Wellington Management Group
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Wellington Management Group’s Mesa Laboratories MLAB Stock Holding History

Wellington Management 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
2025
Q3 		– Sell
-22,471
Closed -$2.12M – 2055
2025
Q2 		$2.12M Buy
+22,471
New +$2.47M ﹤0.01% 1569
2025
Q1 		– Sell
-14,314
Closed -$1.89M – 2009
2024
Q4 		$1.89M Buy
+14,314
New +$1.76M ﹤0.01% 1581
2023
Q2 		– Sell
-2,435
Closed -$425K – 1932
2023
Q1 		$425K Sell
2,435
-1,729
-42% -$310K ﹤0.01% 1861
2022
Q4 		$692K Buy
+4,164
New +$652K ﹤0.01% 1741
2020
Q2 		– Sell
-24,941
Closed -$5.64M – 1930
2020
Q1 		$5.64M Sell
24,941
-394
-2% -$97.2K ﹤0.01% 1168
2019
Q4 		$6.32M Sell
25,335
-222
-0.9% -$52K ﹤0.01% 1280
2019
Q3 		$6.08M Sell
25,557
-2,508
-9% -$580K ﹤0.01% 1292
2019
Q2 		$6.86M Buy
28,065
+1,305
+5% +$304K ﹤0.01% 1307
2019
Q1 		$6.17M Buy
26,760
+1,391
+5% +$314K ﹤0.01% 1332
2018
Q4 		$5.29M Sell
25,369
-4,037
-14% -$787K ﹤0.01% 1365
2018
Q3 		$5.46M Buy
29,406
+4,934
+20% +$993K ﹤0.01% 1454
2018
Q2 		$5.17M Buy
24,472
+18,847
+335% +$3.3M ﹤0.01% 1477
2018
Q1 		$836K Buy
+5,625
New +$767K ﹤0.01% 1928

Other funds holding MLAB

CCA
Conestoga Capital Advisors Wayne, Pennsylvania $5.01B AUM 6.26% 1-Year Est. Return
BlackRock
BlackRock New York $5.72T AUM 30.48% 1-Year Est. Return
Vanguard Group
Vanguard Group Malvern, Pennsylvania $6.9T AUM 27.45% 1-Year Est. Return
Morgan Stanley
Morgan Stanley New York $1.66T AUM 25.57% 1-Year Est. Return
RIM
Ranger Investment Management Dallas, Texas $1.38B AUM 24.55% 1-Year Est. Return
GCM
Geneva Capital Management Milwaukee, Wisconsin $4.71B AUM 6.32% 1-Year Est. Return
SCM
Simcoe Capital Management New York $576M AUM 36.22% 1-Year Est. Return
RA
Royce & Associates New York $10.1B AUM 42.88% 1-Year Est. Return
Janus Henderson Group
Janus Henderson Group London, United Kingdom $209B AUM 37.72% 1-Year Est. Return
KLP
Kent Lake PR Anasco, Puerto Rico $198M AUM 5.21% 1-Year Est. Return

Wellington Management Group's MLAB Position: Q3 2025 in Review

Wellington Management Group sold out of Mesa Laboratories (MLAB) in Q3 2025, closing a stake of 22,471 shares — an estimated $2.12M sold.

Wellington Management Group first reported a position in MLAB in Q1 2018 and held it in 13 quarters. The position peaked at $6.86M in Q2 2019. 141 funds tracked by Wall St. Rank hold MLAB as of Q3 2025.

  • Wellington Management Group reported no remaining Mesa Laboratories position as of Q3 2025 after selling out during the quarter.
  • Wellington Management Group sold 22,471 Mesa Laboratories shares in Q3 2025, an estimated $2.12M.
  • Wellington Management Group first reported a position in Mesa Laboratories in Q1 2018 and held it in 13 quarters.
  • Wellington Management Group's Mesa Laboratories position peaked at $6.86M in Q2 2019.
  • 141 funds tracked by Wall St. Rank held Mesa Laboratories as of Q3 2025.

Based on Wellington Management Group's 13F filing for Q3 2025, filed 14 Nov 2025.