Maybe but most likely not. I'm confident about this because I was watching the number of ICN accounts verse the number of ICO investors for a few weeks in the beginning. ICN ICO posted how many investors there were in the beginning, so you were able to 'roughly' gage how many people still had their ICN in the community wallet. If I had to guess there are still about 50-60% of the 3,000+ ICO participants who have not withdrawn to their own wallet, unless you want to sell of just play with the tokens its more convenient to leave them in the ICO wallet.

Now as for trigger happy and hitting their mark: absolutely but not just whales. When you invest in anything there comes a point in time in which your ROI 'caps' so you will want to liquidate and move into an investment that can achieve higher growth. This happens in real-estate all the time, you find a good deal on a fourplex and you ask 'why is this person selling it?' well its not that they aren't making a return on it or something is wrong with it, but rather for that person they can make more by selling it and investing their gains in a larger building. Same for anyone in crypto - If I have coin1, I may sell at $1 even though it can go to $2 in a few years. I do this because I can sell Coin1 and make 2x and then buy Coin2 and make 2x and Coin3, etc many times over before my original Coin1 reaches $2.