David Shaw’s Mesa Laboratories MLAB Stock Holding History

David Shaw’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	$8.14M	Buy	81,755 +27,197	+50%	+$2.74M	﹤0.01%	2004
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	–	4697
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	–	3905
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

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

David Shaw's MLAB Position: Q2 2026 in Review

David Shaw increased its Mesa Laboratories (MLAB) stake by 50% in Q2 2026, buying an estimated $2.74M and bringing the position to 81,755 shares worth $8.14M. The position accounts for ﹤0.01% of the portfolio, ranked #2004.

David Shaw first reported a position in MLAB in Q2 2018 and has held it in 11 quarters since. 157 funds tracked by Wall St. Rank hold MLAB as of Q2 2026.

David Shaw held 81,755 shares of Mesa Laboratories worth $8.14M as of Q2 2026.
David Shaw bought 27,197 Mesa Laboratories shares in Q2 2026, an estimated $2.74M.
Mesa Laboratories made up ﹤0.01% of David Shaw's portfolio in Q2 2026, its #2004 holding.
David Shaw first reported a position in Mesa Laboratories in Q2 2018 and has held it in 11 quarters since.
157 funds tracked by Wall St. Rank held Mesa Laboratories as of Q2 2026.

Based on D.E. Shaw & Co's 13F filing for Q2 2026, filed 14 Aug 2026.