Why is silver so volatile compared to the S&P 500?
The S&P 500 represents a broadly diversified basket of stocks.  Silver is a single metal.  If all else is equal, more diversification means less volatility.  A better comparison would be the S&P 500 vs. a commodities index, or silver vs. some individual stock. Silver is a commodity. It's valuable for certain kinds of manufacturing, jewelry, and as a speculative financial instrument or hedge against the dollar. The S&P 500 includes companies which make money off of mining, manufacturing, medicine, media, technology, banking, dining, agriculture... There's a lot more variety there.
"Brendan, The short answer is no, there is no need to get into any other funds. For all intents and purposes the S&P 500 is ""The Stock Market"". The news media may quote the Dow when the market reaches new highs or crashes but all of the Dow 30 stocks are included in the S&P 500.  The S&P is also marketcap weighted, which means that it owns in higher proportion the big ""Blue Chip"" stocks more than the smaller less known companies. To explain, the top 10 holdings in the S&P represent 18% of the total index, while the bottom 10 only represent 0.17% (less than 1 percent). They do have an equal weighted S&P in which all 500 companies represent only 1/500th of the index and that is technically even more diversified but in actuality it makes it more volatile because it has a higher concentration of those smaller less known companies. So it will tend to perform better during up markets and worse during down markets. As far as diversification into different asset classes or other countries, that's non-sense. The S&P 500 has companies in it that give you that exposure. For example, it includes companies that directly benefit from rising oil prices, rising gold prices, etc known as the Energy and Materials sector. It also includes companies that own malls, apartment complexes, etc. known as the Real Estate sector. And as far as other countries, most of the companies in the S&P are multi-national companies, meaning that they do business over seas in many parts of the world. Apple and FaceBook for example sell their products in many different countries. So you don't need to invest any of your money into an Emerging Market fund or an Asia Fund because most of our companies are already doing business in those parts of the world. Likewise, you don't need to specifically invest into a real estate or gold fund.  As far as bonds go, if you're in your twenties you have no need for them either. Why, because the S&P 500 also pays you dividends and these dividends grow over time. So for example, if Microsoft increases its dividend payment by 100% over a ten year period , all of the shares you buy today at a 2.5% yield will, in 10 years, have a higher 5% yield. A bond on the other hand will never increase its yield over time. If it pays out 4%, that's all it will ever pay. You want to invest because you want to grow your money and if you want to invest passively the fastest way to do that is through index ETFs like the $SPY, $IVV, and $RSP. Also look into the $XIV, it's an inverse VIX ETF, it moves 5x faster than the S&P in the same direction. If you want to actively trade your money, you can grow it even faster by getting into things like options, highly volatile penny stocks, shorting stocks, and futures. Don't get involved in FX or currency trading, unless it through futures." "I'm in a similar situation. First, a 529 plan can be use for ""qualifying"" international schools.  There are 336 for 2015, which includes many well known schools but also excludes many schools, especially lower level or vocational schools and schools in non-English speaking countries. I ran 3 scenarios to see what the impact would be if you invested $3000 a year for 14 years in something tracking the S&P 500 Index: For each of these scenarios, I considered 3 cases: a state with 0% income tax, a state with the median income tax rate of 6% for the 25% tax bracket, and California with an income tax rate of 9.3% for the 25% tax bracket. California has an addition 2.5% penalty on unqualified distributions.  Additionally, tax deductions taken on contributions that are part of unqualified distributions will be viewed as income and that portion of the distribution will be taxed as such at the state level. Vanguard's 500 Index Portfolio has a 10 year average return of 7.63%.  Vanguard's S&P 500 Index fund has a 10 year average return of 7.89% before tax and 7.53% after taxes on distributions. Use a 529 as intended: Use a 529 but do not use as intended: Invest in a S&P 500 Index fund in a taxable account: Given similar investment options, using a 529 fund for something other than education is much worse than having an investment in a mutual fund in a taxable account, but there's also a clear advantage to using a 529 if you know with certainty you can use it for qualified expenses.  Both the benefits for correct use of a 529 and the penalties for incorrect use increase with state tax rates. I live in a state with no income tax so the taxable mutual fund option is closer to the middle between correct and incorrect use of a 529.  I am leaning towards the investment in a taxable account." The shift to trading at the close began in 2008. Traders did not want to be caught off guard by surprise news and there was a lot of volatility during the financial crisis, so they would close their position in the evening. Thats how it began. There are two reasons why it sticks around. First, there has been an increase usage of index funds or passive funds. These funds tend to update their positions at the end of the day. From the WSJ: Another factor behind the shift has been the proliferation of passively managed investments, such as index funds. These funds aim to mimic an index, like the S&P 500, by owning the shares that comprise it. Index funds don’t trade as often as active investors, but when they do, it is typically near the market close, traders say. That is because buying or selling a stock at its closing price better aligns their performance with the index they are trying to emulate. The second reason is simply that volume attracts volume. As a result of whats mentioned above, you have a shift to end of day trading, and the corrolary to that is that there is a liquidity shortage from 10am to 3pm. Thus, if you want to buy or sell a stock, but there are few buyers or sellers around, you will significant move the price when you enter your order. Obviously this does not affect retail traders, but imagine hedge funds entering or closing a billion dollar position. It can make a huge impact on price. And one way to mitigate that is to wait until there are more market participants to take the other end of your trade, just as at the end of the day. So this is a self-reinforcing trend that has begun in the markets and will likely stick around. http://www.wsj.com/articles/traders-pile-in-at-the-close-1432768080 "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." SeekingAlpha has a section dedicated to Short ETFs as well as others. In there you will find SH, and SDS.  Both of which are inverse to the S&P 500.  Edit: I linked to charts that compare SH and SDS to SPY. The issue with holding gold or silver is the liquidity of the asset. How are you going to unload on thousands of dollars of silver when you want to buy something? I dont think there will be hyperinflation period. It will be slow and solved politically eventually. If the dollar collapsed we would be in deep trouble. Investing in guns would likely be more profitable than silver and gold and in the anarchy you'd better believe someone will try to take your stash. I think your question is very difficult to answer because it involves speculation. I think the best article describing why or why not to invest in gold in a recent Motley Fool Article. The equation you show is correct, you've simply pointed out that you understand that you buy at the 'ask' price, and later sell at the 'bid.' There is no bid/ask on the S&P, as you can't trade it directly.  You have a few alternatives, however - you can trade SPY, the (most well known) S&P ETF whose price reflects 1/10 the value or VOO (Vanguard's offering) as well as others. Each of these ETFs gives you a bid/ask during market hours. They trade like a stock, have shares that are reasonably priced, and are optionable.  To trade the index itself, you need to trade the futures. S&P 500 Futures and Options is the CME Group's brief info guide on standard and mini contracts.  Welcome to SE.