Fund Evaluator:

MFS Blended Research Mid Cap Eq R1 Overview

MFS Blended Research Mid Cap Eq R1 (BMSRX) is an actively managed U.S. Equity Mid-Cap Blend fund. MFS launched the fund in 2016.

The investment seeks capital appreciation. The fund normally invests at least 80% of the fund’s net assets in equity securities of issuers with medium market capitalizations. Equity securities include common stocks, depositary receipts, equity interests in real estate investment trusts (REITs), and other securities that represent an ownership interest (or right to acquire an ownership interest) in a company or other issuer. The adviser may invest the fund's assets in foreign securities.

About MFS Blended Research Mid Cap Eq R1 (BMSRX)

There are 5 members of the management team with an average tenure of 6.20 years: Jonathan Sage (2016), John (Jed) Stocks (2016), Matthew Krummell (2016), Nathan Bryant (2026), Jenney Zhang (2026). Management tenure is more important for actively managed funds than passive index funds.

The fund has 2 primary benchmarks: Russell 3000 TR USD index with a weighting of 100% and Russell Mid Cap TR USD index with a weighting of 100%. MFS Blended Research Mid Cap Eq R1 has 158 securities in its portfolio. The top 10 holdings constitute 19.1% 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.

MFS Blended Research Mid Cap Eq R1 is part of the Equity global asset class and is within the U.S. Equity fund group. MFS Blended Research Mid Cap Eq R1 has 4.9% of its portfolio invested in foreign issues. The overall assets allocated to domestic stock is 94.1%. There is 4.9% 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). MFS Blended Research Mid Cap Eq R1 has 1.0% of the portfolio in cash.

Assets Under Management

The fund has $227 million in total assets, which is below 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.

BMSRX 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 MFS Blended Research Mid Cap Eq R1 expense ratio is high compared to funds in the Mid-Cap Blend category. MFS Blended Research Mid Cap Eq R1 has an expense ratio of 1.59%, which is 63% higher than its category average, making the fund expense ratio grade a F. 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. MFS Blended Research Mid Cap Eq R1 has a portfolio turnover rate of 51%, indicating that holds its assets around 0.0 years. By way of comparison, the average portfolio turnover is 51% for the Mid-Cap Blend category.

Recently, in the month of July 2026, MFS Blended Research Mid Cap Eq R1 returned -0.4%, which earned it a grade of B, as the Mid-Cap Blend category had an average return of -1.8%. 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.

MFS Blended Research Mid Cap Eq R1 has a trailing yield of 0.38%, which is below the 0.48% category average. The fund normally distributes its income annually 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.

MFS Blended Research Mid Cap Eq R1 Grades

Year to date, the fund has returned 18.3%, 5.3 percentage points better than the category, which translates into a grade of A. The fund has returned 21.7% over the past year (grade of B), 16.5% over the past three years (grade of A) and 10.1% per year over the past five years (grade of A).

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