For the past 20 years, due both to the growing research on safe withdrawal rates, the adoption of Monte Carlo analysis, and just a difficult period of market returns, there has been an increasing awareness of the importance and impact that market volatility can have on a retiree's portfolio. Often dubbed the phenomenon of "sequence risk", retirees are cautioned that they must either spend conservatively, buy guarantees, or otherwise manage their investments to help mitigate the danger of a sharp downturn in the early years.
One popular way to manage the concern of sequence risk is through so-called "bucket strategies" that break parts of the portfolio into pools of money to handle specific goals or time horizons. For instance, a pool of cash might cover spending for the next 3 years, an account full of bonds could handle the next 5-7 years, and equities would only be needed for spending more than a decade away, "ensuring" that no withdrawals will need to occur from the portfolio if there is an early market decline.
Yet the reality is that strict implementation of a bucket strategy is more than just an exercise in mental accounting; it can actually distort the portfolio's asset allocation, leading to an increasing amount of equity exposure over time as fixed income assets are spent down while equities continue to grow. Yet recent research shows that despite the contrary nature of the strategy - allowing equity exposure to increase during retirement when conventional wisdom suggests it should decline as clients age - it turns out that a "rising equity glidepath" actually does improve retirement outcomes! If market returns are bad in the early years, a rising equity glidepath ensures that clients will dollar cost average into markets at cheaper and cheaper valuations; and if markets are good... well, clients won't have a lot to worry about in retirement anyway (except perhaps how much excess money will be left over at the end of their life).
Of course, the challenge to utilizing a rising equity glidepath strategy with clients is that many would obviously be concerned about having more equity exposure during their later retirement years. Yet the research shows that rising glidepaths can be so effective, they may actually lead to lower average equity exposure throughout retirement, even while obtaining more favorable outcomes. And ironically, it turns out that for those who do want to implement a rising equity glidepath, the best approach might actually be to explain it to clients as a bucket strategy in the first place!