MEFFX Mutual Fund

NAV$11.02

TER1.11%

Holdings216

See how much of MEFFX you already own

Just $25 once·$99/mo·Download sample

X-ray my portfolio free

MEFFX Mutual Fund

NAV$11.02

MassMutual Mid Cap Growth Fund Class R4

TER1.11%

Holdings216

See how much of MEFFX you already own

Just $25 once·$99/mo·Download sample

X-ray my portfolio free

Overview Performance Chart Dividends Top Holdings All Holdings Sectors Geography Similar Compare Overlap

Showing top 50 of 215 holdings · as of Jun 30, 2026

MEFFX holdings, by weight
#	Ticker	Name	Weight	Cumulative	Shares	Mkt value	Sector	Industry
1	DDOG	Datadog IncInfo Tech · Software	2.07%	2.1%	198,711	$51.74M	Info Tech	Software
2	A	Agilent Technologies IncInfo Tech · Electronic Equipment	1.96%	4.0%	369,519	$49.08M	Info Tech	Electronic Equipment
Sector and industry · Pro
3	TER	Teradyne Inc -	1.83%	5.9%	94,860	$45.90M
4	MTD	Mettler-Toledo International Inc.	1.76%	7.6%	34,458	$44.02M
5	SNOW	Snowflake Inc	1.64%	9.3%	161,589	$41.12M
6	Debt	Fixed Inc Clearing Corp.Repo 07/01/2026	1.62%	10.9%	40,570,858	$40.57M
7	BURL	Burlington Stores Inc	1.60%	12.5%	126,376	$40.04M
8	LSCC	Lattice Semiconductor Corp.	1.58%	14.1%	258,870	$39.60M
9	KEYS	Keysight Technologies Inc.	1.57%	15.6%	112,462	$39.37M
10	—	Xpo Logistics Inc.	1.52%	17.1%	185,734	$38.13M
11	MTSI	Macom Technology Solutions Holdings, Inc.	1.42%	18.6%	93,448	$35.54M
12	—	Cloudflare Inc (180 Day Lockup)	1.38%	19.9%	140,744	$34.52M
13	YUM	Yum! Brands, Inc.	1.34%	21.3%	209,876	$33.55M
14	VIK	Viking Holdings Ltd. Ordinary Shares	1.33%	22.6%	317,322	$33.21M
15	ALNY	Alnylam Pharmaceuticals Inc.	1.28%	23.9%	106,075	$31.93M
16	ALAB	Astera Labs Inc -	1.19%	25.1%	61,933	$29.91M
17	MSCI	M S C I Inc.	1.12%	26.2%	49,860	$27.92M
18	RDDT	Reddit Inc-Cl A	1.10%	27.3%	158,314	$27.48M
19	VEEV	Veeva Systems Inc	1.10%	28.4%	154,701	$27.45M
20	AIZ	Assurant, Inc.	1.08%	29.5%	100,351	$26.95M
21	DLTR	Dollar Tree Inc.	1.07%	30.6%	221,290	$26.77M
22	RCL	Royal Caribbean Cruises Ltd.	1.07%	31.6%	84,334	$26.78M
23	NTRA	Natera Inc	1.04%	32.7%	96,267	$26.13M
24	VLTO	Veralto Corp	1.03%	33.7%	289,969	$25.71M
25	PTC	Ptc Inc	1.02%	34.7%	225,638	$25.63M
26	USFD	US Foods Holding Corp	1.01%	35.7%	247,460	$25.30M
27	FERG	Ferguson Enterprises	1.00%	36.7%	105,347	$25.00M
28	WST	West Pharmaceutical Services Inc	1.00%	37.7%	69,977	$25.12M
29	LITE	Lumentum Holdings Inc	0.98%	38.7%	28,590	$24.53M
30	—	Rocket Lab Corp	0.97%	39.7%	238,813	$24.28M
31	TYL	Tyler Technologies Inc	0.93%	40.6%	79,599	$23.28M
32	ULS	Ul Solutions Inc	0.91%	41.5%	224,557	$22.87M
33	PWR	Quanta Services Inc	0.90%	42.4%	31,157	$22.43M
34	COO	The Cooper Cos Inc	0.89%	43.3%	311,568	$22.34M
35	PSTG	Pure Storage Inc. Class A	0.88%	44.2%	278,193	$21.92M
36	ESAB	ESAB Corp	0.87%	45.1%	219,878	$21.69M
37	IR	Ingersoll Rand Inc	0.86%	45.9%	262,104	$21.49M
38	FTI	Technipfmc Plc Ordinary Shares	0.86%	46.8%	326,143	$21.62M
39	ODFL	Old Dominion Freig	0.83%	47.6%	95,522	$20.69M
40	MCHP	Microchip Technology Inc.	0.82%	48.4%	225,068	$20.53M
41	MDB	Mongodb, Inc.	0.82%	49.2%	60,835	$20.43M
42	HOOD	Robinhood Markets Inc - A	0.82%	50.1%	203,969	$20.45M
43	NYT	New York Times Co	0.79%	50.9%	283,955	$19.87M
44	POOL	Pool Corp.	0.79%	51.6%	91,933	$19.76M
45	TRU	Transunion -	0.79%	52.4%	274,364	$19.79M
46	ELAN	Elanco Animal Health, Inc Cvr	0.77%	53.2%	779,022	$19.17M
47	MANH	Manhattan Associates Inc	0.77%	54.0%	138,724	$19.32M
48	APG	Api Group Corp	0.74%	54.7%	439,749	$18.62M
49	—	Liberty Live Holdings C	0.73%	55.4%	172,996	$18.28M
50	FTAI	FTAI Aviation Ltd	0.73%	56.2%	67,480	$18.26M
More holdings · Pro

Not reported for this fund: share changes.

FundXLS Pro

See the other 165 holdings of MEFFX

X-ray every fund you own at once, ETFs and mutual funds that hold stocks directly, and see how much of your money lands on the same stocks twice.

Unlock FundXLS Pro$45/quarter Pro · Cancel anytime

MEFFX Mutual Fund All Holdings

MEFFX holdings total 216 positions. The top 10 holdings account for 17.1% of the fund, led by Datadog Inc at 2.1%, Agilent Technologies Inc at 2.0%, Teradyne Inc - Common at 1.8%.

MEFFX portfolio concentration is well-diversified, with the top 10 representing 17.1% of total assets. The largest sector exposure is Information Technology at 33.3%.

MEFFX sectors provide a detailed breakdown. MEFFX overlap shows how holdings compare to other funds in your portfolio.