Proven: best to increase stock allocation into retirement

The following Morningstar article reverses the usual rule of owning a percentage of bonds equaling your age
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The professor seems to be saying that you benefit by avoiding early setbacks that could critically crush your seed money... instead you benefit in a dollar averaged way from setbacks. Not just from DCA current contributions, but the conversions of bonds to stocks (whose percent equals your age up to a point).
There are well known drawbacks to this approach, but they say a zillion simulations prove that you avoid the rare serious setbacks better this way, and on average situations still end up a tiny bit ahead. You lose money in (common) situations where you have enough anyway due to early conservation.
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I don't see any point of not being 100% in the stock market. Bond and CD interest rates are close to zero. Just sell covered calls to get an additional income boost.
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Ron Peterson
Well, you can get over 7% with junk bond funds like HYD, or 5% with muni junk like HYD. They have their swoons, but nothing like the recent biotech stock wreck. However, your criticism looks correct in that the article assumes a random market starting point, where we are at a tipsy stage for low interest bond values.
P.S. I have found the free annual credit report site just about unusable due to stricter identity check thresholds. They refer you to a mail in alternative, but with the most drastic credentials needing mailing in. I found a rarely mentioned toll free phone number though which can get the results sent to you (have to navigate their auto answer service carefully and repeatedly).
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For two or three years, one of the three agencies "stalled" and said they would mail me the results. I forget if I had to mail something in first. Then, last year, it started behaving properly. Beats me.
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Pico Rico
Not exactly "reversing" the rule - what wasn't discussed much in the article is the *pre* retirement asset allocation and glide path.
Once *in* retirement, it makes a huge difference, especially if there's a down market right after retiring (and in particular, if one doesn't cut back on spending at that time).
The idea is that if you actually have a terminal asset allocation (i.e., long-run target of, say, 50% stocks and 50% bonds), when you start retirement, start *lower* than that allocation to stocks and build up towards it over time.
This is as opposed to either the oldest traditional rule of thumb (bonds by age) wherein one may start retirement with a slightly higher stock allocation and work down towards a lower allocation over time -- or one where one reaches that terminal allocation *at* retirement and just leaves it alone.
I'll repeat the biggest takeaway here: he's saying to start your retirement with *less* stocks, potentially a lot less and increase towards your target rather than starting your retirement with more stocks and decreasing towards that *same* target.
The benefit of this is that (a) you still have a stock allocation, so you're not walking away from all the long-term potential returns; and (b) you are much better insulated against the main cause of failures - stock pullbacks early in the retirement; Moreover, since you have all that insulation, in the event of the pullback, you can actually buy more stocks cheaper - thus helping you recover from that early pullback better than someone who's selling at the same time.
If the market doesn't have ups and downs - if it just goes steadily up - this method does worse than the older ideas. If the market has great years early on but crappy years later on, this method *also* may do worse. But if the market does badly early and well later -- this method does great.
Think of four possible sequences of returns:
good->good good->bad bad->good bad->bad
Nothing saves you in bad->bad (except, maybe a pension with inflation adjustments - like Social Security!)
Traditional glide paths do fine in good->good and good->bad, but may fail in bad->good
This method does *ok* in good->good and in good->bad. But provides much better protection in bad->good.
As I said, though, it doesn't much discuss the *pre* retirement glide path.
If your "terminal" allocation is going to be, say, 50% stock and 50% bonds and you are going to use an upward sloping glide path starting at retirement at, say, 65, then at 65 you might want to have only 25% in stocks and 75% in bonds, increasing your stock allocation by 1%/yr during the course of the retirement.
That would mean, however, *decreasing* your stock allocation from, say, the time you're 30 - where you may have 90% down to that 25% when you're 65 by decreasing your stock allocation by about 2%/year during your working years.
So the long-term glide path is down down down down down down up up up.
The article doesn't address the costs of that downward sloping period - if you downward slope to half the allocation you'd have otherwise gone down to, you may lose out on a lot of potential returns during your working years.
It's fascinating research and Kitces and Pfau are really doing some great work from which we can all benefit - but it's not clear that it's a complete solution, at least not just yet.
[reminder - I'm just making up numbers above for illustration purposes!]
Reply to
David S. Meyers, CFP(R)

I believe these articles cover the earlier part of the glide path, with research favoring going from lower to higher stock percentage over your whole life.
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