Formally, it means "The Vulture" in German. One who is responsible for many aliases. One who is not too bright. One who is obnoxious and ignorant of many basic principles, especially in investing. One who thinks the world of himself and uses aliases to prop himself up in the eyes of others. One to be pitied.
Are you going to der Aasgeier's treehouse party this Saturday? All his friends will be there so there should be lots of room. He's ordering in a truckload of donuts.