State of Wisconsin Investment Board’s Mesa Laboratories MLAB Stock Holding History

State of Wisconsin Investment Board’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	$1.68M	Sell	19,006 -3,600	-16%	-$310K	﹤0.01%	1467
2025 Q4	$1.77M	Buy	22,606 +4,200	+23%	+$319K	﹤0.01%	1460
2025 Q3	$1.23M	Buy	+18,406	New	+$1.32M	﹤0.01%	1528
2024 Q4	–	Sell	-9,615	Closed	-$1.25M	–	2337
2024 Q3	$1.25M	Sell	9,615 -920	-9%	-$108K	﹤0.01%	1484
2024 Q2	$914K	Sell	10,535 -6,281	-37%	-$658K	﹤0.01%	1587
2024 Q1	$1.85M	Buy	16,816 +6,806	+68%	+$686K	﹤0.01%	1270
2023 Q4	$1.05M	Buy	+10,010	New	+$975K	﹤0.01%	1383
2023 Q3	–	Sell	-3,721	Closed	-$478K	–	2568
2023 Q2	$478K	Sell	3,721 -550	-13%	-$83.8K	﹤0.01%	1840
2023 Q1	$746K	Sell	4,271 -991	-19%	-$178K	﹤0.01%	1636
2022 Q4	$875K	Buy	5,262 +3,082	+141%	+$483K	﹤0.01%	1567
2022 Q3	$307K	Buy	2,180 +916	+72%	+$167K	﹤0.01%	2210
2022 Q2	$258K	Buy	+1,264	New	+$277K	﹤0.01%	2382

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

Select Equity Group New York $19.5B AUM 17.33% 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

State of Wisconsin Investment Board's MLAB Position: Q1 2026 in Review

State of Wisconsin Investment Board reduced its Mesa Laboratories (MLAB) stake by 16% in Q1 2026, selling an estimated $310K and leaving 19,006 shares worth $1.68M. The position accounts for ﹤0.01% of the portfolio, ranked #1467.

State of Wisconsin Investment Board first reported a position in MLAB in Q2 2022 and has held it in 12 quarters since. The position peaked at $1.85M in Q1 2024. 161 funds tracked by Wall St. Rank hold MLAB as of Q1 2026.

State of Wisconsin Investment Board held 19,006 shares of Mesa Laboratories worth $1.68M as of Q1 2026.
State of Wisconsin Investment Board sold 3,600 Mesa Laboratories shares in Q1 2026, an estimated $310K.
Mesa Laboratories made up ﹤0.01% of State of Wisconsin Investment Board's portfolio in Q1 2026, its #1467 holding.
State of Wisconsin Investment Board first reported a position in Mesa Laboratories in Q2 2022 and has held it in 12 quarters since.
State of Wisconsin Investment Board's Mesa Laboratories position peaked at $1.85M in Q1 2024.
161 funds tracked by Wall St. Rank held Mesa Laboratories as of Q1 2026.

Based on State of Wisconsin Investment Board's 13F filing for Q1 2026, filed 15 May 2026.