Crypto Facilities and the CME Group  have been calculating and publishing the Bitcoin Reference Rate (BRR) since November 2016. Such an official rate is a prerequisite of options trading in the traditional markets. The BRR is calculated based on the rates from the biggest exchanges: Bitstamp, GDAX, itBit, and Kraken. More concretely, it is calculated based on all Bitcoin vs. USD trades on the participating exchanges between 3 and 4 p.m. London time. To calculate the BRR, the hour between 3 and 4 is divided into 12 intervals of 5 minutes. For each interval, the volume-weighted median of the Bitcoin price is calculated (statistically, the median, in contrast to the average, prevents single outliers from distorting the price). The BRR is then the average of these 12 median values. More details about the calculation of the BRR can be found in the BRR whitepaper.

There is no registry showing which individuals or entities own bitcoin or the quantity of bitcoin that is owned by any particular person or entity. It is possible, and in fact, reasonably likely, that a small group of early bitcoin adopters hold a significant proportion of the bitcoin that has been thus far created. There are no regulations in place that would prevent a large holder of bitcoin from selling their bitcoin, which could depress the price of bitcoin and have an adverse effect on an investment in the Funds which do not take a short position in bitcoin futures contracts.

Yes but ... in cryptocurrencies? If you had borrowed 100 bitcoins to finance your working capital needs a year ago, you'd have financed about $79,000 worth of working capital. If you had to pay back 112 bitcoins today, that would come to a bit over $2 million, a dollar interest rate of over 2,400 percent. (If you'd borrowed ether you'd be paying over 12,000 percent.) Unless your working capital was bitcoin, you will not be able to pay back that loan. The lesson here is: Probably don't borrow an asset caught in a massive speculative frenzy to fund your working capital needs.
Each Fund may buy and write (sell) options for the purpose of realizing its investment objective. By buying a call option, a Fund has the right, in return for a premium paid during the term of the option, to buy the asset underlying the option at the exercise price. By writing a call option a Fund becomes obligated during the term of the option to sell the asset underlying the option at the exercise price if the option is exercised. By buying a put option, a Fund has the right, in return for a premium paid during the term of the option, to sell the asset underlying the option at the exercise price. By writing a put option, a Fund becomes obligated during the term of
The Shares are not sponsored, endorsed, sold or promoted by BofA Merrill Lynch. Neither BofA Merrill Lynch nor any of Standard & Poor’s, a division of The McGraw-Hill Companies, Inc., Standard & Poor’s Financial Services LLC, MSCI, Inc. or Frank Russell Company (the “Exchanges and Entities”) have passed on the legality or suitability of, or the accuracy or adequacy of descriptions and disclosures relating to, the Shares, nor do they make any representation or warranty, express or implied, to the owners of the Shares or any member of the public regarding the advisability of investing in securities generally or in the Shares particularly or the ability of the Index to track general hedge fund performance. BofA Merrill Lynch’s and the Exchanges and Entities’ only relationship to the Trust is the licensing of certain trademarks and trade names of BofA Merrill Lynch and the Exchanges and Entities and of the Index, which indices are determined, composed and calculated by BofA Merrill Lynch without regard to the Trust or the Shares. BofA Merrill Lynch and the Exchanges and Entities have no obligation to take the needs of the Trust or the owners of the Shares into consideration in determining, composing or calculating the Index. BofA Merrill Lynch and the Exchanges and Entities are not responsible for and have not participated in the determination of the timing of, prices at, or quantities of the Shares to be issued or in the determination or calculation of the equation by which the Shares are to be converted into or redeemed for cash or other assets. BofA Merrill Lynch and the Exchanges and Entities have no obligation or liability in connection with the administration, marketing or trading of the Shares.
With the increased use of technologies such as the Internet and the dependence on computer systems to perform necessary business functions, the Funds and the digital assets that underline the bitcoin futures contracts in which the Funds invest are susceptible to operational and information security risk. The digital nature of bitcoins and the irreversible nature of bitcoin transactions makes bitcoin an attractive target for theft, hacking and other cyber-attacks. In general, cyber incidents can result from deliberate attacks or unintentional events. Cyber-attacks include, but are not limited to gaining unauthorized access to digital systems for purposes of misappropriating assets such as bitcoin or other cryptocurrencies or gaining access to sensitive information, corrupting data, or causing operational disruption. Cyber-attacks may also be carried out in a manner that does not require gaining unauthorized access, such as causing denial-of-service attacks on websites. Such events have historically correlated with a drop in the price of bitcoin, which may adversely affect your investment in a Fund. Cyber security failures or breaches of a Fund’s third party service provider (including, but not limited to, index providers, the administrator and transfer agent) or the issuers of the bitcoin futures contracts in which the Funds invest, have the ability to cause disruptions and impact business operations, potentially resulting in financial losses, the inability of a Fund’s shareholders to transact business, violations of applicable privacy and other laws, regulatory fines, penalties, reputational damage, reimbursement or other compensation costs, and/or additional compliance costs. In addition, substantial costs may be incurred in order to prevent any cyber incidents in the future. The Funds their service providers, counterparties and other market participants on which the Funds rely could be negatively impacted as a result. While the Funds have established business continuity plans and systems to prevent such cyber-attacks, there are inherent limitations in such plans and systems including the possibility that certain risks have not been identified.
All other procedures set forth in the Authorized Participant Agreement must be followed in order to receive the next determined NAV. The requisite Fund Securities and the Balancing Amount (minus a redemption Transaction Fee or additional charges for requested cash redemptions) or the Cash Redemption Amount, as applicable and at the discretion of the Advisor, will be transferred by the second (2nd) NSCC Business Day following the date on which such request for redemption is deemed received. Cash-only redemption orders and Global Fund orders may not be placed through the Clearing Process.
reporting systems. As of October 2016, the Advisor has separate arrangements to make payments, other than for the educational programs and marketing activities described above, to Charles Schwab & Co., Inc. and Raymond James Financial Services, Inc. (the “Firms”). Pursuant to the arrangements with the Firms, the Firms agreed to promote certain ProShares ETFs to each Firm’s customers and not to charge certain of their customers any commissions when those customers purchase or sell shares of certain ProShares ETFs. These payments, which may be significant, are paid by the Advisor from its own resources and not from the assets of the Funds. A discussion regarding the basis for the Board of Trustees approving the Advisory Agreement of the Trust will be (or is) available in the Trust’s Annual and/or Semi-Annual Report to shareholders. The Investment Advisory fees paid, as well as any amounts reimbursed pursuant to the Expense Limitation Agreement, for the fiscal years ended May 31, 2015, May 31, 2016 and May 31, 2017 for each Fund that was operational as of each date are set forth below. Because each of the New Funds was not operational at the end of the Trust’s last fiscal year, information on investment advisory fees paid by the Fund is not included in this SAI.
More generally, investments by a Fund in options, futures, forward contracts, swaps and other derivative financial instruments are subject to numerous special and complex tax rules. These rules could affect whether gains and losses recognized by a Fund are treated as ordinary or capital, accelerate the recognition of income or gains to a Fund and defer or possibly prevent the recognition or use of certain losses by a Fund. The rules could, in turn, affect the amount, timing or character of the income distributed to shareholders by a Fund. In addition, because the tax rules applicable to such instruments may be uncertain under current law, an adverse determination or future IRS guidance with respect to these rules (which determination or guidance could be retroactive) may affect whether a Fund has made sufficient distributions and otherwise satisfied the relevant requirements to maintain its qualification as a RIC and avoid a Fund-level tax.
Traders A and B in the previous example are hedgers. However, futures contracts, once they exist, can also be bought and sold in their own right. This is where futures get interesting for speculators. Say that Speculator X believes the price of a ton of pork belly will rise to 1,200 USD in 3 months’ time, so buying the futures contract at 1,000 USD is a good deal. He can then sell the contract to bacon producers who want to buy pork bellies at 1,000 USD. The option to buy at a specified price in the future is known as a call option. The price of call options rise when traders assume that the price of the underlying asset will rise.