<p><img src="https://images.cointelegraph.com/images/840_aHR0cHM6Ly9zMy5jb2ludGVsZWdyYXBoLmNvbS91cGxvYWRzLzIwMjQtMDUvMGJlMTYzNTItMTZjNC00MzIzLWI4NzUtMmJjYmZkNzk5MDJhLmpwZw==.jpg"></p><p> The total OI notional value for all outstanding BTC options contracts is $19 billion.</p>