Select Equity Group’s Mesa Laboratories MLAB Stock Holding History

Select Equity Group’s Portfolio MLAB Stock Details MLAB Fund Activity

Bought

Maintained

Sold

Quarter	Market Value	Status	Shares	Change in Stake	Trade Value	Portfolio Weight	Portfolio Position
2026 Q1	$20.9M	Buy	235,885 +29,450	+14%	+$2.54M	0.11%	107
2025 Q4	$16.2M	Buy	206,435 +79,720	+63%	+$6.06M	0.07%	129
2025 Q3	$8.49M	Buy	126,715 +24,517	+24%	+$1.76M	0.04%	142
2025 Q2	$9.63M	Buy	102,198 +28,301	+38%	+$3.11M	0.04%	127
2025 Q1	$8.77M	Buy	73,897 +60,186	+439%	+$8.2M	0.04%	117
2024 Q4	$1.81M	Buy	13,711 +684	+5%	+$84K	0.01%	124
2024 Q3	$1.69M	Buy	13,027 +4,754	+57%	+$559K	0.01%	124
2024 Q2	$718K	Sell	8,273 -1,098	-12%	-$115K	﹤0.01%	155
2024 Q1	$1.03M	Hold	9,371	–	–	﹤0.01%	149
2023 Q4	$982K	Sell	9,371 -282	-3%	-$27.5K	﹤0.01%	153
2023 Q3	$1.01M	Sell	9,653 -3,019	-24%	-$387K	﹤0.01%	160
2023 Q2	$1.63M	Buy	12,672 +10,161	+405%	+$1.55M	0.01%	142
2023 Q1	$439K	Buy	+2,511	New	+$450K	﹤0.01%	157

Other funds holding MLAB

LPP

Long Path Partners Stamford, Connecticut $235M AUM 22.51% 1-Year Est. Return

BlackRock New York $5.72T AUM 30.48% 1-Year Est. Return

Boston Partners Boston, Massachusetts $95.5B AUM 28.4% 1-Year Est. Return

VCM

Vanguard Capital Management Malvern, Pennsylvania $4.04T AUM

RIM

Ranger Investment Management Dallas, Texas $1.38B AUM 24.55% 1-Year Est. Return

AQR Capital Management Greenwich, Connecticut $218B AUM 29.41% 1-Year Est. Return

Morgan Stanley New York $1.66T AUM 25.57% 1-Year Est. Return

Royce & Associates New York $10.1B AUM 42.88% 1-Year Est. Return

Diamond Hill Capital Management Columbus, Ohio $16B AUM 4.15% 1-Year Est. Return

KCM

Kennedy Capital Management St Louis, Missouri $4.72B AUM 36.69% 1-Year Est. Return

Select Equity Group's MLAB Position: Q1 2026 in Review

Select Equity Group increased its Mesa Laboratories (MLAB) stake by 14% in Q1 2026, buying an estimated $2.54M and bringing the position to 235,885 shares worth $20.9M. The position accounts for 0.11% of the portfolio, ranked #107.

Select Equity Group first reported a position in MLAB in Q1 2023 and has held it in 13 quarters since. 161 funds tracked by Wall St. Rank hold MLAB as of Q1 2026.

Select Equity Group held 235,885 shares of Mesa Laboratories worth $20.9M as of Q1 2026.
Select Equity Group bought 29,450 Mesa Laboratories shares in Q1 2026, an estimated $2.54M.
Mesa Laboratories made up 0.11% of Select Equity Group's portfolio in Q1 2026, its #107 holding.
Select Equity Group first reported a position in Mesa Laboratories in Q1 2023 and has held it in 13 quarters since.
161 funds tracked by Wall St. Rank held Mesa Laboratories as of Q1 2026.

Based on Select Equity Group's 13F filing for Q1 2026, filed 15 May 2026.