MSERX Mutual Fund

NAV$8.84

TER1.30%

Holdings251

See how much of MSERX you already own

Just $25 once·$99/mo·Download sample

X-ray my portfolio free

MSERX Mutual Fund

NAV$8.84

MassMutual Small Cap Growth Equity Fund Class R4

TER1.30%

Holdings251

See how much of MSERX 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 251 holdings · as of Sep 30, 2026

MSERX holdings, by weight
#	Ticker	Name	Weight	Cumulative	Shares	Mkt value	Sector	Industry
1	CHRD	Chord Energy CorpEnergy · Oil & Gas	1.78%	1.8%	86,592	$11.61M	Energy	Oil & Gas
2	PTGX	Protagonist Therapeutics IncHealth Care · Biotechnology	1.38%	3.2%	63,821	$8.99M	Health Care	Biotechnology
Sector and industry · Pro
3	XMTR	Xometry, Inc.	1.34%	4.5%	85,134	$8.76M
4	Debt	Fixed Inc Clearing Corp.Repo	1.24%	5.7%	8,081,383	$8.08M
5	—	Wisdomtree Investments Inc	1.19%	6.9%	318,877	$7.75M
6	LGND	Ligand Pharmaceuticals, Inc.	1.18%	8.1%	24,616	$7.69M
7	AIT	Applied Industrial Technologies Inc	1.07%	9.2%	21,063	$7.00M
8	VIAV	Viavi Solutions Inc	1.05%	10.2%	163,844	$6.87M
9	SITM	Sitime Corp	1.03%	11.3%	10,369	$6.76M
10	TWST	Twist Bioscience Corp.	1.02%	12.3%	34,461	$6.66M
11	AMPL	Amplitude Inc-Class A	0.99%	13.3%	467,160	$6.47M
12	FROG	Jfrog Ltd	0.99%	14.3%	66,986	$6.50M
13	RGEN	Repligen Corp	0.95%	15.2%	32,299	$6.21M
14	WHD	Cactus Inc.	0.94%	16.1%	99,098	$6.17M
15	ABCB	Ameris Bancorp	0.93%	17.1%	76,274	$6.07M
16	AHR	American Healthcare REIT Inc	0.88%	18.0%	111,586	$5.72M
17	BTSG	Brightspring Health	0.87%	18.8%	100,262	$5.69M
18	HNGE	Hinge Health Inc Ordinary Shares - Class A	0.87%	19.7%	58,274	$5.67M
19	—	Life Time Inc	0.85%	20.6%	139,288	$5.55M
20	HALO	Halozyme Therapeutics Inc	0.84%	21.4%	49,637	$5.48M
21	SBCF	Seacoast Banking Corp Of Florida	0.84%	22.2%	172,732	$5.50M
22	AXSM	Axsome Therapeutics Inc	0.83%	23.1%	29,457	$5.43M
23	—	Enpro Industries Inc	0.82%	23.9%	17,475	$5.35M
24	SIMO	Silicon Motion Technology Corp., ADR	0.82%	24.7%	19,161	$5.37M
25	PECO	Phillips Edison & Company Inc.	0.79%	25.5%	139,140	$5.20M
26	SANM	Sanmina Corp	0.79%	26.3%	24,134	$5.19M
27	RUSHA	Rush Enterprises Inc	0.77%	27.0%	109,413	$5.01M
28	SKY	Champion Homes Inc	0.76%	27.8%	57,590	$4.94M
29	DXPE	Dxp Enterprises Inc	0.75%	28.6%	27,187	$4.93M
30	LFUS	Littelfuse Inc	0.73%	29.3%	11,278	$4.78M
31	BBIO	Bridgebio Pharma Inc	0.72%	30.0%	71,396	$4.70M
32	FIVE	Five Below	0.72%	30.7%	21,454	$4.71M
33	HASI	Ha Sustainable Infrastructure Capital Inc	0.72%	31.4%	130,597	$4.68M
34	INTA	Intapp Inc	0.72%	32.2%	129,242	$4.68M
35	COGT	Cogent Biosciences Inc	0.71%	32.9%	145,402	$4.66M
36	CYTK	Cytokinetics Inc	0.70%	33.6%	69,799	$4.60M
37	ESE	Esco Technologies Inc	0.68%	34.3%	16,879	$4.47M
38	GKOS	Glaukos Corp.	0.66%	34.9%	26,094	$4.28M
39	CGNX	Cognex Corp -	0.63%	35.5%	67,937	$4.12M
40	—	Zurn Water Solutions Corp	0.63%	36.2%	88,866	$4.13M
41	CHEF	Chefs' Warehouse, Inc.	0.62%	36.8%	35,958	$4.03M
42	ALGM	Allegro Microsystems, Inc.	0.61%	37.4%	108,945	$3.96M
43	DAVE	Dave Inc	0.61%	38.0%	12,401	$3.99M
44	—	Mercury Computer Sys	0.61%	38.6%	47,984	$3.98M
45	AGYS	Agilysys Inc	0.59%	39.2%	39,830	$3.87M
46	CARG	Cargurus Inc .	0.59%	39.8%	123,654	$3.85M
47	TTMI	Ttm Technologies Sedol 2635659	0.57%	40.4%	30,535	$3.75M
48	SPNT	Siriuspoint Ltd. Common Shares	0.57%	41.0%	152,846	$3.71M
49	COCO	The VITA COCO CO INC	0.56%	41.5%	64,022	$3.67M
50	CBT	Cabot Corp	0.55%	42.1%	46,413	$3.57M
More holdings · Pro

Not reported for this fund: share changes.

FundXLS Pro

See the other 201 holdings of MSERX

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

MSERX Mutual Fund All Holdings

MSERX holdings total 251 positions. The top 10 holdings account for 12.3% of the fund, led by Chord Energy Corp at 1.8%, Protagonist Therapeutics Inc at 1.4%, Xometry, Inc. at 1.3%.

MSERX portfolio concentration is well-diversified, with the top 10 representing 12.3% of total assets. The largest sector exposure is Health Care at 23.4%.

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