Is there a way I can get bid/ask price data on the NSE in real time?
Yes apply for live and dynamic data (you may have to pay for this depending on your broker and your country) and look at the market depth. Quite a few Banks/brokers offer direct terminals to NSE where you can see live prices. Buy Data products from NSE. You will get historical order book. The Live order book may not be available. https://www.nseindia.com/supra_global/content/dotex/data_products.htm This link has all the data products that NSE can provide
Most of the Indian Brokers started offering API's to retail client these days. And NSE Exchange also supports algo trading at retail level. Currently two levels of API are offered. 1)Semi-automatic or one touch trading (Retail Traders) 2)Fully Automatic ( Dealers) I had tested the API with a discount broker www.tradejini.com and it is good at retail level. But to make your trading systems fully automatic you need to pass NISM Series VIII certification (Dealer Certification) and have to take dealer terminals from the broker. You also have to register as a dealer and have to take permission from exchange to run your algos fully automated. Without Exchange permission it is illegal to involve in algo trading. You might what to check out Interactive Brokers. If your India stock is NSE listed they might be able to do it since they support trading on that exchange. I would talk to a customer service rep there first. https://www.interactivebrokers.com/en/index.php?f=exchanges&p=asia "Try the general stock exchange web page. http://www.aex.nl I did a quick trial myself and was able to download historical data for the AEX index for the last few years.  To get to the data, I went to the menu point ""Koersen"" on the main page and chose ""Indices"". I then entered into the sub page for the AEX index. There is a price chart window in which you have to choose the tab ""view data"". Now you can choose the date range you need and then download in a table format such as excel or csv. This should be easy to import into any software.  This is the direct link to the sub page: http://www.aex.nl/nl/products/indices/NL0000000107-XAMS/quotes" "Can you give me a rundown of what I'm seeing?  Is this basically a super zoomed in tracker of a current stock or something?  Where a stock fluctuates a few cents up/down on the day, and you just trade before it goes down, then trade as it goes up or what?  EDIT: Is this really live?  Can you say, ""Yes this is live narwalls""" "Yes. S&P/ Case-Shiller real-estate indices are available, as a single national index as well as multiple regional geographic indices. These indices are updated on the last Tuesday of every month. According to the Case-Shiller Index Methodology documentation: Their purpose is to measure the average change in home prices in 20 major metropolitan areas... and three price tiers– low, middle and high. The regional indices use 3-month moving averages, published with a two-month lag. This helps offset delays due to ""clumping"" in the flow of sales price data from county deed recorders. It also assures sufficient sample sizes.  Regional Case-Shiller real-estate indices  * Source: Case-Shiller Real-estate Index FAQ. The S&P Case-Shiller webpage has links to historical studies and commentary by Yale University Professor Shiller. Housing Views posts news and analysis for the regional indices. Yes. The CME Group in Chicago runs a real-estate futures market. Regional S&P/ Case-Schiller index futures and options are   the first [security type] for managing U.S. housing risk. They    provide protection, or profit, in up or down markets. They extend to the   housing industry the same tools, for risk management and investment,    available for agriculture and finance. But would you want to invest? Probably not. This market has minimal activity. For the three markets, San Diego, Boston and Los Angeles on 28 November 2011, there was zero trading volume (prices unchanged), no trades settled, no open interest, see  far right, partially cut off in image below.  * Source: Futures and options activity[PDF] for all 20 regional indices.  I don't know the reason for this situation. A few guesses: Additional reference: CME spec's for index futures and options contracts." It's difficult to compile free information because the large providers are not yet permitted to provide bulk data downloads by their sources.  As better advertising revenue arrangements that mimic youtube become more prevalent, this will assuredly change, based upon the trend. The data is available at money.msn.com.  Here's an example for ASX:TSE.  You can compare that to shares outstanding here. They've been improving the site incrementally over time and have recently added extensive non-US data.  Non-US listings weren't available until about 5 years ago. I haven't used their screener for some years because I've built my own custom tools, but I will tell you that with a little PHP knowledge, you can build a custom screener with just a few pages of code; besides, it wouldn't surprise me if their screener has increased in power.  It may have the filter you seek already conveniently prepared. Based upon the trend, one day bulk data downloads will be available much like how they are for US equities on finviz.com.  To do your part to hasten that wonderful day, I recommend turning off your adblocker on money.msn and clicking on a worthy advertisement.  With enough revenue, a data provider may finally be seduced into entering into better arrangements.  I'd much rather prefer downloading in bulk unadulterated than maintain a custom screener. money.msn has been my go to site for mult-year financials for more than a decade.  They even provide limited 10-year data which also has been expanded slowly over the years. Thanks to the other answers, I now know what to google for. Frankfurt Stock Exchange: http://en.boerse-frankfurt.de/equities/newissues London Stock Exchange: http://www.londonstockexchange.com/statistics/new-issues-further-issues/new-issues-further-issues.htm Not that I am aware. There are times that an option is available, but none have traded yet, and it takes a request to get a bid/ask, or you can make an offer and see if it's accepted. But the option chain itself has to be open. Robert Shiller has an on-line page with links to download some historical data that may be what you want here. Center for the Research in Security Prices would be my suggestion for another resource here. You may refer to project http://jstock.sourceforge.net. It is open source and released under GPL. It is fetching data from Yahoo! Finance, include delayed current price and historical price. You say: Every time it seems the share price dips. Does it?  Have you collected the data?   It may just be that you are remembering the events that seem most painful at the time. To move the market with your trade you need to be dealing in a large amount of shares.    Unless the stock is illiquid (e.g most VCT in the UK), I don’t think you are dealing in that large a number; if you were then you would likely have access to a real time feed of the order book and could see what was going on. I'm answering in a perspective of an End-User within the United Kingdom. Most stockbrokers won't provide Real-time information without 'Level 2' access, however this comes free for most who trade over a certain threshold. If you're like me, who trade within their ISA Holding each year, you need to look elsewhere.  I personally use IG.com. They've recently began a stockbroking service, whereas this comes with realtime information etc with a paid account without any 'threshold'. Additionally, you may want to look into CFDs/Spreadbets as these, won't include the heavy 'fees' and tax liabilities that trading with stocks may bring. Well, kind of XD. I usually just look through Business Week for the ADRs that are on the OTC market. I don't do anything major, but why I love them is that they have a greater reach than just ADRs on the NYSE or NASDAQ. Like for instance, if I wanted to own Thai or European stocks, many of the larger, more reputable firms are listed on the OTC market. Having said that, most other sites don't have earnings reports laid out for you. Business Week does. The only fancy thing I am interested in are options and options on futures, and Bar Chart is good for the latter. In order to see whether you can buy or sell some given quantity of a stock at the current bid price, you need a counterparty (a buyer) who is willing to buy the number of stocks you are wishing to offload. To see whether such a counterparty exists, you can look at the stock's order book, or level two feed. The order book shows all the people who have placed buy or sell orders, the price they are willing to pay, and the quantity they demand at that price. Here is the order book from earlier this morning for the British pharmaceutical company, GlaxoSmithKline PLC.  Let's start by looking at the left-hand blue part of the book, beneath the yellow strip. This is called the Buy side. The book is sorted with the highest price at the top, because this is the best price that a seller can presently obtain. If several buyers bid at the same price, then the oldest entry on the book takes precedence. You can see we have five buyers each willing to pay 1543.0 p (that's 1543 British pence, or £15.43) per share. Therefore the current bid price for this instrument is 1543.0. The first buyer wants 175 shares, the next, 300, and so on. The total volume that is demanded at 1543.0p is 2435 shares. This information is summarized on the yellow strip: 5 buyers, total volume of 2435, at 1543.0. These are all buyers who want to buy right now and the exchange will make the trade happen immediately if you put in a sell order for 1543.0 p or less. If you want to sell 2435 shares or fewer, you are good to go. The important thing to note is that once you sell these bidders a total of 2435 shares, then their orders are fulfilled and they will be removed from the order book. At this point, the next bidder is promoted up the book; but his price is 1542.5, 0.5 p lower than before. Absent any further changes to the order book, the bid price will decrease to 1542.5 p. This makes sense because you are selling a lot of shares so you'd expect the market price to be depressed. This information will be disseminated to the level one feed and the level one graph of the stock price will be updated. Thus if you have more than 2435 shares to sell, you cannot expect to execute your order at the bid price in one go. Of course, the more shares you are trying to get rid of, the further down the buy side you will have to go. In reality for a highly liquid stock as this, the order book receives many amendments per second and it is unlikely that your trade would make much difference. On the right hand side of the display you can see the recent trades: these are the times the trades were done (or notified to the exchange), the price of the trade, the volume and the trade type (AT means automatic trade).  GlaxoSmithKline is a highly liquid stock with many willing buyers and sellers. But some stocks are less liquid. In order to enable traders to find a counterparty at short notice, exchanges often require less liquid stocks to have market makers. A market maker places buy and sell orders simultaneously, with a spread between the two prices so that they can profit from each transaction. For instance Diurnal Group PLC has had no trades today and no quotes. It has a more complicated order book, enabling both ordinary buyers and sellers to list if they wish, but market makers are separated out at the top. Here you can see that three market makers are providing liquidity on this stock, Peel Hunt (PEEL), Numis (NUMS) and Winterflood (WINS). They have a very unpalatable spread of over 5% between their bid and offer prices. Further in each case the sum total that they are willing to trade is 3000 shares. If you have more than three thousand Dirunal Group shares to sell, you would have to wait for the market makers to come back with a new quote after you'd sold the first 3000. it looks like using an ADR is the way to go here.  michelin has an ADR listed OTC as MGDDY. since it is an ADR it is technically a US company that just happens to be a shell company holding only shares of michelin. as such, there should not be any odd tax or currency implications. while it is an OTC stock, it should settle in the US just like any other US OTC. obviously, you are exposing yourself to exchange rate fluctuations, but since michelin derives much of it's income from the US, it should perform similarly to other multinational companies. notes on brokers: most US brokers should be able to sell you OTC stocks using their regular rates (e.g. etrade, tradeking). however, it looks like robinhood.com does not offer this option (yet). in particular, i confirmed directly from tradeking that the 75$ foreign settlement fee does not apply to MGDDY because it is an ADR, and not a (non-ADR) foreign security.