How is risk related to profit?

They are closely related, especially in the equity market.
No risk, no profit. It has been seen as a general rule. The greater the risk is, the bigger the profit will be.Take the equity market for an example: Government bonds are usually referred to as risk-free bonds which only produce meager proceeds.Hedge funds are regarded very risky, but their return are correspondingly huge.

it is said that profit is the shadow of risk. The profit is always as long as it. So never give up the chance!