The Board of Trustees of the Trust reserves the right to declare a split or a consolidation in the number of Shares outstanding of any Fund, and may make a corresponding change in the number of Shares constituting a Creation Unit, in the event that the per Share price in the secondary market rises (or declines) to an amount that falls outside the range deemed desirable by the Board.
Maintenance Margin - this is the % of the position value you have to have in your account at the very minimum to avoid being Margin Called.  In some exchanges, margin call will mean you get notified and must deposit more margin to avoid liquidation (like CryptoFacilities). On other exchanges you will at this point be liquidated out of your position. So if maintenance margin is 5%, then the 0.05 BTC of your initial margin will need to be kept for the position to be alive.
For each intervening holiday in the applicable foreign market that is not a holiday observed by the U.S. equity markets, the redemption settlement cycle will be extended by the number of days of such intervening holiday. In addition to holidays, other unforeseeable closings in a foreign market, including due to regulatory action, may also prevent a Fund from delivering securities within the normal settlement period.
Transactions in options, futures, forward contracts, swaps and certain positions undertaken by the Funds may result in “straddles” for federal income tax purposes. The straddle rules may affect the character of gains (or losses) realized by a Fund, and losses realized by the Fund on positions that are part of a straddle may be deferred under the straddle rules, rather than being taken into account in calculating taxable income for the taxable year in which the losses are realized. In addition, certain carrying charges (including interest expense) associated with positions in a straddle may be required to be capitalized rather than deducted currently. Certain elections that a Fund may make with respect to its straddle positions may also affect the amount, character and timing of the recognition of gains or losses from the affected positions.

While Ethereum focuses on dapps and Ripple on ultra-fast finances, Monero focuses on – privacy! This technology actually uses cryptography to protect all incoming and outgoing addresses, as well as the transmitted amounts. Monero is an all-in-one solution for all privacy enthusiasts, and as such, it holds tremendous potential for great success in the crypto world. Monero is my favourite coin.
The introduction of futures didn't lead to a wave of hedge-fund money shorting bitcoin. It led to retail and institutional money going long bitcoin. We talked last week about the spread between Cboe's bitcoin futures price and the actual price of bitcoin, which was wider than $1,000 for a while. The spread has tightened considerably -- as of 8:15 a.m. today, the CME futures traded at $18,585, Cboe futures at $18,670, and spot bitcoin at about $18,245, for a spread of about 2 percent -- but it still exists. Why would you pay more for a synthetic bitcoin in a month than you would for an actual bitcoin today? The answer, presumably, is that the synthetic bitcoin is more valuable to you: You want bitcoin exposure, but you'd prefer to get it through a standardized contract on a regulated exchange that settles in dollars. 
Shares may be issued in advance of receipt by the Trust of all or a portion of the applicable Deposit Securities as described below. In these circumstances, the initial deposit may have a greater value than the NAV of the Shares on the date the order is placed in proper form because, in addition to the available Deposit Securities, cash must be deposited in an amount equal to the sum of (i) the Balancing Amount, plus (ii) up to 115% of the market value of the undelivered Deposit Securities (the “Additional Cash Deposit”). Additional amounts of cash may be required to be deposited with the Trust, pending delivery of the missing Deposit Securities to the extent necessary to maintain the Additional Cash Deposit with the Trust in an amount up to 115% of the daily mark-to-market value of the missing Deposit Securities. Authorized Participants will be liable to the Trust for the costs incurred by the Trust in connection with any such purchases. These costs will be deemed to include the amount by which the actual purchase price of the Deposit Securities exceeds the market value of such Deposit Securities on the day the purchase order was deemed received by the Distributor plus the brokerage and related transaction costs associated with such purchases. The Trust will return any unused portion of the Additional Cash Deposit once all of the missing Deposit Securities have been properly received by the Custodian or any sub-custodian or purchased by the Trust and deposited into the Trust. In addition, a Transaction Fee, as described below, will be charged in all cases. The delivery of Shares so purchased will occur no later than the third Business Day following the day on which the purchase order is deemed received by the Distributor.

Other countries are not as accommodative of bitcoin. For example, the Chinese government on December 3, 2013 issued a notice that classified bitcoin as legal and “virtual commodities;” however, the same notice restricted the banking and payment industries from using bitcoin, creating uncertainty and limiting the ability of Bitcoin Exchanges to operate in the then-second largest bitcoin market. Then on September 15, 2017, the Chinese government and local financial regulators officially requested some Chinese Bitcoin Exchanges and digital asset trading platforms to shut down by the end of September 2017. In addition, the Central Bank of Bolivia banned the use of bitcoin as a means of payment in May 2014. Further, in July 2016, the Russian Ministry of Finance indicated it supports a proposed law that bans bitcoin domestically but allows for its use as a foreign currency. In September 2017 the head of the Russian central bank stated that it is categorically against regulating cryptocurrencies as money, as a means by which payment can be made for goods and services, and against equating them with foreign currency. Most recently, South Korea’s Office for Government Policy Coordination released a wide variety of proposed regulations which range from the imposition of capital gains taxes on profits realized from cryptocurrency trading, to banning minors from registering on South Korean bitcoin exchanges, and even prohibiting financial institutions from investing in digital assets. These restrictive stances towards digital assets may reduce the rate of expansion of bitcoin use or even eliminate the use of bitcoin entirely in these geographies.
FOREIGN SOVEREIGN, SUB-SOVEREIGN, QUASI SOVEREIGN AND SUPRANATIONAL SECURITIES. The Funds may invest in fixed-rate debt securities issued by: non-U.S. governments (foreign sovereign bonds); local governments, entities or agencies of a non-U.S. country (foreign sub-sovereign bonds); corporations with significant government ownership (“Quasi-Sovereigns”); or two or more central governments or institutions (supranational bonds). These types of debt securities are typically
Homero Josh Garza, who founded the cryptocurrency startups GAW Miners and ZenMiner in 2014, acknowledged in a plea agreement that the companies were part of a pyramid scheme, and pleaded guilty to wire fraud in 2015. The U.S. Securities and Exchange Commission separately brought a civil enforcement action against Garza, who was eventually ordered to pay a judgment of $9.1 million plus $700,000 in interest. The SEC's complaint stated that Garza, through his companies, had fraudulently sold "investment contracts representing shares in the profits they claimed would be generated" from mining.[88]

The first U.S. bitcoin futures are here. Bitcoin futures opened for trading on the Cboe Futures Exchange, LLC (CFE) on December 10, 2017. This is one of the biggest milestones for bitcoin since it emerged in the wake of the 2008-09 financial crisis. Bitcoin futures will bring much-needed transparency, greater liquidity and efficient price discovery to the ecosystem. Cboe will be soon joined by CME Group as it prepares to launch bitcoin futures contracts on December 18, 2017.
Investors purchasing and selling shares in the secondary market may not experience investment results consistent with those experienced by Authorized Participants creating and redeeming directly with the Fund. To the extent that exchange specialists, market makers, Authorized Participants, or other participants are unavailable or unable to trade the Fund’s shares and/or create or redeem Creation Units, trading spreads and the resulting premium or discount on the Fund’s shares may widen and the Fund’s shares may possibly be subject to trading halts and/or delisting.
A Precautionary Note to Retail Investors — The Depository Trust Company (“DTC”), a limited trust company and securities depositary that serves as a national clearinghouse for the settlement of trades for its participating banks and broker-dealers, or its nominee will be the registered owner of all outstanding shares of the fund Your ownership of shares will be shown on the records of DTC and the DTC Participant broker through whom you hold the shares. PROSHARES TRUST WILL NOT HAVE ANY RECORD OF YOUR OWNERSHIP. Your account information will be maintained by your broker, who will provide you with account statements, confirmations of your purchases and sales of shares, and tax information. Your broker also will be responsible for furnishing certain cost basis information and ensuring that you receive shareholder reports and other communications from the Fund. Typically, you will receive other services only if your broker offers these services.
A Precautionary Note Regarding Unusual Circumstances — ProShares Trust can postpone payment of redemption proceeds for any period during which (1) [the Exchange] is closed other than customary weekend and holiday closings, (2) trading on [the Exchange] is restricted, (3) any emergency circumstances exist, as determined by the SEC, and (4) the SEC by order permits for the protection of shareholders of the Fund, as further described in the SAI.
S&P 500 Dividend Aristocrats ETF; S&P MidCap 400 Dividend Aristocrats ETF; Russell 2000 Dividend Growers ETF; Equities for Rising Rates ETF; Morningstar Alternatives Solution ETF; S&P 500 Ex-Energy ETF; S&P 500 Ex-Financials ETF; S&P 500 Ex-Health Care ETF; and S&P 500 Ex-Technology ETF	  	4:00 p.m. (3:30 p.m. if in cash) in order to receive that day’s closing NAV per Share

At or before the maturity of a forward currency contract, the Funds may either sell a portfolio security and make delivery of the currency, or retain the security and terminate its contractual obligation to deliver the currency by buying an “offsetting” contract obligating them to buy, on the same maturity date, the same amount of the currency. If the Fund engages in an offsetting transaction, it may later enter into a new forward currency contract to sell the currency.
A piece of software or hardware that gives you the ability to store and exchange your cryptocurrencies. Each cryptocurrency wallet is encrypted and unique. When you send funds you actually broadcast an encrypted message to the recipient. Only the recipient’s cryptocurrency wallet can decrypt that message and thus receive the funds. A hardware cryptocurrency wallet is considered to have key advantages over other software wallets:
Under a Rule 12b-1 Distribution Plan (the “Plan”) adopted by the Board, each Fund may pay its distributor and financial intermediaries, such as broker-dealers and investment advisors, up to 0.25% on an annualized basis of the average daily net assets of a Fund as reimbursement or compensation for distribution related activities with respect to the Funds. Because these fees are paid out of each Fund’s assets on an on-going basis, over time these fees will increase the cost of your investment and may cost you more than paying other types of sales charges. For the prior fiscal year, no payments were made by the fund under the Plan.

The use of swaps is a highly specialized activity which involves investment techniques and risks in addition to, and in some cases different from, those associated with ordinary portfolio securities transactions. The primary risks associated with the use of swap agreements are mispricing or improper valuation, imperfect correlation between movements in the notional amount and the price of the underlying investments, and the inability of the counterparties or clearing organization to perform. If a counterparty’s creditworthiness for an over-the-counter swap declines, the value of the swap would likely decline. Moreover, there is no guarantee that a Fund could eliminate its exposure under an outstanding swap agreement by entering into an offsetting swap agreement with the same or another party. In addition, a Fund may use a combination of swaps on an underlying index and swaps on an ETF that is designed to track the performance of that index. The performance of an ETF may not track the performance of its underlying index due to embedded costs
Distributions by the Fund to foreign shareholders other than Capital Gain Dividends, short-term capital gain dividends and interest-related dividends (e.g., dividends attributable to foreign-source dividend and interest income or to short-term capital gains or U.S. source interest income to which the exception from withholding described above does not apply) are generally subject to withholding of U.S. federal income tax at a rate of 30% (or lower applicable treaty rate).
There are also purely technical elements to consider. For example, technological advancement in cryptocurrencies such as bitcoin result in high up-front costs to miners in the form of specialized hardware and software.[105] Cryptocurrency transactions are normally irreversible after a number of blocks confirm the transaction. Additionally, cryptocurrency can be permanently lost from local storage due to malware or data loss. This can also happen through the destruction of the physical media, effectively removing lost cryptocurrencies forever from their markets.[106]
Capital losses in excess of capital gains (“net capital losses”) are not permitted to be deducted against a Fund’s net investment income. Instead, potentially subject to certain limitations, a Fund may carry net capital losses forward from any taxable year to subsequent taxable years to offset capital gains, if any, realized during such subsequent taxable years. Distributions from capital gains are generally made after applying any available capital loss carryforwards. Capital loss carryforwards are reduced to the extent they offset current-year net realized capital gains, whether the Funds retain or distribute such gains. If a Fund incurs or has incurred net capital losses in taxable years beginning after December 22, 2010 (post-2010 losses), those losses will be carried forward to one or more subsequent taxable years, and will be treated as realized on the first day of the taxable year in which it is used to reduce capital gain, without expiration; any such carryforward losses will generally retain their character as short-term or long-term and will be applied first against gains of the same character before offsetting gains of a different character (e.g., net capital losses resulting from previously realized net long-term losses will first offset any long-term capital gain, with any remaining amounts available to offset any net short-term capital gain). If a Fund incurred net capital losses in a taxable year beginning on or before December 22, 2010 (“pre-2011 losses”), the Fund is permitted to carry such losses forward for eight taxable years; in the year to which they are carried forward, such losses are treated as short-term capital losses that first offset any short-term capital gains, and then offset any long-term capital gains. A Fund must use any post-2010 losses, which will not expire, before it uses any pre-2011 losses. This increases the likelihood that pre-2011 losses will expire unused at the conclusion of the eight-year carryforward period.

The Fund pays transaction costs, such as commissions, when it buys and sells securities (including through the Subsidiary, as defined below), or “turns over” its portfolio. A higher portfolio turnover rate for the Fund or the Subsidiary may indicate higher transaction costs and may result in higher taxes when the Fund’s shares are held in a taxable account. These costs, which are not reflected in Annual Fund Operating Expenses or in the example above, affect the Fund’s performance. The Fund has not yet commenced operations as of the date of this Prospectus. Thus, no portfolio turnover information is provided for this Fund.
In order to make sure that you actually have money in your margin account to settle the difference with Mortimer every day, you are required to put up an initial margin at the beginning of the contract. A lower sum, the so-called minimum margin or maintenance margin, is also defined by the broker. If the money in your margin account falls from the initial margin to the maintenance margin, it triggers a margin call: The broker requests you to fill up your margin account to at least the initial margin (of course, you may also put up more).