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 Q2	–	Sell	-235,885	Closed	-$20.9M	–	182
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 $6.73T AUM 46.02% 1-Year Est. Return

Boston Partners Boston, Massachusetts $113B AUM 38.87% 1-Year Est. Return

Vanguard Capital Management Malvern, Pennsylvania $4.68T AUM

AQR Capital Management Greenwich, Connecticut $287B AUM 42.33% 1-Year Est. Return

RIM

Ranger Investment Management Dallas, Texas $1.58B AUM 51% 1-Year Est. Return

Morgan Stanley New York $1.89T AUM 35.08% 1-Year Est. Return

Diamond Hill Capital Management Columbus, Ohio $12.5B AUM 7.49% 1-Year Est. Return

Raymond James Financial St Petersburg, Florida $369B AUM 28.27% 1-Year Est. Return

Dimensional Fund Advisors Austin, Texas $552B AUM 44.19% 1-Year Est. Return

Select Equity Group's MLAB Position: Q2 2026 in Review

Select Equity Group sold out of Mesa Laboratories (MLAB) in Q2 2026, closing a stake of 235,885 shares — an estimated $20.9M sold.

Select Equity Group first reported a position in MLAB in Q1 2023 and held it in 13 quarters. The position peaked at $20.9M in Q1 2026. 159 funds tracked by Wall St. Rank hold MLAB as of Q2 2026.

Select Equity Group reported no remaining Mesa Laboratories position as of Q2 2026 after selling out during the quarter.
Select Equity Group sold 235,885 Mesa Laboratories shares in Q2 2026, an estimated $20.9M.
Select Equity Group first reported a position in Mesa Laboratories in Q1 2023 and held it in 13 quarters.
Select Equity Group's Mesa Laboratories position peaked at $20.9M in Q1 2026.
159 funds tracked by Wall St. Rank held Mesa Laboratories as of Q2 2026.

Based on Select Equity Group's 13F filing for Q2 2026, filed 14 Aug 2026.