MFS Mid Cap Growth R6 (OTCKX)

Fund Assets	12.97B
Expense Ratio	0.65%
Min. Investment	$0.00
Turnover	54.00%
Dividend (ttm)	n/a
Dividend Yield	n/a
Dividend Growth	n/a
Payout Frequency	n/a
Ex-Dividend Date	Dec 9, 2025

Previous Close	29.09
YTD Return	2.29%
1-Year Return	-2.51%
5-Year Return	21.32%
52-Week Low	25.71
52-Week High	34.49
Beta (5Y)	0.95
Holdings	110
Inception Date	Jan 2, 2013

About OTCKX

MFS Mid Cap Growth Fund Class R6 is a mutual fund that focuses on capital appreciation by primarily investing at least 80% of its assets in U.S. companies with medium market capitalizations. The fund targets firms typically represented in the Russell Midcap Growth Index, spanning sectors such as technology, industrials, communication services, and consumer cyclicals. Its holdings often feature innovative, growing businesses like Monolithic Power Systems, Howmet Aerospace, and Spotify Technology, among others. Designed for institutional and retirement plan investors, the Class R6 share class offers no sales charges and maintains a below-average expense ratio of 0.66%. Portfolio management is overseen by experienced comanagers, ensuring disciplined investment selection and risk management. With approximately $15 billion in assets under management and nearly a quarter of assets in its top ten holdings, the fund plays a significant role as a core growth component in diversified portfolios. MFS Mid Cap Growth Fund Class R6 is recognized for providing targeted exposure to the mid-cap growth segment, aiming to harness the potential of companies positioned between early-stage expansion and established industry leadership.

• Fund Family: MFS
• Category: Mid-Cap Growth
• Performance Rating: Above Average
• Risk Rating: Below Average
• Stock Exchange: NASDAQ
• Ticker Symbol: OTCKX
• Share Class: R6
• Index: Russell MidCap Growth TR

Performance

OTCKX had a total return of -2.51% in the past year, including dividends. Since the fund's inception, the average annual return has been 11.06%.

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	0.33%
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
OTCIX	I	0.77%
OTCJX	R4	0.77%
OTCHX	R3	1.02%
OTCAX	A	1.02%

Top 10 Holdings

24.57% of assets

Name	Symbol	Weight
Monolithic Power Systems, Inc.	MPWR	3.20%
Live Nation Entertainment, Inc.	LYV	2.88%
Take-Two Interactive Software, Inc.	TTWO	2.84%
Natera, Inc.	NTRA	2.77%
Cloudflare, Inc.	NET	2.45%
Ascendis Pharma A/S	ASND	2.39%
Revolution Medicines, Inc.	RVMD	2.11%
Viking Holdings Ltd	VIK	2.00%
TKO Group Holdings, Inc.	TKO	1.99%
Snowflake Inc.	SNOW	1.95%

Dividend History

Ex-Dividend	Amount	Pay Date
Dec 9, 2025	$4.23291	Dec 10, 2025
Dec 10, 2024	$2.21958	Dec 11, 2024
Dec 9, 2021	$1.12487	Dec 10, 2021
Dec 10, 2020	$0.23469	Dec 11, 2020
Dec 12, 2019	$0.18164	Dec 12, 2019
Dec 13, 2018	$0.7252	Dec 13, 2018

Data Sources: Tiingo, Financial Modeling Prep, and more

Historical data is provided by Tiingo. Delayed stock pricing data is provided by Financial Modeling Prep. Several fund data points are also provided by Finnhub.

Last checked:

Sep 30, 2026

Data Sources Report a data error