Choosing companies from different sectors is known to be very useful share market tip as it helps you to maintain the profit/loss balance. The reason behind this is that, for example, suppose that you have invested in an IT sector company as well as in the pharmaceutical company. Now, due to market volatility, if an IT sector is showing fluctuations or is on the down side, the loss that will cause to your investment in the IT sector company due to this fluctuations can be recovered back through your investment in the pharmaceutical company which might be on the up side at that point of time and thereby avoiding your potential loss. The other way to grow your profit is by investing in new entrant companies in the share market that you think can grow. In this way, you can get a certain command over market and earn a significant profit through that.