What is the point of the stock market? What is it for, and why might someone want to trade or invest?
The stock market is just like any other market, but stocks are bought and sold here. Just like you buy and sell your electronics at the electronics market, this is a place where buyers and sellers come together to buy and sell shares or stocks or equity, no matter what you call it. What are these shares?  A share is nothing but a portion of ownership of a company. Suppose a company has 100 shares issued to it, and you were sold 10 out of those, it literally means you are a 10% owner of the company. Why do companies sell shares? Companies sell shares to grow or expand. Suppose a business is manufacturing or producing and selling goods or services that are high in demand, the owners would want to take advantage of it and increase the production of his goods or services. And in order to increase production he would need money to buy land or equipment or labor, etc. Now either he could go get a loan by pledging something, or he could partner with someone who could give him money in exchange for some portion of the ownership of the company. This way, the owner gets the money to expand his business and make more profit, and the lender gets a portion of profit every time the company makes some. Now if the owner decides to sell shares rather than getting a loan, that's when the stock market comes into the picture. Why would a person want to trade stocks? First of all, please remember that stocks were never meant to be traded. You always invest in stocks. What's the difference? Trading is short term and investing is long term, in very simple language. It's the greed of humans which led to this concept of trading stocks. A person should only buy stocks if he believes in the business the company is doing and sees the potential of growth. Back to the question: a person would want to buy stocks of the company because: How does a stock market help society? Look around you for the answer to this question. Let me give you a start and I wish everyone reading this post to add at least one point to the answer. Corporations in general allow many people come together and invest in a business without fear that their investment will cause them undue liability - because shareholders are ultimately not liable for the actions of a corporation. The cornerstone North American case of how corporations add value is by allowing many investors to have put money towards the railroads that were built across America and Canada. For The stock market in particular, by making it easier to trade shares of a company once the company sells them, the number of people able to conveniently invest grows exponentially. This means that someone can buy shares in a company without needing to knock door to door in 5 years trying to find someone to sell to. Participating in the stock market creates 'liquidity', which is essentially the ease with which stocks are converted into cash. High liquidity reduces risk overall, and it means that those who want risk [because high risk often creates high reward] can buy shares, and those who want low risk [because say they are retiring and don't have a risk appetite anymore] can sell shares. I rather like The Ascent of Money, by Niall Ferguson. This comes in several formats. There's a video version, a written version (ISBN-13: 978-1594201929), and an audio version. This book covers the history of financial instruments. It covers the rise of money, the history of bonds and stocks, insurance and hedge funds, real-estate, and the spread of finance across the world. It is a great introduction to finance, though its focus is very definitely on the history. It does not cover more advanced topics, and will not leave you with any sort of financial plan, but it's a great way to get a broad overview and historical understanding of money and markets. I strongly recommend both the video and the written or audio version. "In finance, form is function, and while a reason for a trade could be anything, but since the result of a trade is a change in value, it could be presumed that one seeks to receive a change in value. Stock company There may have been more esoteric examples, but currently, possession of a company (total ownership of its' assets actually) is delineated by percentage or a glorified ""banknote"" frequently called a ""share"".  Percentage companies are usually sole proprietorship and partnerships, but partnerships can now trade in ""units"".  Share companies are usually corporations. With shares, a company can be divided into almost totally indistinguishable units.  This allows for more flexible ownership, so individuals can trade them without having to change the company contract. Considering the ease of trade, it could be assumed that common stock contract provisions were formulated to provide for such an ease. Motivation to trade This could be anything, but it seems those with the largest ownership of common stock have lots of wealth, so it could be assumed that people at least want to own stocks to own wealth. Shorting might be a little harder to reason, but I personally assume that the motivation to trade is still to increase wealth. Social benefit of the stock market Assuming that ownership in a company is socially valuable and that the total value of ownership is proportional to the social value provided, the social benefit of a stock market is that it provided the means to scale ownership through convenience, speed, and reliability."
"I think the first misconception to clear up is that you are implying the price of a stock is set by a specific person. It is not. The price of a stock is equal to the value that someone most recently traded at. If Apple last traded at $100/share, then Apple shares are worth $100. If good news about Apple hits the market and people holding the shares ask for more money, and the most recent trade becomes $105, then that is now what Apple shares are worth. Remember that generally speaking, the company itself does not sell you its shares - instead, some other investor sells you shares they already own. When a company sells you shares, it is called a 'public offering'. To get to your actual question, saying something is 'priced in' implies that the 'market' (that is, investors who are buying and selling shares in the company) has already considered the impacts of that something. For example, if you open up your newspaper and read an article about IBM inventing a new type of computer chip, you might want to invest in IBM. But, the rest of the market has also heard the news. So everyone else has already traded IBM assuming that this new chip would be made. That means when you buy, even if sales later go up because of the new chip, those sales were already considered by the person who chose the price to sell you the shares at. One principle of the stock market (not agreed to by all) is called market efficiency. Generally, if there were perfect market efficiency, then every piece of public information about a company would be perfectly integrated into its stock price. In such a scenario, the only way to get real value when buying a company would be to have secret information of some sort. It would mean that everyone's collective best-guess about what will happen to the company has been ""priced-in"" to the most recent share trade." "Remind yourself that markets recover, usually within a few years. If you believe this and can remind yourself of this, you will be able to see the down cycles of the market as an opportunity to buy stock ""on sale"". No one knows the future, so many people have found investing on a regular schedule to be helpful. By putting in the same amount of money each period, you will end up buying fewer shares when the market is up, and more when it is down. As long as your time horizon is appropriate, you should be able to wait out the ups and downs. Stocks are volatile by their very nature, so if you find that you are very concerned by this, you might want to consider whether you should adjust the amount of risk in your investments, since over time, most people lose money by trying to ""time"" the market. However, if your investment goals and requirements haven't changed, there likely isn't any need to change the types of assets you are investing in, as what you are choosing to invest in should depend on your personal situation. Edit: I am assuming you want to be a long-term investor and owner, making money by owning a portion of companies' profits, and not by trading stocks and/or speculation." It might seem like the PE ratio is very useful, but it's actually pretty useless as a measure used to make buy or sell decisions, and taken largely on its own, pretty useless becomes utterly and completely useless. Stocks trade at prices based on future expectations and speculation, so that means if traders expect a company to double its profits next year, the share price could easily double (there are reasons it might not increase so much, and there are reasons it could increase even more than that, but that's not the point). The Price is now double, but the Earnings is still the same, so the PE ratio is double, and this doubling is based on something some traders know, or think they know, but other traders might not know or not believe! Once you understand that, what use is a PE ratio really? The PE ratio of a company might be low because it is in a death spiral, with many traders believing it will report lower and lower profits in years to come, and the lower the PE ratio of a given company gets probably, relatively, the more likely it is to go bust! If you buy a stock with a low PE ratio you must do so because you feel you understand the company, understand why the market is viewing it negatively, believe that the negativity is wrong or over done, and believe that it will turn around. Equally a PE ratio might be high, but be an excellent buy still because it has excellent growth prospects and potential even beyond what is priced in already! Lets face it, SOMEONE has been buying at the price that's put that PE ratio where is is, right? They might be wrong of course, or not! Or they might be justified now but circumstances might change before earnings ever reach the current priced in expectation. You'll know next year probably! To answer your actual question... first you should now understand there is no such thing as a stock that is on sale, just stocks that are priced broadly according to the markets consensus on its value in years to come, the closest thing being a stock that is 'over sold' (but one man's 'over sold' is another man's train crash remember)... so what to actually look for? The only way to (on average) make good buy and sell decisions is to know about investing and trading (buy some books, I have 12), understand the businesses you propose to invest in and understand their market(s) (which may also mean understanding national and international economics somewhat). For a non-technical investor (meaning someone who doesn't try to do all the various technical analysis things that theoretically point to specific investments or trends), having a diverse portfolio and rebalancing it periodically will typically be the best solution. For example, I might have a long-term-growth portfolio that is 40% broad stock market fund, 40% (large) industry specific market funds, and 20% bond funds.  If the market as a whole tanks, then I might end up in a situation where my funds are invested 30% market 35% industry 35% bonds.  Okay, sell those bonds (which are presumably high) and put that into the market (which is presumably low).  Now back to 40/40/20.   Then when the market goes up we may end up at 50/40/10, say, in which case we sell some of the broad market fund and buy some bond funds, back to 40/40/20.  Ultimately ending up always selling high (whatever is currently overperforming the other two) and buying low (whatever is underperforming).   Having the industry specific fund(s) means I can balance a bit between different sectors - maybe the healthcare industry takes a beating for a while, so that goes low, and I can sell some of my tech industry fund and buy that.   None of this depends on timing anything; you can rebalance maybe twice a year, not worrying about where the market is at that exact time, and definitely not targeting a correction specifically.  You just analyze your situation and adjust to make everything back in line with what you want. This isn't guaranteed to succeed (any more than any other strategy is), of course, and has some risk, particularly if you rebalance in the middle of a major correction (so you end up buying something that goes down more).  But for long-term investments, it should be fairly sound. "It's interesting that after reading this article you would make an assumption about where the stock market is headed. This article specifically says that the only way to know that is to know where interest rates are going, and for that we can guarantee no one knows.   The takeaway is this: ""The key to investing is not assessing how much an industry is going to affect society, or how much it will grow, but rather determining the competitive advantage of any given company and, above all, the durability of that advantage. The products or services that have wide, sustainable moats around them are the ones that deliver rewards to investors.""  Intelligent investors should have no concern about what ""the market"" is doing. Analyze businesses, not the stock market." I think three things are happening right now:  1) The stock market is one of the only sensible places to get a return on your money. Bond rates are very low and real estate is a little trickier.   2) There are fewer publicly traded companies now than there have been in the past. It's easier to invest in public companies than private companies, so more money is going into fewer companies, inflating the prices.  3) Wealth inequality is higher now than it has been in decades. If you give poor people more money, they just spend it to lead more comfortable lives. They won't invest in the stock market. If you give a rich person more money, they just invest more of it, since they are already spending as much as they reasonably can. In this economy, for the past few decades, we've been giving the rich more and more money.  So, with these 3 factors, more money is pouring into the fewer companies of the stock market, inflating their prices.   (At least, this is the idea put forward by a Fidelity analyst I heard a talk from recently, and it makes sense to me). Hi guys,  This is an app I've been working on over the summer. It's my belief that a lot of people want to learn about the stock market but in the end can't because they're turned off by long walls of text you get when you Google about them/read a textbook.   I know there are other simplified solutions out there but they're not widely adopted yet and I don't think there are any (?) that were made app first.  Anyway, check it out if you can. Appreciate all feedback/comments. "Doing your homework means to perform what's more accurately called ""fundamental analysis"". According to proponents of fundamental analysis (FA), it is possible to accurately determine how much a stock should trade for and then buy or sell the stock based on whether it trades above or below this target price. This target price is based on the discounted anticipated future earnings of your stock, so ""doing your homework"" means that you figure out how much future earnings you can expect from the stock and then figuring out at what rate you want to discount those future earnings (Are 1000 dollars that you'll earn next year worth $800 today or $900 or only $500? That depends on the overall economic and political climate...) So does this make any sense? Depends. I'm aware that there are a lot of anecdotes of people researching a stock, buying that stock and doing well with that stock. But poor decisions can at times lead to good outcomes... EDIT: Due to some criticism, I want to expand on a few points. So, is homework completely for naught? No!"