What exactly do fund managers of index trackers do?
"From How are indexes weighted?: Market-capitalization weighted indexes (or market cap- or cap-weighted   indexes) weight their securities by market value as measured by   capitalization: that is, current security price * outstanding shares.   The vast majority of equity indexes today are cap-weighted, including   the S&P 500 and the FTSE 100. In a cap-weighted index, changes in the   market value of larger securities move the index’s overall trajectory   more than those of smaller ones. If the fund you are referencing is an ETF then there may be some work to do to figure out what underlying securities to use when handling Creation and Redemption units as an ETF will generally have shares created in 50,000 shares at a time through Authorized Participants. If the fund you are referencing is an open-end fund then there is still cash flows to manage in the fund as the fund has create and redeem shares in on a daily basis. Note in both cases that there can be updates to an index such as quarterly rebalancing of outstanding share counts, changes in members because of mergers, acquisitions or spin-offs and possibly a few other factors. How to Beat the Benchmark has a piece that may also be useful here for those indices with many members from 1998: As you can see, its TE is also persistently positive, but if anything   seems to be declining over time. In fact, the average net TE for the   whole period is +0.155% per month, or an astounding +1.88% pa net   after expenses. The fund expense ratio is 0.61% annually, for a   whopping before expense TE of +2.5% annually. This is once again   highly statistically significant, with p values of 0.015 after   expenses and 0.0022 before expenses. (The SD of the TE is higher for   DFSCX than for NAESX, lowering its degree of statistical   significance.) It is remarkable enough for any fund to beat its   benchmark by 2.5% annually over 17 years, but it is downright eerie to   see this done by an index fund. To complete the picture, since 1992 the Vanguard Extended Index Fund   has beaten its benchmark (the Wilshire 4500) by 0.56% per year after   expenses (0.81% net of expenses), and even the Vanguard Index Trust   500 has beaten its benchmark by a razor thin 0.08% annually before   (but not after) expenses in the same period. So what is going on here? A hint is found in DFA's 1996 Reference   Guide: The 9-10 Portfolio captures the return behavior of U.S. small company stocks as identified by Rolf Banz and other academic   researchers. Dimensional employs a ""patient buyer"" discount block   trading strategy which has resulted in negative total trading costs,   despite the poor liquidity of small company stocks. Beginning in 1982,   Ibbotson Associates of Chicago has used the 9-10 Portfolio results to   calculate the performance of small company stocks for their Stocks,   Bonds, Bills, and Inflation yearbook. A small cap index fund cannot possibly own all of the thousands of   stocks in its benchmark; instead it owns a ""representative sample.""   Further, these stocks are usually thinly traded, with wide bid/ask   spreads. In essence what the folks at DFA learned was that they could   tell the market makers in these stocks, ""Look old chaps, we don't have   to own your stock, and unless you let us inside your spread, we'll   pitch our tents elsewhere. Further, we're prepared to wait until a   motivated seller wishes to unload a large block."" In a sense, this   gives the fund the luxury of picking and choosing stocks at prices   more favorable than generally available. Hence, higher long term   returns. It appears that Vanguard did not tumble onto this until a   decade later, but tumble they did. To complete the picture, this strategy works best in the thinnest   markets, so the excess returns are greatest in the smallest stocks,   which is why the positive TE is greatest for the DFA 9-10 Fund, less   in the Vanguard Small Cap Fund, less still in the Vanguard Index   Extended Fund, and minuscule with the S&P500. There are some who say the biggest joke in the world of finance is the   idea of value added active management. If so, then the punch line   seems to be this: If you really want to beat the indexes, then you   gotta buy an index fund."
You can check the website for the company that manages the fund. For example, take the iShares Nasdaq Biotechnology ETF (IBB). iShares publishes the complete list of the fund's holdings on their website. This information isn't always easy to find or available, but it's a place to start. For some index funds, you should just be able to look up the index the fund is trying to match. This won't be perfect (take Vanguard's S&P 500 ETF (VOO); the fund holds 503 stocks, while the S&P 500 index is comprised of exactly 500), but once again, it's a place to start. A few more points to keep in mind. Remember that many ETF's, including equity ETF's, will hold a small portion of their assets in cash or cash-equivalent instruments to assist with rebalancing. For index funds, this may not be reflected in the index itself, and it may not show up in the list of holdings. VOO is an example of this. However, that information is usually available in the fund's prospectus or the fund's site. Also, I doubt that many stock ETF's, at least index funds, change their asset allocations all that frequently. The amounts may change slightly, but depending on the size of their holdings in a given stock, it's unlikely that the fund's manager would drop it entirely. "You cannot actually buy an index in the true sense of the word.  An index is created and maintained by a company like Standard and Poor's who licenses the use of the index to firms like Vanguard.  The S&P 500 is an example of an index.  The S&P 500 ""index includes 500 leading companies"", many finical companies sell products which track to this index.  The two most popular products which track to indexes are Mutual Funds (as called Index Funds and Index Mutual Funds) and Exchange Traded Funds (as called ETFs).  Each Index Mutual Fund or ETF has an index which it tracks against, meaning they hold securities which make up a sample of the index (some indexes like bond indexes are very hard to hold everything that makes them up). Looking at the Vanguard S&P 500 Index Mutual Fund (ticker VFINX) we see that it tracks against the S&P 500 index.  Looking at its holdings we see the 500-ish stocks that it holds along with a small amount of bonds and cash to handle cash flow for people buying and sell shares.  If we look at the Vanguard S&P 500 ETF (ticker VOO) we see that it also tracks against the S&P 500 index.  Looking at its holdings we see they are very similar to the similar Index Mutual Fund. Other companies like T. Rowe Price have similar offering.  Look at the T. Rowe Price Equity Index 500 Fund (ticker PREIX) its holdings in stocks are the same as the similar Vanguard fund and like the Vanguard fund it also holds a small amount of bonds and cash to handle cash flow. The only real difference between different products which track against the same index is in the expense ratio (fees for managing the fund) and in the small differences in the execution of the funds.  For the most part execution of the funds do not really matter to most people (it has a very small effect), what matters is the expense (the fees paid to own the fund).  If we just compare the expense ratio of the Vanguard and T. Rowe Price funds we see (as of 27 Feb 2016) Vanguard has an expense ratio of 0.17% for it Index Mutual Fund and 0.05% for its ETF, while T. Rowe Price has an expense ratio of 0.27%.  These are just the fees for the funds themselves, there are also account maintenance fees (which normally go down as the amount of money you have invested at a firm go up) and in the case of ETFs execution cost (cost to trade the shares along with the difference between the bid and ask on the shares). If you are just starting out I would say going with the Index Mutual Fund would easier and most likely would cost less over-all if you are buying a small amount of shares every month.  When choosing a company look at the expense ratio on the funds and the account maintenance fees (along with the account minimals).  Vanguard is well known for having low fees and they in fact were the first to offer Index Mutual Funds. For more info on the S&P 500 index see also this Investopedia entry on the S&P 500 index. Do not worry if this is all a bit confusing it is to most people (myself included) at first." "First off, the answer to your question is something EVERYONE would like to know. There are fund managers at Fidelity who will a pay $100 million fee to someone who can tell them a ""safe"" way to earn interest. The first thing to decide, is do you want to save money, or invest money. If you just want to save your money, you can keep it in cash, certificates of deposit or gold. Each has its advantages and disadvantages. For example, gold tends to hold its value over time and will always have value. Even if Russia invades Switzerland and the Swiss Franc becomes worthless, your gold will still be useful and spendable. As Alan Greenspan famously wrote long ago, ""Gold is always accepted."" If you want to invest money and make it grow, yet still have the money ""fluent"" which I assume means liquid, your main option is a major equity, since those can be readily bought and sold. I know in your question you are reluctant to put your money at the ""mercy"" of one stock, but the criteria you have listed match up with an equity investment, so if you want to meet your goals, you are going to have to come to terms with your fears and buy a stock. Find a good blue chip stock that is in an industry with positive prospects. Stay away from stuff that is sexy or hyped. Focus on just one stock--that way you can research it to death. The better you understand what you are buying, the greater the chance of success. Zurich Financial Services is a very solid company right now in a nice, boring, highly profitable business. Might fit your needs perfectly. They were founded in 1872, one of the safest equities you will find. Nestle is another option. Roche is another. If you want something a little more risky consider Georg Fischer. Anyway, what I can tell you, is that your goals match up with a blue chip equity as the logical type of investment. Note on Diversification Many financial advisors will advise you to ""diversify"", for example, by investing in many stocks instead of just one, or even by buying funds that are invested in hundreds of stocks, or indexes that are invested in the whole market. I disagree with this philosophy. Would you go into a casino and divide your money, putting a small portion on each game? No, it is a bad idea because most of the games have poor returns. Yet, that is exactly what you do when you diversify. It is a false sense of safety. The proper thing to do is exactly what you would do if forced to bet in casino: find the game with the best return, get as good as you can at that game, and play just that one game. That is the proper and smart thing to do." "The ""ideal world"" index fund of any asset class is a perfect percentage holding of all underlying assets with immediate rebalancing that aligns to every change in the index weighting while trading in a fully liquid market with zero transaction costs. One finance text book that describes this is Introduction to Finance: Markets, Investments, and Financial Management, see chapter 11.  Practically, the transaction costs and liquidity make this unworkable. There are several deviations between what the ""ideal world algorithm"" (""the algorithm"") says you should do and what is actually done. Each of these items addresses a real-world solution to various costs of managing a passive index fund. (And they are good solutions.) However, any deviation from the ideal index fund will have a risk. An investor evaluating their choices is left to pick the lowest fees with the least deviation from the ideal index fund. (It is customary to ignore whether the results are in excess or deficit to the ideal). So your formula is: This is also described in the above book." "Index funds do leech a ""free ride"" on the coattails of active traders.  Consider what would happen if literally everyone bought index funds.  For a company there would be no motivation to excel. Get listed; all the index funds are forced to buy your stock; now sit on your derriere playing Freecell, or otherwise scam/loot the company.  Go bankrupt. Rinse wash repeat.  This ""who cares who John Galt is"" philosophy would kill the economy dead.   Somebody has to actually buy stocks based on research, analysis and value.  Company managers need to actively fear, respect and court those people.  They don't need to be mutual-fund managers, but they do need to be somebody.  Maybe activist investors like Warren Buffett will suffice.  Maybe retirement fund or endowment managers like CalPERS or Harvard can do this.  Better be somebody!  I'm all for index funds... Just saying only a fraction of the market's capital can be in index funds before it starts into a tragedy of the commons." News-driven investors tend to be very short-term focussed investors. They often trade by using index futures (on the S&P 500 index for instance). "They do but you're missing some calculations needed to gain an understanding. Intro To Stock Index Weighting Methods notes in part: Market cap is the most common weighting method used by an index.   Market cap or market capitalization is the standard way to measure the   size of the company. You might have heard of large, mid, or small cap   stocks? Large cap stocks carry a higher weighting in this index. And   most of the major indices, like the S&P 500, use the market cap   weighting method. Stocks are weighted by the proportion of their market cap to the total   market cap of all the stocks in the index. As a stock’s price and   market cap rises, it gains a bigger weighting in the index. In turn   the opposite, lower stock price and market cap, pushes its weighting   down in the index.  Pros Proponents argue that large companies have a bigger effect on the   economy and are more widely owned. So they should have a bigger   representation when measuring the performance of the market. Which is   true. Cons It doesn’t make sense as an investment strategy. According to a market   cap weighted index, investors would buy more of a stock as its price   rises and sell the stock as the price falls. This is the exact   opposite of the buy low, sell high mentality investors should use. Eventually, you would have more money in overpriced stocks and less in   underpriced stocks. Yet most index funds follow this weighting method. Thus, there was likely a point in time where the S & P 500's initial sum was equated to a specific value though this is the part you may be missing here. Also, how do you handle when constituents change over time? For example, suppose in the S & P 500 that a $100,000,000 company is taken out and replaced with a $10,000,000,000 company that shouldn't suddenly make the index jump by a bunch of points because the underlying security was swapped or would you be cool with there being jumps when companies change or shares outstanding are rebalanced? Consider carefully how you answer that question. In terms of histories, Dow Jones Industrial Average and S & P 500 Index would be covered on Wikipedia where from the latter link: The ""Composite Index"",[13] as the S&P 500 was first called when it   introduced its first stock index in 1923, began tracking a small   number of stocks. Three years later in 1926, the Composite Index   expanded to 90 stocks and then in 1957 it expanded to its current   500.[13] Standard & Poor's, a company that doles out financial information and analysis, was founded in 1860 by Henry Varnum Poor. In   1941 Poor's Publishing (Henry Varnum Poor's original company) merged   with Standard Statistics (founded in 1906 as the Standard Statistics   Bureau) and therein assumed the name Standard and Poor's Corporation.   The S&P 500 index in its present form began on March 4, 1957.   Technology has allowed the index to be calculated and disseminated in   real time. The S&P 500 is widely used as a measure of the general   level of stock prices, as it includes both growth stocks and value   stocks. In September 1962, Ultronic Systems Corp. entered into an agreement   with Standard and Poor's. Under the terms of this agreement, Ultronics   computed the S&P 500 Stock Composite Index, the 425 Stock Industrial   Index, the 50 Stock Utility Index, and the 25 Stock Rail Index.   Throughout the market day these statistics were furnished to Standard   & Poor's. In addition, Ultronics also computed and reported the 94 S&P   sub-indexes.[14] There are also articles like Business Insider that have this graphic that may be interesting: S & P changes over the years The makeup of the S&P 500 is constantly changing notes in part: ""In most years 25 to 30 stocks in the S&P 500 are replaced,"" said   David Blitzer, S&P's Chairman of the Index Committee. And while there   are strict guidelines for what companies are added, the final decision   and timing of that decision depends on what's going through the heads   of a handful of people employed by Dow Jones." In my experiences most hedge funds won't have a benchmark in their mandate and are evaluated based upon absolute returns.  Their benchmarks are generally cash + x basis points.  So, no attribution and no IR.  No experience at all with CTA's though, so not sure how things are there.