investment approach is probably a good idea. On the other hand, if you are working and want to gather sufficient funds for a retirement plan then a moderate investment is better.
Conservative investors are safe. They like to be refunded for exactly what they invest. In other words, if they invest $5000 they would like to make back those $5000 including any profit over and above that. Such investors usually invest in common stocks and bonds and short term money market accounts.
Now a moderate investor takes it to the next level. Like a conservative investor he/she will want to make back the money they invest, but will also use a proportion of those earning to take further risks in higher investments. So the common rule is moderate investors keep 50% of the returns and re-invest the other 50% in other riskier stocks.
As the name suggests, an aggressive investor is someone who likes to play it rough. They have almost all or most of their returns invested in the stock market. They take risks where people generally would not. That means investing large amounts of money to main substantial gains either over a long term or short term.
So the type of investing you do really depends on what your financial position is what goals you have set for yourself. Like with anything else, never invest blindly. Always make a calculated prediction and then proceed.