Forex for a trader
Otc forex brokers

Otc forex brokersBest Options Brokers for OTC Options. On this page we have provided some advice for choosing listed our recommended brokers for any trader looking to buy and sell over the counter (OTC) contracts. We have researched and tested many online brokers, and produced a list of those that we believe are the best for trading contracts of this type. You can see our recommendations in the table below. If you are a Ђњtrade at homeЂќ options trader then the chances are very high that you stick mostly to buying and selling exchange traded options and avoid those that are traded over the counter. This is probably for the best as, for the most part, it's much more straightforward to trade those contracts which are listed on the formal exchanges. There may well be some reasons why you prefer to trade OTC contracts though and this isn't necessarily something that you should absolutely avoid (although we donЂ™t recommend beginners get involved). If you do, then you really need to make sure you use an appropriate broker. Although you can trade OTC contracts at most brokers, they aren't all ideal for trades of this type. In fact, even some of the very best brokers aren't actually that great for trading OTC options, so you need to look for those that are particularly suitable. In our opinion, it's those that we have listed above. About Trading OTC Options. Trading OTC contracts is really something that only investors with experience should consider. Unlike the standardized contracts that you can buy and sell on organized exchanges, OTC contracts are completely customizable.

This presents some advantages, as you can effectively design your own contracts to fit in with your investment strategy. There are also some additional risks too though. For one thing you don't have the protection of an exchange or clearing house; you are reliant on the counterparty to your contracts fulfilling their obligations. There are so many opportunities for trading the standardized contracts available on the exchanges that you really donЂ™t need to get involved with OTC options unless you have very specific reasons to do so. They do allow you to be a bit more creative but, in our opinion, there are enough risks involved in trading already without adding any more unnecessarily. We rank the best brokers in a variety of different categories, purely for the reason that who might be the right broker for one trader is not necessarily the right broker for another. This is certainly true for a trader looking to trade OTC options, as there are many brokers that are really not focused on this area at all. When we are ranking brokers we take several different factors into consideration. Certain factors are relevant for every category that we cover, with varying degrees of importance, while some are only relevant to specific categories. When it comes to brokers suitable for trading OTC options, it is the following factors that we look particularly closely at: Ease of Placing OTC Orders Cost of Transactions Online Buying Restrictions Quality of Customer Support. Ease of Placing OTC Orders. This is important for fairly obvious reasons. Even some of the best trading platforms available aren't particularly great for placing OTC orders, and if this is going to be something that you do with any degree of regularity then clearly this can lead to frustration. Ideally you want it to be as easy as possible to place all your orders, so this is something that has a significant impact on how we rank brokers in this category.

Cost of Transactions. The costs of making transactions are relevant no matter what category we are ranking brokers for. The reason they are especially important for trading OTC options is that some brokers charge particularly high fees for buying and selling contracts of this type. While you need to be prepared for paying some additional costs to trade contracts over the counter, you obviously donЂ™t want to be paying any more than you have to. Therefore the fees and commissions for placing orders involving OTC contracts is a key factor to consider. Online Buying Restrictions. Some online brokers place restrictions on what transactions can be carried out over the internet. These restrictions will very often include certain types of OTC contracts. Although the restrictions donЂ™t necessarily mean you wonЂ™t be able to make the transactions you want, they mean you may not be able to make them online. One of the major advantages of using an online broker is that you can place your orders with maximum convenience, without having to use the phone or some other method. Therefore any broker that places heavy restrictions on what sort of transactions you can make over the internet is unlikely to be a great choice, particularly when trading OTC options. Quality of Customer Support. This is another factor that is relevant for all the categories we put brokers in. It is, however, particularly relevant in this category.

This is because transactions involving OTC options contracts can be somewhat more complicated than those involving standardized options contracts. You really need to be able to rely on decent customer support in the event that there are issues with your transactions that you need assistance with. Trading OTC options is different in many ways to trading the standardized contracts that are bought and sold on the exchanges. We would advise beginners to avoid getting involved but there are some positive reasons for doing so for those that have some experience behind them. There are some key considerations you need to take into account if you are going down the OTC route though. One such consideration is which broker you are going to use. As we have explained it's important to choose a broker that is good at handling the kind of transactions you will be looking to make. If you are looking to deal with OTC options then we do very strongly suggest that you use the brokers we have listed on this page, as they are definitely the most suitable in our opinion. GAIN Capital provides a whole range of options and trading solutions. More options for trading options. OTC options are a versatile, complimentary product to spot forex and CFDs that allow you to trade in any market climate, regardless of low or high volatility. Many traders use options to hedge their forex and CFD positions, diversify their portfolio or trade when the markets are relatively flat. GAIN Capital provides a range of OTC options to trade* on major indices, commodities and FX pairs , and solutions for you to provide options to your customers.

Introduce your customers to options & earn as they trade. Introduce your customers to options trading with GAIN Capital and earn as they trade through our transparent and trusted introducing broker program. Offer options trading under your own brand. We make it easy for you to offer competitive options pricing to your customers under your own brand, with our flexible turn-key white label solutions. Access options liquidity via API. Provide access to your customers via API and major MT4 bridge providers. Online options trading. Tight spreads and deep liquidity available through our platforms and optimised apps for smartphone and tablet. *Some products and services may not be available in all jurisdictions or to all clients. In general, the foreign exchange market has no centralized exchange, although futures on some currency pairs are traded on major exchanges like the Chicago International Monetary Market or IMM in the United States. The sections below will cover the primary means of trading in the forex market. The Over the Counter or OTC Forex Market.

Instead of trading primarily via a central marketplace, the foreign exchange market sees the largest amount of trading volume go through a network of forex traders operating in the so-called “over the counter” or OTC market. These professional traders usually work for major international banks who deal with each other based on credit lines that these financial institutions extend among themselves in the interbank forex market. They traditionally connected with each other to deal currencies via telephones, direct phone lines or voice brokers. In the more modern electronic era, the interbank market increasingly uses electronic networks like Reuters Dealing 3000 Spot Matching or Electronic Broking Services’ (EBS) Spot Dealing system to trade forex. The OTC market also includes customers of these financial institutions, who often include major corporations, hedge funds, central banks, and high net worth individuals whose usual transaction. These clients usually deal over the telephone by contacting the customer dealing desk of the bank. They will often be assigned to a particular forex advisor working on that dealing desk who may call or even visit the client to provide timely market commentary or tailored hedging advice. This OTC forex market generally functions in an orderly fashion, providing sufficient liquidity for most commercial transactions. The market also offers relatively tight dealing spreads under most conditions, with the most common exception being right after major news announcements or economic data releases as the new information is being discounted by market makers. Another interesting feature of the OTC forex market is the fact that it maintains its high degree of liquidity despite being virtually unregulated. The relative freedom of the huge forex market demonstrates how people acting in their own best interests can result in an orderly financial market under most operating situations. Online Forex Trading. The relatively recent rise of the Internet has provided an opportunity for forex brokers to provide pricing on a variety of liquid currency pairs electronically to individual customers who wish to deal forex in smaller amounts of usually less than one million U. S. Dollars. Rather than trading on credit, these individuals usually place a certain amount of cash as margin in their trading accounts with such brokers in order to be able to take leveraged trading positions in the forex market. Most of the personal traders using online forex brokers do so in order to speculate on exchange rate movements for the potential profits they hope to earn.

They also generally use electronic forex platforms connected to the Internet via their personal computers in order to execute forex deals. The Currency Futures Market. Before online forex trading provided access to currency trading for individuals, a number of smaller speculators traded currency futures on a limited number of currency pairs on exchanges. For example, currency futures and options on currency futures are actively traded on the Chicago International Monetary Market or IMM in the United States. Risk Statement: Trading Foreign Exchange on margin carries a high level of risk and may not be suitable for all investors. The possibility exists that you could lose more than your initial deposit. The high degree of leverage can work against you as well as for you. Forex Options Trading Brokers. A forex exchange option (also called FX option or currency option) is a derivative financial instrument that gives its owner the right to exchange money from one currency to another at a pre-set exchange rate on a particular date (the option owner is not obliged to take advantage of this right). Let's see how this look in a practical example: a GBPUSD contract for example gives its owner the right to sell ?100,000 and buy $200,000 on May 1. The pre-set exchange rate here is 2.000 and the notional amounts that could be exchanged are ?100,000 and $200,000. If the actual exchange rate on May 1 is 1.900 for example, the FX option is exercised letting its owner sell GBP at 2.000 and buy GBP immediately on the spot market, making a profit in the process.

This is why there are a few things you need to look for when shopping for a forex options trading broker: - Competitive commission rate for your forex transactions. - Reliable online trading platform to execute your forex options trading. - Real-time rates, charting and research tools to help you make the right investment decisions. Below is a list of OTC Forex Options Brokers. If you are looking for exchange traded forex options, check Interactive Brokers, Charles Schwab or Thinkorwim. Forex Options Trading Brokers. Binary Options vs Digital Options. The binary options industry continues moving forward. One of the rather new products which is available are the so called “digital options”. Though they may appear similar in nature to the classic binary options, there are several differences worth pointing out. Read more.

PFSOFT adds options trading modul to Protrader platform. PFSOFT, a broker neutral software developer based in Ukraine, today announced the addition of a options trading functionality to Protrader, its multi-asset trading platform. The new modul, allowing users to trade options along with forex, stocks and futures, is named Option Master. Read more. PFSOFT adds options trading modul to Protrader platform. PFSOFT, a broker neutral software developer based in Ukraine, today announced the addition of a options trading functionality to Protrader, its multi-asset trading platform. The new modul, allowing users to trade options along with forex, stocks and futures, is named Option Master. Read more. Moscow Exchange Introduces New Volatility Index. Lately, whenever the talk is about on-exchange or over-the-counter trading in Russia, one key word pops up: “Volatility”. Read more. Saxo Bank Continues Yuan Push, Launches USDCNH Options. Danish bank and Forex broker Saxo Bank does not know how to stop when it comes to introducing new trading products and once it started that push into trading with the Chinese Yuan, it has not stepped on the brakes.

Read more. Latest forex brokers. Forex trading carries a high level of risk and may not be suitable for all investors. Before you engage in trading foreign exchange, please make yourself acquainted with its specifics and all the risks associated with it. All information on ForexBrokerz. com is only published for general information purposes. We do not present any guarantees for the accuracy and reliability of this information. Any action you take upon the information you find on this website is strictly at your own risk and we will not be liable for any losses andor damages in connection with the use of our website. COPYRIGHT. All textual content on ForexBrokerz. com is copyrighted and protected under intellectual property law. You may not reproduce, distribute, publish or broadcast any piece of the website without indicating us as a source. ForexBrokerz. com does not claim copyright over the imagery used on the website, including brokers' logos, stock images and illustrations. Forexbrokerz website uses cookies.

By continuing to browse the site you are agreeing to our use of cookies. Read our Privacy Policy. Understanding the Over the Counter Trading or OTC in Forex Market. Most of us trading in the forex market know that transactions happen over the counter, but generally we are so engrossed in getting our individual trade right that we have very little patience to understand the mechanics of the market and how trade happens in the Over the Counter format. You might be feeling how does it matter as long as my profits are in place? Well, I would say that overlooking the inherent structure of any market might eat into your profits too. The structure of the forex market is a crucial element that can help you design your trading day and help you strategize better. The way in which the currency pairs are traded in the forex market is the most important element that goes on to make the basics of the currency market globally. This is crucial as it has a direct bearing on the participants who get into this trade, the regulations governing them as well as the overall size of the forex market. What Is Over The Counter Trading? So what do you understand when it is said that price action in the forex market is conducted over the counter? Well, let’s begin with a simpler analogy. I am sure all of you understand what over the counter drugs are. You can simply walk to the drug store, ask for these OTC medicines without any specific prescription or medical history. The same theory applies here. Trading in the forex market is not channelized via any centralized exchange like you have in equity trade. All the different types of forex products that traders or investors trade in is always via market medium or a market maker.

This is commonly a bank or a forex brokerage firm that helps in facilitating your desired trade and help you in buying and selling specific quotes from customers and taking orders from them. Unlike an exchange traded transaction, where the exchange is the trading counter-party, the brokerage firm or the bank that is enabling the trade becomes the counter-party. As the market place is not regulated strictly by any single governing body, prices are market determined, and there is generally heavy competition and prices keep varying as per the market forces. There is no standardized pricing, and the demand and supply dynamics keep on interfering with the live prices. Execution too varies as per demand. So the key feature of OTC in forex market includes: Absence of any centralized exchange system to regulate trade No standardized pricing system and prices dependant on market dynamics State of art networking to connect traders globally and enable long and short distance transaction through the simple click of the mouse Presence of an inter-bank market, essentially the tie up between banks that is a key catalyst for forex trade. The inter-bank market is crucial as it brings forth the essential liquidity and efficiency in these over the counter trades. How Is The Forex OTC Trade Different From Stock Market? Well, this might be the first question that comes to your mind that while the stock markets function equally efficiently, they have set exchanges for conducting trade, be it the NYSE or the Nasdaq. So how is this OTC trade different and why do you need such a decentralized system for the forex market? For that first and foremost, we must understand the dynamics of the forex market. It is a global forum providing trading platform to traders across the world in one go. Needless to mention then that the volumes and the liquidity levels in the forex market are huge compared to any equity market.

The daily turnover of the forex market exceeds $3 trillion. Now compare this to the combined volume of equity markets across the world. That still is pegged around a miniscule part of this amount at $30 billion. Thus, the essential construct of this market ensures that a more free flowing system with higher degree of efficiency is required. This is where the OTC trading concept comes to play. As trade is global, regulations of any specific country or any centralized authority does not dictate the dynamics of trade. Unlike equity market, transaction cost is lower as this system has also alleviated the need for any fees for exchange and clearing. Trade as I mentioned is solely by the electronic medium hence the efficiencies are way higher despite a significantly lower cost. Another advantage of the forex market over stocks is the direct dealing between traders and the market makers like the banks. There is absolutely no need for any middle man. Trade is also not time bound by any geographical or other limitation. The OTC spot forex market is a 24-hour trading profit nearing machine. Traders can access the market anytime they want and tweak their trades in accordance to developing economic and geopolitical changes globally. Not just that you can execute your trade from the comfort of your bedroom. Everything is via the electronic medium and a strong global trading network. So unlike a stock market trader, you do not have to give up everything to trade in the forex market.

One can easily maintain their day jobscollegeclasses or any other unavoidable engagement and then trade during your leisure time in the evening, at night or in transit. You can even double up as a stock market as well as a forex market player. In your free time or in between breaks from the stock markets, you could easily dabble in the Over The Counter forex market. Speed is another hallmark of the Over The Counter Trade. While order submissions and order executions could be time-consuming, the OTC trade in forex market ensures that all transactions are quick, easy to execute and instantly applicable. Depending on the market condition you can exit and enter at will. Products Used In OTC Forex Trade. Some of the key products used for trading via Over The Counter transaction in the forex market include: Spot forex Forwards trade Forex Options Forex Swaps. There can be various other permutation and combinations of these while the actual trade is executed but essentially these constitute the primary ingredients of the OTC forex market broth. The Main Players in OTC Forex Market. Well, after the products, it is about the players. Right at the top we have the top money dealers including, Leading foreign exchange dealers All the major global banks like Goldman Sachs, HSBC, JPMOrgan and the like. Almost 60-70% of the daily forex market trade is handled by these banks through the complex inter-bank market.

These banks are instrumental in setting the currency rates, managing demand-supply dynamics and overall trading volume. The next sub-group of the leading forex market players using the OTC channel includes both financial as well as retail participants. Even hedge funds, pension funds, MFs and other high networth investors have a significant stake in the final OTC forex market pie. The forex market brokers complete this circle and form an essential link with the retail users, the liquidity providers and also act as the intermediary buyerssellers. To draw to a close, the OTC forex market is expanding by leap sand bounds. Industry experts peg the growth at exponential rate encouraged by recent studies that indicated that nearly 85% of US investors preferred the OTC format of trading and transaction. The efficiency and the free flowing structure is what attract maximum traders to it. Must mention that ease of use is another big thumbs up. Just before you go, did you check This System? Make sure to do it now, otherwise you will regret. What is 'Over-The-Counter - OTC' Over-the-counter (OTC) is a security traded in some context other than on a formal exchange such as the New York Stock Exchange (NYSE), Toronto Stock Exchange or the NYSE MKT, formerly known as the American Stock Exchange (AMEX). The phrase "over-the-counter" can be used to refer to stocks that trade via a dealer network as opposed to on a centralized exchange. It also refers to debt securities and other financial instruments, such as derivatives, which are traded through a dealer network. Interdealer Quotation System. Over-the-Counter Exchange of India . BREAKING DOWN 'Over-The-Counter - OTC' For many investors, there is little practical difference between OTC and major exchanges. Improvements in electronic quotation and trading have facilitated higher liquidity and better information. However, there are key differences between the transaction mediums.

On an exchange, every party is exposed to offers by every other counterparty, which may not be the case in dealer networks. There is less transparency and less stringent regulation on these exchange," so unsophisticated investors take on additional risk and could be subject to adverse conditions. Popular OTC Networks. The OTC Markets Group operates some of the most well-known networks, such as the OTCQX Best Market, the OTCQB Venture Market and the Pink Open Market. These markets include unlisted stocks that are known to trade on the Over the Counter Bulletin Board (OTCBB) or on the pink sheets. Although Nasdaq operates as a dealer network, Nasdaq stocks are generally not classified as OTC because the Nasdaq is considered a stock exchange. Conversely, OTCBB stocks are often either penny stocks or are offered by companies with bad credit records. The OTCQX Best Market includes securities of companies that have the largest market caps and greater liquidity than the other markets. The OTCBB trades stocks that are small and developing, and that report to regulators. Pink sheets stocks come in a wide variety. Securities on OTC Networks. Stocks are usually traded OTC because the company is small and cannot meet exchange listing requirements. Also known as unlisted stock, these securities are traded by broker-dealers who negotiate directly with one another over computer networks and by phone.

The dealers act as market makers, and the OTC Bulletin Board is an inter-dealer quotation system that provides trading information. Some well-known large companies are listed on the OTC markets. For instance, the OTCQX trades Allianz, BASF, Roche and Danone. American depository receipts, which represent shares in an equity that is traded on a foreign exchange, are often traded OTC, because the underlying company does not wish to meet the stringent exchange requirements. Instruments such as bonds do not trade on a formal exchange and are also considered OTC securities. Most debt instruments are traded by investment banks making markets for specific issues. An investor must call the bank that makes the market in that bond and asks for quotes to buy or sell a bond. Complete information on Forex market and trading in general, including education on trading systems, market analysis, technical and fundamental analysis, binary options and Forex and binary options brokers among other. Over The Counter Markets (OTC) Over The Counter trading refers to financial instruments negociation on a different context than organized financial markets or exchanges. The term OTC trading or OTC market can be used for contracts on financial instruments made directly between two parties and also for trading with derivative financial instruments traded through a dealer and not through a centralized market (such as the stock exhange). For example, a futures contract is a standardized product traded in the futures market while a forward contract is an OTC product. Usually, when it refers to stocks, if a stock is traded at a Over The Counter context, this is usually because the company is small and does not meet the requirements for being listed in a regular stock exchange such as NASDAQ or NYSE. These stocks of companies that are not publicly traded are traded through brokers or dealers who negotiate directly between the investor and the company through computer networks or telephone. Most bond and financial instruments debt are not traded on organized and standardized markets and therefore are considered OTC instruments.

For example most bonds are sold through banks, so if an investor wants to buy a particular bond them should go directly to the bank concerned which sell the bond and negotiate directly with it out of a standard market. OTC contracts that occur in these negotiations are bilateral contracts that contain the agreement on the settlement of the instrument to which the two parties have reached. Most OTC contracts are made through banks and financial investment companies. There are also negotiating frameworks of OTC derivatives that are often included in these contracts such as the rules of the International Swaps and Derivatives Associaton (ISDA) or, in Spain, the CMOF contract. US Search Mobile Web. Welcome to the Yahoo Search forum! We’d love to hear your ideas on how to improve Yahoo Search . The Yahoo product feedback forum now requires a valid Yahoo ID and password to participate. You are now required to sign-in using your Yahoo email account in order to provide us with feedback and to submit votes and comments to existing ideas. If you do not have a Yahoo ID or the password to your Yahoo ID, please sign-up for a new account. If you have a valid Yahoo ID and password, follow these steps if you would like to remove your posts, comments, votes, andor profile from the Yahoo product feedback forum. Gain access to the global markets with the reassurance of trading with a market leader committed to providing a world class trading experience. Our affiliate Forex.

com is a leading online trading specialist in forex and CFDs providing competitive pricing, exceptional execution, and cutting edge trading platforms to institutional and professional traders. FOREX. com leads the industry in aligning their interests with those of their customers, providing ultra-competitive pricing, greater market transparency, and quality trade executions more consistently than anyone else. As a global market leader, FOREX. com has supported over 300,000 traders in 180 countries globally. GAIN Capital's award winning proprietary trading platform, offers access to advanced charting tools, automated strategies, exclusive commentary and insights from FOREX. com's global research team and complete mobile trading solutions. GAIN Capital's custom built version of the popular MetaTrader 4 platform offers all of the advanced features of MT4 plus integrated advanced order management tools, 1-click trading, news and research from FOREX. com's global research team. Gain Capital Group, LLC makes no investment recommendations and does not provide financial, tax or legal advice. Products and services intended for U. S. customers and may not be available or offered in other jurisdictions. Therefore, before deciding to participate in the commodity futures market, you should carefully consider your investment objectives, level of experience and risk appetite. Most importantly, do not invest money you cannot afford to lose. Futures, options on futures and forex trading involves substantial risk and is not appropriate for all investors.

Spot Gold and Silver contracts are not subject to regulation under the U. S. Commodity Exchange Act. Increasing leverage increases risk. Online trading has inherent risk due to system response and access times that may vary due to market conditions, system performance, volume and other factors. A trader should understand these and additional risks before trading. Please read Characteristics and Risks of Standardized Options or available by calling 800-920-5808 or 614-792-2690. * GAIN Trader has no monthly subscription or transactional technology costs. Standard commission, exchange, and NFA fees apply. GAIN Capital Group, LLC is a registered FCM and RFED with the CFTC and member of the National Futures Association (NFA #0339826). W. W. Norton’s paperback edition of Dry Bones in the Valley is available in the US as of April 6, 2015. It will fit in a large pocket and is suitable for travel, reading, swatting insects, and other uses. Links to retailers can be found on the book page. This past weekend I attended the Los Angeles Times Book Prizes and Festival. By day, jacaranda trees were in bloom; I’d never seen trees that purple before.

Saturday night, will wonderments never cease under the stars of heaven, Dry Bones in the Valley took the prize in the MysteryThriller category. At the ceremony, the UCF string quartet played the winners on and off the stage. I don’t usually crow about the book on this particular page, but hey, it felt and still feels just as strange and dreamlike as anything else … Sky Before Painting of Sky. “For those of us who write poetry, Stanley Kunitz’s life and his work remind us that although we have been born into an unkind world that tells us to be hard and separate, it is our calling to dance for the joy of survival on the edge of the road. We must have faith that we will change, and yet we must remain modest. Poetry is a necessary and natural phenomenon, neither superior to the work of the tortoise beetle larva nor less wonderful. We must choose love before love story, sky before painting of sky, gentian blossoms before poem, even though those these choices might lead to heartbreak. We must be kind. We must be present. Kunitz reminds us not to neglect the humble life that dies into our poems, and is no less blazingly luminous for being ordinary.

” - from “I Dance for the Joy of Surviving: Stanley Kunitz’s Meditations on the Writing Life” by Dante Di Stefano. Writer’s Chronicle, September 2014. Check out the cover on Faber & Faber’s edition (UK). “One bright moonlit night, as one of the sons of the farmer who lived at LLwyn On in Nant y Bettws was going to pay his addresses to a girl at Clogwyn y Gwin, he beheld the Tylwyth Teg enjoying themselves in full swing on a meadow close to Cwellyn Lake. He approached them, and little by little he was led on by the enchanting sweetness of their music and the liveliness of their playing until he had got within their circle. Soon some kind of spell passed over him, so that he lost his knowledge of the place, and found himself in a country, the most beautiful he had ever seen, where everybody spent his time in mirth and rejoicing. He had been there seven years, and yet it seemed to him but a night’s dream; but a faint recollection come to his mind of the business on which he had left home, and he felt a longing to see his beloved one. So he went and asked permission to return home, which was granted him, together with a host of attendants to lead him to his country; and, suddenly, he found himself, as if waking from a dream, on the bank where he had seen the fair family amusing themselves. He turned towards home, but there he found everything changed: his parents were dead, his brothers could not recognize him, and his sweetheart was married to another man. In consequence of such changes he died broken-hearted in less than a week after coming back.” –As told to John Rhys, author of Celtic Folklore, Welsh & Manx, Volume One (1901)



Articles:

  • Otc forex brokers