Can an ETF perform differently than its holdings?
The Creation/Redemption mechanism is how shares of an ETF are created or redeemed as needed and thus is where there can be differences in what the value of the holdings can be versus the trading price. If the ETF is thinly traded, then the difference could be big as more volume would be where the mechanism could kick in as generally there are blocks required so the mechanism usually created or redeemed in lots of 50,000 shares I believe. From the link where AP=Authorized Participant: With ETFs, APs do most of the buying and selling. When APs sense   demand for additional shares of an ETF—which manifests itself when the   ETF share price trades at a premium to its NAV—they go into the market   and create new shares. When the APs sense demand from investors   looking to redeem—which manifests itself when the ETF share price   trades at a discount—they process redemptions. So, suppose the NAV of the ETF is $20/share and the trading price is $30/share. The AP can buy the underlying securities for $20/share in a bulk order that equates to 50,000 shares of the ETF and exchange the underlying shares for new shares in the ETF. Then the AP can turn around and sell those new ETF shares for $30/share and pocket the gain. If you switch the prices around, the AP would then take the ETF shares and exchange them for the underlying securities in the same way and make a profit on the difference. SEC also notes this same process.
"The VIX is a mathematical aggregate of the implied volatilities of the S&P 500 Index components. It itself cannot be traded as there currently is no way to only hold a position on an implied volatility alone.  Implied volatility can only currently be derived from an option relative to its underlying.  Further, the S&P 500 index itself cannot be traded only the attempts to replicate it.  For assets that are not tradable, derivatives can be ""cash settled"" where the value of the underlying is delivered in cash.  Cash settlement can be used for underlyings that in fact due trade but are frequently only elected if the underlying is costly to deliver or there is an incentive to circumvent regulation. Currently, only futures that settle on the value of the VIX at the time of delivery trade; in other words, VIX futures holders must deliver on the value of the VIX in cash upon settlement.  Options in turn trade on those futures and in turn are also cash settled on the value of the underlying future at expiration. The VXX ETF holds one to two month VIX futures that it trades out of before delivery, so while it is impossible to know exactly what is held in the VXX accounts unless if one had information from an insider or the VXX published such details, one can assume that it holds VIX futures contracts no later than two settlements from the preset.  It should be noted that the VXX does not track the VIX over the long run because of the cost to roll the futures and that the futures are more stable than the VIX, so it is a poor substitute for the VIX over time periods longer than one day. ""Underlying"" now implies any abstract from which a financial product derives its value." @BlackJack does a good answer of addressing the gains and when you are taxed on them and at what kind of rate. Money held in a brokerage account will usually be in a money-market fund, so you would own taxes on the interest it earned.   There is one important consideration that must be understood for capitol Losses.  This is called the Wash Sale Rule.  This rule comes into affect if you sell a stock at a LOSS, and buy shares of the same stock within 30 days (before or after) the sale.  A common tactic used to minimize taxes paid is to 'capture losses' when they occur, since these can be used to offset gains and lower your taxes.  This is normally done by selling a stock in which you have a LOSS, and then either buying another similar stock, or waiting and buying back the stock you sold.   However, if you are intending to buy back the same stock, you must not 'trigger' the Wash Sale Rule or you are forbidden to take the loss. Examples.  Lets presume you own 1000 shares of a stock and it's trading 25% below where you bought it, and you want to capture the loss to use on your taxes. This can be a very important consideration if trading index ETF's  if you have a loss in something like a S&P500 ETF, you would likely incur a wash sale if you sold it and bought a different S&P500 ETF from another company since they are effectively the same thing.  OTOH, if you sold an S&P500 ETF and bought something like a 'viper''total stock market' ETF it should be different enough to not trigger the wash sale rule.  If you are trying to minimize the taxes you pay on stocks, there are basically two rules to follow.  1) When a gain is involved, hold things at least a year before selling, if at all possible.  2) Capture losses when they occur and use to offset gains, but be sure not to trigger the wash sale rule when doing so. that's just it, though - they are splitting up the 1%! and in most cases, especially vanguard, they are splitting up far less.  ETFs don't have 12b-1 fees. explaining why you're experiencing different returns for ETFs will almost certainly involve something other than their expense. again, this is especially true for vanguard. they have the cheapest ETFs around (though i think schwab beats them on a few now).  i can only guess at the full compensation structure. betterment likely earns money on cash reserves and  securities hypothecation (i guess?). they also charge a small fee from what i understand. finance is very slim these days.  i guess i'm wondering what your ultimate question is. if it's the inter corporate compensation structure, above is my best guess. if it's about performance, then we need to compare the ETFs you are looking at. if it's about the fees on funds, i think we covered that!  as an advisor, it's my experience that very specific inquiries about fees have a deeper concern. people hear a lot about being overcharged so cost is a very standard place for clients to initially look when trying to compare performance of portfolios or securities. "You're talking about money in a savings account, and avoiding the risks posed by an ongoing crisis, and avoiding risk. If you are risk-averse, and likely to need your money in the short term, you should not put your money in the stock market, even in ""safe"" stocks like P&G/Coca-Cola/etc. Even these safe stocks are at risk of wild price swings in the short- to intermediate-term, especially in the event of international crises such as major European debt defaults and the like. These stocks are suitable for long-term growth objectives, but they are not as a replacement for a savings account. Coca-Cola lost a third of its value between 2007 and 2009. (It's recovered, and is currently doing better than ever.) P&G went from $74/share to $46/share. (It's partially recovered and back at $63). On the other hand, these stocks may indeed be suitable as long-term investments to protect you against local currency inflation. And yes, they even pay dividends. If you're after this investment, a good option is probably a sector-specific exchange-traded fund, such as a consumer-staples ETF. It will likely be more diversified and safer than anything you could come up with using a list of individual stocks. You can also investigate recommendations that show up when you search for a ""defensive ETF"". If you do not wish to buy the ETF directly, you can also look at listings of the ETF's holdings. Read the prospectus for an idea of the risks associated with these funds. You can buy these funds with any brokerage that gives you access to US stock exchanges." Vanguard (and probably other mutual fund brokers as well) offers easy-to-read performance charts that show the total change in value of a $10K investment over time.  This includes the fair market value of the fund plus any distributions (i.e. dividends) paid out.  On Vanguard's site they also make a point to show the impact of fees in the chart, since their low fees are their big selling point. Some reasons why a dividend is preferable to selling shares: no loss of voting power, no transaction costs, dividends may have better tax consequences for you than capital gains. NOTE:  If your fund is underperforming the benchmark, it is not due to the payment of dividends.  Funds do not pay their own dividends; they only forward to shareholders the dividends paid out by the companies in which they invest.  So the fair market value of the fund should always reflect the fair market value of the companies it holds, and those companies' shares are the ones that are fluctuating when they pay dividends. If your fund is underperforming its benchmark, then that is either because it is not tracking the benchmark closely enough or because it is charging high fees.  The fact that the underperformance you're seeing appears to be in the amount of dividends paid is a coincidence. Check out this example Vanguard performance chart for an S&P500 index fund.  Notice how if you add the S&P500 index benchmark to the plot you can't even see the difference between the two -- the fund is designed to track the benchmark exactly.  So when IBM (or whoever) pays out a dividend, the index goes down in value and the fund goes down in value. "Generally, ETFs work on the basis that there exists a pair of values that can be taken at any moment in time: A Net Asset Value of each share in the fund and a trading market price of each share in the fund.  It may help to picture these in baskets of about 50,000 shares for the creation/redemption process. If the NAV is greater than the market price, then arbitrageurs will buy up shares at the market price and do an ""in-kind"" transaction that will be worth the NAV value that the arbitrageurs could turn around and sell for an immediate profit. If the market price is greater than the NAV, then the arbitrageurs will buy up the underlying securities that can be exchanged ""in-kind"" for shares in the fund that can then be sold on the market for an immediate profit. What is the ETF Creation/Redemption Mechanism? would be a source on this though I imagine there are others. Now, in the case of VXX, there is something to be said for how much trading is being done and what impact this can have. From a July 8, 2013 Yahoo Finance article: At big option trade in the iPath S&P 500 VIX Short-Term Futures Note   is looking for another jump in volatility.  More than 250,000 VXX options have already traded, twice its daily   average over the last month. optionMONSTER systems show that a trader   bought 13,298 August 26 calls for the ask price of $0.24 in volume   that was 6 times the strike's previous open interest, clearly   indicating new activity. Now the total returns of the ETF are a combination of changes in share price plus what happens with the distributions which could be held as cash or reinvested to purchase more shares." I'm not 100% familiar with the index they're using to measure hedge fund performance, but based on the name alone, comparing market returns to *market neutral* hedge fund returns seems a bit disingenuous.  That doesn't mean the article is wrong, and they have a point about the democratization of data, but still. "Does the bolded sentence apply for ETFs and ETF companies? No, the value of an ETF is determined by an exchange and thus the value of the share is whatever the trading price is. Thus, the price of an ETF may go up or down just like other securities. Money market funds can be a bit different as the mutual fund company will typically step in to avoid ""Breaking the Buck"" that could happen as a failure for that kind of fund. To wit,   must ETF companies invest a dollar in the ETF for every dollar that an   investor deposited in this aforesaid ETF? No, because an ETF is traded as shares on the market, unless you are using the creation/redemption mechanism for the ETF, you are buying and selling shares like most retail investors I'd suspect. If you are using the creation/redemption system then there are baskets of other securities that are being swapped either for shares in the ETF or from shares in the ETF."