NYSE vs. Nasdaq - can I tell what exchange a ticker traded on, based solely on the ticker?
"You cannot determine this solely by the ticker length. However, there are some conventions that may help steer you there. Nasdaq has 2-4 base letters BATS has 4 base letters NYSE equity securities have 1-4 base letters. NYSE Mkt (formerly Amex) have 1-4 base letters. NYSE Arca has 4 base letters OTC has 4 base letters. Security types other than equities may have additional letters added, and each exchange (and data vendors) have different conventions for how this is handled. So if you see ""T"" for a US-listed security it would be only be either NASDAQ, NYSE or NYSE Mkt. If you see ""ANET"" then you cannot tell which exchange it is listed on.  (In this case, ANET Arista Networks is actually a NYSE stock). For some non-equity security types, such as hybrids, and debt instruments, some exchanges add ""P"" to the end for ""preferreds"" (Nasdaq and OTC) and NYSE/NYSE Mkt have a variety of methods (including not adding anything) to the ticker.  Examples include NYSE:TFG, NYSEMkt:IPB, Nasdaaq: AGNCP, Nasdaq:OXLCN.  It all becomes rather confusing given the changes in conventions over the years. Essentially, you require data that provides you with ticker, listing location and security type. The exchanges allocate security tickers in conjunction with the SEC so there are no overlaps.  eg. The same ticker cannot represent two different securities. However, tickers can be re-used.  For example, the ticker AB has been used by the following companies:" "Things are in fact more complicated. It really depends what you mean by ""ticker"" and who gave you this ticker. There is several codes to identify a security: The Bloomberg code contains a code to identify the exchange as in ALU:FP the FP part refers to Euronext Paris. The RIC code works the same way but with a different convention. Exchanges are identified by the MIC code.(they are in fact divided in market segments with each market segment having a main market segment) ISIN and SEDOL codes do not provide informations about the exchange so they are usually given with a MIC. There is no guarantee that Reuters and Bloomberg won't use the same company code to refer to different company.  But they usually use the exchange ticker. This ticker is requested by each company and can be anything. They are accepted most of the time. But sometimes to avoid confusion some requests are rejected. (For instance FBI ticker was refused) For more info read: The evolution of ticker symbols Financial providers like Bloomberg provides services to be informed when a security is added/removed from a market."
The missing information is at the end of the first line: the price is from NASDAQ (most specifically Nasdaq Global Select), which is a stock exchange in the USA, so the price is in US Dollars. "Depends. The short answer is yes; HSBC, for instance, based in New York, is listed on both the LSE and NYSE. Toyota's listed on the TSE and NYSE. There are many ways to do this; both of the above examples are the result of a corporation owning a subsidiary in a foreign country by the same name (a holding company), which sells its own stock on the local market. The home corporation owns the majority holdings of the subsidiary, and issues its own stock on its ""home country's"" exchange. It is also possible for the same company to list shares of the same ""pool"" of stock on two different exchanges (the foreign exchange usually lists the stock in the corporation's home currency and the share prices are near-identical), or for a company to sell different portions of itself on different exchanges. However, these are much rarer; for tax liability and other cost purposes it's usually easier to keep American monies in America and Japanese monies in Japan by setting up two ""copies"" of yourself with one owning the other, and move money around between companies as necessary. Shares of one issue of one company's stock, on one exchange, are the same price regardless of where in the world you place a buy order from. However, that doesn't necessarily mean you'll pay the same actual value of currency for the stock. First off, you buy the stock in the listed currency, which means buying dollars (or Yen or Euros or GBP) with both a fluctuating exchange rate between currencies and a broker's fee (one of those cost savings that make it a good idea to charter subsidiaries; could you imagine millions a day in car sales moving from American dealers to Toyota of Japan, converted from USD to Yen, with a FOREX commission to be paid?). Second, you'll pay the stock broker a commission, and he may charge different rates for different exchanges that are cheaper or more costly for him to do business in (he might need a trader on the floor at each exchange or contract with a foreign broker for a cut of the commission)." There isn't a single universal way to reference a stock, there are 4 major identifiers with many different flavours of exchange ticker (see xkcd:Standards) I believe CUSIPs and ISINs represent a specific security rather than a specific listed instrument. This means you can have two listed instruments with one ISIN but different SEDOLs because they are listed in different places. The difference is subtle but causes problems with settlement Specifically on your question (sorry I got sidetracked) take a look at  CQS Symbol convention to see what everything means "You might consider learning how the ""matching"" or ""pairing"" system in the market operates.  The actual exchange only happens when both a buyer and a seller overlap their respect quotes.   Sometimes orders ""go to market"" for a particular volume.  Eg get me 10,000 Microsoft shares now.  which means that the price starts at the current lowest seller, and works up the price list until the volume is met.  Like all market it trades, it has it's advantages, and it's dangers.  If you are confident Microsoft is going to bull, you want those shares now, confident you'll recoup the cost.  Where if you put in a priced order, you might get only none or some shares. Same as when you sell.  If you see the price (which is the price of the last completed ""successful"" trade.  and think ""I'm going to sell 1000 shares"". then you give the order to the market (or broker), and then the same as what happened as before.  the highest bidder gets as much as they asked for, if there's still shares left over, they go to the next bidder, and so on down the price... and the last completed ""successful"" trade is when your last sale is made at the lowest price of your batch. If you're selling, and selling 100,000 shares. And the highest bidder wants 1,000,000 shares you'll only see the price drop to that guys bid.  Why will it drop (off the quoted price?).  Because the quoted price is the LAST sale, clearly if there's someone still with an open bid on the market...then either he wants more shares than were available (the price stays same), or his bid wasn't as high as the last bid (so when you sale goes through, it will be at the price he's offering).   Which is why being able to see the price queues is important on large traders. It is also why it can be important put stops and limits on your trades, een through you can still get gapped if you're unlucky.  However putting prices (""Open Orders"" vs ""(at)Market Orders"") can mean that you're sitting there waiting for a bounce/spike while the action is all going on without you). safer but not as much gain (maybe ;) ) that's the excitement of the market, for every option there's advantages...and risks... (eg missing out) There are also issues with stock movement, shadowing, and stop hunting, which can influence the price. But the stuff in the long paragraphs is the technical reasons." It depends on what site you're looking on and what exchange they're pulling the data from. Even though funds and stocks are called the same thing, they have different ticker symbols in each country's exchange or could be traded as pink sheet stocks in the US. If a company or fund is based in another country (like Canada or the UK) they probably also trade on that country's exchange (Toronto or London) under a different symbol. This can cause a lot of confusion when researching these tickers. The NYSE is not the only exchange in the world (or even the only one in the USA). Amazingly, the London stock exchange works on London time, the Shanghai exchange works on Shanghai time and the Australian stock exchange works on Sydney time. In addition futures exchanges work overnight. I don't see it in any of the exchange feeds I've gone through, including the SIPs. Not sure if there's something wrong with Nasdaq Last Sale (I don't have that feed) but it should be putting out the exact same data as ITCH. It depends on the way you have directed the order and the execution agreement you have signed with your broker. In case of DMA (direct market access) you would direct your order to the specific exchange - and that exchange would post your offer, assuming you did not tag it as hidden. However, if you just gave your order to the broker (be it via telephone, email or even online), they may not have to display your order to the market or chose which exchange to sell it on. It will also depend where the stock is listed. For most US listed and OTC stocks, regulation NMS applies where your order should have been executed against if it went to the exchanges. Check your account opening docs and agreements, particulary the execution agreement. In there it will tell you how your order should be treated. In case where the broker stipulates that you have DMA or that they will direct your order to Lit markets (public exchanges and not market making firms and dark-pools) then you may have a case - you would need to request information to whcih exchange your broker sent the order to. In case that you gave them discretion on routing of your order - read the fine print. The answer lies there. Regarding NBBO missing you quote as quantycuenta suggested above is also a possibility, however Reg NMS should take care of this. Do you have stock and date & time of your order? Say a stock is listed in Nasdaq, and the same company has a stock listed in Tsx. Does the Nasdaq price affect the Tsx price as trading commences? Not directly. Basically, an exchange is a market, and the price is defined only by supply and demand in that market. However, any substantial price differential for a commodity traded in multiple market creates an arbitrage opportunity, and there are many traders whose job it is exactly to find and use such opportunities. Their activity in turn has the effect of reducing the price differentials to the point where transaction costs make them unprofitable. With high-frequency traders around, the time for a price differential to disappear is nowadays measured in milliseconds. If a trader buys from one exchange, will it affect the price of the other? Only through the mechanism mentioned above.  Are there any benefits to being listed in two exchanges? It increases the liquidity of a stock. Assuming the data you're referring to is this line: the difference might be related to the different exchanges on which the stock trades.  FINRA could be listing the reported volume from one exchange, while the NASDAQ data might be listing the volume on all exchanges. This is an important distinction because AAV is a Canadian company that is listed on the Toronto Stock Exchange and the NYSE. The Q at the end of the line stands for NASDAQ, according to FINRA's codebook for those data. My guess is that the FINRA data is only reporting the volume for the NASDAQ exchange and not the total volume for all exchanges (Toronto, NASDAQ, NYSE, etc.) while the data straight from NASDAQ, oddly enough, is reporting the total volume. However, FINRA could also face reporting discrepancies, since it's a regulatory body and therefore might not have the most up-to-date volume data that the various exchanges can access.  I don't know if it's related or not, but looking at the NASDAQ historical data, it looks like the volume on March 6, the day you're asking about, was much lower than the volume in most of the days immediately before or after it. For all I know, something might have happened that day concerning that particular stock or the market as a whole. I don't remember anything in particular, but you never know. Wikipedia is your friend: http://en.wikipedia.org/wiki/List_of_stock_exchanges "In the US there is only one stock market (ignoring penny stocks) and handfuls of different exchanges behind it.  NYSE and NASDAQ are two different exchanges, but all the products you can buy on one can also be bought on the other; i.e. they are all the same market.  So a US equities broker cannot possibly restrict access to any ""markets"" in the US because there is only one. (Interestingly, it is commonplace for US equity brokers to cheat their customers by using only exchanges where they -- the brokers -- get the best deals, even if it means your order is not executed as quickly or cheaply as possible.  This is called payment for order flow and unfortunately will probably take an Act of Congress to stop.) Some very large brokers will have trading access to popular equity markets in other countries (Toronto Stock Exchange, Mexico Stock Exchange, London Stock Exchange) and can support your trades there.  However, at many brokers or in less popular foreign markets this is usually not the case; to trade in the average foreign country you typically must open an account with a broker in that country." how does the trading company know which one I want to sell? It doesn't need to know. You just sell one. From taxation point of view depending on the country / tax jurisdiction, it can be only be FIFO or specific stock. "My original answer contained a fundamental error: it turns out that it is not true that any exchange can create its own product to track any underlying index.  If the underlying index is copyrighted (such as the S&P indices, Russell indices, Dow Jones indices, etc.) then the exchange must enter into a licensing agreement (usually exclusive) with the copyright holder in order to use the index's formula (and name).  Without such a license the exchange would only be able to approximate the underlying index, and I don't think that happens very much (because how would you market such a product?). The CME offers several futures (and other derivatives) whose face value is equivalent to some multiple of the S&P500's value on the date when the product expires.  When such a product is actively traded, it may serve as a reasonable indicator of the ""market""'s expectation of the S&P500's future value. So, you could pay attention to the front month of the CME's S&P 500 Mini future, which trades from 17:00-16:00 Chicago time, Sunday night through Friday afternoon.  But remember that the prices quoted there are As another example, if you care about the Russell 2000 index, until 2017 the ICE Exchange happened to hold the license for its derivatives.  They traded from 20:00-17:30 New York time, Sunday night through Friday afternoon.  But in mid-2017 CME bought that license as well, so now you'll want to track it here. Moral: There's almost always some ""after hours"" product out there tracking whatever index you care about, but you may have to do some digging to find it, and it might not be all that useful for your specific purpose." In a simple statement, no doesn't matter. Checked on my trade portal, everything lines up. Same ISIN, same price(after factoring in FX conversions, if you were thinking about arbitrage those days are long gone).  But a unusual phenomenon I have observed is, if you aren't allowed to buy/sell a stock in one market and try to do that in a different market for the same stock you will still not be allowed to do it. Tried it on French stocks as my current provider doesn't allow me to deal in French stocks.