Arrowstreet Capital’s Mesa Laboratories MLAB Stock Holding History

Arrowstreet Capital’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	–	Sell	-6,228	Closed	-$489K	–	2007
2025 Q4	$489K	Buy	+6,228	New	+$474K	﹤0.01%	1681

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

Select Equity Group New York $20.2B AUM 17.52% 1-Year Est. Return

Vanguard Capital Management Malvern, Pennsylvania $4.68T AUM

RIM

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

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

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

Royce & Associates New York $12.4B AUM 64.17% 1-Year Est. Return

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

Arrowstreet Capital's MLAB Position: Q1 2026 in Review

Arrowstreet Capital sold out of Mesa Laboratories (MLAB) in Q1 2026, closing a stake of 6,228 shares — an estimated $489K sold.

Arrowstreet Capital first reported a position in MLAB in Q4 2025 and held it in 1 quarter. The position peaked at $489K in Q4 2025. 161 funds tracked by Wall St. Rank hold MLAB as of Q1 2026.

Arrowstreet Capital reported no remaining Mesa Laboratories position as of Q1 2026 after selling out during the quarter.
Arrowstreet Capital sold 6,228 Mesa Laboratories shares in Q1 2026, an estimated $489K.
Arrowstreet Capital first reported a position in Mesa Laboratories in Q4 2025 and held it in 1 quarter.
Arrowstreet Capital's Mesa Laboratories position peaked at $489K in Q4 2025.
161 funds tracked by Wall St. Rank held Mesa Laboratories as of Q1 2026.

Based on Arrowstreet Capital's 13F filing for Q1 2026, filed 14 May 2026.