MFS Blended Research Mid Cap Equity Fund I (BMSLX)

Fund Assets	3.52B
Expense Ratio	0.61%
Min. Investment	$0.00
Turnover	51.00%
Dividend (ttm)	0.11
Dividend Yield	0.63%
Dividend Growth	-20.79%
Payout Frequency	Annual
Ex-Dividend Date	Dec 11, 2025

Previous Close	17.03
YTD Return	15.06%
1-Year Return	16.56%
5-Year Return	53.58%
52-Week Low	14.47
52-Week High	18.30
Beta (5Y)	1.14
Holdings	169
Inception Date	Aug 19, 2016

About BMSLX

MFS Blended Research Mid Cap Equity Fund I is an actively managed mutual fund focused on capital appreciation through investment in U.S. mid-capitalization equities. The fund employs a distinctive approach that integrates both fundamental analysis and quantitative research within a disciplined stock selection and portfolio construction process. Its strategy emphasizes identifying high-quality companies trading at favorable valuations with catalysts that may be recognized over the long term. Managed by an experienced investment team, the fund benchmarks its performance against the Russell Midcap Index, seeking to maintain a low predicted tracking error relative to this standard. Its portfolio typically displays broad sector exposure, with significant allocations to industries such as financial services, healthcare, industrials, and technology. Notable holdings include companies like Ameriprise Financial, Hartford Financial Services, and Veeva Systems. The fund is recognized for a competitive cost structure, with expense ratios positioned in the second-lowest quintile among peers. This disciplined, research-driven process positions the MFS Blended Research Mid Cap Equity Fund I as a significant vehicle for gaining diversified exposure to the U.S. mid-cap equity space, serving the needs of investors seeking a blend of active management and analytical rigor in their portfolios.

• Fund Family: MFS
• Category: Mid-Cap Blend
• Performance Rating: Above Average
• Risk Rating: Average
• Stock Exchange: Nasdaq
• Ticker Symbol: BMSLX
• Share Class: I
• Index: Russell MidCap TR

Performance

BMSLX had a total return of 16.56% in the past year, including dividends. Since the fund's inception, the average annual return has been 11.48%.

Equivalent Funds

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

Symbol	Provider	Name	Expense Ratio
FLAPX	Fidelity	Fidelity Flex Mid Cap Index Fund	n/a
FSMDX	Fidelity	Fidelity Mid Cap Index Fund	0.03%
SWMCX	Schwab	Schwab ® US Mid-Cap Index	0.04%

Other Share Classes

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

Symbol	Share Class	Expense Ratio
BMSYX	R6	0.51%
BMSVX	R4	0.59%
BMSTX	R3	0.84%
BMSFX	A	0.84%

Top 10 Holdings

17.80% of assets

Name	Symbol	Weight
Illumina, Inc.	ILMN	2.18%
Okta, Inc.	OKTA	2.10%
Humana Inc.	HUM	1.78%
Northern Trust Corporation	NTRS	1.76%
DexCom, Inc.	DXCM	1.73%
Westinghouse Air Brake Technologies Corporation	WAB	1.69%
Aramark	ARMK	1.67%
Ameriprise Financial, Inc.	AMP	1.67%
Teradyne, Inc.	TER	1.65%
Hewlett Packard Enterprise Company	HPE	1.57%

Dividend History

Ex-Dividend	Amount	Pay Date
Dec 11, 2025	$0.45652	Dec 12, 2025
Dec 12, 2024	$1.55011	Dec 13, 2024
Dec 14, 2023	$0.30378	Dec 15, 2023
Dec 13, 2022	$0.57539	Dec 14, 2022
Dec 14, 2021	$3.13388	Dec 15, 2021
Dec 15, 2020	$0.1251	Dec 16, 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:

Nov 7, 2026

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