Russell Investments Group
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Russell Investments Group’s Mesa Laboratories MLAB Stock Holding History

Russell Investments Group’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 		$12.1M Sell
121,845
-13,224
-10% -$1.33M 0.01% 955
2026
Q1 		$11.9M Buy
135,069
+18,732
+16% +$1.61M 0.01% 842
2025
Q4 		$9.13M Buy
116,337
+17,150
+17% +$1.3M 0.01% 970
2025
Q3 		$6.65M Buy
99,187
+19,711
+25% +$1.42M 0.01% 1137
2025
Q2 		$7.49M Sell
79,476
-7,580
-9% -$832K 0.01% 984
2025
Q1 		$10.3M Buy
87,056
+18,986
+28% +$2.59M 0.01% 810
2024
Q4 		$8.98M Sell
68,070
-6,492
-9% -$797K 0.01% 861
2024
Q3 		$9.68M Buy
74,562
+14,811
+25% +$1.74M 0.01% 851
2024
Q2 		$5.18M Buy
59,751
+12,460
+26% +$1.3M 0.01% 1129
2024
Q1 		$5.19M Buy
47,291
+11,287
+31% +$1.14M 0.01% 1148
2023
Q4 		$3.77M Sell
36,004
-2,480
-6% -$242K 0.01% 1273
2023
Q3 		$4.04M Sell
38,484
-2,845
-7% -$364K 0.01% 1184
2023
Q2 		$5.31M Buy
41,329
+753
+2% +$115K 0.01% 1064
2023
Q1 		$7.09M Buy
40,576
+626
+2% +$112K 0.01% 934
2022
Q4 		$6.64M Sell
39,950
-12,757
-24% -$2M 0.01% 956
2022
Q3 		$7.42M Buy
52,707
+898
+2% +$164K 0.02% 865
2022
Q2 		$10.6M Buy
51,809
+2,568
+5% +$562K 0.02% 756
2022
Q1 		$12.5M Sell
49,241
-2,699
-5% -$733K 0.02% 730
2021
Q4 		$17M Buy
51,940
+4,583
+10% +$1.44M 0.03% 664
2021
Q3 		$14.3M Sell
47,357
-633
-1% -$180K 0.02% 722
2021
Q2 		$13M Sell
47,990
-7,461
-13% -$1.89M 0.02% 799
2021
Q1 		$13.5M Sell
55,451
-1,321
-2% -$363K 0.02% 785
2020
Q4 		$16.3M Sell
56,772
-1,463
-3% -$403K 0.03% 599
2020
Q3 		$14.8M Buy
58,235
+5,264
+10% +$1.25M 0.03% 589
2020
Q2 		$11.5M Sell
52,971
-8,790
-14% -$2.03M 0.03% 674
2020
Q1 		$14M Buy
61,761
+10,451
+20% +$2.58M 0.04% 518
2019
Q4 		$12.8M Buy
51,310
+15,958
+45% +$3.74M 0.02% 742
2019
Q3 		$8.4M Buy
+35,352
New +$8.17M 0.02% 931

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

Russell Investments Group's MLAB Position: Q2 2026 in Review

Russell Investments Group reduced its Mesa Laboratories (MLAB) stake by 9.8% in Q2 2026, selling an estimated $1.33M and leaving 121,845 shares worth $12.1M. The position accounts for 0.01% of the portfolio, ranked #955.

Russell Investments Group first reported a position in MLAB in Q3 2019 and has held it in 28 quarters since. The position peaked at $17M in Q4 2021. 160 funds tracked by Wall St. Rank hold MLAB as of Q2 2026.

  • Russell Investments Group held 121,845 shares of Mesa Laboratories worth $12.1M as of Q2 2026.
  • Russell Investments Group sold 13,224 Mesa Laboratories shares in Q2 2026, an estimated $1.33M.
  • Mesa Laboratories made up 0.01% of Russell Investments Group's portfolio in Q2 2026, its #955 holding.
  • Russell Investments Group first reported a position in Mesa Laboratories in Q3 2019 and has held it in 28 quarters since.
  • Russell Investments Group's Mesa Laboratories position peaked at $17M in Q4 2021.
  • 160 funds tracked by Wall St. Rank held Mesa Laboratories as of Q2 2026.

Based on Russell Investments Group's 13F filing for Q2 2026, filed 6 Aug 2026.