ROYCE & ASSOCIATES LP

CIK

906304

City

New York

State / Country

Stock

MLAB — Mesa Laboratories Inc /Co/

Top Portfolio Positions

760 positions · $9,956,992,022 total · as of Mar 31, 2026

Ticker	Company	Shares	Value (USD)	% of Portfolio
ACA	Arcosa, Inc. Industrials	1,252,310	$132,920,183	1.33%
KWR	Quaker Chemical Corp Basic Materials	823,903	$102,353,469	1.03%
JBTM	JBT MAREL Corp Industrials	790,054	$101,024,204	1.01%
ESE	Esco Technologies Inc Technology	341,988	$96,225,163	0.97%
MKSI	Mks Inc Technology	403,670	$92,767,402	0.93%
AGO	Assured Guaranty Ltd Financial Services	982,147	$80,025,337	0.80%
ESAB	ESAB Corp Industrials	813,585	$78,641,126	0.79%
SEIC	Sei Investments Co Financial Services	996,456	$78,191,902	0.79%
IGIC	International General Insurance Holdings Ltd. Financial Services	3,224,979	$78,125,116	0.78%
UFPI	Ufp Industries Inc Basic Materials	824,386	$75,942,438	0.76%

25 quarters · across all stocks

26 quarters on record

Report Date	Value (USD)	Shares	Change	Type	Discretion	Filed
2026-03-31	$14,255,868	161,229	+5.1%	Shares	Sole	2026-05-12
2025-12-31	$12,038,132	153,352	+3.2%	Shares	Sole	2026-02-09
2025-09-30	$9,954,871	148,558	-40.0%	Shares	Sole	2025-11-12
2025-06-30	$23,329,437	247,606	-8.7%	Shares	Sole	2025-08-11
2025-03-31	$32,170,861	271,118	0.0%	Shares	Sole	2025-05-06
2025-03-31	$32,170,861	271,118	-5.6%	Shares	Sole	2025-04-30
2024-12-31	$37,873,987	287,207	-17.3%	Shares	Sole	2025-02-10
2024-09-30	$45,080,249	347,145	-12.0%	Shares	Sole	2024-11-06
2024-06-30	$34,230,851	394,501	+39.0%	Shares	Sole	2024-08-13
2024-03-31	$31,134,680	283,739	+5.2%	Shares	Sole	2024-05-13
2023-12-31	$28,250,706	269,645	+62.4%	Shares	Sole	2024-02-12
2023-09-30	$17,443,931	166,022	+4.0%	Shares	Sole	2023-11-09
2023-06-30	$20,509,756	159,609	+1.1%	Shares	Sole	2023-08-07
2023-03-31	$27,589,342	157,897	-1.7%	Shares	Sole	2023-05-23
2022-12-31	$26,689,503	160,577	-36.1%	Shares	Sole	2023-05-23
2022-09-30	$35,373,679	251,180	-9.5%	Shares	Sole	2022-11-03
2022-06-30	$56,587,435	277,471	-22.2%	Shares	Sole	2022-08-04
2022-03-31	$90,901,167	356,643	+4.1%	Shares	Sole	2022-05-05
2021-12-31	$112,455,472	342,758	+0.5%	Shares	Sole	2022-02-07
2021-09-30	$103,166,743	341,205	+2.5%	Shares	Sole	2021-11-10
2021-06-30	$90,230,732	332,746	+10.2%	Shares	Sole	2021-08-06
2021-03-31	$73,546,983	302,041	-1.7%	Shares	Sole	2021-05-10
2020-12-31	$88,070,999	307,253	-1.0%	Shares	Sole	2021-02-08
2020-09-30	$79,091,261	310,454	+1.4%	Shares	Sole	2020-11-12
2020-06-30	$66,401,504	306,280	+15.2%	Shares	Sole	2020-08-07
2020-03-31	$60,131,800	265,964	—	Shares	Sole	2020-05-12
No 13F history on record for this holder in this stock.