Can zero-coupon bonds go down in price?
"Of course it can. This is a time value of money calculation. If I knew the maturity date, or current yield to maturity I'd be able to calculate the other number and advise how much rates need to rise to cause the value to drop from 18 to 17. For a 10 year bond, a rise today of .1% will cause the bond to drop about 1% in value. This is a back of napkin calculation, finance calculators offer precision. edit - when I calculate present value with 34 years to go, and 5.832% yield to maturity, I get $14.55. At 5.932, the value drops to $14.09, a drop of 3.1%.  Edit - Geo asked me to show calculations. Here it goes - A) The simplest way to calculate present value for a zero coupon bond is to take the rate 5.832%, convert it to 1.05832 and divide into the face value, $100. I offer this as the ""four function calculator"" approach, so one enters $100 divided by 1.05832 and repeat for the number of years left. A bit of precision is lost if there's a fractional year involved, but it's close. The bid/ask will be wider than this error introduced.  B) Next - If you've never read my open declaration of love for my Texas Instruments BA-35 calculator, here it is, again. One enters N=34 (for the years) FV = 100, Rate = 5.832, and then CPT PV. It will give the result, $14.56.  C) Here is how to do it in Excel -  The numbers in lines 1-3 are self evident, the equation in cell B4 is =-PV(B3/100,B1,0,B2) - please note there are tiny differences in the way to calculate in excel vs a calculator. Excel wants the rate to be .05832, so I divided by 100 in the equation cell.  That's the best 3 ways I know to calculate present value. Geo, if you've not noticed, the time value of money is near and dear to me. It comes into play for bonds, mortgages, and many aspect of investing. The equations get more complex if there are payments each year, but both the BA-35 and excel are up to it." Certainly, yes, a zero coupon bond can go down in price. If interest rates rise before your bond matures, the price of the bond will go down – and the longer to maturity, the more it will tend to drop.  Depending on when you bought and how much interest rates rise, you can incur a capital loss. The bond is guaranteed to be worth a certain amount at maturity as long as the issuer hasn't defaulted, but before maturity the market price of the bond will fluctuate, primarily based on interest rate movements.  In fact, zero coupon bonds are even more interest-rate-sensitive than regular bonds (which have periodic coupon interest payments.) Let's say today you buy the bond issued by StateX at 18$. Let's say tommorow morning the TV says that StateX is going towards default (if it happens it won't give you back not even the 18$ you invested). You (and others that bought the same bond like you) will get scared and try to sell the bond, but a potential buyer won't buy it for 18$ anymore they will risk maximum couple of bucks, therefor the price of your bond tomorrow is worth 2$ and not 18 anymore. Bond prices (even zero coupon ones) do fluctuate like shares, but with less turbolence (i.e. on the same period of time, ups and downs are smaller in percentage compared to shares) EDIT: Geo asked in the comment below what happens to the bond the FED rises the interest. It' very similar to what I explained above. Let's say today you buy the bond just issued by US treasury at 50$. Today the FED rewards money at 2%, and the bond you bought promised you a reward of 2% per year for 10 years (even if it's zero coupon, it will give you almost the same reward of one with coupons, the only difference is that it will give you all the money back at once, that is when the bond expires). Let's say tommorow morning the TV says that FED decided to rise the interest rates, and now on it lends money rewarding a wonderful 4% to investors. US treasury will also have to issue bonds at 4%. You can obviously keep your bond until expiration (and unless US goes default you will get back all your money until the last cent), but if you decide to sell your bond, you will find out that people won't be willing to pay 50$ anymore because on the market they can now buy the same type of bond (for the same period of time, 10 years) that give them 4% per year and not a poor 2% like yours. So people will be willing to pay maximum 40$ for your bond or less.
"What could happen to bonds such as these because of Detroit filing for   bankruptcy? Depending on how the courts process Detroit's situation, there could be that some bonds become worthless since they are so low and the city can't pay anything on those low priority debts.  Others may get pennies on the dollar.  There could also be the case that some bailout comes along that makes the bonds good though I'd say that is a long shot at this point. Are these bonds done for, or will bondholders receive interest   payments and eventual payment? I wouldn't suspect that they are done for in the sense of being completely worthless though at the same time, I'd be very careful about buying any of them given that they are likely to be changed a great deal. Could these bonds tend to rise over time after the bankruptcy?  Yes, it is possible.  If there was some kind of federal or state bailout that is done, the bonds could rise.  However, that is one heck of an ""if"" as you'd need to have someone come to guarantee the bonds in a sense. What similar situations from the past might support this idea? Not that many as this is the biggest municipal bankruptcy ever, but here are a few links that may be useful as a starting point, though keep in mind Detroit's scale is part of the story as it is such a big amount being defaulted:" Possibly you could use it as a hedging instrument if it's correlated in some way with another asset you're holding.  Even though it seems you're losing money with such a bond, that loss might be less than the hedging costs associated with other instruments. 0% bonds are desirable for some individuals. It depends on your situation. 0% bonds are usually sold well below par value (eg a 100$ face value bond for 2020 might sell for 90$ today) Hence, your gains will be CAPITAL GAINS. A similar investment paying interest would be taxed as INCOME, and smaller portion of capital gains. In many countries (US, Canada) Capital gains are taxed at a more favourable rate then income. This is especially true when holding these investments in corporations. "No... that's just what I'm owed for letting them use my principal.  If I wanted to enjoy the opportunity cost of 0% interest for 13 plus years, I'd just keep the money in my ""savings"" account (where the 8th wonder of world, miracle of compound interest no longer exists).   The bigger question posited by my snark was if/when the bond market will stop trading them as legitimate paper." This is pretty basic question, but my head is confused :(  If you buy a $1000 bond with 5% interest rate, so it would be $1050 at maturity  what does it mean?  * you will be paid the interest in coupons (paid in coupons until it totals $50) and at maturity paid $1000 (in one large single payment) * you get paid the full value in coupons ($1050 split by multiple coupons)  Any other explanations of how a bond works are welcome, most of the stuff I could find was about what yield is, not how the bond actually works. Negative coupons are not the same as a negative yield. A $1000 bond that you purchase, at a premium, for $2100 that produces 10 annual coupons of $100 and a redemption of $1000 has a real, positive coupon ($100). The holder of the bond gets this coupon, and the maturity value However, you get back less than your initial investment.  There is no growth; the original investment shrinks, or has a negative growth rate.  Most mortgage or bond calculators choke on this situation... Notes and Bonds sell at par (1.0). When rates go up, their value goes down. When rates go down, their value goes up. As an individual investor, you really don't have any business buying individual bonds unless you are holding them to maturity. Buy a short-duration bond fund or ETF. Perfect super clear, thank you /u/xlct2  So it is like you buy a bond for $X, start getting interest, sell bond for $X :)  I was thinking there could be a possibility of a bond working like a loan from a bank, that you going paying as time goes by :D Well, people have been saying interest rates have to go up for years now and have been wrong so far.  Also there is an opportunity cost in waiting to buy - if another five years passes with nothing happen, you earn 0% on checking accounts, but at least earn 1.65% per year or so on your 10y bond. I dont think they have much of a choice if they want to deleverage.   If they do that, short and long term rates are going up whether the economy is ready for it or not.   If they wait until the next recession, they'll have to buy even more bonds.  They could just be moving the target up to accommodate for what they (a pro deleveraged fed) considers inevitable rate increases sure to come anyway. "TL;DR: If your currently held bond's bid yield is smaller than another bonds' ask yield. You can swap your bond for bigger returns. Let's imagine you buy a long bond for $12000 (face value of $10000) and it has 6% coupon. The cash flows will have an internal return rate of 4.37%, this is the published ""ask yield"" in 2014 of the bond. After six years, prices have fallen, inflation and yields went up. So you can sell it for only $10000. If you would do it, the IRR will be only 2.55%, so there will be less return, than if you keep it.  But if you would ""undo"" the transaction, then the future cash flows would yield 6.38%. This is the ""bid yield"" in 2020 of the bond. If you can find an offer that yields more than 6.38%, you have better returns if you sell your bond and invest that $10000 in the other bond.  But as other answers pointed it out, you rarely have this opportunity as the market is very effective. (Assuming everything else is equal.)" As the fed liquidates their fiat, the stock market will go down to zero and bonds will evaporate as their denominated in worthless paper.  [The government is going to come for people's gold and seize assets](http://www.zerohedge.com/news/mark-faber-i-am-convinced-whole-derivatives-market-will-cease-exist-and-will-go-zero)  Guns and canned goods are the only safe investments from here forward. On first glance it sounds to good to be true.   From what I understand bridge loans are for people waiting on other loans. In this case I would presume a housing developer would take this loan if something were to go wrong and their first choice of funding went wrong. Not anything wrong with that in and of itself but the coupon is way, way too big not to draw attention.   Examine the financial statements of the credit institutions and the companies they're giving credit to would be the only solution.   The terms of the bond should be dictated by all information available, therefore if the return is this lucrative then there must be a large degree of risk associated with it. Next year, the Fed plans on unwinding the Bonds and MBS.  They'll ramp up to $50 billion a month.  At the same time we'll be selling Bonds on the market to finance the debt at a rate of $70 billion a month.  I wonder who's going to have the cash to buy the Toxic MBS and the low yield Bonds they'll be unloading on top of the usual Bonds for future debt.  Those Bonds will have to pay double digit rates before anyone will buy them.  Future generations will just get even more screwed the way the Fed has it planned. Most reflationary policies are talking about stopping, so hopefully in 2018 the CBs will stopping buying so much. BOJ is rethinking their policy of buying treasuries when our US yields start to rise (to shrink them and protect their currency).  So hopefully once we get past global QE, things can get back to a more “normal” status.  As far as advice on finding value...err...good luck?  [Growth of Monetary Base and M2 chart in article](https://www.google.com/amp/s/seekingalpha.com/amp/article/4113280-federal-reserve-never-printed-money-part)   Also look at how the money multiplier is shrinking.