XT
MLAB icon

XTX Topco’s Mesa Laboratories MLAB Stock Holding History

XTX Topco’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 		$1.74M Buy
17,475
+11,274
+182% +$1.13M 0.02% 1254
2026
Q1 		$548K Sell
6,201
-6,400
-51% -$551K 0.01% 1970
2025
Q4 		$989K Buy
+12,601
New +$958K 0.03% 1033
2025
Q1 		– Sell
-3,382
Closed -$446K – 2813
2024
Q4 		$446K Buy
3,382
+398
+13% +$48.9K 0.04% 864
2024
Q3 		$388K Buy
+2,984
New +$351K 0.03% 1014

Other funds holding MLAB

LPP
Long Path Partners Stamford, Connecticut $235M AUM 22.51% 1-Year Est. Return
BlackRock
BlackRock New York $6.73T AUM 46.02% 1-Year Est. Return
Boston Partners
Boston Partners Boston, Massachusetts $113B AUM 38.87% 1-Year Est. Return
Vanguard Capital Management
Vanguard Capital Management Malvern, Pennsylvania $4.68T AUM
AQR Capital Management
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
Morgan Stanley New York $1.89T AUM 35.08% 1-Year Est. Return
Diamond Hill Capital Management
Diamond Hill Capital Management Columbus, Ohio $12.5B AUM 7.49% 1-Year Est. Return
Raymond James Financial
Raymond James Financial St Petersburg, Florida $369B AUM 28.27% 1-Year Est. Return
Dimensional Fund Advisors
Dimensional Fund Advisors Austin, Texas $552B AUM 44.19% 1-Year Est. Return

XTX Topco's MLAB Position: Q2 2026 in Review

XTX Topco increased its Mesa Laboratories (MLAB) stake by 182% in Q2 2026, buying an estimated $1.13M and bringing the position to 17,475 shares worth $1.74M. The position accounts for 0.02% of the portfolio, ranked #1254.

XTX Topco first reported a position in MLAB in Q3 2024 and has held it in 5 quarters since. 159 funds tracked by Wall St. Rank hold MLAB as of Q2 2026.

  • XTX Topco held 17,475 shares of Mesa Laboratories worth $1.74M as of Q2 2026.
  • XTX Topco bought 11,274 Mesa Laboratories shares in Q2 2026, an estimated $1.13M.
  • Mesa Laboratories made up 0.02% of XTX Topco's portfolio in Q2 2026, its #1254 holding.
  • XTX Topco first reported a position in Mesa Laboratories in Q3 2024 and has held it in 5 quarters since.
  • 159 funds tracked by Wall St. Rank held Mesa Laboratories as of Q2 2026.

Based on XTX Topco's 13F filing for Q2 2026, filed 14 Aug 2026.