MRGAX
MFS Core Equity Fund
MFS SERIES TRUST I
Expense ratio1
0.88%
Net assets2
$6.37B
Holdings2
169
Category
US Equity
2025 return3
12.40%

Investment objective & strategy

As of Dec. 29, 2025 · prospectus

Objective. The funds investment objective is to seek capital appreciation.

Strategy. MFS (Massachusetts Financial Services Company, the fund's investment adviser) normally invests at least 80% of the funds net assets in equity securities. Equity securities include common stocks, depositary receipts, and other securities that represent an ownership interest (or right to acquire an ownership interest) in a company or other issuer. In selecting investments for the fund, MFS is not constrained by any particular investment style. MFS may invest the funds assets in the stocks of companies it believes to have above average earnings growth potential compared to other companies (growth companies), in the stocks of companies it believes are undervalued compared to their perceived worth (value companies), or in a combination of growth and value companies. MFS may invest the … MFS (Massachusetts Financial Services Company, the fund's investment adviser) normally invests at least 80% of the funds net assets in equity securities. Equity securities include common stocks, depositary receipts, and other securities that represent an ownership interest (or right to acquire an ownership interest) in a company or other issuer. In selecting investments for the fund, MFS is not constrained by any particular investment style. MFS may invest the funds assets in the stocks of companies it believes to have above average earnings growth potential compared to other companies (growth companies), in the stocks of companies it believes are undervalued compared to their perceived worth (value companies), or in a combination of growth and value companies. MFS may invest the funds assets in securities of companies of any size. MFS may invest the funds assets in foreign securities. MFS normally invests the fund's assets across different industries and sectors, but MFS may invest a significant percentage of the fund's assets in issuers in a single industry or sector. A team of investment research analysts selects investments for the fund. MFS generally expects the fund's exposure to broad industry categories to approximate the exposure of the Russell 3000 Index to these broad industry categories using MFS' custom industry categories to classify the fund and the Russell 3000 Index's holdings. MFS uses an active bottom-up investment approach to buying and selling investments for the fund. Investments are selected primarily based on fundamental analysis of individual issuers. Quantitative screening tools that systematically evaluate issuers may also be considered. For purposes of the fund's 80% policy, net assets include the amount of any borrowings for investment purposes.

Top holdings

As of Feb. 28, 2026 · N-PORT
SecurityTickerValue% of fund
NVIDIA CORP $452.55M 7.11%
APPLE INC $375.13M 5.89%
MICROSOFT CORP $311.91M 4.90%
ALPHABET INC CL A $293.43M 4.61%
AMAZON.COM INC $259.16M 4.07%
BROADCOM INC $173.92M 2.73%
META PLATFORMS INC CL A $167.14M 2.63%
JOHNSON&JOHNSON $143.14M 2.25%
JPMORGAN CHASE and CO $128.83M 2.02%
GILEAD SCIENCES INC $124.96M 1.96%
View all holdings →

Allocation by sector

As of February 28, 2026 · N-PORT
View portfolio breakdown →

Portfolio moves

Nov 30, 2025 → Feb 28, 2026
Opened
19
Exited
27
Increased
31
Decreased
119
Unchanged
0

How many positions this fund opened, exited, grew, trimmed, or left unchanged between its two most recent N-PORT snapshots — net changes between point-in-time reports, not a trade log.

View portfolio moves →

Similar funds

Funds whose portfolios most overlap this one, by weight
FundOverlapNet exp.
MFS Core Equity Portfolio 94% 0.79%
Guardian All Cap Core VIP Fund 94% 0.83%
MFS Research Fund · MFRFX, MFRJX, MFRBX, MFRCX, MRFIX, MFRLX, MSRRX, MFRHX, MFRKX 75% 0.44%
View all similar funds →

Advisers

As of August 31, 2025 · N-CEN
FirmRole
MASSACHUSETTS FINANCIAL SERVICES COMPANY Adviser

Footnotes

  1. Expense ratio as of December 29, 2025, from the fund's prospectus.
  2. Net assets and holdings count as of February 28, 2026, from the fund's N-PORT filing.
  3. Total return for calendar year 2025, before tax and after fund expenses. Computed by compounding the twelve monthly total returns the fund reported in its SEC N-PORT filings for 2025 (the latest prospectus does not yet chart this year).

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