MEFZX Mutual Fund

NAV$17.68

AUM$1.8B

TER0.66%

Holdings216

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MEFZX Mutual Fund

NAV$17.68

MassMutual Mid Cap Growth Fund Class I

AUM$1.8B

TER0.66%

Holdings216

See how much of MEFZX you already own

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

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

MEFZX 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.

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MEFZX Mutual Fund All Holdings

MEFZX 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%.

MEFZX 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%.

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