airahcaz wrote:Since this is the theoretical board.
Person own Total Bond (BND) currently 83+.
What happens, in theory, if interest rates skyrocket 5 percentage points overnight, again, in theory?
Would the NAV decline significantly from 83 and what sort of decline and for how long?
airahcaz wrote:So we know interest rates are highly unlikely to go up 5% in one shot, but it could go up 1% annually which is close to what has occurred in the past.
Doesn't this make bonds, and BND, not as 'safe' as it is always touted to be?
Also, what happens to the yield - does it increase in lockstep with interest rates increase?
And even if yield does increase, do the bonds actually yield less since it is a higher yield but on a lower NAV?
SSSS wrote:airahcaz wrote:So we know interest rates are highly unlikely to go up 5% in one shot, but it could go up 1% annually which is close to what has occurred in the past.
Doesn't this make bonds, and BND, not as 'safe' as it is always touted to be?
Also, what happens to the yield - does it increase in lockstep with interest rates increase?
And even if yield does increase, do the bonds actually yield less since it is a higher yield but on a lower NAV?
Duration of the fund is about 5 years. If interest rates rise, the value of the fund will drop, but the increased yield will "replace" the lost money over 5 years, and after that you'll be ahead of where you'd be if interest rates hadn't risen.
If interest rates fall, the value of the fund will rise, but the lower yield will "take back" the gain in 5 years, and then you'll be making less than if interest rates hadn't fallen.
So LONG-TERM, interest rate increases are good for bond investors.
Analysts generally advise fund investors to target small-cap stocks in order to tap into the true growth story behind emerging markets.
Elbowman wrote:Also, if you are in the withdrawal phase, and especially if you are 83+ , you should probably keep a fraction of your portfolio in a short term bond fund. If interest rates rise sharply, you can live off your short term bonds while BND recovers.
airahcaz wrote:What happens, in theory, if interest rates skyrocket 5 percentage points overnight, again, in theory?
Would the NAV decline significantly from 83 and what sort of decline and for how long?
airahcaz wrote:if NAV for BND is 83, and interest rates rise 1%, it may not be linear, but we can expect the NAV to go down by what percentage, and the current 12-Mo. Yield of 2.72% to go up by 1% to 3.72%?
athrone wrote:You can also look at history, Real returns for Total Bond Market (intermediate duration, ~5-7 years) were:
1977: -3.91%
1978: -7.02%
YDNAL wrote:airahcaz wrote:What happens, in theory, if interest rates skyrocket 5 percentage points overnight, again, in theory?
Would the NAV decline significantly from 83 and what sort of decline and for how long?
In theory.....1. BND price decreases 5% x 5.2 duration = 26%
http://www.bogleheads.org/wiki/Bonds:_Advanced_Topics
2. You have same BND shares earning 5% more annually. You are in the same spot in 5.2 years.airahcaz wrote:if NAV for BND is 83, and interest rates rise 1%, it may not be linear, but we can expect the NAV to go down by what percentage, and the current 12-Mo. Yield of 2.72% to go up by 1% to 3.72%?
Knowing the above, why don't YOU answer your question?
airahcaz wrote:
Indeed - thanks for the info - however, I am on the phone with Vanguard, and they are unable to tell me if a NAV drops 5% based on the above, would the NAV recoup back to where it was prior to the rise in interest rates, e.g. assume a NAV of 100, down 5% to 95, after 5 years does it recover to 100 at the end of the duration, or remain at 95.
dbr wrote:airahcaz wrote:
Indeed - thanks for the info - however, I am on the phone with Vanguard, and they are unable to tell me if a NAV drops 5% based on the above, would the NAV recoup back to where it was prior to the rise in interest rates, e.g. assume a NAV of 100, down 5% to 95, after 5 years does it recover to 100 at the end of the duration, or remain at 95.
The total value of the investment recovers. That amount will be the product of the NAV, which may not recover, times the number of shares held, which increases whenever a distribution of dividends or realized capital gains is reinvested. I would have to think about whether the NAV remains exactly at 95 depending on purchases and sales of bonds in the fund.
It is certainly true that if you think you can spend the dividends and that the NAV will somehow recover all by itself, then you are wrong.
airahcaz wrote:dbr wrote:airahcaz wrote:
Indeed - thanks for the info - however, I am on the phone with Vanguard, and they are unable to tell me if a NAV drops 5% based on the above, would the NAV recoup back to where it was prior to the rise in interest rates, e.g. assume a NAV of 100, down 5% to 95, after 5 years does it recover to 100 at the end of the duration, or remain at 95.
The total value of the investment recovers. That amount will be the product of the NAV, which may not recover, times the number of shares held, which increases whenever a distribution of dividends or realized capital gains is reinvested. I would have to think about whether the NAV remains exactly at 95 depending on purchases and sales of bonds in the fund.
It is certainly true that if you think you can spend the dividends and that the NAV will somehow recover all by itself, then you are wrong.
Spending dividends - not reinvesting, so yes that's the premise.
athrone wrote:You can also look at history, Real returns for Total Bond Market (intermediate duration, ~5-7 years) were:
1977: -3.91%
1978: -7.02%
1979: -6.91%
1980: -6.13%
For a cumulative Real loss of -22% over four years. This was a period of rising interest rates and high inflation.
jeffyscott wrote:athrone wrote:You can also look at history, Real returns for Total Bond Market (intermediate duration, ~5-7 years) were:
1977: -3.91%
1978: -7.02%
1979: -6.91%
1980: -6.13%
For a cumulative Real loss of -22% over four years. This was a period of rising interest rates and high inflation.
I think this tells us more about the impact of very high inflation on real returns, that it does about the impact of the rising rates. According to m* chart the nominal total return was about +10% for that period, so that means inflation must have been around 32%.
http://quote.morningstar.com/fund/chart ... %2C0%22%7D
For a cumulative Real loss of -22% over four years
I think it is also useful just to understand what periods of poor bond performance might look like in a more general setting

Year 20_year_Index_Linked_Gilt 20_year_conventional_gilt Inflation
1983 0.8 20.9 5.3
1984 6.6 1.8 4.6
1985 -0.2 51.3 5.7
1986 6.1 15.9 3.7
1987 6.9 6.8 3.7
1988 13.7 11 6.8
1989 14.5 11 7.7
1990 4.4 16.3 9.3
1991 5.2 9.4 4.5
1992 17.1 5.9 2.6
1993 21.1 5.6 1.9
1994 -7.9 18.9 2.9
1995 12 18.4 3.2
1996 6.5 28.8 2.5
1997 13.4 -11.3 3.6
1998 20.3 19 2.8
1999 5 7.7 1.8
2000 3.1 19.4 2.9
2001 -0.9 25 0.7
2002 8.2 -3.5 2.9
2003 6.8 9.2 2.8
2004 8.6 1.3 3.5
2005 9.1 9.8 2.2
2006 2.3 1.6 4.4
2007 5.5 7.2 4
2008 -1.2 8.4 1
2009 5.6 -0.1 2.3
2010 10.3 5.2 4.8
2011 18.95 28 4.8
2012 1.48 2.7 2.7
airahcaz wrote:YDNAL wrote:airahcaz wrote:What happens, in theory, if interest rates skyrocket 5 percentage points overnight, again, in theory?
Would the NAV decline significantly from 83 and what sort of decline and for how long?
In theory.....1. BND price decreases 5% x 5.2 duration = 26%
http://www.bogleheads.org/wiki/Bonds:_Advanced_Topics
2. You have same BND shares earning 5% more annually. You are in the same spot in 5.2 years.airahcaz wrote:if NAV for BND is 83, and interest rates rise 1%, it may not be linear, but we can expect the NAV to go down by what percentage, and the current 12-Mo. Yield of 2.72% to go up by 1% to 3.72%?
Knowing the above, why don't YOU answer your question?
Indeed - thanks for the info - however, I am on the phone with Vanguard, and they are unable to tell me if a NAV drops 5% based on the above, would the NAV recoup back to where it was prior to the rise in interest rates, e.g. assume a NAV of 100, down 5% to 95, after 5 years does it recover to 100 at the end of the duration, or remain at 95.
airahcaz wrote:It is certainly true that if you think you can spend the dividends and that the NAV will somehow recover all by itself, then you are wrong.
Spending dividends - not reinvesting, so yes that's the premise.
BND Investment 100,000 100,000
Interest Rate 1% 2%
Adjustment - (5,000)
Adj NAV 100,000 95,000
Year 1 101,000 96,900
Year 2 102,010 98,838
Year 3 103,030 100,815
Year 4 104,060 102,831
Year 5 105,101 104,888Clive wrote:For a cumulative Real loss of -22% over four yearsI think it is also useful just to understand what periods of poor bond performance might look like in a more general setting
That loss could be considered as a single hit loss over one time point, that was later recovered
airahcaz wrote:Since this is the theoretical board.
Person own Total Bond (BND) currently 83+.
What happens, in theory, if interest rates skyrocket 5 percentage points overnight, again, in theory?
Would the NAV decline significantly from 83 and what sort of decline and for how long?
airahcaz wrote:BND is down 1% and at the same time SPY is up 3% since I've bought
Dandy wrote:If interest rate rose 5% quickly I think the panic/fear factors would probably affect behavior more than just the bond fund duration. The stock market would probably take a big hit and fear/panic may drive people into bonds/bond funds -- most likely Treasuries. But some might go into Total bond - then agian money might leave bond funds for gold and make the decline worse. I don't think we have ever faced such a large and rapid increase in interest rates -- so all bets are off.
Taylor Larimore wrote:airahcaz wrote:BND is down 1% and at the same time SPY is up 3% since I've bought
Congratulations!
You are diversified. I start to worry if all our funds move up or down together.
Nicho_1978 wrote:Since bonds have an inverse relationship with stocks, is it possible that if this equity rally continues, the bond market will take a hit, even if interest rates and inflation remains low.
Nicho_1978 wrote:Since bonds have an inverse relationship with stocks, is it possible that if this equity rally continues, the bond market will take a hit, even if interest rates and inflation remains low.
Taylor Larimore wrote:airahcaz wrote:Since this is the theoretical board.
Person own Total Bond (BND) currently 83+.
What happens, in theory, if interest rates skyrocket 5 percentage points overnight, again, in theory?
Would the NAV decline significantly from 83 and what sort of decline and for how long?
airahcz:
We have held Total Bond Market Index Fund for many years.
In 2008 inflation was 0.1%. In 2011 U.S. inflation (CPI-U) was 3.0% for an increase of nearly 3%. These were our returns:
2008: 5.1%
2009: 5.9%
2010: 6.5%
2011: 7.6%
Past performance does not guarantee future performance.
It is "total return" that's important.
Best wishes.
Taylor


Tom_T wrote:How do you explain that both bonds and stocks have done well over the past three+ years? Haven't we had an equity rally since 2009? It didn't start last month...
Nicho_1978 wrote:Since bonds have an inverse relationship with stocks, is it possible that if this equity rally continues, the bond market will take a hit, even if interest rates and inflation remains low.
Nicho_1978 wrote:Tom_T wrote:How do you explain that both bonds and stocks have done well over the past three+ years? Haven't we had an equity rally since 2009? It didn't start last month...
It would be interesting to see what those return would be if the yield in those years you mentioned was as low as they are now?
crowd79 wrote:Vanguard Intermediate-Term Bond index(VBIIX) has plunged over .40 a share since I added it to my Vanguard IRA portfolio in December. Should I sell it and re-invest in a different bond fund or something else? I bought this because my 401k option (SEGSX) is mainly in government securities and Mortgage-backed securities. I wanted some corporate bond exposure and thought VBIIX looked decent enough.
ofcmetz wrote:crowd79 wrote:Vanguard Intermediate-Term Bond index(VBIIX) has plunged over .40 a share since I added it to my Vanguard IRA portfolio in December. Should I sell it and re-invest in a different bond fund or something else? I bought this because my 401k option (SEGSX) is mainly in government securities and Mortgage-backed securities. I wanted some corporate bond exposure and thought VBIIX looked decent enough.
Did you buy it before the capital gains payout in December? The share price dropped 20 cents on 12-20-13 when it paid these out.
crowd79 wrote:ofcmetz wrote:Did you buy it before the capital gains payout in December? The share price dropped 20 cents on 12-20-13 when it paid these out.
I know, dumb. Tough lesson learned. Bought around Dec 10th.
airahcaz wrote:BND is down 1% and at the same time SPY is up 3% since I've bought
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