For each of the following Funds that hold Non-U.S. Investments: the DJ Brookfield Global Infrastructure ETF; the Global Listed Private Equity ETF; the MSCI EAFE Dividend Growers ETF; the MSCI Europe Dividend Growers; the Short Term USD Emerging Markets Bond ETF; and the Merger ETF (each a “Global Fund” and collectively the “Global Funds”), when a purchase order is placed, the Distributor will inform the Advisor and the Custodian. The Custodian shall cause local sub-custodians of the applicable Global Fund to maintain an account into which the Authorized Participant shall deliver, on behalf of itself or the party on whose behalf it is acting, the Deposit Securities “free of payment,” with any appropriate adjustments as advised by the Trust, in accordance with the terms and conditions applicable to such account in such jurisdiction. If applicable, the sub-custodian(s) will confirm to the Custodian that the required Deposit Securities have been delivered and the Custodian will notify the Advisor and Distributor. The Authorized Participant must also make available to the Custodian no later than 12:00 noon Eastern Time (or earlier in the event that the relevant Exchange or the relevant bond markets close early) by the second Business Day after the order is deemed received through the Federal Reserve Bank wire transfer system, immediately available or same day funds in U.S. dollars estimated by the Trust to be sufficient to pay the Balancing Amount next determined after acceptance of the purchase order, together with any applicable Transaction Fees. For Global Funds, the Index Receipt Agent will not make available through the NSCC on each Business Day, the list of the names and the required number of shares of each Deposit Security to be included in the current Portfolio Deposit.
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

  shareholders, and were ineligible to or were not to cure such failure, the Fund would be taxed in the same manner as an ordinary corporation subject to U.S. federal income tax on all its income at the fund level. The resulting taxes could substantially reduce the Fund’s net assets and the amount of income available for distribution. In addition, in order to requalify for taxation as a RIC, the Fund could be required to recognize unrealized gains, pay substantial taxes and interest, and make certain distributions.


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.
Each Fund may provide redemptions in portfolio securities or cash at the Advisor’s discretion. With respect to the Matching and Ultra ProShares Funds, the Index Receipt Agent makes available through the NSCC immediately prior to the opening of business on the Exchange on each day that the Exchange is open for business the portfolio securities that will be applicable (subject to possible amendment or correction) to redemption requests received in proper form (as defined below) on that day (“Fund Securities”). These securities, at times, may not be identical to Deposit Securities which are applicable to a purchase of Creation Units. The Fund may also, in its sole discretion, upon request of a shareholder, provide such redeeming shareholder a portfolio of securities which differs from the exact composition of the Fund Securities but does not differ in NAV.

The biggest problem of the Blockchain is its reliance on miners. This is exactly why the cryptocurrency called IOTA (the Internet of Thigs Application) was created in 2016. IOTA also battles increasing transaction fees and network scalability. IOTA’s blockchain is called Tangle. It is a blockchain with no blocks and no chains. In this system, the users themselves are responsible for validating transactions. This means there’s no need for approval from miners; so users enjoy a fee-free transaction and an increased process speed.
The Trust, the Advisor and the Distributor each have adopted a consolidated code of ethics (the “COE”), under Rule 17j-1 of the 1940 Act, which is reasonably designed to ensure that all acts, practices and courses of business engaged in by personnel of the Trust, the Advisor and the Distributor reflect high standards of conduct and comply with the requirements of the federal securities laws. There can be no assurance that the COE will be effective in preventing deceptive, manipulative or fraudulent activities. The COE permits personnel subject to it to invest in securities, including securities that may be held or purchased by a Fund; however, such transactions are reported on a regular basis. The Advisor’s personnel that are Access Persons, as the term is defined in the COE, subject to the COE are also required to report transactions in registered open-end investment companies advised or sub-advised by the Advisor. The COE is on file with the SEC and is available to the public.
People are getting excited about Hempcoin (THC) because it’s slowly but surely starting to re-surface again and receive some of the media’s attention that it deserves. Even though a couple of competitors recently showed up (PotCoin and CannabisCoin) – Hempcoin is actually the oldest technologies and coins – not just in the industry – but in the crypto world altogether. Hempcoin was founded back in 2014 and its sole purpose is to act as a digital currency for the Agriculture/Farming industry and naturally – the Hemp/Marijuana field.
•   Valuation Risk — In certain circumstances, portfolio holdings may be valued using techniques other than market quotations. The value established for a portfolio holding may be different from what would be produced through the use of another methodology or if it had been priced using market quotations. Portfolio holding that are valued using techniques other than market quotations, including “fair valued” securities, may be subject to greater fluctuation in their value from one day to the next than would be the case if market quotations were used. In addition, there is no assurance that the Fund could sell a portfolio holding for the value established for it at any time, and it is possible that the Fund would incur a loss because a portfolio holding is sold at a discount to its established value.
The table below shows a performance example of a Short ProShares Fund that has an investment objective to correspond to the inverse (-1x) of the daily performance of an index. In the chart below, areas shaded lighter represent those scenarios where a Short ProShares Fund will return the same or outperform (i.e., return more than) the index performance; conversely, areas shaded darker represent those scenarios where a Short ProShares Fund will underperform (i.e., return less than) the index performance.

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).
•   Active Management Risk — The performance of actively managed funds reflects, in part, the ability of ProShare Advisors to select investments and make investment decisions that are suited to achieving the Fund’s investment objective. ProShare Advisors’ judgments about the Fund’s investments may prove to be incorrect. If the investments selected and strategies employed by ProShare Advisors fail to produce the intended results, the Fund may not achieve its investment objective and could underperform other funds with a similar investment objective and/or strategies. The Fund does not seek to provide investment performance that would be opposite of a 30% investment in bitcoin futures contracts and a 70% investment in U.S. government securities.
While the DJ Brookfield Global Infrastructure ETF and the Global Listed Private Equity ETF anticipate that, under normal market conditions, each Fund will invest primarily (i.e., at least 40% of its “assets” as defined above) in securities issued by issuers organized or located outside the United States (“foreign issuers”), to the extent that foreign issuers ever comprise less than 40% of such Fund’s assets for an extended period of time (i.e., six months), the Fund will take steps to: (i) either change its name; or (ii) change its benchmark.
In general, the Code defines (1) “short-term capital gain dividends” as distributions of net short-term capital gains in excess of net long-term capital losses and (2) “interest-related dividends” as distributions from U.S. source interest income of types similar to those not subject to U.S. federal income tax if earned directly by an individual foreign shareholder, in each case to the extent such distributions are properly reported as such by a Fund in a written notice to shareholders.
Trading directly on CME is not possible unless you are a broker yourself. This means that you have to pay a high fee – between thousands and hundreds of thousands of USD – to join CME. As an individual investor, you need to find a broker who trades on CME. You will then open an account with this broker – a margin account rather than a cash account because in options trading, there is a margin involved, as we have seen above. Because this poses a higher risk for the broker – in case you can’t settle your debts – these deals can only be done in special margin accounts and not cash accounts.

This means simply that you put down 1 bitcoin and you can trade 20 on OKCoin, or 100 bitcoin on BitMEX. The multiple refers to the initial margin you need to open the nominal position value. You simply set the margin aside as collateral, and if the position goes against you, the collateral will be used to exit your position into a liquidation, or margin call.
So be aware of the premium or discount that is on longer dated contracts, this can allow you some arbitrage opportunities if you are patient and have the coins to apply to it. In general, we recommend that you trade any contract that has good liquidity and high volume. This is the most important characteristic of ANY product for a trader. If you can't get in and out reliably, and have a price that reasonably follows the spot market behavior, then it's not worth trading.
Whether a Fund realizes a gain or loss from futures activities depends generally upon movements in the underlying currency, commodity, security or index. The extent of a Fund’s loss from an unhedged short position in futures contracts or from writing options on futures contracts is potentially unlimited, and investors may lose the amount that they invest plus any profits recognized on their investment. The Funds may engage in related closing transactions with respect to options on futures contracts. The Funds will engage in transactions in futures contracts and related options that are traded on a U.S. exchange or board of trade or that have been approved for sale in the U.S. by the Commodity Futures Trading Commission (“CFTC”).
Bitcoin relies on blockchain technology. “Blockchain” is a decentralized database. Transactions are grouped in blocks and then chained together through cryptographic links. Blockchain is designed so that the chain can be added to, but not edited. This structure is called a “distributed ledger.” Transactions in the distributed ledger are permanently recorded and can never disappear, although theft and loss of bitcoin can occur. While bitcoin has grown in popularity, it’s still not nearly as widely accepted as traditional currency.

•   Subsidiary Investment Risk — Changes in the laws of the United States and/or the Cayman Islands, under which the Fund and the Subsidiary are organized, respectively, could result in the inability of the Fund to operate as intended and could negatively affect the Fund and its shareholders. The Subsidiary is not registered under the 1940 Act and is not subject to all the investor protections of the 1940 Act. Thus, the Fund, as an investor in the Subsidiary, will not have all the protections offered to investors in registered investment companies.
The Registrant (also, the “Trust”) is organized as a Delaware business trust is operated pursuant to an Amended and Restated Declaration of Trust, dated December 13, 2010 (the “Declaration of Trust”), that permits the Registrant to indemnify every person who is, or has been, a Trustee, officer, employee or agent of the Trust, including persons who serve at the request of the Trust as directors, trustees, officers, employees or agents of another organization in which the Trust has an interest as a shareholder, creditor or otherwise (hereinafter referred to as a “Covered Person”), shall be indemnified by the Trust to the fullest extent permitted by law against liability and against all expenses reasonably incurred or paid by him in connection with any claim, action, suit or proceeding in which he becomes involved as a party or otherwise by virtue of his being or having been such a Trustee, director, officer, employee or agent and against amounts paid or incurred by him in settlement thereof. This indemnification is subject to the following conditions:
The information herein represents the opinion of the author(s), but not necessarily those of VanEck, and these opinions may change at any time and from time to time. Non-VanEck proprietary information contained herein has been obtained from sources believed to be reliable, but not guaranteed. Not intended to be a forecast of future events, a guarantee of future results or investment advice. Historical performance is not indicative of future results. Current data may differ from data quoted. Any graphs shown herein are for illustrative purposes only. No part of this material may be reproduced in any form, or referred to in any other publication, without express written permission of VanEck.

Bitcoin futures promise more flexibility for investors and potentially a more stable price. Yet, there is a chance that volatility could increase in the interim and while strategies like shorting and using leverage hold a lot of potential when used within the right infrastructure, they can be detrimental to smaller investors and, in the worst case scenario, could derail the market in dangerous ways.
Swap agreements are generally traded in OTC markets and have only recently become subject to regulation by the CFTC. CFTC rules, however, do not cover all types of swap agreements. Investors, therefore, may not receive the protection of CFTC regulation or the statutory scheme of the Commodity Exchange Act in connection with a Fund’s swap agreements. The lack of regulation in these markets could expose investors to significant losses under certain circumstances, including in the event of trading abuses or financial failure by participants. Unlike in futures contracts, the counterparty to uncleared OTC swap agreements is generally a single bank or other financial institution, rather than a clearing organization backed by a group of financial institutions. As a result, the Fund is subject to increased counterparty risk with respect to the amount it expects to receive from counterparties to
•   Futures Position Limit Risk — Limits on the amount of futures any one entity can hold may negatively impact the Fund’s ability to meet its investment objective if such limits are reached and exceptions to such limits are not granted. Currently the position limits for bitcoin futures contracts are much lower than they are for most other futures contracts.
An Authorized Participant may place an order to purchase (or redeem) Creation Units (i) through the Continuous Net Settlement clearing processes of NSCC as such processes have been enhanced to effect purchases (and redemptions) of Creation Units, such processes being referred to herein as the “Clearing Process,” or (ii) outside the Clearing Process, though orders for Global Funds (as defined below) may not be placed through the Clearing Process. In either case, a purchase order for a Fund must be received by the following cut-off times (which may be earlier if the relevant Exchange or any relevant bond market closes early). In all cases purchase/redeem procedures are at the discretion of the Advisor and may be changed without notice.
In June 2015, the New York Department of Financial Services (the “NYDFS”) finalized a rule that requires most businesses involved in digital currency business activity in or involving New York, excluding merchants and consumers, to apply for a license (“BitLicense”) from the NYDFS and to comply with anti-money laundering, cyber security, consumer protection, and financial and reporting requirements, among others. As an alternative to the BitLicense in New York, firms can apply for a charter to become limited purpose trust companies qualified to engage in digital currency business activity. Other states have considered regimes similar to the BitLicense, or have required digital currency businesses to register with their states as money transmitters, such as Washington and Georgia, which results in digital currency businesses being subject to requirements similar to those of NYDFS’ BitLicense regime. Certain state regulators, such as the Texas Department of Banking, Kansas Office of the State Bank Commissioner and the Illinois Department of Financial and Professional Regulation, have found that mere transmission of bitcoin, without activities involving transmission of fiat currency, does not constitute money transmission requiring licensure. The North Carolina Commissioner of Banks has issued guidance providing that North Carolina’s money transmission regulations only apply to the transmission of digital currency and not its use. In June 2014, the State of California adopted legislation that would formally repeal laws that could be interpreted as making illegal the use of bitcoin or other digital assets as a means of payment. In July 2017, Delaware amended its General Corporation Law to provide for the creation maintenance of certain required records by blockchain technology and permit its use for electronic transmission of stockholder communications.
INTERACTIVE DATA MAKES NO EXPRESS OR IMPLIED WARRANTIES, AND HEREBY EXPRESSLY DISCLAIMS ALL WARRANTIES OF MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE WITH RESPECT TO ICE U.S. 7-10 YEAR BOND INDEX™ and ICE U.S. 20+ YEAR BOND INDEX™ OR ANY DATA INCLUDED THEREIN. IN NO EVENT SHALL INTERACTIVE DATA HAVE ANY LIABILITY FOR ANY SPECIAL, PUNITIVE, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES (INCLUDING LOST PROFITS), EVEN IF NOTIFIED OF THE POSSIBILITY OF SUCH DAMAGES.
A bitcoin exchange operates somewhat similarly to online stock trading brokers, where customers deposit their fiat currency (or bitcoins) to carry out trades. However, not all bitcoin exchanges offer such services. Some exchanges are more like wallets and thus provide limited trading options or storage of currency (both digital and fiat) for trading. The bigger and more elaborate exchanges offer trades between different cryptocurrencies, as well as between digital and fiat currencies. The number of currencies supported by an exchange varies from one exchange to another. (For more, see: Why Is Bitcoin’s Value So Volatile.)
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.
The Board has determined that its leadership structure is appropriate in light of the characteristics of the Trust and each of the Funds. These characteristics include, among other things, the fact that all Funds are organized under one Trust; all Funds are exchange-traded funds; all Funds have common service providers; and that the majority of Funds are geared funds, with similar principal investment strategies. As a result, the Board addresses governance and management issues that are often common to all or most of the Funds. In light of these characteristics, the Board has determined that a four-member Board, including three Independent

Futures markets create an immense amount of flexibility. They enable investors to readily bet on an asset or bet against it (go long or go short), and they are usually characterised by an immense amount of leverage. In the case of bitcoin, this means one can trade a high volume of coins while only paying for a fraction of them, essentially operating with borrowed money. Leverage is used to amplify profits on a small volume of assets, but it is a double-edged sword in that it also amplifies losses.
The Fund generally does not expect to invest directly in futures contracts, option contracts and swap agreements (“Bitcoin Instruments”). The Fund expects to gain exposure to these investments by investing a portion of its assets in the ProShares Cayman Bitcoin/Blockchain Strategy Portfolio, a wholly-owned subsidiary of the Fund organized under the laws of the Cayman Islands (the “Subsidiary”). The Subsidiary is advised by ProShare Advisors, the Fund’s investment advisor, and invests directly in Bitcoin Instruments. Unlike the Fund, the Subsidiary is not an investment company registered under the Investment Company Act of 1940, as amended (the “1940 Act”). The Fund’s investment in the Subsidiary is intended to provide the Fund with exposure to commodity markets related to bitcoin in accordance with applicable rules and regulations. The Fund will invest up to 25% of its total assets in the Subsidiary. Except as otherwise noted, references to the Fund’s investment strategies and risks include the investment strategies and risks of the Subsidiary.
  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.
Interestingly, the cryptocurrency market seems to rise and fall simultaneously with the altcoins. Is a systemic issue that causes this harmonious rise and fall of prices on the exchanges? The answer is a little fuzzy, but there are several factors at play. Most exchanges use Bitcoin as the universal trading currency, which leads to many investors buying and selling Bitcoin to buy and sell altcoins. When bitcoin starts a bull run, many of the altcoins fall, as investors jump on the Bitcoin train and vice versa. It’s also systemic because most exchanges require Bitcoin rather than fiat currency to transact. It is easy to invest fiat currency in the market and then leave there as an investor trades it; moving it from one currency to another and not cashing it back to fiat currency. Furthermore, When the Bitcoin price falls or rises against the fiat currency, all the altcoins will usually follow. This is because all altcoin prices are based on their Bitcoin exchange rate, not their fiat currency exchange rate. The value of an altcoin in fiat currency is the value of the altcoin in Bitcoin and then Bitcoin’s value in that fiat currency. It is Bitcoin that strongly affects pricing.
The biggest problem of the Blockchain is its reliance on miners. This is exactly why the cryptocurrency called IOTA (the Internet of Thigs Application) was created in 2016. IOTA also battles increasing transaction fees and network scalability. IOTA’s blockchain is called Tangle. It is a blockchain with no blocks and no chains. In this system, the users themselves are responsible for validating transactions. This means there’s no need for approval from miners; so users enjoy a fee-free transaction and an increased process speed.
that receive different proportions of the interest and principal distributions from a pool of mortgage assets. The Funds will only invest in SMBS whose mortgage assets are U.S. government obligations. A common type of SMBS will be structured so that one class receives some of the interest and most of the principal from the mortgage assets, while the other class receives most of the interest and the remainder of the principal. If the underlying mortgage assets experience greater than anticipated prepayments of principal, each Fund may fail to fully recoup its initial investment in these securities. The market value of any class that consists primarily or entirely of principal payments generally is unusually volatile in response to changes in interest rates.

fluctuations in the value of the foreign currency between the acquisition and disposition of the position also are treated as ordinary income or loss. In certain circumstances, a Fund may elect to treat foreign currency gain or loss attributable to a forward contract, a futures contract or an option as capital gain or loss. Furthermore, foreign currency gain or loss arising from certain types of section 1256 contracts is treated as capital gain or loss, although a Fund may elect to treat foreign currency gain or loss from such contracts as ordinary in character. These gains and losses, referred to under the Code as “section 988” gains or losses, increase or decrease the amount of a Fund’s investment company taxable income available (and required) to be distributed to its shareholders as ordinary income. If a Fund’s section 988 losses exceed other investment company taxable income during a taxable year, the Fund would not be able to make any ordinary dividend distributions, or distributions made before the losses were realized would be recharacterized as a return of capital to shareholders, rather than as ordinary dividends, thereby reducing each shareholder’s basis in his or her Fund Shares.
Michael L. Sapir, Co-Founder and Chief Executive Officer of ProShare Advisors since inception and ProFund Advisors LLC since April 1997. Mr. Sapir formerly practiced law, primarily representing financial institutions for over 13 years, most recently as a partner in a Washington, D.C.-based law firm. He holds degrees from Georgetown University Law Center (J.D.) and the University of Miami (M.B.A. and B.A.).
State the general effect of any contract, arrangements or statute under which any director, officer, underwriter or affiliated person of the registrant is insured or indemnified against any liability incurred in their official capacity, other than insurance provided by any director, officer, affiliated person, or underwriter for their own protection.
The consideration for purchase of a creation unit of a Fund may, at the discretion of the Advisor, consist of the in-kind deposit of a designated portfolio of securities (“Deposit Securities”) constituting a representation of the index for the Fund, the Balancing Amount, and the appropriate Transaction Fee (collectively, the “Portfolio Deposit”). The “Balancing Amount” will be the amount equal to the differential, if any, between the total aggregate market value of the Deposit Securities (or in the case of redemptions, the total aggregate market value of the Fund Securities as defined below) and the NAV of the Creation Units being purchased and will be paid to, or received from, the Trust after the NAV has been calculated. The Advisor may restrict purchases of Creation Units to be on an in-kind basis at any time and without prior notice, in all cases at the Advisor’s discretion.
These are NOT linked to or related in any way, to the futures contracts that trade on the CME or CBOE.  Not every article I have read makes this clear.  So the bright side of this story is that the contracts listed and traded on U.S. exchanges were not involved.  That is encouraging from both a regulatory aspect and for the future potential growth of cryptocurrency linked products in the U.S.
Cryptocurrencies are far more volatile than stocks and bonds, and the industry evolves rapidly. An altcoin that is popular today may not exist a month or a year from now. In other words, traders should consider the possibility of losing everything when they start trading. For this reason, you should put only a very small portion of your portfolio in this sector.
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.

RUSSELL DOES NOT GUARANTEE THE ACCURACY AND/OR THE COMPLETENESS OF THE RUSSELL INDEX OR ANY DATA INCLUDED THEREIN AND RUSSELL SHALL HAVE NO LIABILITY FOR ANY ERRORS, OMISSIONS, OR INTERRUPTIONS THEREIN. RUSSELL MAKES NO WARRANTY, EXPRESS OR IMPLIED, AS TO RESULTS TO BE OBTAINED BY PROSHARES TRUST, INVESTORS, FUND SHAREHOLDERS, OR ANY OTHER PERSON OR ENTITY FROM THE USE OF THE RUSSELL INDEX OR ANY DATA INCLUDED THEREIN. RUSSELL MAKES NO EXPRESS OR IMPLIED WARRANTIES, AND EXPRESSLY DISCLAIMS ALL WARRANTIES OF MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE OR USE WITH RESPECT TO THE RUSSELL INDEX OR ANY DATA INCLUDED THEREIN. WITHOUT LIMITING ANY OF THE FOREGOING, IN NO EVENT SHALL RUSSELL HAVE ANY LIABILITY FOR ANY SPECIAL, PUNITIVE, INDIRECT, OR CONSEQUENTIAL DAMAGES (INCLUDING LOST PROFITS), EVEN IF NOTIFIED OF THE POSSIBILITY OF SUCH DAMAGES.
Important agents interacting with those prices are operating in one of three roles: individual speculator, market maker, or arbitrageur. A key role is market maker—a firm that has agreed to simultaneously act as both a buyer and seller for a specific security. When companies sign up for this role they agree to keep the bid/ask prices relatively close to each other—for example even if they aren’t keen on selling Bitcoins at the moment they can’t just set the ask price to an outrageous level. The agreed-upon maximum bid/ask ranges might be tied to market conditions (e.g., wider when deemed a “fast market”) and might allow time-outs but in general, the market maker agrees to act as a buffer between supply and demand.
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