Mfs Research Fund Class B (MFRBX) Fund Details & Analysis

Fund Information

Fund Category Large Blend

Fund Family MFS

Fund Style Large Blend

ISIN US5529812019

CUSIP 552981201

Inception Date 1971-10-13

Domicile United States

Country USA

Fiscal Year End September

NAV Chart

Fund Metrics

Net Assets $8.08 Billion

Share Class Net Assets $2.02 Million

Expense Ratio 1.50%

Expense Ratio Date 2026-01-28

Dividend Yield 0.00%

Morning Star Rating -

Morning Star Risk Rating -

Morning Star Category -

Performance

YTD Return 0.70%

1-Year Return 11.69%

3-Year Return 16.68%

5-Year Return 10.16%

NAV $46.32

Previous Close Price $46.01

Last Update 2025-12-31

Dividend Information

Dividend Yield 0.00%

Dividend (ttm) 0.17

Dividend Growth -58.12%

Payout Frequency Annual

Ex-Dividend Date n/a

Ratings

Morning Star Rating -

Morning Star Risk Rating -

Morning Star Category -

Beta (5Y) 1.23

About MFS Research Fund Class B

The fund normally invests its assets primarily 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.

Detailed Metrics

Market Cap Distribution

AverageMarketCap 368620.04%

Giant 46.54%

Large 30.26%

Medium 20.42%

Micro 0.00%

Small 1.84%

Value & Growth Metrics

Book-Value Growth % 10.05%

Cash-Flow Growth % 12.90%

Dividend Yield % 1.15%

Historical Earnings % 11.08%

Long-Term Earnings % 10.51%

Asset Allocation

Type	Net %	Long %	Short %	Category Average	benchmark
Bond	0.00%	0.00%	0.00%	0.68%	0.00%
Cash	0.93%	0.93%	0.00%	1.41%	0.00%
Non US Stock	1.82%	1.82%	0.00%	2.35%	0.78%
Not Classified	0.00%	0.00%	0.00%	0.03%	0.00%
Other	0.00%	0.00%	0.00%	1.28%	0.00%
US Stock	97.25%	97.25%	0.00%	96.32%	99.22%

Top Holdings

Name	Weight	Owned	Change
Microsoft Corp.	8.42%	-	-
Amazon.com, Inc.	4.54%	-	-
NVIDIA Corp.	7.34%	-	-
Alphabet, Inc., Class A	3.53%	-	-
Apple, Inc.	5.84%	-	-
Meta Platforms, Inc., Class A	4.01%	-	-
Visa, Inc., Class A	3.46%	-	-
JPMorgan Chase Co.	2.63%	-	-
Salesforce, Inc.	1.53%	-	-
ConocoPhillips	1.37%	-	-
Johnson Johnson	1.51%	-	-
Broadcom, Inc.	3.40%	-	-
Mastercard, Inc., Class A	2.83%	-	-
RTX Corp.	1.42%	-	-

See the full breakdown of MFRBX fund's asset allocation and top holdings .

Sector Weights

Category	Subcategory	Amount %	Category Avg	Stocks %	Benchmark
Bond Sector	Cash and Equivalents	2.19%	70.94%	100.00%	0.00%
Bond Sector	Corporate	2.19%	4.08%	0.00%	0.00%
Bond Sector	Derivative	2.19%	0.00%	0.00%	0.00%
Bond Sector	Government	2.19%	11.47%	0.00%	0.00%
Bond Sector	Municipal	2.19%	0.00%	0.00%	0.00%
Bond Sector	Securitized	2.19%	13.51%	0.00%	0.00%
Cyclical	Basic Materials	1.22%	1.99%	0.00%	1.79%
Cyclical	Consumer Cyclical	8.93%	10.14%	0.00%	10.57%
Cyclical	Financial Services	13.72%	13.84%	0.00%	12.53%
Cyclical	Real Estate	0.54%	1.58%	0.00%	1.71%
Defensive	Consumer Defensive	4.34%	4.74%	0.00%	4.85%
Defensive	Healthcare	10.01%	10.47%	0.00%	9.43%
Defensive	Utilities	2.19%	2.28%	0.00%	2.20%
Sensitive	Communication Services	10.37%	10.31%	0.00%	11.37%
Sensitive	Energy	3.45%	2.88%	0.00%	3.19%
Sensitive	Industrials	11.13%	9.64%	0.00%	8.28%
Sensitive	Technology	34.09%	32.13%	0.00%	34.10%

World Regions

Region	Subregion	Category Average	Stocks Percent	Benchmark
Americas	Latin America	0.09%	-	0.20%
Americas	North America	98.02%	99.10%	99.23%
Greater Asia	Asia Developed	0.38%	-	0.03%
Greater Asia	Asia Emerging	0.17%	-	0.11%
Greater Asia	Australasia	0.00%	-	-
Greater Asia	Japan	0.07%	-	-
Greater Europe	Africa/Middle East	0.02%	-	-
Greater Europe	Europe Developed	0.83%	0.90%	0.37%
Greater Europe	Europe Emerging	-	-	-
Greater Europe	United Kingdom	0.42%	-	0.06%

Dividend History

Date	Amount	Unadjusted Amount	Currency	Declaration Date	Record Date	Payment Date	Period
2024-12-10	$0.000	$0.000	None	-	-	-	-
2023-12-12	$0.000	$0.000	None	-	-	-	-
2022-12-08	$0.000	$0.000	None	-	-	-	-
2021-12-09	$0.000	$0.000	None	-	-	-	-
2020-12-10	$0.000	$0.000	None	-	-	-	-
2019-12-12	$0.033	$0.033	USD	2019-12-12	2019-12-12	2019-12-12	Annual
2018-12-13	$0.048	$0.048	USD	2018-12-13	2018-12-13	2018-12-13	Other
2017-12-19	$0.138	$0.138	USD	2017-12-19	2017-12-19	2017-12-19	Other
2016-12-20	$0.097	$0.097	USD	2016-12-20	2016-12-20	2016-12-20	Other
2015-12-17	$0.006	$0.006	USD	2015-12-17	2015-12-17	2015-12-17	Other
2014-12-19	$1.897	$1.897	USD	2014-12-18	2014-12-18	2014-12-18	Other
2014-12-18	$0.000	$0.000	None	-	-	-	-
2013-12-18	$0.781	$0.781	USD	2013-12-17	2013-12-17	2013-12-17	Other
2013-12-17	$0.097	$0.097	USD	-	-	-	-
2009-12-18	$0.043	$0.043	USD	-	2009-12-17	2009-12-17	Annual
2009-12-17	$0.043	$0.000	None	-	-	-	-
2004-08-31	$0.036	$0.036	USD	-	-	-	-
2003-12-31	$0.011	$0.011	USD	-	-	-	-
2003-12-03	$0.011	$0.011	USD	-	2003-12-02	2003-12-02	Annual
2003-12-02	$0.011	$0.000	None	-	-	-	-
2000-12-05	$3.337	$3.337	USD	-	2000-12-04	2000-12-04	Other
2000-12-04	$0.000	$0.000	None	-	-	-	-
1999-12-13	$2.140	$2.140	USD	-	1999-12-10	1999-12-10	Other
1999-12-10	$0.000	$0.000	None	-	-	-	-
1998-12-11	$0.952	$0.952	USD	-	1998-12-10	1998-12-10	Other
1998-12-10	$0.000	$0.000	None	-	-	-	-
1997-12-23	$0.331	$0.331	USD	-	1997-12-23	1997-12-23	Other
1996-12-23	$0.000	$0.000	None	-	-	-	-
1995-12-29	$0.591	$0.591	USD	-	1995-12-28	1995-12-29	Annual
1995-12-28	$0.378	$0.378	USD	-	1995-12-28	1995-12-29	Annual
1994-12-30	$0.033	$0.033	USD	-	1994-12-29	1994-12-30	Other
1994-12-29	$0.003	$0.003	USD	-	-	-	-
1994-09-29	$1.249	$1.249	USD	-	1994-09-28	1994-10-11	Other
1993-12-28	$0.023	$0.000	None	-	-	-	-

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MFS Research Fund Class B NMFQS:MFRBX