When are equal-weighted index funds / ETFs preferable to market-cap-weighted funds?
In market cap weighted index there is fairly heavy concentration in the largest stocks. The top 10 stocks typically account for about 20% of the S&P 500 index.  In Equal Weight this bias towards large caps is removed. The Market Cap method would be good when large stocks drive the markets. However if the markets are getting driven by Mid Caps and Small caps, the equal weight wins. Historically most big companies start out small and grow big fast in a short span of time. Thus if we were to do Market cap one would have purchased smaller number of shares of the said company as its cap/weight would have been small and when it becomes big we would have purchased the shares at a higher price. However if we were to do equal weight, then as the company grows big one would have more share at a cheaper price and would result in better returns. There is a nice article on this, also gives the comparision of the returns over a period of 10 years, where equal weight index has done good. It does not mean that it would continue. http://www.investopedia.com/articles/exchangetradedfunds/08/index-debate.asp#axzz1RRDCnFre Equal-weight ETFs remove the large cap bias found in most popular indexes. What results behaves very much like a small-cap or mid-cap index. Observe RSP vs IJR over a 5 year period: IJR (iShares S&P SmallCap 600 ETF) vs RSP (Rydex S&P Equal Weight ETF)  I'm not sure if equal-weighting is worth the reduced efficiency. Mid-cap and small-cap funds have lower expenses (%0.20 for IJR vs %0.40 for RSP) and appear to do better over the long run. We don't know if that pattern will continue, but expense is one of the strongest long-term predictors of performance. Equal weighted indexes are not theoretically meant to be less volatile or less risky; they're just a different way to weigh stocks in an index. If you had a problem that hurt small caps more than large caps, an equal weighted index will be hurt more than a market-cap weighted one.  On the other hand, if you consider that second rung companies have come up to replace the top layer, it makes sense to weigh them on par.  History changes on a per-country basis - in India, for instance, the market's so small at the lower-cap end that big money chases only the large caps, which go up more in a liquidity driven move. But in a more secular period (like the last 18 months) we see that smaller caps have outperformed. "As Dheer pointed out, the top ten mega-cap corporations account for a huge part (20%) of your ""S&P 500"" portfolio when weighted proportionally. This is one of the reasons why I have personally avoided the index-fund/etf craze -- I don't really need another mechanism to buy ExxonMobil, IBM and Wal-Mart on my behalf. I like the equal-weight concept -- if I'm investing in a broad sector (Large Cap companies), I want diversification across the entire sector and avoid concentration. The downside to this approach is that there will be more portfolio turnover (and expense), since you're holding more shares of the lower tranches of the index where companies are more apt to churn. (ie. #500 on the index gets replaced by an up and comer). So you're likely to have a higher expense ratio, which matters to many folks."
Life Strategy funds are more appropriate if you want to maintain a specific allocation between stocks and bonds that doesn't automatically adjustment like the Target Retirement funds which have a specific date.  Thus, it may make more sense to take whichever Life Strategy fund seems the most appropriate and ride with it for a while unless you know when you plan to retire and access those funds. In theory, you could use Vanguard's Total Market funds,i.e. Total Stock Market, Total International, and Total Bond, and have your own allocations between stocks and bonds be managed pretty easily and don't forget that the fees can come in a couple of flavors as betterment doesn't specify where the transaction fees for buying the ETFs are coming out just as something to consider. "From http://blog.ometer.com/2008/03/27/index-funds/ , Lots of sensible advisers will tell you to buy index funds, but   importantly, the advice is not simply ""buy index funds.""   There are at least two other critical details: 1) asset allocation   across multiple well-chosen indexes, maintained through regular   rebalancing, and 2) dollar cost averaging (or,   much-more-complex-but-probably-slightly-better, value averaging). The   advice is not to take your single lump sum and buy and hold a   cap-weighted index forever. The advice is an investment   discipline which involves action over time, and an initial   choice among indexes. An index-fund-based   strategy is not completely passive, it involves some active risk   control through rebalancing and averaging. If you'd held a balanced portfolio over the last ten years and rebalanced, and even better if you'd dollar cost averaged, you'd have done fine. Your reaction to the last 10 years incidentally is why I don't believe an almost-all-stocks allocation makes sense for most people even if they're pretty young. More detail in this answer: How would bonds fare if interest rates rose? I think some index fund advocacy and books do people a disservice by focusing too much on the extra cost of active management and why index funds are a good deal.  That point is true, but for most investors, asset allocation, rebalancing, and ""autopilotness"" of their setup are more important to outcome than the expense ratio." In my opinion, the ability to set a sell or buy price is the least of my concerns.  Your question of whether to choose individual stocks vs funds prompts a different issue for me to bring to light. Choosing stocks that beat the market is not simple. In fact, a case can be made for the fact that the average fund lags the market by more and more over time. In the end, conceding that fact and going with the lowest cost funds or ETFs will beat 90% of investors over time. I think that assuming that you're not looking to trade the fund, an index Mutual Fund is a better overall value than an ETF. The cost difference is negligible, and the ability to dollar-cost average future contributions with no transaction costs. You also have to be careful with ETFs; the spreads are wide on a low-volume fund and some ETFs are going more exotic things that can burn a novice investor. Track two similar funds (say Vanguard Total Stock Market: VTSMX and Vanguard Total Stock Market ETF: VTI), you'll see that they track similarly.  If you are a more sophisticated investor, ETFs give you the ability to use options to hedge against declines in value without having to incur capital gains from the sale of the fund. (ie. 20 years from now, can use puts to make up for short-term losses instead of selling shares to avoid losses)  For most retail investors, I think you really need to justify using ETFs versus mutual funds. If anything, the limitations of mutual funds (no intra-day trading, no options, etc) discourage speculative behavior that is ultimately not in your best interest. EDIT: Since this answer was written, many brokers have begun offering a suite of ETFs with no transaction fees. That may push the cost equation over to support Index ETFs over Index Mutual Funds, particularly if it's a big ETF with narrow spreads.. There are a few ETFs that fall into the money market category: SHV, BIL, PVI and MINT.  What normally looks like an insignificant expense ratio looks pretty big when compared to the small yields offered by these funds. The same holds for the spread and transaction fees. For that reason, I'm not sure if the fund route is worth it. There are the EDHEC-risk indices based on similar hedge fund types but even then an IR would give you performance relative to the competition, which is not useful for most hf's as investors don't say I want to buy a global macro fund, vs a stat arb fund, investors say I want to pay a guy to give me more money!  Most investors don't care how the OTHER funds did or where the market went, they want that NAV to go always up , which is why a modified sharpe is probably better. In general, the goal of an S&P 500 index fund is to replicate the performance of the S&P 500 Index.  To do this, the fund will buy the same stocks in the same proportions as the weighting of the Index. The S&P 500 Index is free-float capitalization weighted.  This means that the higher capitalization stocks (based on publicly traded shares only) are more heavily weighted and factor into the Index value more heavily than the smaller capitalization stocks, or the stocks that have a smaller publicly traded value.  For example, companies like Apple, ExxonMobil, and Microsoft have a much larger weight in the index value than smaller companies. Alternatively, there are some S&P index funds that are equal-weighted.  In these funds, the managers have chosen to purchase all 500 of the stocks in the index, but in equal proportions instead of the weighted proportions of the index.  These equal-weighted funds will not as closely match the index price as the traditionally weighted index funds.  Instead, they might do better or worse than the index, depending on how the individual stocks do. You'll need to look at the prospectus of the index funds you are interested in to see which approach the fund is taking. In my opinion, if you are doing long-term investing, this is a non-issue.  The difference of hours in being able to trade an ETF during the day vs. only being able to trade a traditional mutual fund at day-end is irrelevant if you are holding the investment for a long time. If you are engaging in day trading, market timing, or other advanced/controversial trading practices, then I suppose it could make a difference. For the way I invest (index funds, long-term, set-it-and-forget-it), ETFs have no advantage over traditional mutual funds. Some economist please ELI5 what I’m missing here. In the equities market, it is considered an economic benefit when exchanges settle trades in smaller increments. When we went from eighths to decimal, for example. How is that direction into smaller divisible units different from facilitating trade with pennies for economic goods? You cannot do a 1031 exchange with stocks, bonds, mutual funds, or ETFs.  There really isn't much difference between an ETF and its equivalent index mutual fund. Both will have minimal capital gains distributions. I would not recommend selling an index mutual fund and taking a short-term capital gain just to buy the equivalent ETF. It might mean Equal Weighted based on Market cap, rather than Price?  For instance, All of MSCIs indexes are based on security's market cap, but then a factor is applied to give them equal weights once a quarter.  From then on, weights will fluctuate based on market cap performance.    Edit.  Not sure why down voted, but you can check here http://www.msci.com/eqb/methodology/meth_docs/MSCI_Equal_Weighted_Indices_Methodology_May11.pdf  So each quarter weights are set to be equal, but then between quarters the weights fluctuate due to performance "Note that an index fund may not be able to precisely mirror the index it's tracking. If enough many people invest enough money into funds based on that index, there may not always be sufficient shares available of every stock included in the index for the fund to both accept additional investment and track the index precisely.  This is one of the places where the details of one index fund may differ from another even when they're following the same index. IDEALLY they ought to deliver the same returns, but in practical terms they're going to diverge a bit. (Personally, as long as I'm getting ""market rate of return"" or better on average across all my funds, at a risk I'm comfortable with, I honestly don't care enough to try to optimize it further. Pick a distribution based on some stochastic modelling tools, rebalance periodically to maintain that distribution, and otherwise ignore it. That's very much to the taste of someone like me who wants the savings to work for him rather than vice versa.)" ETFs offer the flexibility of stocks while retaining many of the benefits of mutual funds. Since an ETF is an actual fund, it has the diversification of its potentially many underlying securities. You can find ETFs with stocks at various market caps and style categories. You can have bond or mixed ETFs. You can even get ETFs with equal or fundamental weighting. In short, all the variety benefits of mutual funds. ETFs are typically much less expensive than mutual funds both in terms of management fees (expense ratio) and taxable gains. Most of them are not actively managed; instead they follow an index and therefore have a low turnover. A mutual fund may actively trade and, if not balanced with a loss, will generate capital gains that you pay taxes on. An ETF will produce gains only when shifting to keep inline with the index or you yourself sell. As a reminder: while expense ratio always matters, capital gains and dividends don't matter if the ETF or mutual fund is in a tax-advantaged account. ETFs have no load fees. Instead, because you trade it like a stock, you will pay a commission. Commissions are straight, up-front and perfectly clear. Much easier to understand than the various ways funds might charge you. There are no account minimums to entry with ETFs, but you will need to buy complete shares. Only a few places allow partial shares. It is generally harder to dollar-cost average into an ETF with regular automated investments. Also, like trading stocks, you can do those fancy things like selling short, buying on margin, options, etc. And you can pay attention to the price fluctuations throughout the day if you really want to. Things to make you pause: if you buy (no-load) mutual funds through the parent company, you'll get them at no commission. Many brokerages have No Transaction Fee (NTF) agreements with companies so that you can buy many funds for free. Still look out for that expense ratio though (which is probably paying for that NTF advantage). As sort of a middle ground: index funds can have very low expense ratios, track the same index as an ETF, can be tax-efficient or tax-managed, free to purchase, easy to dollar-cost average and easier to automate/understand. Further reading: Let's simplify things by assuming you only own 2 stocks. By owning VOO and VTI, you're overweight on large- and mid-cap stocks relative to the market composition. Likewise, by owning VTI and VT, you're overweight on U.S. stocks; conversely, by owning VXUS and VT, you're overweight on non-U.S. stocks. These are all perfectly fine positions to take if that's what you intend and have justification for. For example, if you're in the U.S., it may be a good idea to hold more U.S. stocks than VT because of currency risk. But 4 equity index ETFs is probably overcomplicating things. It is perfectly fine to hold only VTI and VXUS because these funds comprise thousands of stocks and thus give you sufficient diversification. I would recommend holding those 2 ETFs based on a domestic/international allocation that makes sense to you (Vanguard recommends 40% of your stock allocation to be international), and if for some reason you want to be overweight in large- and mid-cap companies, throw in VOO. You can use Morningstar X-Ray to look at your proposed portfolio and find your optimal mix of geographic and stock style allocation. Can I pay $12,000 extra once a year or $1000 every month - which option is better? Depends when. If you mean 12K now vs 1K a month over the next 12 months, repeating this each year, now wins. If you mean saving 1K a month for 12 months then doing a lumpsum, the 1K a month wins. Basically, a sooner payment saves you more money than a later payment. The first option does sound better, but for a 30 year mortgage, is it that significant? Your number one issue is that you have a thirty year mortgage. The interest you pay on it is monstrous. For the 30 year term, you pay around 500K in interest. A 15-year mortgage is 300K cheaper (only 200K in interest will be paid). The monthly payment would be 1250 more. How much money and years on a mortgage can I save? When is the best time to pay? At the end of each year? You can knock off about a dozen years. Save I think ~250K. You can find mortgage calculators online or talk to your mortgage advisor to play around with the numbers.