Investing in ICO is a great way to make a profit. but investing in ICO is also risky. to avoid such risks. You should do some research on the ICO project that will follow before you invest in it. You can see their whitepapers, the project roadmap, their team members.
Some interesting projects are now more profitable to buy immediately after entering the stock exchange. It will be more profitable, because very often bounty hunters sell their reward below the ICO price. But if the situation on the market changes, everything can change quickly.