I just invested in two different ICO. Both of them were profitable for me. The first ico i invest was Electroneum ETN. After the wallets get opened, i had some fud. I sold my coins which i buyed in the ICO for 100$ for 800$. NOw i regret because i sld to early. My second ICO was HeroCoin. I also investet 100$. This coins im still holding. In the meantime it raised to over thousand dollars. But i dont sell. Because it has a low marcet cap and a low supply. So i learned from ym first mistakes and i will hold them. So i can say ICO are very profitable for me.