After the Transfer Agent has deemed an order for redemption outside the Clearing Process received, the Transfer Agent will initiate procedures to transfer the requisite Fund Securities and the Balancing Amount (minus a redemption Transaction Fee or additional charges for requested cash redemptions), which are expected to be delivered within two Business Days, and the Cash Redemption Amount (by the second Business Day (T+2) following the transmittal date on which such redemption order is deemed received by the Transfer Agent).
A Fund may cover its sale of a call option on a futures contract by taking a long position in the underlying futures contract at a price less than or equal to the strike price of the call option, or, if the long position in the underlying futures contract is established at a price greater than the strike price of the written (sold) call, the Fund will earmark/segregate liquid instruments equal in value to the difference between the strike price of the call and the price of the future. A Fund may also cover its sale of a call option by taking positions in instruments whose prices are expected to move relatively consistently with the call option. A Fund may cover its sale of a put option on a futures contract by taking a short position in the underlying futures contract at a price greater than or equal to the strike price of the put option, or, if the short position in the underlying futures contract is established at a price less than the strike price of the written put, the Fund will segregate cash or liquid instruments equal in value to the difference between the strike price of the put and the price of the future. A Fund may also cover its sale of a put option by taking positions in instruments whose prices are expected to move relatively consistently to the put option.
Here you will learn more broad concepts regarding daytrading bitcoin and futures in general. Even if you are not an active trader, there's a lot to learn about markets and how they're structured in this guide.  Some of the early sections may be a little too easy for those of you who already are traders, so just navigate through to the part that is most relevant to you if you want to hit a more advanced topic in the guide.

The Bitcoin Network’s functionality relies on the Internet. A broadly accepted and widely adopted decentralized network is necessary for a fully-functional blockchain network, such as the Bitcoin Network. Features of the Bitcoin Network, such as decentralization, open source protocol, and reliance on peer-to-peer connectivity, are essential to preserve the stability of the network and decrease the risk of fraud or cyber-attacks. A significant disruption of Internet connectivity affecting large numbers of users or geographic areas could impede the functionality of the Bitcoin Network and adversely affect a Fund. In addition to technical disruptions such as cyber-attacks, the potential elimination of the net neutrality regulations in the U.S. may have a negative impact on miners, Bitcoin Markets and the Bitcoin ecosystem. Any technical disruptions or regulatory limitations that affect Internet access may have an adverse effect on the Bitcoin Network, the price of bitcoin and the Bitcoin Instruments in which the Funds invest.

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.
Institutional markets for restricted securities have developed as a result of the promulgation of Rule 144A under the 1933 Act, which provides a safe harbor from 1933 Act registration requirements for qualifying sales to institutional investors. When Rule 144A securities present an attractive investment opportunity and otherwise meet selection criteria, a Fund may make such investments. Whether or not such securities are illiquid depends on the market that exists for the particular security. The staff of the SEC has taken the position that the liquidity of Rule 144A restricted securities is a question of fact for a board of trustees to determine, such determination to be based on a consideration of the readily-available trading markets and the review of any contractual restrictions.
When the Fund has an open futures contract position, it is subject to daily variation margin calls that could be substantial in the event of adverse price movements. If the Fund has insufficient cash to meet daily variation margin requirements, it might need to sell securities at a time when such sales are disadvantageous. Futures markets are highly volatile and the use of or exposure to futures contracts may increase volatility of the Fund’s NAV. Futures contracts are also subject to liquidity risk.

There's a lot of ins and outs which can get confusing in arbitrage trading. We won't go into the technicals of why futures contracts trade at a premium to spot price. You can read a full explanation here. If it's not of interest to you, all you need to know is that there's a tendency, the further out in time the futures contract expires, for the premium to spot to be higher and higher in nominal percentage terms.
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