mc2fool wrote:GoSeigen wrote:
dealtn explained it in reasonable detail above. The yield of a gilt is based not on the [real] value of the next coupon but on the value of the entire stream of coupons (discounted). For longer gilts, that's a lot of coupons.
If the market determines that increases in the monetary interest rate will result in a lower inflation rate for some years and they still require the same real yield, then the nominal yield of long-term gilts will fall, not rise.
Similarly, if the market determines that low real monetary rates combined with an increased money supply and a central bank holding a large proportion of government bonds will result in potential difficulty for the government servicing its debt and/or the central bank controlling future inflation then long-term yields may rise notwithstanding any short-term fall in monetary rates.
You will note that the yield curve is currently inverted. This is not the normal state of affairs and is likely to reverse at some point. That implies short yields falling much faster than long yields, or even long rates rising while short yields fall. This is why I repeatedly warn about buying longer-dated gilts at this time. There is ample scope for disappointment notwithstanding the much lower prices of gilts now relative to a couple of years back.
GS
Hum, well I do get that prices are set by market sentiment driven by the market's view of future real return expectations (and is why I'm a hold-to-maturity "saver" type ), but I still don't think that gilt prices going up when interest rates rise is a fair generalisation.
Ah, no-one claimed it was a fair generalisation. A common and not anomalous scenario is more like it.
The view that yields rise when interest rates rise is NOT a textbook view. It is a description of just one of a range of outcomes. I think the textbook view is that the market can set yields to whatever value it deems sensible at the time, no matter what interest rates are. Often there will be a correlation, occasionally yields will be on crack.
For most of the last two or three decades, when the yield curve has not been inverted, a drop in short term interest rates has resulted in a drop in long(er) term yields, as the view has been that the lower rates were here to stay. Indeed, the drops in interest rates after the 2008 debacle, and resultant drop in long term yields, was due to fear of deflation.
So, yeah, sure, if the market thinks that increases in the interest rate will result in lower inflation, but they might not, so I don't think it's a good generalisation and, while certainly not absolute, I think the more textbook view is probably a better one, at least as far as generalisations go.
Over the long term maybe (certainly) you can observe a correlation of long-term bond yields with average interest rates. Interest rate changes take effect instantly though, so are a short-term phenomenon; I think it's therefore fair to consider shorter-term implications for bonds of all tenors.
If you think 2008 is a good example of what you are saying then perhaps you are not familiar with the Greenspan Conundrum -- where long-term yields failed to rise while the Fed was raising the Funds rate in the mid-2000s.
P.S. Edit...GoSeigen wrote:My point is this. Bond prices always move in inverse relationship to their yield: that is a mathematical certainty. They DO NOT necessarily move inverse to (monetary) interest rates because neither do bond yields track interest rates exactly. Bond yields are set by the market (via price) based on its assessment of the effect of those rates; but there is NO direct mathematical relationship with interest rates.
Yep, there we do agree. They do not necessarily move either way to changes in monetary interest rates.
Oh, now has this all been an argument about semantics? Significance of smiley kicking in:
mc2fool wrote:dealtn wrote:It is perfectly normal that gilt prices yields go up when (policy) interest rates also go up, and vice versa fall when that interest rate falls.
It's possible I misinterpreted this as a correction of dealtn's remark whereas you were just wryly saying that actually either prices could go up or yields could go up???
It might have been clearer to me if you had switched "down" for "up" rather than "prices" and "yields"...
EDIT: LOL! Ah, yes, I see. A classic case of over focussing on one thing!
GS