Fund Evaluator:
Vanguard Mid Cap Index Admiral (VIMAX)
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Best Performing in Mid-Cap Blend Over the Last Year
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Fund Details
Vanguard Mid Cap Index Admiral Overview
Vanguard Mid Cap Index Admiral (VIMAX) is a passively managed U.S. Equity Mid-Cap Blend fund. Vanguard launched the fund in 2001.
The investment seeks to track the performance of the CRSP U.S. Mid Cap Index that measures the investment return of mid-capitalization stocks. The fund employs an indexing investment approach designed to track the performance of the CRSP U.S. Mid Cap Index, a broadly diversified index of stocks of mid-size U.S. companies. The advisor attempts to replicate the target index by investing all, or substantially all, of its assets in the stocks that make up the index, holding each stock in approximately the same proportion as its weighting in the index.
About Vanguard Mid Cap Index Admiral (VIMAX)
There are 2 members of the management team with an average tenure of 2.14 years: Aaron Choi (2023), Kenny Narzikul (2025). Management tenure is more important for actively managed funds than passive index funds.
The fund has 2 primary benchmarks: DJ US Total Stock Market TR USD index with a weighting of 100% and CRSP US Mid Cap TR USD index with a weighting of 100%. Vanguard Mid Cap Index Admiral has 299 securities in its portfolio. The top 10 holdings constitute 11.2% of the fund’s assets. The fund meets the SEC requirement of being classified as a diversified fund. The fund is not considered to have an ESG focus with its investment selection and management.
Vanguard Mid Cap Index Admiral is part of the Equity global asset class and is within the U.S. Equity fund group. Vanguard Mid Cap Index Admiral has 1.7% of its portfolio invested in foreign issues. The overall assets allocated to domestic stock is 97.7%. There is 1.7% allocated to foreign stock, and 0.0% is allocated to preferred stocks. The bond allocation as a percentage of total assets is 0.0% (0.0% domestic bond, 0.0% foreign bond and 0.0% convertible bond). Vanguard Mid Cap Index Admiral has 0.3% of the portfolio in cash.
Assets Under Management
The fund has $70 billion in total assets, which is above the $1 billion average for the Mid-Cap Blend category. Normally, lower assets under management translates to higher average expense ratios, and greater total assets are desired. However, for some investment categories, such as small-cap investing, it may be difficult for the manager to fully employ the desired active strategy if assets grow too large or too quickly.
VIMAX Performance and Fees
The expense ratio measures how much of a fund’s assets are used for administrative expenses and operating expenses, including adviser fees and fees for the transfer agent and custodial services. The Vanguard Mid Cap Index Admiral expense ratio is low compared to funds in the Mid-Cap Blend category. Vanguard Mid Cap Index Admiral has an expense ratio of 0.05%, which is 95% lower than its category average, making the fund expense ratio grade a A. While it is difficult to predict returns, it is known that high annual expense ratios reduce your rate of return, and excessive fees are difficult to overcome. Active management normally comes with higher expense ratios than passive index management. Certain investment categories such as small company and foreign also normally have higher expense ratios. It is best to compare fund expense ratios against the category averages for meaningful assessments.
High portfolio turnover can translate to higher expenses and lower aftertax returns. Vanguard Mid Cap Index Admiral has a portfolio turnover rate of 16%, indicating that holds its assets around 0.1 years. By way of comparison, the average portfolio turnover is 51% for the Mid-Cap Blend category.
Recently, in the month of June 2026, Vanguard Mid Cap Index Admiral returned 2.4%, which earned it a grade of F, as the Mid-Cap Blend category had an average return of 4.1%. The letter grades of A, B, C, D and F are based upon relative rankings within the investment category. A grade of A, for example, would indicate that the return is in the highest 20% for that time period compared to all funds in that category.
Vanguard Mid Cap Index Admiral has a trailing yield of 1.31%, which is above the 0.47% category average. The fund normally distributes its income quarterly and its capital gains annually.
It’s natural to seek the best-performing investments, but you must consider the relationship between risk and return and the impact of costs and taxes on your realized returns.
Vanguard Mid Cap Index Admiral Grades
Year to date, the fund has returned 11.8%, 3.5 percentage points worse than the category, which translates into a grade of D. The fund has returned 16.7% over the past year (grade of D), 15.3% over the past three years (grade of C) and 7.9% per year over the past five years (grade of D) and 11.8% per year over the past 10 years (grade of B).
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VIMAX Trailing NAV Total Returns Data as of 6/30/26
| Last Month |
Last Quarter |
Ann'l. 1Yr |
Ann'l. 3Yr |
Ann'l. 5Yr |
Ann'l. 10Yr |
|
| VIMAX Return (NAV) | 2.4% | 12.5% | 16.7% | 15.3% | 7.9% | 11.8% |
| VIMAX Grade | F | D | D | C | D | B |
| +/- Category | -1.7% | -1.9% | -5.3% | 0.6% | -0.3% | 0.8% |
| Mid-Cap Blend Avg | 4.1% | 14.4% | 22.0% | 14.7% | 8.2% | 11.0% |
| VIMAX Tax Cost Ratio | na | na | 0.4% | 0.4% | 0.4% | 0.4% |
VIMAX Annual NAV Total ReturnsData as of 6/30/26
| 2026 | 2025 | 2024 | 2023 | 2022 | 2021 | 2020 | 2019 | 2018 | 2017 | 2016 | |
| VIMAX Return (NAV) | 11.8% | 11.7% | 15.2% | 16.0% | -18.7% | 24.5% | 18.2% | 31.0% | -9.2% | 19.3% | 11.2% |
| VIMAX Grade | D | B | B | C | D | C | A | B | B | B | D |
| +/- Category | -3.5% | 3.7% | 1.7% | -0.4% | -3.6% | 0.2% | 4.9% | 2.6% | 1.1% | 3.1% | -3.3% |
| Mid-Cap Blend Avg | 15.3% | 8.0% | 13.5% | 16.4% | -15.1% | 24.3% | 13.3% | 28.5% | -10.3% | 16.1% | 14.6% |
| Risk Measures | |
| Standard Deviation: | 14.3% |
| Total Risk Index: | 1.18 - Above Average |
| Category Risk Index: | 0.92 - Below Average |
| Category Risk Grade: | B (22% Rank) |
| Beta: | 0.95 |
| R-Squared: | 75% |
| Leveraged Fund: | No |
| Inverse Fund: | No |
| Portfolio Characteristics | |
| Equity Investment Style: | Mid-Cap Blend |
| Bond Investment Style: | na |
| Yield: | 1.3% |
| Dividend Distribution: | Quarterly |
| Cap Gains Distribution: | Annually |
| Total Assets: | $221700 Mil |
| Fund Total Assets: | $70,661 Mil |
| Share Class Type: | ADM |
| Portfolio Turnover: | 16% |
Management Team
| Number of Managers: 2 | |||
| Longest Tenure: 2.9 years | |||
| Average Tenure: 2.1 years | |||
| Managers (Year): Choi Aaron (2023), Narzikul Kenny (2025) | |||
Portfolio Composition (as of 5/31/26)
| # of Holdings: | 299 |
| % in Top 10 Holdings: | 11.2% |
| Fund is Non-Diversified: | No |
| % in Foreign Issues: | 1.7% |
Portfolio Allocation |
|
| Domestic Stock: | 97.7% |
| Foreign Stock: | 1.7% |
| Preferred Stock: | 0.0% |
| Domestic Bond: | 0.0% |
| Foreign Bond: | 0.0% |
| Convertible Bond: | 0.0% |
| Other: | 0.3% |
| Cash: | 0.3% |
Purchase Information
| Fund Family: | Vanguard |
| Phone Number: | 800-662-7447 |
| Website: | www.vanguard.com |
| Status: | Open |
| Inception Date: | November 12, 2001 |
| Min. Initial Purchase: | $3,000 |
| Min. Initial IRA Purchase: | $ 0 |
| True No-Load: | Yes |
| Front Load Maximum: | 0.00% |
| Deferred Charge Maximum: | 0.00% |
| Redemption Charge Maximum: | 0.00% |
| 12b-1 Fee: | na |
Expenses and Fees | |
| Expense Ratio (%): | 0.05% ( Rating : Low ) |
| Category Average Expense Ratio (%): | 0.98% |
| Share Class: | Vanguard Mid Cap Index Institutional |
| Min. Subsequent Purchase: | $ 1 |
| Min. Subsequent IRA Purchase: | $ 0 |
