It is common to trade it immediately for money as it was what makes a bounty hunter happy after a hard work and or because each bounty hunting is a livelihood to make. On the other side it would be helpful to the ICO project to hold it a bit so that they may have more time to adjust to changes should bounty hunters sell their coins. So if you want to help them hold it but if you want more money you may wait for prices to go up. Just remember everything is a gamble you may never know when prices will be up. It could be next day, week or maybe next years to come.