What do brokerage firms do?
Off the top of my head, a broker: While there are stock exchanges that offer direct market access (DMA), they (nearly) always want a broker as well to back the first two points I made.  In that case the broker merely routes your orders directly to the exchange and acts as a custodian, but of course the details heavily depend on the exchange you're talking about. This might give you some insight: Direct Market Access - London Stock Exchange You can get direct market access (DMA) but you have to pay for data, as this is part of the exchanges data plan, and there are plenty of other fees that are passed straight down to you. Your clearing firm also has fees that are passed on to you. In general you are looking at $150 a month on the low side, in data and software fees. If you wanted pure access, NASDAQ alone charges $6,000 a month last I checked. The different routes data routes to the exchange all have different rules, and they give you rebates for some kinds of orders in some conditions.  Brokers nowadays usually assume this responsibility (including collecting the rebates lol), at the very least, and charge an average price for routing your orders, a price that fits into their business plan and their target audience. Hope that helps.
"What you're thinking of is more market making kind of activity, HFT algo's thrive on this; having information faster than anyone else. This type of activity could also likely be lumped into what is considered top-down analysis as opposed to bottom-up (which is what most mutual fund equity research involves). Again, the more important aspect is, what does the company you are applying to use!  Top-down analysis means that you are forecasting the revenue drivers for a company using macro-economic analysis. For example, let's say I'm investing in Chinese cement manufacturer's, what implications does Chinese interest rate policy have on infra-structure expansion and how does that drive revenue for this specific company. I might then look at margins, etc. to get an EPS estimate. Part of this could fall into secular  investing, too. Let's say I like LCD panel glass because of this consortium, I might take a look at 5 companies and then find the ones I think would benefit most from this. The problem with top-down is it tends not to be as much of a deep-dive, and its hard to pick individual companies because of it. Bottom-up tends to be more analytical and is what most pitches would be based around. The most important thing I'm not saying one is right or wrong, they are just different, and every investor has their own style.  Bottom-up analysis, which would be closer to what an equity research analyst would be doing on the sell-side, is analyzing what bottom-line indicators drive revenue and how are those expanding. For example, lets say I'm looking at search providers (i.e. Baidu, Google, Yahoo, etc.) I'd be looking at Cost-Per-Thousand-Clicks (CPTC) and number of clicks on the website. Multiply the two and I get revenue (very simplified version) for clicks business. I might then also forecast other revenue driving segments and try to understand how they are growing/pricing at an individual segment level (i.e. business services or mobile advertising). I'd then break down costs/margins for each segment and forecast those out. I could then get a forward EPS, get a range of multiples I believe it could trade in (i.e. I think the multiple will trade up/down), to get a target price. Also, I would likely do a DCF analysis on forward earnings to get a ""fair market value,"" and then try to triangulate a price. I would also be looking at stuff like management teams and industry trends, too, but bottom line, I'm pitching a company because I think it is undervalued and will outperform competitors **in the long run**. This type of work tends to be more research oriented and is what most (not all) mutual funds use when analyzing companies. Since mutual funds tend to have longer holding periods (2-10 years), as opposed to short-term, it's harder to justify investing in a company only because it has a short-term catalyst. Anecdotally, it's also easier to present in a written thesis because the numbers tend to be more concrete and easier to forecast than top-down (which have wider target ranges).  Your thought process that catalyst + industry context = market beating returns isn't wrong, it's just that every company thinks about investing differently, and it's important to tailor the report to that group's style." A firm is a separate legal person from its shareholders or owners (but doesn't get invited to parties much). Owners invest capital to get shares in the firm or may get shares for investing time, effort etc. but those shares are on a limited liability basis. That means that shareholders are only liable up to the value of their shares and that the firm itself is responsible for any expenses or liabilities. The firm will have working capital from its initial investors (i.e. any capital invested to get shares) and can borrow money on the bond market or issue new shares to cover outgoings. Share ownership simply entitles the owner to a proportion of the residual equity of the company and voting rights (for non-prefered equity). In a firm that I previously worked for, for example, one of the partners owned 51% of the firm but put up 100% of the firm's equity capital. The other partner owned 49% and provided 90% of the intellectual capital of the firm. They both took decisions equally. The distribution of ownership should, therefore, have no bearing on who finances deals. The owners (or managers in larger firms) should decide together how to use the company's capital for spending because it is exactly that; the company's capital; not any one of the investor's. Limited liability of owners is one of the major benefits of forming a company. Gotcha.  So they essentially are just your normal dude that puts money in the stock market, just bigger money.  For example, I may buy a few stocks in Apple in the hopes that I can exit at a higher price and have higher dividends.  Those big investors are doing the same thing for the 2 benefits I said earlier, but they have more money to invest.  Or do they get other benefits that us average stock holders dont get?  Thanks for the first reply. The money is paid to investors who bought those mortgage backed securities. The company that services those loans is responsible for making sure the money is paid to the right investors "Brokerages offer you the convenience of buying and selling financial products. They are usually not exchanges themselves, but they can be. Typically there is an exchange and the broker sends orders to that exchange. The main benefit that brokers offer is a simpler commission structure. Not all brokers have their own liquidity, but brokers can have their own allotment of shares of a stock, for example, that they will sell you when you make an order, so that you get what you want faster. Regarding accounts at the exchanges to track actual ownership and transfer of assets, it is not safe to assume thats how that works. There are a lot of shortcomings in how the actual exchange works, since the settlement time is 1 - 3 business days, depending on the product (so upwards of 5 to 6 actual days). In a fast market, the asset can change hands many many times making the accounting completely incorrect for extended time periods. Better to not worry about that part, but if you'd like to read more about how that is regulated look up ""Failure To Deliver"" regulations on short selling to get a better understanding of market microstructure. It is a very antiquated system." "The mortgage broker makes money from the mortgage originator, and from closing fees.  All the broker does is the grunt work, mostly paperwork and credit record evaluation.  But there's a lot of it.  They make their money by navigating the morass of regulations (federal, state, local) and finding you the best mortgage from the mortgage lender(s) they represent.  They don't have any capital involved in the deal.  Just sweat equity. Mortgage originator is the one who put up the capital for you to borrow.  They're the ones who get most of the payments you send in.  They sell the mortgage if they receive what they consider an equitable offer.  Keep in mind that the mortgage, from the lender's point of view, is made up of three parts.  The capital expenditure, the collateral, and the cashflow.  The present value of the cashflow at the rate of the loan is greater than the capital expenditure.  Any offer between those two numbers is 'in the money' for them, and the next owner, assuming no default.  But the collateral makes up for the chance of default, to an extent. There's also a mortgage servicing company in many cases.  This doesn't have to be the current holder of the loan. Study ""the time value of money"", and pay close attention to the parts about present value, future value, and cash flow and how to compare these." Here are a couple of articles that can help highlight the differences between a broker and an online investment service, which seems to be part of the question that you're asking. Pay attention to the references at the end of this link. http://finance.zacks.com/online-investing-vs-personal-broker-6720.html Investopedia also highlights some of the costs and benefits of each side, broke and online investment services. http://www.investopedia.com/university/broker/ To directly answer your question, a broker may do anything from using a website to making a phone call to submitting some other form of documentation. It is unlikely that he is talking directly to someone on the trading floor, as the volume traded there is enormous. I will answer my own question. After calling my broker, they explained me this: The way I would use it is, every trade done by a broker has a client side and a street side.  The client side is for their brokerage account, and the street side is whoever they traded with Say, John Doe calls me at Charles Schwab and wants to buy 100 IBM.  I look at the market and decide that the best execution is on Arca.  I trade on Arca for the client.  Then, I book a client side trade into his account, and a street side trade against Arca.  If I myself was a dealer in IBM and executed against my inventory, the street side would basically be internal, booking a trade against my account. "A ""market maker"" is someone that is contractually bound, by the exchange, to provide both bid and ask prices for a given volume (e.g. 5000 shares). A single market maker usually covers many stocks, and a single stock is usually covered by many market makers. The NYSE has ""specialists"" that are market makers that also performed a few other roles in the management of trading for a stock, and usually a single issue on the NYSE is covered by only one market maker.  Market makers are often middlemen between brokers (ignoring stuff like dark pools, and the fact that brokers will often trade stocks internally among their own clients before going to the exchange).  Historically, the market makers gave up buy/sell discretion in exchange for being the ""go-to guys"" for anyone wanting to trade in that stock. When you told your broker to buy a stock for you, he didn't hook you up with another retail investor; he went to the market maker. Market makers would also sometimes find investors willing to step in when more liquidity was needed for a security. They were like other floor traders; they hung out on the exchange floors and interacted with traders to buy and sell stocks. Traders came to them when they wanted to buy one of the specialist's issues. There was no public order book; just ticker tape and a quote. It was up to the market maker to maintain that order book.  Since they are effectively forbidden from being one-sided traders in a security, their profit comes from the bid-ask spread. Being the counter-party to almost every trade, they'd make profit from always selling above where they were buying. (Except when the price moved quickly -- the downside to this arrangement.) ""The spread goes to the market maker"" is just stating that the profit implicit in the spread gets consumed by the market maker. With the switch to ECNs, the role of the market maker has changed. For example, ForEx trading firms tend to act as market makers to their customers. On ECNs, the invisible, anonymous guy at the other end of most trades is often a market maker, still performing his traditional role. Yet brokers can interact directly with each other now, rather than relying on the market maker's book. With modern online investing and public order books, retail investors might even be trading directly with each other. Market makers are still out there; in part, they perform a service sold by an Exchange to the companies that choose to be listed on that exchange. That service has changed to helping tamp volatility during normal high-volatility periods (such as at open and close)." "Private equity firms have a unique structure: The general partners (GP's) of the firm create funds and manage the investments of those funds.  Limited partners (LP's) contribute the capital to the funds, pay fees to the GP's, and then make money when the funds' assets grow. I believe the article is saying that ultra high net worth individuals participate in the real estate market by hiring someone to act as a general partner and manage the real estate assets.  They and their friends contribute the cash and get shares in the resulting fund. Usually this GP/LP structure is used when the funds purchase or invest in private companies, which is why it is referred to as ""private equity structure,"" but the same structure can be used to purchase and manage pools of real estate or any other investment asset." "Lending of shares happens in the background. Those who have lent them out are not aware that they have been lent out, nor when they are returned. The borrowers have to pay any dividends to the lenders and in the end the borrowers get their stock back. If you read the fine print on the account agreement for a margin account, you will see that you have given the brokerage the permission to silently loan your stocks out.  Since the lending has no financial impact on your portfolio, there's no particular reason to know and no particular protection required.  Actually, brokers typically don't bother going through the work of finding an actual stock to borrow.  As long as lots of their customers have stocks to lend and not that many people have sold short, they just assume there is no problem and keep track of how many are long and short without designating which stocks are borrowed from whom. When a stock becomes hard to borrow because of liquidity issues or because many people are shorting it, the brokerage will actually start locating individual shares to borrow, which is a more time-consuming and costly procedure.  Usually this involves the short seller actually talking to the broker on the phone rather than just clicking ""sell.""" They will make money from brokerage as usual and also from the interest they charge you for lending you the money for you to buy your shares on margin. In other words you will be paying interest on the $30,000 you borrowed from your broker. Also, as per Chris's comment, if you are shorting securities through your margin account, your broker would charge you a fee for lending you the securities to short. "Sure, it doesn't, but realistically they can't/shouldn't do anything about it in their index funds, because then they're just another stock picker, trying to gauge which companies are going to do best.  Their funds not all being indexes is what I was getting at with my original question. How much leeway do they have in their definitions of other funds? IE, if they had a dividend fund that included all large cap dividend paying stocks above 3% yield, they couldn't take out Shell just because of climate risk without fundamentally changing what the fund is. But if it's just ""income fund"" then they can do whatever in that space." how many transactions per year do you intend? Mixing the funds is an issue for the reasons stated.  But. I have a similar situation managing money for others, and the solution was a power of attorney. When I sign into my brokerage account, I see these other accounts and can trade them, but the owners get their own tax reporting.