MISTRAS GROUP INC (MG) Stock Institutional Trading Activity
MISTRAS GROUP INC (MG) position changes reported by tracked institutional filers across multiple SEC 13F reporting periods. Based on recent SEC 13F filings (Q4 2025), investors with some of the largest reported share count changes include Renaissance Technologies LLC, First Eagle U.S. Value, Olstein Capital Management, and Vulcan Value Partners. Explore insights into buying and selling patterns, position changes, and investment conviction levels to understand institutional trading behavior and market dynamics.
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- MISTRAS GROUP INC (MG) stock institutional ownership
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| Portfolio quarter | Name | Type | Quantity | Remaining | Reported stock balance |
|---|---|---|---|---|---|
| Q4 2018 | Renaissance Technologies LLC | Sell | -21,160 | 361,540 | $5,199 |
| Q3 2018 | Renaissance Technologies LLC | Buy | 225,400 | 382,700 | $8,293 |
| Q1 2018 | Renaissance Technologies LLC | Sell | -23,400 | 157,300 | $2,979 |
| Q4 2017 | Renaissance Technologies LLC | Sell | -57,500 | 180,700 | $4,241 |
| Q3 2017 | Renaissance Technologies LLC | Sell | -55,500 | 238,200 | $4,883 |
| Q2 2017 | Renaissance Technologies LLC | Sell | -16,800 | 293,700 | $6,453 |
| Q1 2017 | Renaissance Technologies LLC | Sell | -36,000 | 310,500 | $6,638 |
| Q4 2016 | Renaissance Technologies LLC | Buy | 85,700 | 346,500 | $8,898 |
| Q3 2016 | Renaissance Technologies LLC | Buy | 98,000 | 260,800 | $6,121 |
| Q2 2016 | Renaissance Technologies LLC | Sell | -35,300 | 162,800 | $3,886 |
| Q1 2016 | Renaissance Technologies LLC | Buy | 124,700 | 198,100 | $4,907 |
| Q4 2015 | Renaissance Technologies LLC | Buy | 20,300 | 73,400 | $1,401 |
| Q2 2015 | Renaissance Technologies LLC | Sell | -45,400 | 53,100 | $1,008 |
| Q1 2015 | Renaissance Technologies LLC | Sell | -33,114 | 98,500 | $1,897 |
| Q4 2014 | Renaissance Technologies LLC | Sell | -10,386 | 131,614 | $2,412 |
| Q3 2014 | Renaissance Technologies LLC | Buy | 111,800 | 142,000 | $2,897 |
| Q2 2014 | Renaissance Technologies LLC | Sell | -57,600 | 30,200 | $741 |
| Q1 2014 | Olstein Capital Management | Sell | -23,000 | 57,000 | $1,298 |
| Q1 2014 | Renaissance Technologies LLC | Sell | -51,200 | 87,800 | $1,999 |
| Q4 2013 | Renaissance Technologies LLC | Buy | 65,592 | 139,000 | $2,902 |
| Q3 2013 | Renaissance Technologies LLC | Buy | 73,408 | 73,408 | $1,248 |
| Q3 2013 | Olstein Capital Management | Buy | 21,000 | 80,000 | $1,360 |
| Q2 2013 | Olstein Capital Management | Buy | 59,000 | 59,000 | $1,037 |
| Q2 2013 | Vulcan Value Partners | Buy | 613,475 | 613,475 | $10,785 |
Frequently asked questions about MG activity
Which institutional owners are buying MG?
Institutional owners buying MG include investors who have either initiated new positions or increased their existing holdings based on recent SEC 13F filings. The activity table above highlights which funds added shares in the latest reporting periods and how their positions changed over time.
What does "buy" mean in MG activity?
"Buy" means an investor increased their reported position in MG compared to the prior reporting period. This reflects growing exposure to MISTRAS GROUP INC (MG) rather than necessarily a brand-new position (though new positions also appear as buys when prior quantity was zero).
Is institutional interest in MG increasing?
Institutional interest in MG can be assessed by comparing the number of tracked funds adding or increasing positions versus those trimming or exiting across the periods shown. A higher number of additions typically signals increasing participation among large filers, but it should be read alongside position sizes and the full table.