What you think more profit, participate in IEO or wait after IEO and buy the token from exchanges?
To think about cryptocurrency during or after IEO always depends on the offer and price of the cryptocurrency itself. For example, if there is an opportunity to get a good% discount on IEO, then it is better to choose this offer or at least invest part of your funds allocated to this company, and only after you buy some of the cryptocurrency after it is listed.
It is also much important that we look at the potential of exchange that how the trade is going on that exchange. If the IEO is started on a high volume exchange then it is very beneficial to invest in that IEO because on high volume exchanges the value of the coin do not drop but gain more value with the time and give a good profit to the investors.