Speculators flock to buy bitcoin (BTC-USD) futures in anticipation that the U.S. Securities and Exchange Commission will approve four bitcoin (BTC-USD) exchange-traded funds over the next two weeks, the Wall Street Journal reports. Within that time, the SEC may either approve, reject or postpone the proposals of ProShares, Valkyrie Investment, Invesco, and VanEck submitted in August. Recently, the annualized premium on CME (NASDAQ:CME) bitcoin futures prices over bitcoin's (BTC-USD) spot value is 15% vs. the ~7.7% average over the first nine months of 2021, the WSJ notes. Speaking of the Chicago Mercantile Exchange (CME), the company recently said it plans to raise the cap on the number of BTC futures contracts that a single firm can hold; that could pave the way for a new big player like an ETF to enter, analysts told the WSJ. Thanks to rapid growth in usage and adoption of digital assets by institutional investors, "there