Hi Chris,
1929 – 1953, the S&P 500 managed a 5.89% CAGR, 5 yr. T-bonds 3.02%, and a 60/40, 5.47%. Inflation was 1.82%. An individual drawing a reasonable 4% Safe Withdrawal Rate would have been fine, as long as they didn’t panic and sell, or jump out a window. ;0),
2000 – 2007, this higher risk 60/40 portfolio returned 4.26% CAGR, Taylor’s simple 4Fund portfolio 6.22%, and the Coffeehouse 7.23%.
To put this in perspective, the real return of the 2000 – 2007 was 2.78%. The real return for the S&P 500 1972 – 1981 was negative, - 4.46%. The return for the long term government bond for this period was also negative, -5.82%. Where to run? – huh? The real return for 1929 - 1948 was actually 1.67%.
This is what makes asset allocation important, but even asset allocation is not perfect. For instance, the Coffeehouse would have done well lately, and 1972 – 1981, 7.64% real, but not without volatility. 1973 – 1974, the Coffeehouse lost 40% real for the total 2 years.
If you're interested, William Bernstein offers one of the best easy-to-read books that cover pretty much everything Asset Allocation in “The Four Pillars of Investing.” Larry Swedroe takes this a bit further, and Rick Ferri with a more conservative Total Market (Efficient markets) approach. You can talk to them both over at the Bogleheads.
Thing is, don’t panic during downturns. It’s just a part of investing. As Taylor said, setting your asset allocation up for your personal risk tolerance is probably most important.
Using total markets, a 60/40 portfolio would have offered 10.17% return 1972 – 2007, with an 11.22% standard deviation. A 40/60, 9.55% return with an 8.54% SD. Just looking at this, I would say all but the Lionhearted or speculator would be better in a 40/60 portfolio in retirement.
Chin