Duration Dynamics: Comparing VGIT and IEI for Treasury Exposure

While both the Vanguard Intermediate-Term Treasury ETF (VGIT) and the iShares 3-7 Year Treasury Bond ETF (IEI) provide exposure to U.S. government debt, their differing maturity ranges create distinct risk profiles for fixed-income investors. The core distinction is the duration gap. IEI maintains a strict maturity band of three to seven years, whereas VGIT extends its reach up to ten years. This broader window makes VGIT more sensitive to interest rate fluctuations, offering higher potential gains in a falling-rate environment but greater vulnerability if rates climb. From a cost and yield perspective, VGIT presents a more affordable option with a notably lower expense ratio and a slightly higher dividend yield. Its portfolio includes significant positions in Treasury notes maturing in 2034 and 2035. In contrast, IEI focuses on a tighter window, with top holdings maturing between 2029 and 2030. For portfolio managers, the choice depends on the desired role of the asset. IEI serves as a more predictable anchor for those already carrying significant equity risk or longer-duration bonds elsewhere. Conversely, VGIT is better suited for those seeking to maximize the ballast effect of Treasuries during anticipated rate cuts, providing more aggressive exposure to the intermediate part of the curve.