Optiver Holding
MLAB icon

Optiver Holding’s Mesa Laboratories MLAB Stock Holding History

Optiver Holding’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 		$2.89K Sell
29
-3
-9% -$302 ﹤0.01% 2188
2026
Q1 		$2.83K Buy
+32
New +$2.76K ﹤0.01% 1696
2025
Q4 		– Sell
-38
Closed -$2.55K – 2782
2025
Q3 		$2.55K Buy
+38
New +$2.73K ﹤0.01% 2278

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

Optiver Holding's MLAB Position: Q2 2026 in Review

Optiver Holding reduced its Mesa Laboratories (MLAB) stake by 9.4% in Q2 2026, selling an estimated $302 and leaving 29 shares worth $2.89K. The position accounts for ﹤0.01% of the portfolio, ranked #2188.

Optiver Holding first reported a position in MLAB in Q3 2025 and has held it in 3 quarters since. 159 funds tracked by Wall St. Rank hold MLAB as of Q2 2026.

  • Optiver Holding held 29 shares of Mesa Laboratories worth $2.89K as of Q2 2026.
  • Optiver Holding sold 3 Mesa Laboratories shares in Q2 2026, an estimated $302.
  • Mesa Laboratories made up ﹤0.01% of Optiver Holding's portfolio in Q2 2026, its #2188 holding.
  • Optiver Holding first reported a position in Mesa Laboratories in Q3 2025 and has held it in 3 quarters since.
  • 159 funds tracked by Wall St. Rank held Mesa Laboratories as of Q2 2026.

Based on Optiver Holding's 13F filing for Q2 2026, filed 12 Aug 2026.