Conventional wisdom suggests that retirees should own a “moderate” amount of equity exposure at the time of retirement – to help their portfolio grow and keep up with inflation for a long time horizon – and then slowly decrease their exposure to equities over time as they age and their time horizon shrinks. However, recent research has suggested that the optimal approach might actually be the opposite, to start with less equity exposure early in retirement when the portfolio is largest and most exposed to a significant market decline, and then “glide” the equity exposure slightly higher each year throughout retirement.
As it turns out, though, a better approach may be to accelerate that rising equity glidepath a bit further; after all, the last bit of equity increase in the last year of retirement isn’t really likely to matter. Instead, the better rising equity glidepath approach is to just increase equities in the first half of retirement until it reaches the target threshold, and then level off. For instance, instead of gliding from 30% to 60% in equities over 30 years, glide up to 60% over 15 years and then maintain that 60% equity exposure for the rest of retirement (assuming it’s consistent with client risk tolerance in the first place).
Notably, accelerating the glidepath also reduces the amount of time that the portfolio is “bond-heavy” – a particular concern for many in today’s low-interest-rate environment. In the end, though, it may be even more effective to simply take interest rate risk off the table by owning short-term bonds instead; while such an approach leads to less wealth “on average”, in low-return environments rising equity glidepaths using stocks and Treasury Bills can actually be superior to traditional portfolios using stocks and (longer duration, e.g., 10-year Treasury) bonds, even though Treasury Bills provide lower yields!