How will interest rate changes affect my government bonds ETF?
"In general, yes. If interest rates go higher, then any existing fixed-rate bonds - and hence ETFs holding those bonds - become less valuable. The further each bond is from maturity, the larger the impact. As you suggest, once the bonds do mature, the fund can replace them at a market price, so the effect tails off. The bond market has a concept known as ""duration"" that helps reason about this effect. Roughly, it measures the average time from now to each payout of the bond, weighted by the payout. The longer the duration, the more the price will change for a given change in interest rates. The concept is just an approximation, and there are various slightly different ways of calculating it; but very roughly the price of a bond will reduce by a percentage equal to the duration times the increase in interest rates. So a bond with a duration of 5 years will lose 5% of its value for a 1% rise in interest rates (and of course vice-versa). For your second question, it really depends on what you're trying to achieve by diversifying - this might be best as a different question that gives more detail, as it's not very related to your first question. Short-term bonds are less risky. But both will lose value if the underlying company is in trouble. Gilts (government bonds) are less risky than corporate bonds."
Lowering of the US credit rating would affect all US bonds.  Some institutional investments are required to invest in securities with a certain credit rating (i.e. money markets and some low risk mutual funds).  If the credit rating is lowered these institutions would be required to dump their US bond holdings.  This could have a serious affect on bond prices.  The lower bond prices would drive up yields. If the US credit rating was lowered after you purchased TIPS then the price you could sell your TIPS for would most probably be lower then what you bought them.  You would lose money. All US bonds, including TIPS, would be affected by a lower credit rating since the credit rating is suppose to indicate the borrower's ability to repay the debt.  This is independent of inflation.  TIPS provide no additional benefit over regular bonds in regard to credit rating. The Fed sets the overnight borrowing costs by setting its overnight target rate.  The markets determine the rates at which the treasury can borrow through the issuance of bonds. The Fed's actions will certainly influence the price of very short term bonds, but the Fed's influence on anything other than very short term bonds in the current environment is very muted. Currently, the most influential factor keeping bond prices high and yields low is the high demand for US treasuries coming from overseas governments and institutions.  This is being caused by two factors : sluggish growth in overseas economies and the ongoing strength of the US dollar.  With many European government bonds offering negative redemption yields, income investors see US yields as relatively attractive.  Those non-US economies which do not have negative bond yields either have near zero yields or large currency risks or both.  Political issues such as the survival of the Euro also weigh heavily on market perceptions of the current attractiveness of the US dollar.  Italian banks may be about to deliver a shock to the Eurozone, and the Spanish and French banks may not be far behind. Another factor is the continued threat of deflation.  Growth is slowing around the world which negatively effects demand.  Commodity prices remain depressed. Low growth and recession outside of the US translate into a prolonged period of near zero interest rates elsewhere together with renewed QE programmes in Europe, Japan, and possibly elsewhere.  This makes the US look relatively attractive and so there is huge demand for US dollars and bonds.  Any significant move in US interest rates risks driving to dollar ever higher which would be very negative for the future earning of US companies which rely on exports and foreign income.  All of this makes the market believe that the Fed's hands are tied and low bond yields are here for the foreseeable future.    Of course, even in the US growth is relatively slow and vulnerable to a loss of steam following a move in interest rates. Stocks, gold, commodities, and physical real estate will not be affected by currency changes, regardless of whether those changes are fast or slow.  All bonds except those that are indexed to inflation will be demolished by sudden, unexpected devaluation. Notice: The above is true if devaluation is the only thing going on but this will not be the case.  Unfortunately, if the currency devalued rapidly it would be because something else is happening in the economy or government.  How these asset values are affected by that other thing would depend on what the other thing is.  In other words, you must tell us what you think will cause devaluation, then we can guess how it might affect stock, real estate, and commodity prices. As no one has mentioned them I will...  The US  Treasury issues at least two forms of bonds that tend to always pay some interest even when prevailing rates are zero or negative.  The two that I know of are TIPS and I series bonds. Below are links to the descriptions of these bonds: http://www.treasurydirect.gov/indiv/research/indepth/tips/res_tips.htm http://www.treasurydirect.gov/indiv/research/indepth/ibonds/res_ibonds.htm "The bond funds should tell you their duration. My 401(k) has similar choices, and right now, I'm at the short maturity, i.e. under 1 year. The current return is awful, but better than the drop the longer term funds will experience as rates come back up.  Not quite mathematically correct, but close enough, ""duration"" gives you the time-weighted average maturity in a way that tells you how the value responds to a rate change. If a fund has a 10 year duration, a .1% rate rise will cause the fund value to drop 1.0%." "I don't have experience with TSP in particular, but they look to be roughly the same as 401(k) loans. If the ""G Fund rate"" is equal to the yield of government bonds, then your main risk is the risk that yields increase, which means the interest you're paying is less than what you would have earned on the investments. Here are some other things to consider: For any car loan, I would borrow as little as possible with as short a term as possible.  To me, the interest savings and additional risks from borrowing from your retirement isn't worth it." "I think this is a good question with no single right answer.  For a conservative investor, possible responses to low rates would be: Probably the best response is somewhere in the middle: consider riskier investments for a part of your portfolio, but still hold on to some cash, and in any case do not expect great results in a bad economy. For a more detailed analysis, let's consider the three main asset classes of cash, bonds, and stocks, and how they might preform in a low-interest-rate environment. (By ""stocks"" I really mean mutual funds that invest in a diversified mixture of stocks, rather than individual stocks, which would be even riskier.  You can use mutual funds for bonds too, although diversification is not important for government bonds.) Cash. Advantages: Safe in the short term.  Available on short notice for emergencies. Disadvantages: Low returns, and possibly inflation (although you retain the flexibility to move to other investments if inflation increases.) Bonds. Advantages: Somewhat higher returns than cash.  Disadvantages: Returns are still rather low, and more vulnerable to inflation.  Also the market price will drop temporarily if rates rise. Stocks. Advantages: Better at preserving your purchasing power against inflation in the long term (20 years or more, say.)  Returns are likely to be higher than stocks or bonds on average.  Disadvantages:  Price can fluctuate a lot in the short-to-medium term.  Also, expected returns are still less than they would be in better economic times. Although the low rates may change the question a little, the most important thing for an investor is still to be familiar with these basic asset classes.  Note that the best risk-adjusted reward might be attained by some mixture of the three." "The federal funds rate is one of the risk-free short-term rates in the economy. We often think of fixed income securities as paying this rate plus some premia associated with risk. For a treasury security, we can think this way: (interest rate) = (fed funds rate) + (term premium) The term premium is a bit extra the bond pays because if you hold a long term bond, you are exposed to interest rate risk, which is the risk that rates will generally rise after you buy, making your bond worth less.  The relation is more complex if people have expectations of future rate moves, but this is the general idea.  Anyway, generally speaking, longer term bonds are exposed to more interest rate risk, so they pay more, on average. For a corporate bond, we think this way: (interest rate) = (fed funds rate) + (term premium) + (default premium) where the default premium is some extra that the bond must pay to compensate the holder for default risk, which is the risk that the bond defaults or loses value as the company's prospects fall.  You can see that corporate and government bonds are affected the same way (approximately, this is all hand-waving) by changes in the fed funds rate. Now, that all refers to the rates on new bonds.  After a bond is issued, its value falls if rates rise because new bonds are relatively more attractive.  Its value rises if rates on new bonds falls.  So if there is an unexpected rise in the fed funds rate and you are holding a bond, you will be sad, especially if it is a long term bond (doesn't matter if it's corporate or government).  Ask yourself, though, whether an increase in fed funds will be unexpected at this point.  If the increase was expected, it will already be priced in.  Are you more of an expert than the folks on wall-street at predicting interest rate changes?  If not, it might not make sense to make decisions based on your belief about where rates are going.  Just saying. Brick points out that treasuries are tax advantaged.  That is, you don't have to pay state income tax on them (but you do pay federal). If you live in a state where this is true, this may matter to you a little bit. They also pay unnaturally little because they are convenient for use as a cash substitute in transactions and margining (""convenience yield"").  In general, treasuries just don't pay much.  Young folk like you tend to buy corporate bonds instead, so they can make money on the default and term premia." Certainly, yes, a zero coupon bond can go down in price. If interest rates rise before your bond matures, the price of the bond will go down – and the longer to maturity, the more it will tend to drop.  Depending on when you bought and how much interest rates rise, you can incur a capital loss. The bond is guaranteed to be worth a certain amount at maturity as long as the issuer hasn't defaulted, but before maturity the market price of the bond will fluctuate, primarily based on interest rate movements.  In fact, zero coupon bonds are even more interest-rate-sensitive than regular bonds (which have periodic coupon interest payments.) The US Treasury is not directly/transactionally involved, but can affect the junk bond market by issuing new bonds when rates rise. Since US bonds are considered completely safe, changes in yield will affect low quality debt. For example, if rates rose to levels like 1980, a 12% treasury bond would drive the prices of junk bonds issued today dramatically lower. Another price factor is likelihood of default. Companies with junk credit ratings have lousy balance sheets, so negative economic conditions or tight short term debt markets can result in default for many of these companies. Whether bonds in a fund are new issues or purchased on the secondary market isn't something that is very relevant to the individual investor. The current interest rate environment is factored into the market already via prices of bonds. Huh? I don't see how this effects inflation in practice.... (only in theory)  Basically, I sell short end bonds and buy longer end bonds pocketing the difference in yield and increasing my duration.  GLD and mining are hedges against inflation, markets are stupidly short term looking and care only about current expectations, if the current macro situation deteoriates we see prices fall. Can they change the weights? Yes. Will they? It depends. are ETF's fixed from their inception to their de-listing? It's actually not possible for weights to be fixed, since different assets have different returns. So the weights are constantly changing as long as the market is moving. Usually after a certain period or a substantial market move, fund managers would rebalance and bring the weights back to a certain target. The target weights - what your question is really about - aren't necessarily the same as the initial weights, but often times they are. It depends on the objective of the ETF (which is stated in prospectus). In your example, if the manager drops the weight of the most volatile one, the returns of the ETF and the 5 stocks could be substantially different in the next period. This is not desirable when the ETFs objective is to track performance of those 5 stocks.  Most if not all ETFs are passively-managed. The managers don't get paid for active management. So they don't have incentive to adjust the weights if their funds are tracking the benchmarks just fine. Mortgage rates generally consist of two factors: The risk premium is relatively constant for a particular individual / house combination, so most of the changes in your mortgage rate will be associated with changes in the price of money in the world economy at large. Interest rates in the overall economy are usually tied to an interest rate called the Federal Funds rate. The Federal Reserve manipulates the federal funds rate by buying and/or selling bonds until the rate is something they like. So you can usually expect your interest rate to rise or fall depending on the policies of the Federal Reserve. You can predict this in a couple of ways: The way they have described their plans recently indicates that will keep interest rates low for an extended period of time - probably through 2014 or so - and they hope to keep inflation around 2%. Unless inflation is significantly more than 2% between now and then, they are extremely unlikely to change that plan. As such, you should probably not expect mortgage interest rates in general to change more than infinitesimally small amounts until 2014ish. Worry more about your credit score. Bonds can increase in price, if the demand is high and offer solid yield if the demand is low.  For instance, Russian bond prices a year ago contracted big in price (ie: fell), but were paying 18% and made a solid buy.  Now that the demand has risen, the price is up with the yield for those early investors the same, though newer investors are receiving less yield (about 9ish percent) and paying higher prices.   I've rarely seen banks pay more variable interest than short term treasuries and the same holds true for long term CDs and long term treasuries.  This isn't to say it's impossible, just rare.  Also variable is different than a set term; if you buy a 10 year treasury at 18%, that means you get 18% for 10 years, even if interest rates fall four years later.   Think about the people buying 30 year US treasuries during 1980-1985.  Yowza. So if you have a very large amount of money you will store it in bonds as its much less likely that the US treasury will go bankrupt than your bank. Less likely?  I don't know about your bank, but my bank doesn't owe $19 trillion. "The most fundamental observation of bond pricing is this: Bond price is inversely proportional to bond yields  When bond yields rise, the price of the bond falls.  When bond yields fall, the price of the bond rises.  Higher rates are ""bad"" for bonds. If a selloff occurs in the Russian government bond space (i.e. prices are going down), the yield on that bond is going to increase as a consequence."