NORTHERN TRUST CORP (NTRS) Stock Institutional Trading Activity


NORTHERN TRUST CORP (NTRS) 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 Ariel Appreciation Fund, Mairs & Power Growth Fund, Sequoia Financial Advisors, Renaissance Technologies LLC, and Meritage Group. 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
Q1 2021Ariel Appreciation FundBuy51,7471,771,043$186,154
Q4 2020Renaissance Technologies LLCSell-47,10050,298$4,685
Q4 2020Ariel Appreciation FundSell-52,0061,719,296$160,135
Q3 2020Ariel Appreciation FundSell-37,8011,771,302$138,108
Q2 2020Ariel Appreciation FundSell-122,5961,809,103$143,534
Q1 2020Ariel Appreciation FundBuy149,1231,931,699$145,766
Q4 2019Ariel Appreciation FundSell-41,2551,782,576$189,381
Q3 2019Ariel Appreciation FundBuy24,5041,823,831$170,200
Q2 2019Renaissance Technologies LLCBuy72,30097,398$8,766
Q2 2019Ariel Appreciation FundBuy56,5361,799,327$161,939
Q1 2019Vulcan Value PartnersSell-6,433226$20
Q1 2019Renaissance Technologies LLCSell-362,40025,098$2,269
Q1 2019Ariel Appreciation FundBuy3051,742,791$157,566
Q4 2018Vulcan Value PartnersSell-2,648,9686,659$557
Q4 2018Renaissance Technologies LLCBuy186,500387,498$32,391
Q4 2018Ariel Appreciation FundSell-6,7031,742,486$145,654
Q3 2018Renaissance Technologies LLCBuy90,898200,998$20,528
Q3 2018Vulcan Value PartnersBuy133,4282,655,627$271,219
Q3 2018Ariel Appreciation FundSell-60,7761,749,189$178,645
Q2 2018Vulcan Value PartnersBuy911,1762,522,199$259,509
Q2 2018Ariel Appreciation FundSell-3591,809,965$186,227
Q1 2018Renaissance Technologies LLCBuy9,700110,100$11,355
Q1 2018Vulcan Value PartnersSell-44,0901,611,023$166,145
Q1 2018Ariel Appreciation FundSell-48,4071,810,324$186,699
Q4 2017Renaissance Technologies LLCBuy67,400100,400$10,029
Q4 2017Vulcan Value PartnersSell-568,8001,655,113$165,330
Q4 2017Gardner Russo & QuinnSell-2,3031,129$113
Q4 2017Ariel Appreciation FundSell-49,4441,858,731$185,669
Q3 2017Renaissance Technologies LLCSell-13,99833,000$3,034
Q3 2017Vulcan Value PartnersBuy478,8022,223,913$204,444

Frequently asked questions about NTRS activity

  • Which institutional owners are buying NTRS?

    Institutional owners buying NTRS 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 NTRS activity?

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

  • Is institutional interest in NTRS increasing?

    Institutional interest in NTRS 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.