MassMutual Mid Cap Growth R4 (MEFFX)

Fund Assets	1.74B
Expense Ratio	1.122%
Min. Investment	$0.00
Turnover	38.00%
Dividend (ttm)	n/a
Dividend Yield	n/a
Dividend Growth	n/a
Payout Frequency	Annual
Ex-Dividend Date	Dec 15, 2025

Previous Close	10.74
YTD Return	4.27%
1-Year Return	5.29%
5-Year Return	2.50%
52-Week Low	9.66
52-Week High	13.98
Beta (5Y)	1.09
Holdings	189
Inception Date	Apr 1, 2014

About MEFFX

MassMutual Mid Cap Growth Fund Class R4 is an actively managed mutual fund focused on achieving long-term capital appreciation. The fund primarily invests in equity securities of mid-capitalization companies, which typically exhibit notable growth potential and operate across various sectors of the U.S. economy. Its investment approach targets firms with above-average earnings, sales, book value, and cash flow growth, as well as higher price ratios and lower dividend yields. This strategy positions the fund to benefit from companies in the expansion phase of their business lifecycle, often characterized by innovation and competitive market positioning. The fund’s selection process is handled by experienced subadvisers who seek out mid-cap stocks believed to offer compelling growth opportunities over time. MassMutual Mid Cap Growth Fund Class R4 plays a significant role in diversified investment portfolios by offering targeted exposure to the mid-cap growth segment, which can complement large-cap and small-cap holdings. With an established track record and a focus on growth, the fund serves institutional and individual investors aiming to harness the growth potential inherent in the dynamic mid-cap sector.

• Fund Family: MassMutual
• Category: Mid-Cap Growth
• Performance Rating: Average
• Risk Rating: Below Average
• Stock Exchange: Nasdaq
• Ticker Symbol: MEFFX
• Share Class: Class R4
• Index: Russell MidCap Growth TR

Performance

MEFFX had a total return of 5.29% in the past year, including dividends. Since the fund's inception, the average annual return has been 8.67%.

Equivalent Funds

These are funds that follow the same index from the other major fund companies.

Symbol	Provider	Name	Expense Ratio
VMGRX	Vanguard	Vanguard Mid-Cap Growth Fund Investor Shares	0.34%
FMDGX	Fidelity	Fidelity Mid Cap Growth Index Fund	0.05%

Other Share Classes

These are alternative share classes of the same fund, from the same provider.

Symbol	Share Class	Expense Ratio
MEFZX	Class I	0.66%
MGRFX	Class R5	0.76%
MMNGX	Class Y	0.76%
MEFYX	Service Class	0.86%

Top 10 Holdings

17.16% of assets

Name	Symbol	Weight
Datadog, Inc.	DDOG	2.07%
Agilent Technologies, Inc.	A	1.96%
Teradyne, Inc.	TER	1.83%
Mettler-Toledo International Inc.	MTD	1.76%
Snowflake Inc.	SNOW	1.64%
Fixed Income Clearing Corp. - FIXED INC CLEARING CORP.REPO	n/a	1.62%
Burlington Stores, Inc.	BURL	1.60%
Lattice Semiconductor Corporation	LSCC	1.58%
Keysight Technologies, Inc.	KEYS	1.57%
XPO, Inc.	XPO	1.52%

Dividend History

Ex-Dividend	Amount	Pay Date
Dec 15, 2025	$3.40193	Dec 16, 2025
Dec 13, 2024	$2.77547	Dec 16, 2024
Dec 13, 2023	$1.06829	Dec 14, 2023
Dec 14, 2022	$2.6319	Dec 15, 2022
Dec 16, 2021	$5.94839	Dec 17, 2021
Dec 14, 2020	$1.59387	Dec 15, 2020

Data Sources: Tiingo, Twelve Data, and more

Historical data is provided by Tiingo. Delayed stock pricing data is provided by Twelve Data. Several fund data points are also provided by Finnhub.

Last checked:

Oct 16, 2026

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