Buying USA Stocks from Sri Lanka
Verify if a local bank offers to participate in different stock markets - big companies like apple or facebook often gets traded on different markets - like Xetra (germany) or SIX (Switzerland). That being said I'd recommend you to rethink this strategy and maybe using some products offered by your bank - for 1000$ you will quickly drown in fees (my bank requires 40$ for every trade. If you buy and sell them you already lost nearly 10% of your investment) I'm not aware of any method to own US stocks, but you can trade them as contract for difference, or CFDs as they are commonly known. Since you're hoping to invest around $1000 this might be a better option since you can use leverage.
You can use Google Finance Stock Screener for screening US stocks. Apparently it doesn't have the specific criterion (Last Price % diff from 52 week low) you are (were!) looking for.  I believe using its api you can get it, although it won't exactly be a very direct solution. I can't provide a list, but when I took out my Stocks and Shares, I extensively researched for a good, cheap, flexible option and I went with FoolShareDealing.  I've found them to be good, and their online trading system works well.  I hope that's still the case. The easiest route for you to go down will be to consult wikipedia, which will provide a comprehensive list of all US stock exchanges (there are plenty more than the ones you list!). Then visit the websites for those that are of interest to you, where you will find a list of holiday dates along with the trading schedule for specific products and the settlement dates where relevant. In answer to the other part of your question, yes, a stock can trade on multiple exchanges. Typically (unless you instruct otherwise), your broker will route your order to the exchange where it can be matched at the most favorable price to you at that time. 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 "Yes and no.  There are two primary ways to do this.  The first is known as ""cross listing"". Basically, this means that shares are listed in the home country are the primary shares, but are also traded on secondary markets using mechanisms like ADRs or Globally Registered Shares. Examples of this method include Vodafone and Research in Motion. The second is ""dual listing"". This is when two corporations that function as a single business are listed in multiple places. Examples of this include Royal Dutch Shell and Unilever. Usually companies choose this method for tax purposes when they merge or acquire an international company. Generally speaking, you can safely buy shares in whichever market makes sense to you." I have not looked in details but apparently the company has (at least) a dual listing in Hong Kong (its main listing, ticker 700) and in the US (ticker TCTZF). It also has an ADR (TCEHY), the underlying of which is the HK line. The two US listings essentially trade at the same price and will provide very similar returns but a major difference is that TCTZF pays dividends in HKD whereas TCEHY pays its dividends in USD. The latter may be more convenient depending on the account you use to trade the stock. The ADR line is also more liquid. Selftrade does list them. Not sure if you'll be able to sign up from the US though, particularly given the FATCA issues. With $7 Million at stake I guess it would be prudent to take legal advise as well as advise from qualified CA. Forex trading for select currency pair [with one leg in INR] is allowed. Ex USDINR, EURINR, JPYINR, GBPINR. Forex trading for pairs without INR or not in the above list is NOT allowed. "The recommendation is not to make the investment. In general, a company does not have to sell their shares to you or allow you to become an investor, because, as you have stated, it is a private company not quoted on the stock market.   If everyone were trustworthy, you could buy the tools for $11000 -- so that you own the tools -- and sign a lease of the tools to the company whereby they pay you $X/month.  The lease should be reviewed by a lawyer before it is signed, and perhaps give the buyer the right to demand back the tools at any time.  However, even this arrangement is very risky, because the ""company"" could simply steal or damage the tools and disappear.   It is not an investment that I would make, because it sounds too good to be true.  $2800/mo steady cash flow for $11,000 invested.  No, I don't think so.   The following information may also be useful, either to you, or future readers: If you still want to make this investment, then you should know that: The offering for sale of shares by companies located in the USA is subject to a wild array of complex laws.  This is true in many other countries as well.  These laws,  called securities laws or regulations,  can require certain disclosures, require that investors have a high net worth so that they can afford to lose the money or conduct their own investigations and legal actions, or require that the investors know the company founders personally, and can prohibit or limit resale by the buyer/investor.  Promoters who say you can still invest and are ignoring or disobeying the securities laws are being at least negligent, but more likely are dishonest and probably criminal.  Even if you trust in the investment, can you trust negligent managers to do a good job executing that investment? What about dishonest managers?  What about criminals and thieves?" "The effect of making a single purchase, of size and timing described, would not cause market disequilibrium, it would only hurt you (and your P&L). As @littleadv said, you would be unlikely to get your order filled.  You asked about making a ""sudden"" purchase. Let's say you placed the order and were willing to accept a series of partial fills e.g. in 5,000 or 10,000 share increments at a time, over a period of hours. This would be a more moderate approach. Even spread out over the span of a day, this remains unwise.  A better approach would be to buy small lots over the course of a week or month. But your transaction fees would increase. Investors make money in pink sheets and penny stocks due to increases in share price of 100% (on the low end), with a relatively small number of shares. It isn't feasible to earn speculator profits by purchasing huge blocks (relative to number of shares outstanding) of stock priced < $1.00 USD and profit from merely 25%  price increases on large volume." Remember that unless you participate in the actual fund that these individuals offer to the public, you will not get the same returns they will. If you instead do something like, look at what Warren Buffet's fund bought/sold yesterday (or even 60 minutes ago), and buy/sell it yourself, you will face 2 obstacles to achieving their returns: 1) The timing difference will mean that the value of the stock purchased by Warren Buffet will be different for your purchase and for his purchase. Because these investors often buy large swathes of stock at once, this may create large variances for 2 reasons: (a) simply buying a large volume of a stock will naturally increase the price, as the lowest sell orders are taken up, and fewer willing sellers remain; and (b) many people (including institutional investors) may be watching what someone like Warren Buffet does, and will want to follow suit, chasing the same pricing problem. 2) You cannot buy multiple stocks as efficiently as a fund can. If Warren Buffet's fund holds, say, 50 stocks, and he trades 1 stock per day [I have absolutely no idea about what diversification exists within his fund], his per-share transaction costs will be quite low, due to share volume. Whereas for you to follow him, you would need 50 transactions upfront, + 1 per day. This may appear to be a small cost, but it could be substantial. Imagine if you wanted to invest 50k using this method - that's $1k for each of 50 companies. A $5 transaction fee would equal 1% of the value of each company invested [$5 to buy, and $5 to sell]. How does that 1% compare to the management fee charged by the actual fund available to you? In short, if you feel that a particular investor has a sound strategy, I suggest that you consider investing with them directly, instead of attempting to recreate their portfolio. While most all Canadian brokers allow us access to all the US stocks, the reverse is not true.  But some US brokers DO allow trading on foreign exchanges. (e.g. Interactive Brokers at which I have an account).  You have to look and be prepared to switch brokers.  Americans cannot use Canadian brokers (and vice versa). Trading of shares happens where-ever two people get together - hence the pink sheets.  These work well for Americans who want to buy-sell foreign stocks using USD without the hassle of FX conversions.  You get the same economic exposure as if the actual stock were bought.   But the exchanges are barely policed, and liquidity can dry up, and FX moves are not necessarily arbitraged away by 'the market'.  You don't have the same safety as ADRs because there is no bank holding any stash of 'actual' stocks to backstop those traded on the pink sheets. Cross-listing shouldn't be an issue, as the sole reason stocks would behave differently on different exchanges would be due to exchange rates (sure, noise and time differences, but weekly data should take care most of that). If you're using MSCI World index figures in USD, you either have to convert stocks denominated in other currencies to USD at their historical fx rates, or just save a lot of time and use data from stocks listed in the US, when available. Depending on your broker, you can buy these stocks directly at the most liquid local exchanges. For instance, if you are US resident and want to to buy German stocks (like RWE) you can trade these stocks over InteractiveBrokers (or other direct brokers in the US). They offer direct access to German Xetra and other local markets. not a chance. imagine how this could be abused. US stock exchanges rarely ever do any reversing of transactions. theres a million different ways the market can take your money. a loss from a typo is nothing special. its a mismanagement just like any other loss or profit for others.