How does it work when the same ETF is listed on several stock exchanges?
If I buy VUSA from one exchange, can I sell it in a different exchange, assuming my brokerage account lets me trade in both exchanges? Or is it somehow tied to the exchange I bought it from? This doesn't happen for all securities and between all stock exchanges. So that is dependent on broker and country. I checked for VUSA with Selftrade. They categorically refused allowing me to trade in VUSA in different exchanges. I can only buy and sell in same currency only, albeit sell(buy) in the same exchange where I buy(sell) from. Should be the same behaviour for all brokers for us mere mortals, if you are a bank or a millionaire than that might be a different question.  The VUSA you quote is quoted in GBP in LSE and in EUR in AEX, and the ETF has been created by an Irish entity and has an Irish ISIN.  As Chris mentioned below, happens between US and Canadian exchanges, but not sure it happens across all exchanges. You cannot deal in inter-listed stocks in LSE and NYSE. Since it's the same asset, its value should not vary across exchanges once you compensate for exchange rates, right? Yes, else it opens up itself for arbitrage (profit without any risk) which everybody wants. So even if any such instance occurs, either people will exploit it to make the arbitrage profit zero (security reflects the equilibrium price) or the profit from such transaction is so less, compared with the effort involved, that people will tend to ignore it. Anyways arbitrage profit is very difficult to garner nowadays, considering the super computers at work in the market who exploit these discrepancies, the moment they see them and bring the security right to the zero arbitrage profit point. If there's no currency risk because of #2, what other factors should I consider when choosing an exchange to trade in? Liquidity? Something else? Time difference, by the time you wake up to trade in Japan, the Japanese markets would have closed. Tax implications across multiple continents. Law of the land, providing protection to investors. Finding a broker dealing in markets you want to explore or dealing with multiple brokers. Regulatory headaches.
A company can issue different kinds of shares. For example, some kinds of shares may get preference in dividends or payment in event of (company) bankruptcy. Preferred shares are an example of this. A company might have several kinds of preferred shares and a 'common stock'. Here is a good explanation. See too the Wikipedia article about preferred stock. Toronto-Dominion Bank (TD) is an example of a company that has fourteen different preferred share issues, each with its own listing on the Toronto Stock Exchange (TSE) and symbol. TD has one kind of common stock, which is also listed on the TSE. However, TD common equity trades much more actively than the preferred shares. Remember that preferred stock is a different security type than common stock e.g. common has voting rights, preferred does not. Saxo Bank offers direct access to Athens Stock Exchange. Interactive Brokers is your next best bet, and as you probably already noticed, they do not have a free platform. They are open to US and non-US citizens. Although they do not currently have direct exposure to individual companies on the Athens Stock Exchange, the various european exchanges they do provide direct market access for will give a lot of exposure. There are a few Greek companies that trade on non-Greek stock exchanges, if you want exposure. There are also Greek ETFs which bundle several companies together or try to replicate Greek company indices. You could buy shares of an Exchange-Traded Fund (ETF) based on the price of gold, like GLD, IAU, or SGOL. You can invest in this fund through almost any brokerage firm, e.g. Fidelity, Etrade, Scotttrade, TD Ameritrade, Charles Schwab, ShareBuilder, etc. Keep in mind that you'll still have to pay a commission and fees when purchasing an ETF, but it will almost certainly be less than paying the markup or storage fees of buying the physical commodity directly. An ETF trades exactly like a stock, on an exchange, with a ticker symbol as noted above. The commission will apply the same as any stock trade, and the price will reflect some fraction of an ounce of gold, for the GLD, it started as .1oz, but fees have been applied over the years, so it's a bit less.  You could also invest in PHYS, which is a closed-end mutual fund that allows investors to trade their shares for 400-ounce gold bars. However, because the fund is closed-end, it may trade at a significant premium or discount compared to the actual price of gold for supply and demand reasons. Also, keep in mind that investing in gold will never be the same as depositing your money in the bank. In the United States, money stored in a bank is FDIC-insured up to $250,000, and there are several banks or financial institutions that deposit money in multiple banks to double or triple the effective insurance limit (Fidelity has an account like this, for example). If you invest in gold and the price plunges, you're left with the fair market value of that gold, not your original deposit.  Yes, you're hoping the price of your gold investment will increase to at least match inflation, but you're hoping, i.e. speculating, which isn't the same as depositing your money in an insured bank account. If you want to speculate and invest in something with the hope of outpacing inflation, you're likely better off investing in a low-cost index fund of inflation-protected securities (or the S&P500, over the long term) rather than gold.  Just to be clear, I'm using the laymen's definition of a speculator, which is someone who engages in risky financial transactions in an attempt to profit from short or medium term fluctuations This is similar to the definition used in some markets, e.g. futures, but in many cases, economists and places like the CFTC define speculators as anyone who doesn't have a position in the underlying security. For example, a farmer selling corn futures is a hedger, while the trading firm purchasing the contracts is a speculator. The trading firm doesn't necessarily have to be actively trading the contract in the short-run; they merely have no position in the underlying commodity. No, SPDR ETFs are not a good fit for a novice investor with a low level of financial literacy.  In fact, there is no investment that is safe for an absolute beginner, not even a savings account.  (An absolute beginner could easily overdraw his savings account, leading to fees and collections.) I would say that an investment becomes a good fit for an investor as soon as said investor understands how the investment works.  A savings account at a bank or credit union is fairly easy to understand and is therefore a suitable place to hold money after a few hours to a day of research.  (Even after 0 hours of research, however, a savings account is still better than a sock drawer.) Money market accounts (through a bank), certificates of deposit (through a bank), and money market mutual funds (through a mutual fund provider) are probably the next easiest thing to understand.  This could take a few hours to a few weeks of research depending on the learner. Equities, corporate bonds, and government bonds are another step up in complexity, and could take weeks or months of schooling to understand well enough to try.  Equity or bond mutual funds -- or the ETF versions of those, which is what you asked about -- are another level after that. Also important to understand along the way are the financial institutions and market infrastructure that exist to provide these products:  banks, credit unions, public corporations, brokerages, stock exchanges, bond exchanges, mutual fund providers, ETF providers, etc. The creation mechanism for ETF's ensures that the value of the underlying stocks do not diverge significantly from the Fund's value.  Authorized participants have a strong incentive to arbitrage any pricing differences and create/redeem blocks of stock/etf until the prices are back inline.  Contrary to what was stated in a previous answer, this mechanism lowers the cost of management of ETF's when compared to mutual funds that must access the market on a regular basis when any investors enter/exit the fund. The ETF only needs to create/redeem in a wholesale basis, this allows them to operate with management fees that are much lower than those of a mutual fund.  Expenses Due to the passive nature of indexed strategies, the internal   expenses of most ETFs are considerably lower than those of many mutual   funds. Of the more than 900 available ETFs listed on Morningstar in   2010, those with the lowest expense ratios charged about .10%, while   those with the highest expenses ran about 1.25%. By comparison, the   lowest fund fees range from .01% to more than 10% per year for other   funds. (For more on mutual fund feeds, read Stop Paying High Fees.) Something to consider is how do you want to handle fractional shares. Most open-end funds can easily go to fractional shares to that if you want to invest $500 in a fund each month, it is a relatively easy transaction where some shares will be fractional and handled easily. An ETF may not always work that way unless you go through something like Sharebuilder that would allow the fractional shares as if the ETF is trading at $150/share, you could buy 3 shares but still have $50 that you want to invest but can't as stocks trade in whole share numbers usually. This is without adding brokerage commissions. Depending on the broker, re-investing dividends may or may not be that simple as fractional shares could be a problem since those 3 shares aren't likely to have enough of a dividend to equal another share being bought with the proceeds. If you want the flexibility of stop and limit orders then the ETF may make more sense while the open-end fund is simply to invest whole dollar amounts that then lead to fractional shares. Don't forget to factor in minimums and other stuff as VFIAX may have a bit of a minimum to it as well as possible fees that could be annoying as I remember VFINX having some account maintenance fees that were a bit irksome back in the day that may still be around in some cases so be sure to read the fine print on things. "There are some useful answers here, but I don't think any of them are quite sufficient.  Yes, there are some risks involved in CFD trading, but I will try and give you information so you can make your own decision. Firstly, Cyprus is part of the EU, which gives it a level of credibility.  I'm not saying it's the safest or most well regulated market in the world, but that in itself would not particularly scare me away.  The far more important issue here is the risk of using CFDs and of eToro themselves. A Contract for Difference is really just a specialization of an Equity Swap.  It is in no way like owning a real stock.  When you purchase shares of a company you own a real Asset and are usually entitled to dividends and voting rights.  With a CFD, what you own is one side of a Swap contract.  You have a legal agreement between yourself and eToro to ""swap"" the return earned on the underlying stock for whatever fees eToro decide to charge.  As already mentioned, CFDs are not available to US citizens. Equity swaps have many benefits in financial markets.  They can allow access to restricted markets by entering into swaps with banks that have the necessary licenses to trade in places like China.  Many ""synthetic"" ETFs use them in Europe as a way to minimize tracking error as the return is guaranteed by the swap counterparty (for a charge). They also come with one signficant risk: counterparty credit risk.  When trading with eToro, for as long as your position is open, you are at risk of eToro going bankrupt.  If eToro failed, you do not actually own any stocks, you only own swap contracts which are going to be worthless if eToro ceased to exist. CFDs also have an ongoing cost to maintain the open position.  This makes them less suitable for buy and hold strategies as those ongoing costs will eat into your returns.  It's also not clear whether you would receive any dividends paid by the stock, which make up a significant proportion of returns for buy and hold investors.  eToro's website is fairly non-committal: eToro intends to offer a financial compensation representing the dividends which will be allocated on stocks, to the extent such dividends shall be available to eToro. All of these points expose what CFDs are really for - speculating on the stock market, or as I like to call it: gambling.  If you want to invest in stocks for the long term, CFDs are a bad idea - they have high ongoing costs and the counterparty risk becomes significant.  Wait until you have enough money and then buy the real thing.  Alternatively, consider mutual funds which will allow you to purchase partial shares and will ensure your investment is better diversified across a large number of stocks.  If however, you want to gamble and only keep your position open for a short time, these issues may not be of concern to you. There's nothing wrong with gambling, it can be fun, many people gamble in casinos or on football matches - but bear in mind that's what CFDs are for.  CFDs were in fact originally created for the UK market as a way to avoid paying capital gains tax when making short term speculative trades.  However, if you are going to gamble, make sure you're not putting any more than 1% of your net worth at risk (0.1% may be a better target). There are a few other ways to take a position on stocks using less money than the share price: Fortunately, eToro do not allow leveraged purchase of stocks so you're reasonably safe on this point.  They claim this is because of their 'responsible trading policy', although I find that somewhat questionable coming from a broker that offers 400:1 leverage on FX pairs. One final word on eToro's ""social trading"" feature.  A few years ago I was in a casino playing Blackjack.  I know nothing about Blackjack, but through sheer luck of the draw I managed to treble my money in a very small amount of time.  Seeing this, a person behind me started ""following"" me by putting his chips down on my seat.  Needless to say, I lost everything, but amazingly the person behind me got quite annoyed and started criticizing my strategy.  The idea of following other people's trades just because they've been lucky in the past sounds entirely foolish to me.  Remember the warning on every mutual fund: Past performance does not guarantee future returns" "I'm assuming the question is about how to compare two ETFs that track the same index. I'd look at (for ETFs -- ignoring index funds): So, for example you might compare SPY vs IVV: SPY has about 100x the volume. Sure, IVV has 2M shares trading, so it is liquid ""enough"". But the bigger volume on SPY might matter to you if you use options: open interest is as much as 1000x more on SPY. Even if you have no interest in options, the spreads on SPY are probably going to be slightly smaller. They both have 0.09% expense ratios. When I looked on 2010-9-6, SPY was trading at a slight discount, IVV was at a slight premium. Looking for any sort of trend is left as an exercise to the reader... Grab the prospectus for each to examine the rules they set for fund makeup. Both come from well-known issuers and have a decent history. (Rather than crazy Uncle Ed's pawn shop, or the Central Bank of Stilumunistan.) So unless you find something in the SPY prospectus that makes you queasy, the higher volume and equal expense ratios would seem to suggest it over IVV. The fact that it is at a (tiny) discount right now is a (tiny) bonus."