Given your other comment, when you say "ongoing," what you mean is some of the assets they purchased remain on the Fed's books. If they don't continue buying, t

Given your other comment, when you say "ongoing," what you mean is some of the assets they purchased remain on the Fed's books. If they don't continue buying, the fact that they still hold some of it doesn't have any further impact on rates on debt being offered in the future. They're doing more selling than buying at this point, which drives rates up. You don't need to dump everything at once to change the direction of movement. Think of like the strategic oil reserves. Selling any of it drives prices down. You don't need to sell literally all of it.