D.E. Shaw & Co

D.E. Shaw & Co’s Mesa Laboratories MLAB Stock Holding History

D.E. Shaw & Co’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	$4.82M	Sell	54,558 -22,007	-29%	-$1.9M	﹤0.01%	2206
2025 Q4	$6.01M	Buy	76,565 +43,754	+133%	+$3.33M	﹤0.01%	2156
2025 Q3	$2.2M	Buy	32,811 +24,146	+279%	+$1.74M	﹤0.01%	2903
2025 Q2	$816K	Buy	+8,665	New	+$951K	﹤0.01%	3371
2024 Q2	–	Sell	-3,979	Closed	-$437K	–	4732
2024 Q1	$437K	Sell	3,979 -1,943	-33%	-$196K	﹤0.01%	3552
2023 Q4	$620K	Buy	5,922 +1,716	+41%	+$167K	﹤0.01%	3411
2023 Q3	$442K	Buy	4,206 +1,592	+61%	+$204K	﹤0.01%	3477
2023 Q2	$336K	Buy	+2,614	New	+$398K	﹤0.01%	3566
2018 Q4	–	Sell	-1,634	Closed	-$303K	–	3941
2018 Q3	$303K	Buy	1,634 +584	+56%	+$118K	﹤0.01%	3358
2018 Q2	$222K	Buy	+1,050	New	+$184K	﹤0.01%	3513

Other funds holding MLAB

Long Path Partners Stamford, Connecticut $220M AUM 25.96% 1-Year Est. Return

BlackRock New York $5.7T AUM 30.48% 1-Year Est. Return

Boston Partners

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

Select Equity Group

Select Equity Group New York $18.8B AUM 17.33% 1-Year Est. Return

Vanguard Capital Management Malvern, Pennsylvania $4.04T AUM

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

AQR Capital Management

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

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