<p><img src="https://images.cointelegraph.com/images/840_aHR0cHM6Ly9zMy5jb2ludGVsZWdyYXBoLmNvbS91cGxvYWRzLzIwMjQtMDQvMTYwYjg4ZTktNmQ3Mi00NzM2LWE3NDMtNGRkZjUyOWYwNTg4LmpwZw==.jpg"></p><p>BlackRock's IBIT ETF could soon flip Grayscale's GBTC, to become the largest ETF by Bitcoin holdings.</p>