It is also possible that other digital currencies, typically referred to as “alt-coins”, and trading systems could become more widely accepted and used than Bitcoin. In particular, the digital asset “ethereum” has acquired a substantial share of the cryptocurrency market in recent months, which may be in part due to perceived institutional backing and/or potentially advantageous features not incorporated into bitcoin. There are other cryptocurrencies gaining momentum as the price of the bitcoin continues to rise and investors see the cheaper cryptocurrencies as attractive alternatives. The continued rise of these alt-coins can lead to a reduction in demand for bitcoin, which could have an adverse effect on the price of bitcoin and may have an adverse impact on the performance of Bitcoin Instruments and the performance of the Funds.
The portfolio composition file (“PCF”) and the IOPV file, which contain equivalent portfolio holdings information, will be made available as frequently as daily to the Funds’ service providers to facilitate the provision of services to the Funds and to certain other entities (“Entities”) in connection with the dissemination of information necessary for transactions in Creation Units, as contemplated by exemptive orders issued by the SEC and other legal and business requirements pursuant to which the Funds create and redeem Shares. Entities are generally limited to National Securities Clearing Corporation (“NSCC”) members and subscribers to various fee-based services, including large institutional investors (“Authorized Participants”) that have been authorized by the Distributor to purchase and redeem Creation Units and other institutional market participants that provide information services. Each business day, Fund portfolio holdings information will be provided to the Distributor or other agent for dissemination through the facilities of the NSCC and/or through other fee-based services to NSCC members and/or subscribers to the fee-based services, including Authorized Participants, and to entities that publish and/or analyze such information in connection with the process of purchasing or redeeming Creation Units or trading Shares of Funds in the secondary market.
The method by which Creation Units are created and traded may raise certain issues under applicable securities laws. Because new Creation Units are issued and sold by the Trust on an ongoing basis, at any point a “distribution,” as such term is used in the 1933 Act, may occur. Broker-dealers and other persons are cautioned that some activities on their part may, depending on the circumstances, result in their being deemed participants in a distribution in a manner which could render them statutory underwriters and subject them to the prospectus delivery and liability provisions of the 1933 Act. For example, a broker-dealer firm or its client may be deemed a statutory underwriter if it takes Creation Units after placing an order with the Distributor, breaks them down into constituent Shares and sells some or all of the Shares comprising such Creation Units directly to its customers; or if it chooses to couple the creation of a supply of new Shares with an active selling effort involving solicitation of secondary market demand for Shares. A determination of whether a person is an underwriter for the purposes of the 1933 Act depends upon all the facts and circumstances pertaining to that person’s activities. Thus, the examples mentioned above should not be considered a complete description of all the activities that could lead a person to be deemed an underwriter. Broker-dealer firms should also note that dealers who are effecting transactions in Shares, whether or not participating in the distribution of Shares, are generally required to deliver a prospectus. This is because the prospectus delivery exemption in Section 4(3) of the 1933 Act is not available in respect of such transactions as a result
If anything, the problem seems to start with incredibly lax risk management at this exchange.  According to the OKEX statement, the risk management team 'immediately' contacted the client to reduce the size of the trade - begging the question - how did their risk management system allow the trade to occur in the first place?  On the bright side, something like that should be easy to fix, but it is indicative, potentially of how many simple things are being overlooked in the rush to make money from crypto trading.
The Trust is a Delaware statutory trust and registered investment company. The Trust was organized on May 29, 2002, and has authorized capital of unlimited Shares of beneficial interest of no par value which may be issued in more than one class or series. Currently, the Trust consists of multiple separately managed series. The Board of Trustees may designate additional series of beneficial interest and classify Shares of a particular series into one or more classes of that series.

In addition, there may be times when the market price and the value of the Fund’s holdings vary significantly and you may pay more than the value of the Fund’s holdings when buying the Fund’s shares on the secondary market, and you may receive less than the value of the Fund’s holdings when you sell those shares. While the creation/ redemption feature is designed to make it likely that shares normally will trade close to the value of the Fund’s holdings, disruptions to creations and redemptions may result in trading prices that differ significantly from the value of the Fund’s holdings. The market price of shares, like the price of any exchange-traded security, includes a “bid-ask spread” charged by the exchange specialist, market makers or other participants that trade the particular security. In times of severe market disruption, the bid-ask spread often increases significantly. This means that shares may trade at a discount to the value of the Fund’s holdings, and the discount is likely to be greatest when the price of shares is falling fastest, which may be the time that you most want to sell your shares. The Fund’s investment results are measured based upon the daily NAV of the Fund. Investors purchasing and selling shares in the secondary market may not experience investment results consistent with those experienced by Authorized Participants creating and redeeming shares directly with the Fund.
Bitcoin is pseudonymous rather than anonymous in that the cryptocurrency within a wallet is not tied to people, but rather to one or more specific keys (or "addresses").[53] Thereby, bitcoin owners are not identifiable, but all transactions are publicly available in the blockchain.[53] Still, cryptocurrency exchanges are often required by law to collect the personal information of their users.[53]
Note: This Prospectus provides general U.S. federal income tax information only. Your investment in the Fund may have other tax implications. If you are investing through a tax-deferred retirement account, such as an individual retirement account (IRA), special tax rules apply. Please consult your tax advisor for detailed information about a Fund’s tax consequences for you. See “Taxation” in the SAI for more information.
In addition, the securities of some foreign governments, companies and markets are less liquid, and may be more volatile, than comparable securities of domestic governments, companies and markets. Some foreign investments may be subject to brokerage commissions and fees that are higher than those applicable to U.S. investments. A Fund also may be affected by different settlement practices or delayed settlements in some foreign markets. Moreover, some foreign jurisdictions regulate and limit U.S. investments in the securities of certain issuers.
•   Foreign Investments Risk — Investing in securities of foreign issuers may provide the Fund with increased risk. Various factors related to foreign investments may negatively impact the Fund’s performance, such as: i) fluctuations in the value of the applicable foreign currency; ii) differences in securities settlement practices; iii) uncertainty associated with evidence of ownership of investments in countries that lack centralized custodial services; iv) possible regulation of, or other limitations on, investments by U.S. investors in foreign investments; v) potentially higher brokerage commissions; vi) the possibility that a foreign government may withhold portions of interest and dividends at the source; vii) taxation of income earned in foreign countries or other foreign taxes imposed; viii) foreign exchange controls, which may include suspension of the ability to transfer currency from a foreign country; ix) less publicly available information about foreign issuers; x) changes in the denomination currency of a foreign investment; and xi) less certain legal systems in which the Fund might encounter difficulties or be unable to pursue legal remedies. Foreign investments also may be more susceptible to political, social, economic and regional factors than might be the case with U.S. securities. In addition, markets for foreign investments are usually less liquid, more volatile and significantly smaller than markets for U.S. securities, which may affect, among other things, the Fund’s ability to purchase or sell foreign investments at appropriate times. Because of differences in settlement times and/or foreign market holidays, transactions in a foreign market may take place one or more days after the necessary exposure to these investments is determined. Until the transactions are effected, the Fund is exposed to increased foreign currency risk and market risk.
Coinbase, headquartered in San Francisco, is an online bitcoin broking exchange which caters to US, Canada, Europe, UK, Australia, Singapore. Up to 150 US dollars and pounds can be bought on Coinbase on a daily basis. It charges a 3.99% on all the exchanges via credit or debit card. Coinbase offers very high limits. Limits depend on your account level, which is determined by how much information you have verified. Fully verified U.S. customers may buy up to $50,000 worth of bitcoin daily.
DTC may determine to discontinue providing its service with respect to Shares at any time by giving reasonable notice to the Trust and discharging its responsibilities with respect thereto under applicable law. Under such circumstances, the Trust shall take action either to find a replacement for DTC to perform its functions at a comparable cost or, if such a replacement is unavailable, to issue and deliver printed certificates representing ownership of Shares, unless the Trust makes other arrangements with respect thereto satisfactory to the Exchange. In addition, certain brokers may make a dividend reinvestment service available to their clients. Brokers offering such services may require investors to adhere to specific procedures and timetables in order to participate. Investors interested in such a service should contact their broker for availability and other necessary details.
Bitcoin is maintained on the decentralized, open source protocol of the peer-to-peer bitcoin computer network (the “Bitcoin Network”). No single entity owns or operates the Bitcoin Network. The infrastructure of the Bitcoin Network is collectively maintained by a decentralized user base. The Bitcoin Network is accessed through software, and software governs bitcoin’s creation, movement, and ownership. The value of bitcoin is determined in great part by the supply of (which is limited), and demand for, bitcoin in the global exchange markets for the trading of bitcoin (individually, “Bitcoin Exchanges” and collectively, the “Bitcoin Exchange Market”), market expectations for the adoption of bitcoin and the volume of private user-to-user transactions.
•   Daily Position Limit Risk - Many U.S. futures exchanges limit the amount of fluctuation permitted in futures contract prices during a single trading day. Once the daily limit has been reached in a particular contract, no trades may be made that day at a price beyond that limit or trading may be suspended for specified periods during the trading day. In addition, these exchanges have established limits on the maximum amount of futures positions that any person may hold or control on such exchanges. These limits may restrict the amount of assets the Fund is able to invest in bitcoin futures contracts or have a negative impact on the price of such contracts. In order to comply with such limits, the Fund may be required to reduce the size of its outstanding positions or not enter into new positions that would otherwise be taken for the Fund. This could potentially subject the Funds to substantial losses or periods in which the Fund does not accept additional Creation Units.
 	•	 	The bitcoin exchanges on which bitcoin trades are relatively new and, in most cases, largely unregulated and, therefore, may be more exposed to fraud and security breaches than established, regulated exchanges for other products. Over the past several years, a number of Bitcoin Exchanges have been closed due to fraud, failure, security breaches or governmental regulations. The nature of the assets held at Bitcoin Exchanges make them appealing targets for hackers and a number of Bitcoin Exchanges have been victims of cybercrimes. No Bitcoin Exchange is immune from these risks. Fraudulent activity can increase volatility and have an adverse effect on the price of bitcoin, the general acceptance of bitcoin as an investment or means of currency and could have a negative impact on the bitcoin futures contracts in which the Fund invests and the value of the Fund.

 	•	 	Bitcoin and investments linked to bitcoin, including bitcoin futures contracts, can be highly volatile and may experience large losses. The price of bitcoin has experienced periods of extreme volatility and low liquidity. Speculators and investors who seek to profit from trading and holding bitcoin currently account for a significant portion of bitcoin demand. Such speculation regarding the potential future appreciation in the value of bitcoin may artificially inflate the price of bitcoin. The price of bitcoin recently has been at or near all-time highs. There can be no guarantee this will continue and the market for bitcoin, and therefore bitcoin futures contracts, may change suddenly and without warning.

In a futures market, if the price is $500/BTC, an investor needs to buy 50 futures contracts, each worth $10. If an investor wishes to open a positive position then he goes long with “buy" contracts, and if he decides to open a negative position, he goes short with “sell” contracts. An investor’s position can be either positive or negative for the same instrument. (For more, see: Bitcoin Mass Hysteria: The Disaster that Brought Down Mt. Gox.)
Each Fund generally engages in closing or offsetting transactions before final settlement of a futures contract wherein a second identical futures contract is sold to offset a long position (or bought to offset a short position). In such cases, the obligation is to deliver (or take delivery of) cash equal to a specific dollar amount (the contract multiplier) multiplied by the difference between the price of the offsetting transaction and the price at which the original contract was entered into. If the original position entered into is a long position (futures contract purchased), there will be a gain (loss) if the offsetting sell transaction is carried out at a higher (lower) price, inclusive of commissions. If the original position entered into is a short position (futures contract sold) there will be a gain (loss) if the offsetting buy transaction is carried out at a lower (higher) price, inclusive of commissions.
The tables below shows performance examples of an Ultra and UltraShort ProShares Fund that have investment objective to correspond to two times (2x) and two times the inverse (-2x) of, respectively, the daily performance of an index. In the charts below, areas shaded lighter represent those scenarios where a Fund will return the same or outperform (i.e., return more than) the index performance times the stated multiple in the Fund’s investment objective; conversely areas shaded darker represent those scenarios where the Fund will underperform (i.e., return less than) the index performance times the stated multiple in the Fund’s investment objective.

•   Short Sale Exposure Risk — The Fund seeks inverse or “short” exposure through short positions in bitcoin futures contracts and other financial instruments. This will cause the Fund to be exposed to certain risks associated with selling assets short. These risks include, under certain market conditions, an increase in the volatility and decrease in the liquidity of the asset underlying the short position, which may lower the Fund’s return, result in a loss, have the effect of limiting the Fund’s ability to obtain inverse exposure through financial instruments such as swap agreements and futures contracts, or require the Fund to seek inverse exposure through alternative investment strategies that may be less desirable or more costly to implement. To the extent that, at any particular point in time, the assets underlying the short position may be thinly traded or have a limited market, including due to regulatory action, the Fund may be unable to meet its investment objective due to a lack of available securities or counterparties. During such periods, the Fund’s ability to issue additional Creation Units may be adversely affected. Obtaining inverse exposure through these instruments may be considered an aggressive investment technique. Inverse exposure must be actively managed in order to keep the Fund fully invested. See “Compounding Risk” above for an explanation of how this impacts performance
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.
On September 15, 2015, the Conference of State Bank Supervisors finalized their proposed model regulatory framework for state regulation of participants in “virtual currency activities.” The Conference of State Bank Supervisors proposed framework is a non-binding model and would have to be independently adopted, in sum or in part, by state legislatures or regulators on a case-by-case basis. In July 2017, the Uniform Law Commission (the “ULC”), a private body of lawyers and legal academics from the several U.S. states, voted to finalize and approve a uniform model state law for the regulation of virtual currency businesses, including bitcoin (the “Uniform Virtual Currency Act”). Having been approved by the ULC, the Uniform Virtual Currency Act now goes to each of the U.S. states and territories for their consideration and would have to be independently adopted, in sum or in part, by state legislatures or regulators on a case-by-case basis.

As bitcoin and other digital assets have grown in popularity and in market size, certain U.S. federal and state governments, foreign governments and self-regulatory agencies have begun to examine the operations of bitcoin, digital assets, the Bitcoin Network, bitcoin users, Bitcoin Exchanges and the Bitcoin Exchange Market. These regulatory efforts include, but are not limited to, the following.
You might buy in to your Ethereum position at $1000, you set your sell position $1300. Your sell order could take days, weeks, months, years or till the end of time to be filled. Once it has been filled, you then take that profit and you roll it over in to a new buy over at, say, $1100. Choosing good targets for your buy and sell orders is crucial if you want to be a successful swing trader but overall swing trading cryptocurrency is pretty easy – set your orders and then just wait.
Upon a sale, exchange or other disposition of shares of a Fund, a shareholder will generally realize a taxable gain or loss depending upon his or her basis in the shares. A gain or loss will be treated as capital gain or loss if the shares are capital assets in the shareholder’s hands, and generally will be long-term or short-term capital gain or loss depending upon the shareholder’s holding period for the shares. Any loss realized on a sale, exchange or other disposition will be disallowed to the extent the shares disposed of are replaced (including through reinvestment of dividends) within a period of 61 days beginning 30 days before and ending 30 days after the shares are disposed of. In such a case, the basis of the shares acquired will be adjusted to reflect the disallowed loss. Any loss realized by a shareholder on the disposition of a Fund’s Shares held by the shareholder for six months or less will be treated for tax purposes as a long-term capital loss to the extent of any distributions of Capital Gain Dividends received or treated as having been received by the shareholder with respect to such shares.

A cryptocurrency is a digital coin, designed to be transferred between people in virtual transactions. Cryptocurrencies exist only as data and not as physical objects; you cannot actually hold a Bitcoin in your hand or keep Ethereum in your safe. Owning a Bitcoin means you have the collective agreement of each and every computer on the Bitcoin network that it is currently owned by you and – more importantly – that it was legitimately created by a miner.
In contrast, if you are “going short” on Bitcoin, you assume that Bitcoin prices will fall. Buying put options will enable you to sell Bitcoin at some point in the future at a price that is higher than the future price you expect. In analogy to the example above, if the current Bitcoin price is 5,000 USD and you expect it to fall to 2,000 USD in 6 months, then put options allowing you to sell Bitcoin for 5,000 USD in 5 months (when everyone else is selling for 2000 USD) are very valuable.
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