A target date fund (TDF) – also known as a lifecycle, dynamic-risk or age-based fund – is a collective investment scheme, often a mutual fund or a collective trust fund, designed to provide a simple investment solution through a portfolio whose asset allocation mix becomes more conservative as the target date (usually retirement) approaches.
Target-date funds were invented by Donald Luskin and Larry Tint of Wells Fargo Investment Advisors (later Barclays Global Investors), and first introduced in the early 1990s by BGI. Their popularity in the US increased significantly in recent years due in part to the auto-enrollment legislation Pension Protection Act of 2006 that created the need for safe-harbor type Qualifying Default Investment Alternatives, such as target-date funds, for 401(k) savings plans. With the UK enacting auto-enrollment legislation in 2012, target-date funds are used by NEST National Employment Savings Trust, and are expected to become increasingly popular as their design should satisfy the DWP's eligible default fund criteria.
Target-date funds are aimed at people planning for retirement and have appeal because they offer a lifelong managed investment strategy so should remain appropriate to an investor's risk profile even if left accidentally unreviewed. Research suggests that age is by far the most important determinant in setting an investment strategy, thus Target Date, or age-based funds are particularly attractive as default investment funds. They do not offer a guaranteed return but offer a convenient multi-asset retirement savings strategy through a single outcome-oriented fund.
Target-date funds' asset allocation mix typically provides exposure to return-seeking assets, such as equities, in early years when risk capacity is higher, and becomes increasingly conservative as time progresses with exposure switched progressively towards capital-preservation assets, such as government- and index-linked bonds.
The speed with which a target date fund de-risks its asset allocation is known in the industry as the "glide-path", using the analogy of an airplane (the fund, presumably) coming in for a landing (the landing being, presumably, arriving at the Target Date with the appropriately low-risk mix of underlying assets).