Cboe Futures Exchange, LLC (CFE) launched trading in Cboe bitcoin futures at 5:00 p.m. Central Time on December 10 under the ticker symbol "XBT". XBT℠ futures are cash-settled contracts based on the Gemini's auction price for bitcoin, denominated in U.S. dollars. Gemini Trust Company, LLC (Gemini) is a digital asset exchange and custodian founded in 2014 that allows customers to buy, sell, and store digital assets such as bitcoin, and is subject to fiduciary obligations, capital reserve requirements, and banking compliance standards of the New York State Department of Financial Services.3

Example: If the futures contract price is $400, then you can buy 0.5btc worth of this and if the price of bitcoin goes up to $450 the futures contract price will go up, and the value increases from 0.5 BTC and you can just sell for a profit. Trading a synthetic derivative rather than spot bitcoin allows you to use margin leverage to more easily buy and sell -- the contracts are just a facilitation of the value.

•   Any distributions from income or short-term capital gains that you receive generally are taxable to you as ordinary dividends for federal income tax purposes. Ordinary dividends you receive that a Fund reports as “qualified dividend income” may be taxed at the same rates as long-term capital gains, but will not be considered long-term capital gains for other federal income tax purposes, including the calculation of net capital losses.
It will not, though: Everyone is exhausted, so P&G will just add Peltz to its board. This makes sense. The election is for all practical purposes a tie; the difference in votes appears to be well within the margin for measurement error. I think in that scenario a tie has to go to the activist: If 49.98 percent of your shareholders think something is going wrong, you might as well do something to appease them. 
  •   Lack of liquid markets, and possible manipulation of blockchain-based assets. Digital assets that are represented and trade on a blockchain may not necessarily benefit from viable trading markets. Stock exchanges have listing requirements and vet issuers, and perhaps users. These conditions may not necessarily be replicated on a blockchain, depending on the platform’s controls and other policies. The more lenient a blockchain is about vetting issuers of digital assets or users that transact on the platform, the higher the potential risk for fraud or the manipulation of digital assets. These factors may decrease liquidity or volume, or increase volatility of digital securities or other assets trading on a blockchain.
You can find additional information about the Funds in the current Statement of Additional Information (“SAI”), dated October 1, 2017, as may be amended from time to time, which has been filed electronically with the Securities and Exchange Commission (“SEC”) and is incorporated by reference into, and is legally a part of, this Prospectus. A copy of the SAI is available, free of charge, online at ProShares.com. You may also receive a free copy of the SAI or make inquiries to ProShares by writing us at the address set forth above or calling us toll-free at the telephone number set forth above.
In traditional financial markets, derivatives are used as speculation objects as well as insurance against losses. The latter is known as hedging. One popular variety of derivatives used for hedging are called futures. A future is a contract between two parties in which one party agrees to pay the other a predetermined amount of money for an underlying asset at a specific point in time.