After accruing a large amount of profit, you will get the chance to unlock the Angel Investors. They will increase your profits greatly and give you access to more upgrades. However, you will have to sell all your businesses and start again. However, this is necessary if you want to make even more money. When given the opportunity, sell your shares and get as many Angel Investors as possible. Angel Investors can only be received by resetting the game (starting at zero again, with all upgrades reset). You get Angel Investors based on your total earnings. The more earnings you received, the more Angel Investors you will get. They have three main uses. Each of them will increase all profits by 2%. Profits can be spent on Angel Upgrades at the "Upgrades" menu, where you trade Angels for different boosts. You can also spend Angle Investors for Managers who usually make your businesses a lot cheaper and leveling upgrades cheaper. When you reset, you will not lose Angel Investors that you have not spent, even though you will lose the upgrades and managers purchased with them. It is worth resetting as soon as possible then gaining the first batch of Angel Investors. Then waiting some time before getting your second batch. From then on, your progress will be must faster, allowing you to accumulate Angel Investors. Always try to have at least a few hundred working up your profits.