Who sets the price and provides the quoted price values for stocks?
"The ""price"" is the price of the last transaction that actually took place. According to Motley Fool wiki: A stock price is determined by what was last paid for it. During market hours (usually weekdays from 9:30AM-4:00PM eastern), a heavily traded issue will see its price change several times per second. A stock's price is, for many purposes, considered unchanged outside of market hours. Roughly speaking, a transaction is executed when an offer to buy matches an offer to sell. These offers are listed in the Order Book for a stock (Example: GOOG at Yahoo Finance).  This is actively updated during trading hours. This lists all the currently active buy (""bid"") and sell (""ask"") orders for a stock, and looks like this:  You'll notice that the stock price (again, the last sale price) will (usually*) be between the highest bid and the lowest ask price. * Exception: When all the buy or sell prices have moved down or up, but no trades have executed yet."
The brokerage executes the transactions you tell them to make on your behalf. Other than acting as your agent for those, and maintaining your account, and charging a fee for the service, they have no involvement -- they do not attempt to predict optimal anything, or hold any assets themselves. The indication is based on the average Buy-Hold-Sell rating of a group of fundamental analysts. The individual analysts provide a Buy, Hold or Sell recommendation based on where the current price of the stock is compared to the perceived value of the stock by the analyst.  Note that this perceived value is based on many assumptions by the analyst and their biased view of the stock. That is why different fundamental analysts provide different values and different recommendations on the same stock. So basically if the stock's price is below the analyst's perceived value it will be given a Buy recommendation, if the price is equal with the perceived value it will be given a Hold recommendation and if the price is more than the perceived value it will be given a Sell recommendation. As the others have said this information IMHO is useless. "Price is decided by what shares are offered at what prices and who blinks first.  The buyer and seller are both trying to find the best offer, for their definition of best, within the constraints then have set on their bid or ask. The seller will sell to the highest bid they can get that they consider acceptable. The buyer will buy from the lowest offer they can get that they consider acceptable. The price -- and whether a sale/purchase happens at all -- depends on what other trades are still available and how long you're willing to wait for one you're happy with, and may be different on one share than another ""at the same time"" if the purchase couldn't be completed with the single best offer and had to buy from multiple offers. This may have been easier to understand in the days of open outcry pit trading, when you could see just how chaotic the process is... but it all boils down to a high-speed version of seeking the best deal in an old-fashioned marketplace where no prices are fixed and every sale requires (or at least offers the opportunity for) negotiation. ""Fred sells it five cents cheaper!"" ""Then why aren't you buying from him?"" ""He's out of stock."" ""Well, when I don't have any, my price is ten cents cheaper."" ""Maybe I won't buy today, or I'll buy elsewhere. ""Maybe I won't sell today. Or maybe someone else will pay my price. Sam looks interested..."" ""Ok, ok. I can offer two cents more."" ""Three. Sam looks really interested."" ""Two and a half, and throw in an apple for Susie."" ""Done."" And the next buyer or seller starts the whole process over again. Open outcry really is just a way of trying to shop around very, very, very fast, and electronic reconciliation speeds it up even more, but it's conceptually the same process -- either seller gets what they're asking, or they adjust and/or the buyer adjusts until they meet, or everyone agrees that there's no agreement and goes home." "Stocks prices are determined whenever a buyer and seller agree to trade at a given price. The company (you use AAPL as an example) doesn't set its own stock price. Rather, the investors set the price every time it trades. There's no ""official"" price -- just the last trade. Likewise, you can offer to trade a stock at whatever price you want: that's the definition of a limit order. You might not find a willing buyer or seller at that price, but you can certainly open an order. Stock quotes that you get from your broker or a finance web site reflect the price as last traded. These quotes are updated throughout the trading day and the frequency and delay varies amongst quote providers. Like Knuckle-Dragger suggests in the comments, there are ways to get real-time quotes. It's often more helpful to think in terms of bid/ask instead of ""official price"". See this question for details." I stock is only worth what someone will pay for it.  If you want to sell it you will get market price which is the bid. "There is one other factor that I haven't seen mentioned here.  It's easy to assume that if you buy a stock, then someone else (another stock owner) must have sold it to you.  This is not true however, because there are people called ""market makers"" whose basic job is to always be available to buy shares from those who wish to sell, and sell shares to those who wish to buy.  They could be selling you shares they just bought from someone else, but they also could simply be issuing shares from the company itself, that have never been bought before. This is a super oversimplified explanation, but hopefully it illustrates my point." "This is a great question precisely because the answer is so complicated. It means you're starting to think in detail about how orders actually get filled / executed rather than looking at stock prices as a mythical ""the market"". ""The market price"" is a somewhat deceptive term. The price at which bids and asks last crossed & filled is the price that prints. I.e. that is what you see on a market price data feed. ] In reality there is a resting queue of orders at various bids & asks on various exchanges.  (source: Larry Harris. A size of 1 is 1H = 100 shares.) So at first your 1000H order will sweep through the standing queue of fills. Let's say you are trading a low-volume stock. And let's say someone from another brokerage has set a limit order at a ridiculous price. Part of your order may sweep through and part of it get filled at a ridiculously high price. Or maybe either the exchange or your broker / execution mechanism somehow will protect you against the really high fill. (Let's say your broker hired GETCO, who guarantees a certain VWAP.) Also people change their bids & asks in response to what they see others do. Your 1000H size will likely be marked as a human counterparty by certain players. Other players might see that order differently. (Let's say it was a 100 000H size. Maybe people will decide you must know something and decide they want to go the same direction as you rather than take the opportunity to exit. And maybe some super-fast players will weave in and out of the filling process itself.) There is more to it because, what if some of the resting asks are on other venues? What if both you and some of the asks match with someone who uses the same broker as you? Not only do exchange rules come into play, but so do national regulations. tl;dr: You will get filled, with price slippage. If you send in a big buy order, it will sweep through the resting asks but also there are complications." "Price targets aren't set day to day, because of market fluctuations are so high from day to day. But in their stock recommendations, brokerage firms will often set price targets for ""one year out.""  These targets aren't set in stone, so use them at your risk." There is trading, and while it can be automated, someone has to define the rules for the automated system.  Why not call that person the manager? A company's stock value is indicative of the market's collective belief of the future of the company. The relationship of between price and book value will vary according to the quality of the company, the category of stock, etc. In extreme cases, say Bank of America, the stock trades at a fraction of book, because BOA's books are a fantasy by most people's reckoning. "4) Finally, do all companies reduce their stock price when they pay a dividend? Are they required to? There seems to be confusion behind this question.  A company does not set the price for their stock, so they can't ""reduce"" it either.  In fact, nobody sets ""the price"" for a stock. The price you see reported is simply the last price that the stock was traded at.  That trade was just one particular trade in a whole sequence of trades.  The price used for the trade is simply the price which the particular buyer and particular seller agreed to for that particular trade.  (No agreement, well then, no trade.)  There's no authority for the price other than the collection of all buyers and sellers. So what happens when Nokia declares a 55 cent dividend?  When they declare there is to be a dividend, they state the record date, which is the date which determines who will get the dividend: the owners of the shares on that date are the people who get the dividend payment.  The stock exchanges need to account for the payment so that investors know who gets it and who doesn't, so they set the ex dividend date, which is the date on which trades of the stock will first trade without the right to receive the dividend payment.  (Ex-dividend is usually about 2 days before record date.)  These dates are established well before they occur so all market participants can know exactly when this change in value will occur. When trading on ex dividend day begins, there is no authority to set a ""different"" price than the previous day's closing price.  What happens is that all (knowledgeable) market participants know that today Nokia is trading without the payment 55 cents that buyers the previous day get.  So what do they do?  They take that into consideration when they make an offer to buy stock, and probably end up offering a price that is about 55 cents less than they would have otherwise.  Similarly, sellers know they will be getting that 55 cents, so when they choose a price to offer their stock at, it will likely be about that much less than they would have asked for otherwise." "The Auction Market is where investors such you and me, as well as Market Makers, buy and sell securities.  The Auction Markets operate with the familiar bid-ask pricing that you see on financial pages such as Google and Yahoo.  The Market Makers are institutions that are there to provide liquidity so that investors can easily buy and sell shares at a ""fair"" price. Market Makers need to have on hand a suitable supply of shares to meet investor demands.  When Market Makers feel the need to either increase or decrease their supply of a particular security quickly, they turn to the Dealer Market. In order to participate in a Dealer Market, you must be designated a Market Maker.  As noted already, Market Makers are dedicated to providing liquidity for the Auction Market in certain securities and therefore require that they have on hand a suitable supply of those securities which they support.  For example, if a Market Maker for Apple shares is low on their supply of Apple shares, then will go the Dealer Market to purchase more Apple shares.  Conversely, if they are holding what they feel are too many Apple shares, they will go to the Dealer Market to sell Apple shares.  The Dealer Market does operate on a bid-ask basis, contrary to your stated understanding. The bid-ask prices quoted on the Dealer Market are more or less identical to those on the Auction Market, except the quote sizes will be generally much larger. This is the case because otherwise, why would a Market Maker offer to sell shares to another Market Maker at a price well below what they could themselves sell them for in the Auction Market.  (And similarly with buy orders.)  If Market Makers are generally holding low quantities of a particular security, this will drive up the price in both the Dealer Market and the Auction Market. Similarly, if Market Makers are generally holding too much of a particular security, this may drive down prices on both the Auction Market and the Dealer Market." "Well, they don't have to enter a market order. I was just saying that for your benefit.   In practice what will really happen is they'll say to themselves   ""I want ABC for no more than 70.00""  The current bid is at 69.60 They'll use a limit order on 10,000 shares. If anyone offers them more than 70.00 the computer program they're using will not accept.  However, the shares won't be bought all at once. A limit order for 10,000 shares will be spit into 1,000 shares at 69.70 and 10,000 for 69.65  The HFT can then make a reasonable guess someone is buying in bulk. So then the HFT sends out a sell order saying ""10 shares at 70.10"". The guy doesn't want that so they do it over again at 70.09  Eventually they notice when the guy accepts at 70.00  So now they knew this guy is willing to pay that. Then HFT buys all the shares they can. ALL SHARES, not just the amount the guy wants. They buy it all at 69.95, which is higher than the 69.70 the guy just paid or whatever.  They then sell it all back to the guy at 70.00  The guy has no choice because all the shares are now gone. He has to pay his highest price.   Once the guy gets his order the HFT just dumps the rest of the shares back at the price they bought them at.  edit: Another way to pull this off is to just literally build your own exchange. Then you can do all of this without any clever tricks. You can just outright give yourself preference over everyone else because you can truly decide what order the trades are being executed." "Here, check out my updated reply above - I added an example that might clarify some of your questions?  Also, to answer the ""to whom"" question, you're signaling those things to the market. By trading at what you believe to be fair value, you're helping the market price all of those ""events"" contained in a futures contract." Depending on what currency the price is quoted in and is originally sold, currency fluctuation can also carry over onto the price in your currency. An example for that would be bitcoin prices which sometimes show heavy ups and downs in one currency, but seem totally stable in another and can be tracked back to changed exchange rates between currencies. Also like others have said, prices on stocks are not actually fixed. You can offer to buy or sell at any price. Only if 2 people want to buy or sell for the same price there will actually be a transaction.