Vanguard Long-Term Treasury Index Fund Institutional Shares VLGIX

Vanguard Long-Term Treasury Idx Instl holds a quantitatively derived Gold Morningstar Medalist Rating. The rating reflects that it has scored particularly well on factors Morningstar research associates with future outperformance relative to category peers.

People: Above Average

Note: This share class' People Pillar rating and analysis are inherited from an analyst-covered share class under the same Strategy Provider Company (rolled up to Branding Name) and Morningstar Category Broad Group: Vanguard Total Bond Market ETF (SecID: FOUSA06C1Y).

Process: Above Average

The fund has a moderately concentrated portfolio and accurately represents the US Fund Long Government category's opportunity set. Passive investing has historically performed well in the US Fund Long Government category. Over the long term, passive funds have often outpaced their actively managed counterparts.

Performance (in US Dollar)

Over the past 12 months, Vanguard Long-Term Treasury Idx Instl share class returned 1%, mirroring its category index, the Bloomberg US Government Long TR USD Index (0.9%), but outperforming its Morningstar category peers (0.5%). Across 10 years, the fund returned -0.8% per year, mirroring the index (-0.8% per year) while outperforming its Morningstar Category average (-1% per year).

Price

Vanguard Long-Term Treasury Idx Instl's Prospectus Adjusted Expense Ratio is 0.03% per year. It places it in the cheapest quintile of the Morningstar US Fund Long Government Category, where the median fee is 0.18% per year. This cost positioning translates into a Medalist Rating Price Score of 1.98, which reflects its relative price positioning within the category. The Price Score ranges from -2.50 (most expensive) to +2.50 (cheapest), with higher scores indicating better cost competitiveness.

Vanguard Long-Term Treasury Idx Instl is assigned an Above Average Process rating. Morningstar's algorithmically assigned Passive Process ratings are first derived by comparing the historical efficacy of passive investments relative to active peers. For fixed-income funds, this category-level score is then adjusted based on the fund's characteristics, including its ability to diversify risk and represent the category's opportunity set. To maintain consistency and account for all available data, raw scores are averaged across funds tracking the same benchmark.

Representativeness

The fund accurately represents the Long Government category's opportunity set.

Diversification

The fund has a moderately concentrated portfolio, either based on its top-holdings exposure or its number of bond holdings relative to the category average.

Active versus Passive

Passive investing has historically performed well in the Long Government category. Over the long term, passive funds have often outpaced their actively managed counterparts.

Investment Strategy

The investment strategy as stated in the prospectus is: the investment seeks to track the performance of a market-weighted Treasury index with a long-term dollar-weighted average maturity. The fund employs an indexing investment approach designed to track the performance of the Bloomberg U.S. Long Treasury Index. This index includes fixed income securities issued by the U.S. Treasury (not including inflation-protected bonds, floating rate securities and certain other security types), with maturities greater than 10 years. Under normal circumstances, at least 80% of the fund's assets will be invested in bonds included in the index.

Vanguard's fixed-income index team has a lot of advantages. It taps into a global network of portfolio managers, sector specialists, and trading desks to deliver accurate index tracking in the markets that it touches. It earns an Above Average People Pillar rating.

Experienced managers make up Vanguard’s team. They’re supported by a deep bench of talent that allows them to focus on portfolio construction and tracking performance. Each fund has a lead manager who collaborates with traders and sector specialists to ensure tracking performance stays within well-defined guardrails.

Specialization extends in many directions. ETF specialists help manage creation and redemption baskets, while a dedicated data team handles index changes and corporate actions. International specialists help manage portfolios in local markets outside of the US to keep costs down and tracking tight.

Many bonds aren’t available for trading, so index funds cannot hold every bond in an index. Despite that drawback, Vanguard’s team has continued to invest in new ways to improve the precision of its tracking efforts while keeping a lid on trading costs. It recently expanded its quantitative unit, which developed an optimization tool that incorporates traders' insights and liquidity data to improve tracking performance.

Note: This share class' People Pillar rating and analysis are inherited from an analyst-covered share class under the same Strategy Provider Company (rolled up to Branding Name) and Morningstar Category Broad Group: Vanguard Total Bond Market ETF (SecID: FOUSA06C1Y).

Vanguard maintains its High Parent Pillar rating as it continues to grow under new leadership.

CEO Salim Ramji has had a busy first year captaining Vanguard’s crew, and the ship remains pointed in the right direction. The firm made its largest round of fee cuts in early 2025, which came at an estimated cost of USD 350 million. It established a separate division dedicated to its advice and wealth management efforts, a sign that it wants to seriously compete within those lines of business. Asset growth has continued to be a huge success. Only BlackRock’s inflows rival the money Vanguard is taking in. Likewise, the number of clients it serves has more than doubled since 2015.

Despite that success, an ever-growing number of clients has presented a challenge: Vanguard can’t grow its services fast enough to keep up with demand. In some instances, it has had to curb certain services and capabilities or raise fees on others to cope, causing some loyal clients to criticize what they perceive as deteriorating services.

Vanguard has ambitions to bring its disruptive legacy to the bond market. It created roughly a dozen low-cost bond exchange-traded funds for US investors and several others abroad over the 12 months through June 2025. All have low fees in their respective categories, and the actively managed strategies align with Vanguard’s philosophy. They are relatively easy to understand and are conservatively managed.

Vanguard has another opportunity to prove that clients are still its priority. On the surface, its endeavor into the high-fee deal-making world of private assets alongside Wellington and Blackstone looks like a cultural mismatch. So far, the collaboration hasn’t produced anything that’s concerning.

Note: This share class' Parent Pillar rating is analyst-driven, as its Branding Name, Vanguard (Branding Name ID: BN00000AAL), is covered by Morningstar Manager Research.

Performance is evaluated in US Dollar, measured to the end of April 2026.

Short-Term Performance

Over the past 12 months, Vanguard Long-Term Treasury Idx Instl share class returned 1%, mirroring its category index, the Bloomberg US Government Long TR USD Index (0.9%), but outperforming its Morningstar category peers (0.5%). Over the three-year period, it returned -1.9% per year, mirroring the index (-1.9% per year) while outperforming its Morningstar category peers (-2% per year).

Long-Term Performance

The fund's five-year annualized return of -5.2% fell short of the benchmark (-5.1% per year) but exceeded the Morningstar Category average (-5.4% per year). Over 10 years, the fund returned -0.8% per year, mirroring the index (-0.8% per year) but ahead of its Morningstar Category average (-1% per year).

Vanguard Long-Term Treasury Idx Instl's Prospectus Adjusted Expense Ratio is 0.03% per year. It places it in the cheapest quintile of the Morningstar US Fund Long Government Category, where the median fee is 0.18% per year. This cost positioning translates into a Medalist Rating Price Score of 1.98, which reflects its relative price positioning within the category. The Price Score ranges from -2.50 (most expensive) to +2.50 (cheapest), with higher scores indicating better cost competitiveness.