Deep fixed-income resources at both subadvisors support a disciplined and repeatable process that justifies an Above Average Process rating.
Vanguard and Wellington manage the portfolio in two distinct sleeves, with each subadvisor implementing its own style without collaboration. Wellington manages roughly two-thirds of the fund’s assets as of year-end 2025, though Vanguard has directed a gradual 50/50 split. As money enters or exits the fund, Vanguard uses cash flows to adjust allocations between subadvisors rather than making abrupt reallocations.
At Wellington, Scott St. John applies a time-tested credit research framework, drawing on quarterly discussions with the firm’s fixed-income managers to inform sector positioning and credit-quality tilts. He then taps into Wellington’s well-resourced analyst team and proprietary tools to construct the portfolio.
Vanguard’s process reflects a disciplined and thoughtful approach to credit risk. The firm’s senior fixed-income leaders develop macroeconomic scenarios to set broad risk parameters. Managers advocate for risk budget changes when they identify sustained risks or opportunities and collaborate with sector teams to shape the portfolio, while a dedicated risk team provides ongoing oversight.
The strategy best suits institutional investors seeking to match long-dated liabilities using long-duration, high-quality corporate bonds. The team’s long-term orientation and Vanguard’s disciplined approach result in one of the category’s lowest turnover profiles, as managers adjust exposures gradually as the market conditions evolve. The portfolio’s duration (a measure of interest rate sensitivity) tends to align with its Bloomberg US Long Credit A or Better Index and long-term bond category peer median.
This long-dated focus affects the portfolio's sector makeup, with most assets allocated to corporate debt (roughly 80% of assets as of December 2025), along with some taxable munis (8%) and Treasuries (8%). Both subadvisors primarily invest in higher-quality debt, though their credit mix may differ.
For instance, Wellington's credit-quality profile is typically higher than Vanguard's. Wellington's sleeve typically has around 5% of assets invested in BBB rated debt, whereas Vanguard's stake has consistently exceeded 10%. In December 2025, Vanguard's 12% stake was roughly 8 percentage points higher than Wellington's. Overall, the portfolio maintains a modest 7% allocation to BBB rated debt, significantly lower than its typical peers’, which hold more than a third of assets in BBB rated issues. The bulk of this portfolio’s assets (63%) were in A rated debt, and roughly 28% in AA and AAA rated bonds combined, which can add protection in rough credit markets.
Within the corporate bond allocation, the fund features about one-fifth of assets in financials, but because of the light supply of these issuers at the long end of the yield curve, the December 2025 portfolio held 19% in financials, with an emphasis on large US banks with strong balance sheets, along with some hard-hit regional bank debt added in early 2023. The portfolio still maintains most of its assets in industrials (45%).
To maintain its long duration, the portfolio typically keeps more than 60% in bonds with maturities longer than 20 years. The fund's duration typically sits within a year of its index, given Vanguard’s preference to avoid large interest rate bets. Its 12.2-year duration as of December 2025 was in line with its index and peer median.