(PRO) Stock Institutional Trading Activity


(PRO) position changes reported by tracked institutional filers across multiple SEC 13F reporting periods. Based on recent SEC 13F filings (Q3 2025), investors with some of the largest reported share count changes include Disciplined Growth Investors, Renaissance Technologies LLC, and Sequoia Financial Advisors. 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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Portfolio quarterNameTypeQuantityRemainingReported stock balance
Q3 2021Renaissance Technologies LLCSell-16,91122,100$784
Q2 2021Disciplined Growth InvestorsBuy11,485149,183$6,798
Q1 2021Disciplined Growth InvestorsSell-19,649137,698$5,852
Q4 2020Renaissance Technologies LLCSell-415,88939,011$1,981
Q4 2020Disciplined Growth InvestorsSell-9,600157,347$7,989
Q3 2020Renaissance Technologies LLCSell-309,100454,900$14,530
Q3 2020Disciplined Growth InvestorsSell-1,278166,947$5,332
Q2 2020Renaissance Technologies LLCSell-336,900764,000$33,945
Q2 2020Disciplined Growth InvestorsSell-3,970168,225$7,474
Q1 2020Renaissance Technologies LLCSell-21,2001,100,900$34,161
Q1 2020Disciplined Growth InvestorsSell-17,675172,195$5,343
Q4 2019Renaissance Technologies LLCSell-272,1001,122,100$67,236
Q4 2019Disciplined Growth InvestorsSell-1,800189,870$11,377
Q3 2019Renaissance Technologies LLCBuy397,2001,394,200$83,094
Q3 2019Disciplined Growth InvestorsSell-10,281191,670$11,424
Q2 2019Renaissance Technologies LLCBuy691,300997,000$63,070
Q2 2019Disciplined Growth InvestorsSell-98,939201,951$12,775
Q1 2019Renaissance Technologies LLCBuy188,767305,700$12,913
Q1 2019Disciplined Growth InvestorsBuy4,209300,890$12,710
Q4 2018Renaissance Technologies LLCSell-14,567116,933$3,672
Q4 2018Disciplined Growth InvestorsSell-5,022296,681$9,316
Q3 2018Renaissance Technologies LLCBuy51,000131,500$4,605
Q3 2018Disciplined Growth InvestorsSell-3,118301,703$10,566
Q2 2018Disciplined Growth InvestorsSell-348304,821$11,147
Q1 2018Disciplined Growth InvestorsSell-987305,169$10,074
Q4 2017Disciplined Growth InvestorsSell-994306,156$8,098
Q3 2017Renaissance Technologies LLCSell-320,70080,500$1,942
Q3 2017Disciplined Growth InvestorsSell-17,750307,150$7,412
Q2 2017Renaissance Technologies LLCBuy171,500401,200$10,989
Q2 2017Disciplined Growth InvestorsSell-25324,900$8,899

Frequently asked questions about PRO activity

  • Which institutional owners are buying PRO?

    Institutional owners buying PRO 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 PRO activity?

    "Buy" means an investor increased their reported position in PRO compared to the prior reporting period. This reflects growing exposure to PRO rather than necessarily a brand-new position (though new positions also appear as buys when prior quantity was zero).

  • Is institutional interest in PRO increasing?

    Institutional interest in PRO 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.