If you have the option that it would not reach that value by December and you wanted to place a bet, then that would be the best option, because I highly doubt that the president of El Salvador will buy $300 million worth of bitcoin by December and I also highly doubt that the price will be able to rise so much that the $700 million will pass $1 billion. That's why my betting option would be that it will not be able to reach $1 billion by December. I don't know if that option exists and what the odds will be at the moment for that option.