Who is the closest person to a trillion dollars?

Who is the individual or organization that has come the closest to accumulating a trillion dollars in wealth or assets? This is a remarkable milestone that few have even come close to achieving. Could it be a tech giant like Apple or Amazon, or perhaps a wealthy individual like Jeff Bezos or Elon Musk? Alternatively, could it be a nation state or a sovereign wealth fund? It's an intriguing question that begs for a closer examination of the world's financial elite and their vast holdings.