Could these be the first bitcoin futures ETFs: the First Trust Bitcoin Strategy ETF, the First Trust Inverse Bitcoin Strategy ETF, the GraniteShares Bitcoin ETF, the GraniteShares Short Bitcoin ETF, the REX Bitcoin Strategy ETF and the REX Short Bitcoin Strategy ETF.

According to public records, The Chicago Board Options Exchange (Cboe) has filed with the U.S. Securities and Exchange Commission (SEC) to list these six bitcoin futures ETFs.

The records show the proposed rule changes were filed with the SEC between Dec. 15 and Dec. 19.

According to the First Trust filing, the fund “intends to invest primarily in Bitcoin Futures Contracts, [though]  it may also invest in other Listed Bitcoin Derivatives, OTC Bitcoin Derivatives, U.S. exchange-listed ETPs, and Non-U.S. Component Stocks (collectively, ‘Bitcoin Instruments’).”

Related: Big Bitcoin Bets Being Made on Futures Exchanges

REX ETFs will place a majority of its assets in bitcoin derivatives and cash, but may also invest in U.S. exchanged-listed ETPs. The GraniteShares ETFs would follow suit, according to CNBC.

The latest bitcoin ETF news follows a move from the New York Stock Exchange that it is looking to enter the race for a bitcoin ETF. A recent filing indicates that NYSE Arca is looking to list two ProShares ETFs tracking bitcoin futures – a long product and an inverse fund.

Public records dated Dec. 19 show that the company wants to list two ETFs – the ProShares Bitcoin ETF and the ProShares Short ETF – that were originally proposed in September. According to the document, NYSE Arca, which is owned by Intercontinental Exchange (ICE), submitted the proposed rule change on Dec. 4,” reports CoinDesk.

It’s been a wild ride for the price of Bitcoin this week after rallying to a record high above $19,800 on Sunday.

However, bitcoin dropped 30.2 percent Friday morning to a low of $10,400 on Coinbase, according to CNBC, but had recovered above $14,600 by Friday afternoon, off 27 percent from the all-time high.

For more information on the cryptocurrency market, visit our Bitcoin category.