What's the difference between stocks and shares?
For all practical purposes the words mean the same thing.  Shares are just stock in a particular company whereas stock can refer to shares over many companies. Investopedia has a good explaination. If you are a financial journalist you might want to make sure you are using the right term at the right time, but otherwise they are synonyms.
"Different stocks balance dividend versus growth differently. Some have relatively flat value but pay a strong dividend -- utility stocks used to be examples of that model, and bonds are in some sense an extreme version of this. Some, especially startups, pay virtually no dividends and aim for growth in the value of the stock. And you can probably find a stock that hits any point between these. This is the ""growth versus income"" spectrum you may have heard mentioned. In the past, investors took more of their return on investment as dividends -- conceptually, a share of the company's net profits for the year reflecting the share's status as partial ownership. If you wanted to do so, you could use the dividend to purchase more shares (via a dividend reinvestment plan or not), but that was up to you. These days, with growth having been strongly hyped, many companies have shifted much more to the growth model and dividends are often relatively wimpy. Essentially, this assumes that everyone wants the money reinvested and will take their profit by having that increase the value of their shares. Of course that's partly because some percentage of stockholders have been demanding growth at all costs, not always realistically.  To address your specific case: No, you probably aren't buying Microsoft because you like its dividend rate; you're buying it in the hope it continues to grow in stock value. But the dividend is a bit of additional return on your investment. And with other companies the tradeoff will be different. That's one of the things, along with how much you believe in the company, that would affect your decision when buying shares in specific companies. (Personally I mostly ignore the whole issue, since I'm in index funds rather than individual stocks. Picking the fund sets my overall preference in terms of growth versus income; after that it's their problem to maintain that balance.)" Value investing is an investment approach that relies on buying securities below their intrinsic values. There are two main concepts; one is the Intrinsic Value and the other is Margin of Safety.  Intrinsic value is the value of the underlying business - if we are talking about stocks - that can be calculated through carefully analyzing the business looking at all aspects of it. If there is an intrinsic value exists for a company then there is a price tag we can put on its shares as well. Value investing is looking to buy shares well below its intrinsic value.  It is important to know that there is no correct intrinsic value exists for a company and two people can come up with different figures, if they were presented the same data. Calculating the intrinsic value for a business is the hardest part of value investing.  Margin of Safety is the difference between the buying price of a stock and its intrinsic value. Value investors are insisting on buying stocks well below their intrinsic value, where the margin of safety is 20%-30% or even more. This concepts is protecting them from poor decisions and market downturns. It is also providing a room for error, when calculating the intrinsic value.  The approach was introduced by Benjamin Graham and David Dodd in a book called Security Analysis in 1934. Other famous investor using this approach is Warren Buffet Books to read:  I would start to read the first two book first. When there is a difference between the two ... no trading occurs. Let's look at an example: Investor A, B, C, and D all buy/sell shares of company X. Investor A wants to sell 10 shares at $20 a share (Ask price $20 x10). Investor B wants to buy 15 shares at $10 a share (Bid price $10 x15). Since the bid price and ask price are different, no sale is made. Next Investor C comes along and wants to sell 5 shares at $14 (Ask price $14 x5). Still no sale. Investor D comes along and wants to buy 5 shares for $14 each. So a sale is finally made. At this point, the stock quote moves to $14. The ask price is $20 x10 and the bid price is $10 x15. No further trading will occur until another investor is willing to buy at $20 or sell at $10.  Another discussion of this topic is shown on this post. Does this make sense? I'm concerned that by buying shares with post tax income, I'll have ended up being taxed twice or have increased my taxable income. ... The company will then re-reimburse me for the difference in stock price between the vesting and the purchase share price. Sure.  Assuming you received a 100-share RSU for shares worth $10, and your marginal tax rate is 30% (all made up numbers), either: or So you're in the same spot either way.  You paid $300 to get $1,000 worth of stock. Taxes are the same as well.  The full value of the RSU will count as income either way, and you'll either pay tax on the gains of the 100 shares in your RSU our you'll pay tax on gains on the 70 shares in your RSU and the 30 shares you bought.  Since they're reimbursing you for any difference the cost basis will be the same (although you might get taxed on the reimbursement, but that should be a relatively small amount). This first year I wanted to keep all of the shares, due to tax reasons and because believe the share price will go up. I don't see how this would make a difference from a tax standpoint. You're going to pay tax on the RSU either way - either in shares or in cash.  how does the value of the shares going up make a difference in tax? Additionally I'm concerned that by doing this I'm going to be hit by my bank for GBP->USD exchange fees, foreign money transfer charges, broker purchase fees etc.  That might be true - if that's the case then you need to decide whether to keep fighting or decide if it's worth the transaction costs. The price of a share has two components: Bid: The highest price that someone who wants to buy shares is willing to pay for them. Ask: The lowest price that someone who has a share is willing to sell it for. The ask is always higher than the bid, since if they were equal the buyer and seller would have a deal, make a transaction, and that repeats until they are not equal. For stock with high volume, there is usually a very small difference between the bid and ask, but a stock with lower volume could have a major difference. When you say that the share price is $100, that could mean different things. You could be talking about the price that the shares sold for in the most recent transaction (and that might not even be between the current bid and ask), or you could be talking about any of the bid, the ask, or some value in between them. If you have shares that you are interested in selling, then the bid is what you could immediately sell a share for. If you sell a share for $100, that means someone was willing to pay you $100 for it. If after buying it, they still want to buy more for $100 each, or someone else does, then the bid is still $100, and you haven't changed the price. If no one else is willing to pay more than $90 for a share, then the price would drop to $90 next time a transaction takes place and thats what you would be able to immediately sell the next share for. "Actually, this is a pretty good analogy to certain types of stocks, specifically tech and other ""fad"" stocks. Around the turn of the century, there were a lot of ""Bobs"" buying tech stocks (like they would baseball cards), for tech stocks' sakes. That's what drove the internet and tech stock bubbles of high valuations. At other times, the tech stocks are bought and sold mainly by ""Steve's"" for business reasons such as likely (not merely possible) future appreciation, and command a much lower valuation." Since I'm missing the shortest and simplest answer, I'll add it: A car also doesn't offer dividends, yet it's still worth money. A $100 bill doesn't offer dividends, yet people are willing to offer services, or goods, or other currencies, to own that $100 bill. It's the same with a stock. If other people are willing to buy it off you for a price X, it's worth at least close to price X to you. In theory the price X depends on the value of the assets of the company, including unknown values like expected future profits or losses. Speaking from experience as a trader, in practice it's very often really just price X because others pay price X. "A ""stock price"" is nothing but the price at which some shares of that stock were sold on an exchange from someone willing to sell those shares at that price (or more) to someone willing to buy them at that price (or less). Pretty much every question about how stock prices work is answered by the paragraph above, which an astonishingly large number of people don't seem to be aware of. So there is no explicit ""tracking"" mechanism at all. Just people buying and selling, and if the current going price on two exchanges differ, then that is an opportunity for someone to make money by buying on one exchange and selling on the other - until the prices are close enough that the fees and overhead make that activity unprofitable. This is called ""arbitrage"" and a common activity of investment banks or (more recently) hedge funds and specialized trading firms spun off by said banks due to regulation."