I am pretty sure that it was a typo as well but no one knew how it created a movement but HOLDING and HORDING when combined might have given rise to this funny word that does not exist in Oxford dictionary. I also got to know about the invention of this word few years ago, this was definitely interesting since now we are seeing loads of people using it. It's not just holding your coins, it's also collecting all that you can and making sure you don't give into the demands of the high price.