First thing to think about is to have a better understanding of what kind of ico you are in. Make sure to check all the details and if their project could have great value in the future. The decision whether to exchange it or to hold depends on what you find out in your research. So if the project is good and may have good future, then you can hold it till the value is high enough for you. But if the project is doubtful to be good in the future, then maybe you can exchange it.