Jim Simons Mesa Laboratories Inc Transaction History

Renaissance Technologies LLC

$70.6 Billion
Q3 2025

A detailed history of Jim Simons (Renaissance Technologies LLC) transactions in Mesa Laboratories Inc stock. As of the latest transaction made, Renaissance Technologies LLC holds 10,900 shares of MLAB stock, worth $805,946. This represents 0.0% of its overall portfolio holdings.

Number of Shares

10,900

Previous 68,027 83.98%

Holding current value

$805,946

Previous $6.41 Million 88.61%

% of portfolio

0.0%

Previous 0.01%

27 transactions

Quarter	Operation	Price Per share	shares change	shares Held
Q3 2025 Nov 13, 2025	SELL	$57.44 - $103.4 $3.28 Million - $5.91 Million	-57,127 Reduced 83.98%	10,900 $730,000
Q2 2025 Aug 13, 2025	BUY	$92.73 - $128.0 $5.55 Million - $7.66 Million	59,827 Added 729.6%	68,027 $6.41 Million
Q1 2025 May 14, 2025	BUY	$118.66 - $154.76 $83,062 - $108,332	700 Added 9.33%	8,200 $973,000
Q4 2024 Feb 13, 2025	SELL	$98.59 - $135.91 $581,681 - $801,869	-5,900 Reduced 44.03%	7,500 $989,000
Q3 2024 Nov 13, 2024	BUY	$87.73 - $140.86 $965,030 - $1.55 Million	11,000 Added 458.33%	13,400 $1.74 Million

Q2 2024 Aug 09, 2024	SELL	$84.94 - $122.22 $1.16 Million - $1.67 Million	-13,700 Reduced 85.09%	2,400 $208,000
Q1 2024 May 13, 2024	SELL	$90.62 - $114.1 $1.3 Million - $1.63 Million	-14,300 Reduced 47.04%	16,100 $1.77 Million
Q4 2023 Feb 13, 2024	BUY	$84.55 - $115.06 $1.83 Million - $2.49 Million	21,600 Added 245.45%	30,400 $3.19 Million
Q3 2023 Nov 14, 2023	SELL	$104.28 - $143.36 $1.48 Million - $2.04 Million	-14,200 Reduced 61.74%	8,800 $925,000
Q2 2023 Aug 11, 2023	BUY	$125.33 - $184.35 $1.67 Million - $2.45 Million	13,300 Added 137.11%	23,000 $2.96 Million
Q1 2023 May 12, 2023	SELL	$163.15 - $203.76 $1.34 Million - $1.68 Million	-8,234 Reduced 45.91%	9,700 $1.7 Million
Q4 2022 Feb 13, 2023	BUY	$118.55 - $188.84 $1.15 Million - $1.84 Million	9,734 Added 118.71%	17,934 $2.98 Million
Q3 2022 Nov 14, 2022	SELL	$139.58 - $214.98 $683,942 - $1.05 Million	-4,900 Reduced 37.4%	8,200 $1.16 Million
Q1 2022 May 13, 2022	SELL	$248.18 - $329.02 $690,436 - $915,333	-2,782 Reduced 17.52%	13,100 $3.34 Million
Q4 2021 Feb 11, 2022	SELL	$295.95 - $332.41 $3.32 Million - $3.73 Million	-11,218 Reduced 41.39%	15,882 $5.21 Million
Q3 2021 Nov 12, 2021	BUY	$266.92 - $322.44 $907,528 - $1.1 Million	3,400 Added 14.35%	27,100 $8.19 Million
Q2 2021 Aug 13, 2021	BUY	$235.0 - $272.85 $2.77 Million - $3.22 Million	11,800 Added 99.16%	23,700 $6.43 Million
Q1 2021 May 13, 2021	SELL	$243.02 - $297.01 $534,644 - $653,422	-2,200 Reduced 15.6%	11,900 $2.9 Million
Q4 2020 Feb 10, 2021	SELL	$258.4 - $289.99 $7.24 Million - $8.12 Million	-28,000 Reduced 66.51%	14,100 $4.04 Million
Q3 2020 Nov 13, 2020	SELL	$211.1 - $255.87 $1.48 Million - $1.79 Million	-7,000 Reduced 14.26%	42,100 $10.7 Million
Q2 2020 Aug 13, 2020	BUY	$208.55 - $264.25 $3.17 Million - $4.02 Million	15,200 Added 44.84%	49,100 $10.6 Million
Q1 2020 May 14, 2020	SELL	$190.69 - $270.25 $6.1 Million - $8.65 Million	-32,000 Reduced 48.56%	33,900 $7.66 Million
Q4 2019 Feb 13, 2020	SELL	$213.21 - $251.5 $3.11 Million - $3.67 Million	-14,600 Reduced 18.14%	65,900 $16.4 Million
Q3 2019 Nov 13, 2019	BUY	$206.69 - $258.29 $6.97 Million - $8.7 Million	33,700 Added 72.01%	80,500 $19.1 Million
Q2 2019 Aug 12, 2019	SELL	$185.45 - $260.0 $1.32 Million - $1.85 Million	-7,100 Reduced 13.17%	46,800 $11.4 Million
Q1 2019 May 14, 2019	SELL	$204.75 - $240.24 $1.72 Million - $2.02 Million	-8,400 Reduced 13.48%	53,900 $12.4 Million
Q4 2018 Feb 13, 2019	BUY	$171.0 - $221.34 $10.7 Million - $13.8 Million	62,300 New	62,300 $13 Million

Others Institutions Holding MLAB

# of Institutions

154

Shares Held

5.96M

Call Options Held

Put Options Held

View Full List

About MESA LABORATORIES INC

Ticker MLAB
Exchange NASDAQ
Sector Technology
Industry Scientific & Technical Instruments
Shares Outstandng 5,317,270
Market Cap $393M
Description
Mesa Laboratories, Inc. develops, manufactures, and sells life sciences tools and quality control products and services in the United States, Europe, the Asia Pacific, and internationally. The company's Sterilization and Disinfection Control segment manufactures and sells biological, cleaning, and chemical indicators that are used to assess the ...

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