Renaissance Technologies (RenTech)'s MLAB Position Overview
Renaissance Technologies (RenTech) (via Renaissance Technologies LLC) currently holds 31,600 shares of Mesa Laboratories, Inc. (MLAB) worth $2.79 M, representing 0.00% of the portfolio. First purchased in 2013-Q2, this long-term strategic position has been held for 52 quarters.
Based on 13F filings since 2013, Renaissance Technologies (RenTech) has maintained a long-term strategic position in MLAB, representing a significant commitment to this investment thesis. Largest addition occurred in Q2 2025, adding 59,827 shares. Largest reduction occurred in Q3 2025, reducing 57,127 shares.
Analysis based on 13F filings available since 2013 Q2
Renaissance Technologies (RenTech)'s Mesa Laboratories (MLAB) Holding Value Over Time
Track share changes against reported price movement
Quarterly Mesa Laboratories (MLAB) Trades by Renaissance Technologies (RenTech)
| Report Date | Bought/Sold (Sh.) | % Change | Qtr. End Shares | Reported Price |
|---|---|---|---|---|
| Q1 2026 | +28,100 | Add 802.86% | 31,600 | $88.42 |
| Q4 2025 | -7,400 | Reduce 67.89% | 3,500 | $78.50 |
| Q3 2025 | -57,127 | Reduce 83.98% | 10,900 | $67.01 |
| Q2 2025 | +59,827 | Add 729.60% | 68,027 | $94.22 |
| Q1 2025 | +700 | Add 9.33% | 8,200 | $118.66 |
| Q4 2024 | -5,900 | Reduce 44.03% | 7,500 | $131.87 |
| Q3 2024 | +11,000 | Add 458.33% | 13,400 | $129.86 |
| Q2 2024 | -13,700 | Reduce 85.09% | 2,400 | $86.77 |
| Q1 2024 | -14,300 | Reduce 47.04% | 16,100 | $109.75 |
| Q4 2023 | +21,600 | Add 245.45% | 30,400 | $104.77 |
| Q3 2023 | -14,200 | Reduce 61.74% | 8,800 | $105.11 |
| Q2 2023 | +13,300 | Add 137.11% | 23,000 | $0.13 |
| Q1 2023 | -8,234 | Reduce 45.91% | 9,700 | $0.17 |
| Q4 2022 | +9,734 | Add 118.71% | 17,934 | $0.17 |
| Q3 2022 | -4,900 | Reduce 37.40% | 8,200 | $140.85 |
| Q1 2022 | -2,782 | Reduce 17.52% | 13,100 | $254.89 |
| Q4 2021 | -11,218 | Reduce 41.39% | 15,882 | $328.11 |
| Q3 2021 | +3,400 | Add 14.35% | 27,100 | $302.36 |
| Q2 2021 | +11,800 | Add 99.16% | 23,700 | $271.18 |
| Q1 2021 | -2,200 | Reduce 15.60% | 11,900 | $243.53 |
| Q4 2020 | -28,000 | Reduce 66.51% | 14,100 | $286.67 |
| Q3 2020 | -7,000 | Reduce 14.26% | 42,100 | $254.75 |
| Q2 2020 | +15,200 | Add 44.84% | 49,100 | $216.80 |
| Q1 2020 | -32,000 | Reduce 48.56% | 33,900 | $226.08 |
| Q4 2019 | -14,600 | Reduce 18.14% | 65,900 | $249.39 |
| Q3 2019 | +33,700 | Add 72.01% | 80,500 | $237.76 |
| Q2 2019 | -7,100 | Reduce 13.17% | 46,800 | $244.34 |
| Q1 2019 | -8,400 | Reduce 13.48% | 53,900 | $230.50 |
| Q4 2018 | -400 | Reduce 0.64% | 62,300 | $208.39 |
| Q3 2018 | +200 | Add 0.32% | 62,700 | $185.61 |
| Q2 2018 | -11,500 | Reduce 15.54% | 62,500 | $211.09 |
| Q1 2018 | -4,600 | Reduce 5.85% | 74,000 | $148.45 |
| Q4 2017 | -5,600 | Reduce 6.65% | 78,600 | $124.30 |
| Q3 2017 | -3,071 | Reduce 3.52% | 84,200 | $149.32 |
| Q2 2017 | +7,771 | Add 9.77% | 87,271 | $143.31 |
| Q1 2017 | -3,800 | Reduce 4.56% | 79,500 | $122.70 |
| Q4 2016 | -10,859 | Reduce 11.53% | 83,300 | $122.75 |
| Q3 2016 | -7,441 | Reduce 7.32% | 94,159 | $114.36 |
| Q2 2016 | -34,800 | Reduce 25.51% | 101,600 | $123.00 |
| Q1 2016 | -2,199 | Reduce 1.59% | 136,400 | $96.35 |
| Q4 2015 | +4,199 | Add 3.12% | 138,599 | $99.50 |
| Q3 2015 | +207 | Add 0.15% | 134,400 | $111.40 |
| Q2 2015 | -5,907 | Reduce 4.22% | 134,193 | $88.90 |
| Q1 2015 | -7,124 | Reduce 4.84% | 140,100 | $72.20 |
| Q4 2014 | -20,576 | Reduce 12.26% | 147,224 | $77.31 |
| Q3 2014 | +7,200 | Add 4.48% | 167,800 | $57.78 |
| Q2 2014 | +26,457 | Add 19.72% | 160,600 | $83.96 |
| Q1 2014 | +7,955 | Add 6.30% | 134,143 | $90.25 |
| Q4 2013 | +14,988 | Add 13.48% | 126,188 | $78.58 |
| Q3 2013 | +22,000 | Add 24.66% | 111,200 | $67.61 |
| Q2 2013 | +89,200 | Add 0.00% | 89,200 | $54.13 |
Renaissance Technologies (RenTech)'s Mesa Laboratories Investment FAQs
Renaissance Technologies (RenTech) first purchased Mesa Laboratories, Inc. (MLAB) in Q2 2013, acquiring 89,200 shares, as reported in their 13F filing for that period. Note: Analysis reflects filings available since Q2 2013; earlier records may be incomplete.
Renaissance Technologies (RenTech) has held Mesa Laboratories, Inc. (MLAB) for 52 quarters since Q2 2013.
Renaissance Technologies (RenTech)'s largest addition to Mesa Laboratories, Inc. (MLAB) was in Q2 2013, adding 89,200 shares worth $4.83 M.
According to the latest 13F filing for Q1 2026, Renaissance Technologies (RenTech)'s firm, Renaissance Technologies LLC, owns 31,600 shares of Mesa Laboratories, Inc. (MLAB), valued at approximately $2.79 M.
As of the Q1 2026 filing, Mesa Laboratories, Inc. (MLAB) represents approximately 0.00% of Renaissance Technologies (RenTech)'s publicly disclosed stock portfolio, making it one of their key holdings.
Renaissance Technologies (RenTech)'s peak holding in Mesa Laboratories, Inc. (MLAB) was 167,800 shares, as reported at the end of Q3 2014.