ICO investment requires due diligence. Do some research to the team and think about the exploitation of the asset / technology.
Sometimes it can be very profitable (see eth). Sometimes a complete fiasco.
Tell me about it. I invested in the Polybius ICO, the coin immediately dropped 80% and has not recovered - that was a bad move on my part.
On the other hand I invested in the Binance ICO , it's now 500% up; now you may think WOW! that's a great deal, but the price dropped slightly after issuing and stayed low for a bit so I sold - yet another bad move.
But this has been offset by buying NEO when it was $6 and it's now over $46..it's a minefield out there !