Buy securities at another stock exchange
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. Different exchanges sometimes offer different order types, and of course have different trading fees.  But once a trade is finished, it should not matter where it was executed. Also important to keep in mind is the difference in liquidity. The stock could be very liquid in 1 exchange but not in another. When times get bad, liquidity could dry up 1 one exchange, which results in a trading discount. "Really arbitrage means that, currency risk aside, it shouldn't matter which exchange you buy on in price terms alone. Arbitrage will always make sure that the prices are equivalent otherwise high frequency traders can make free money off the difference. In practical terms liquidity and brokerage costs usually make trading on the ""home"" exchange more worthwhile as any limit orders etc will be filled at a better price as you will more easily find a counterparty to your trade. Obviously that will only be an issue where your quantity is significant enough to move the market on a given exchange. The volume needed to move a market is dependent upon the liquidity of the particular stock." Yes, it does matter very much. There's a thing called fungible instruments. These are the instruments where it doesn't matter. E.g. most options I ever dealt with in the US are fungible no matter which US exchange you trade them on. A fungible instrument is an instrument where you buy 1 lot on exchange A, then sell 1 lot on exchange B, and as a result you have 0 lots.  With another instrument, you can buy 1 lot on exchange A, sell 1 lot on exchange B, and even tough they are the exact same thing, you now own 1, and owe 1 - they don't cancel each other out. Other than that, in different countries there are obviously different laws and regulations. For a small at home trader who just gambles for fun and isn't interested in negative positions (sell what you don't have), there isn't much of a difference . I think that's what the other answers are saying.
Traditionally, dealers and broker-dealers were in contact with the actual producers of a product or issuers of a security, selling it at the exchange on their behalf.  Consumers would traditionally be on the buy side, of course. These days, anyone can enter the market on either side.  Even if you don't hold the security or product, you could sell it, and take on the risk of having to stock up on it by the delivery date in exchange for cash or other securities.  On the other side, if you can't hold the product or security you could still buy it, taking on the risk of having to dispose of it somehow by delivery in exchange for cash or other securities. In either case you (the sell-side) take on risk and provide products/securities/cash.  This is most commonly known as market making.  Modern literature coins the terms liquidity taker (buy-side) and liquidity provider (sell-side).  Even more accurately, risk management literature would use the terms risk-taker (sell-side) and risk spreader or risk reducer (buy side). This is quite illustrative in modern abstract markets.  Take a market that allows for no offsetting or hedging because the product in question is abstract or theoretical, e.g. weather trading, volatility trading, inflation trading, etc.  There's always one party trying to eliminate dependence on or correlation to the product (the risk reducer, buy-side) and the counterparty taking on their risk (sell-side). Yes, depending on what you're trying to achieve. If its just a symbolic gift - you can use a service like this. There are several companies providing this service, look them up, but the prices are fairly the same. You'll end up getting a real stock certificate, but it will cost a lot of overhead (around $40 to get the certificate, and then another $40 to deposit it into a brokerage account if you want to sell it on a stock exchange). So although the certificate is real and the person whose name on it is a full-blown shareholder, it doesn't actually have much value (unless you buy a Google or Apple stock, where the price is much much higher than the fees). Take into account that it takes around 2 months for the certificate to be issued and mailed to you, so time accordingly. Otherwise, you can open a custodial brokerage account, and use it to buy stocks for the minor. Both ways are secure and legal, each for its own purpose and with its own fees. "Cart's answer describes well one aspects of puts: protective puts; which means using puts as insurance against a decline in the price of shares that you own.  That's a popular use of puts.  But I think the wording of your question is angling for another strategy: Writing puts. Consider: Cart's strategy refers to the buyer of a put.  But, on the transaction's other side is a seller of the put – and ultimately somebody created or wrote that put contract in the first place!  That first seller of the put – that is, the seller that isn't just selling one they themselves bought – is the put writer. When you write a put, you are taking on the obligation to buy the other side's stock at the put exercise price if the stock price falls below that exercise price by the expiry date.  For taking on the obligation, you receive a premium, like how an insurance company charges a premium to insure against a loss. Example:  Imagine ABC Co. stock is trading at $25.00.  You write a put contract agreeing to buy 100 shares of ABC at $20.00 per share (the exercise price) by a given expiration date.  Say you receive $2.00/share premium from the put buyer.  You now have the obligation to purchase the shares from the put buyer in the event they are below $20.00 per share when the option expires – or, technically any time before then, if the buyer chooses to exercise the option early. Assuming no early assignment, one of two things will happen at the option expiration date: ABC trades at or above $20.00 per share. In this case, the put option will expire worthless in the hands of the put buyer.  You will have pocketed the $200 and be absolved from your obligation.  This case, where ABC trades above the exercise price, is the maximum profit potential. ABC trades below $20.00 per share.  In this case, the put option will be assigned and you'll need to fork over $2000 to the put buyer in exchange for his 100 ABC shares.  If those shares are worth less than $18.00 in the market, then you've suffered a loss to the extent they are below that price (times 100), because remember – you pocketed $200 premium in the first place.  If the shares are between $18.00 to $20.00, you're still profitable, but not to the full extent of the premium received. You can see that by having written a put it's possible to acquire ABC stock at a price lower than the market price – because you received some premium in the process of writing your put.  If you don't ""succeed"" in acquiring shares on your first write (because the shares didn't get below the exercise price), you can continue to write puts and collect premium until you do get assigned. I have read the book ""Money for Nothing (And Your Stocks for FREE!)"" by Canadian author Derek Foster.  Despite the flashy title, the book essentially describes Derek's strategy for writing puts against dividend-paying value stocks he would love to own.  Derek picks quality companies that pay a dividend, and uses put writing to get in at lower-than-market prices.  Four Pillars reviewed the book and interviewed Derek Foster: Money for Nothing: Book Review and Interview with Derek Foster. Writing puts entails risk.  If the stock price drops to zero then you'll end up paying the put exercise price to acquire worthless shares!  So your down-side can easily be multiples of the premium collected.  Don't do this until and unless you understand exactly how this works.  It's advanced. Note also that your broker isn't likely to permit you to write puts without having sufficient cash or margin in your account to cover the case where you are forced to buy the stock.  You're better off having cash to secure your put buys, otherwise you may be forced into leverage (borrowing) when assigned.  Additional Resources: The Montreal Exchange options guide (PDF) that Cart already linked to is an excellent free resource for learning about options.  Refer to page 39, ""Writing secured put options"", for the strategy above. Other major options exchanges and organizations also provide high-quality free learning material:" "Just read the book Flash Boys by Michael Lewis.  It describes this process in detail, albeit a bit more dramatically than it has to.  Basically what ""HFTs"" (high frequency traders) do is they set up their line to the exchange so its microseconds faster than everyone else.  Then they test out the market with tiny orders, seeing how fast it's getting filled - if these are getting filled immediately, it probably means there's a big order coming in from an investor.  So the algorithm - and it's all algo-based obviously because no human can remotely hope to catch this - will detect that as soon as there's a spike in volume, it will buy all of the volume at the current price, and sell it back for higher, forcing the big investor to take on higher prices.    Another case is that some HFTs can basically buy the entire trade book from an exchange like Nasdaq.  So every time someone places a market order for 200 shares of a 6.5 stock, the HFT will see it, buy up all the current stock from say 6.5-6.6 and sell it back at 6.7.  Not rocket science if you already get info about the trade coming in, in fact this is basically market making but performed by an ""evil HFT"" instead of a ""trustworthy bank.""    But honestly there are a lot more ways to make money from HFT than front-running, which isn't even possible anymore because exchanges no longer sell their books to HFTs." Yes, the ADR will trade on a separate exchange from the underlying one, and can (and does) see fluctuations in price that do not match the (exchange corrected) fluctuations that occur in the original market. You are probably exposing yourself to additional risk that is related to: There is such a thing as a buy-write, which is buying a stock and writing a (covered) call simultaneously. But as far as I know brokers charge two commissions, one stock trade and one options trade so you're not going to save on commissions. No, this is not generally possible, as each security purchase is booked as a separate order => hence separate transaction. You can do this through purchasing of a fund, i.e.: purchasing one share of a ETF will get you a relative share of the ETF holdings, but the actual holdings are not up to you then. NYSE and Nasdaq are secondary markets where stocks are bought or sold. The process of creating new stocks via IPO or private placements etc are called Private Market.