HODL investors are often investors who have a strong belief in bitcoins, they aren't distracted by the rumors of bitcoin prices, they are consistent with their opinions and that is what they create. Give them huge profits.
This is true in the market of cryptocurrencies and especially in bitcoin, this is something that is very difficult to understand because people that do not believe in what cryptocurrencies can achieve will never be able to hold her coins for as long as long term holders can, that is why many people prefer to become traders or short term investors that way when things go wrong they can sell their investment for a small loss.