MasterBlaster
Thinks s/he gets paid by the post
- Joined
- Jun 23, 2005
- Messages
- 4,391
I just saw (another) discussion over on the Bogleheads forum regarding social security and pensions as "phantom" bond allocations. Some take the point of view that your social security and pension income streams have a net present value determined by (perhaps) what an immediate annuity with the same benefits would cost. They then use that value in the bond portion of their asset allocation. None other than John Bogle (of Vanguard fame) supports this approach.
The age-based Bogle asset allocation approach suggests you allocate assets to bonds based linearly with your age. So if you are 50 years old you should allocate 50 percent to bonds. 60 years old - 60 percent bonds and so on. That's the so called 100-age bond allocation model. However those asset allocations (per Bogle) should include the value of secure income streams.
So lets compare traditional allocation versus the Phantom allocation. If you have a $1MM stock-bond portfolio and want a 60 percent bond allocation then in a traditional allocation you'd have $600k in bonds and $400k in equities.
If the net present value of your SS and pension income stream(s) is $400k, then your total Phantom and real portfolio is $1.4M ($1M + $400k). In this case you would still want to allocate your 60 percent bond portion of your real and phantom total portolio (in this case $840k = 60% of $1.4M). But the SS and pension phantom allocation is already $400k so in that case you would want to reduce your bond allocation in the physical portfolio to $440k (that's $840k less the $400k phantom allocation). So in that case the $1M physical portfolio would be then be held as $560k stocks and $440k bonds. Note that the asset allocation is now quite different than the original $400k stocks and $600k bonds.
Bogle (and others) suggest that to not include these secure income streams is to over-allocate assets to bonds to your detriment.
Any comments ?
The age-based Bogle asset allocation approach suggests you allocate assets to bonds based linearly with your age. So if you are 50 years old you should allocate 50 percent to bonds. 60 years old - 60 percent bonds and so on. That's the so called 100-age bond allocation model. However those asset allocations (per Bogle) should include the value of secure income streams.
So lets compare traditional allocation versus the Phantom allocation. If you have a $1MM stock-bond portfolio and want a 60 percent bond allocation then in a traditional allocation you'd have $600k in bonds and $400k in equities.
If the net present value of your SS and pension income stream(s) is $400k, then your total Phantom and real portfolio is $1.4M ($1M + $400k). In this case you would still want to allocate your 60 percent bond portion of your real and phantom total portolio (in this case $840k = 60% of $1.4M). But the SS and pension phantom allocation is already $400k so in that case you would want to reduce your bond allocation in the physical portfolio to $440k (that's $840k less the $400k phantom allocation). So in that case the $1M physical portfolio would be then be held as $560k stocks and $440k bonds. Note that the asset allocation is now quite different than the original $400k stocks and $600k bonds.
Bogle (and others) suggest that to not include these secure income streams is to over-allocate assets to bonds to your detriment.
Any comments ?