ILLINOIS TOOL WORKS (ITW) Stock Institutional Trading Activity


ILLINOIS TOOL WORKS (ITW) 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, Mairs & Power Growth Fund, Cullen Value Fund, Sequoia Financial Advisors, and Ariel Appreciation Fund. 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
Q4 2019Ariel Appreciation FundSell-39,542236,721$42,522
Q3 2019Sequoia Financial AdvisorsBuy763,306$517
Q3 2019Mairs & Power Growth FundSell-2502,649$415
Q3 2019Ariel Appreciation FundSell-83,349276,263$43,232
Q2 2019Sequoia Financial AdvisorsSell-283,230$487
Q2 2019Ariel Appreciation FundSell-3,296359,612$54,233
Q1 2019Sequoia Financial AdvisorsBuy1,7773,258$468
Q1 2019Ariel Appreciation FundSell-853362,908$52,088
Q4 2018Mairs & Power Growth FundSell-1012,899$367
Q4 2018Ariel Appreciation FundSell-61,453363,761$46,085
Q3 2018Sequoia Financial AdvisorsBuy1561,481$209
Q3 2018Renaissance Technologies LLCBuy141,700678,700$95,778
Q3 2018Mairs & Power Growth FundSell-4503,000$423
Q3 2018Ariel Appreciation FundSell-1,386425,214$60,006
Q2 2018Mairs & Power Growth FundSell-1993,450$478
Q2 2018Ariel Appreciation FundSell-6,842426,600$59,101
Q1 2018Sequoia Financial AdvisorsSell-61,325$208
Q1 2018Mairs & Power Growth FundSell-5773,649$572
Q1 2018Ariel Appreciation FundSell-4,901433,442$67,903
Q4 2017Sequoia Financial AdvisorsBuy1,3311,331$222
Q4 2017Ariel Appreciation FundSell-43,411438,343$73,138
Q3 2017Mairs & Power Growth FundBuy1,0004,226$625
Q3 2017Ariel Appreciation FundSell-1,597481,754$71,280
Q2 2017Ariel Appreciation FundSell-190,007483,351$69,240
Q1 2017Mairs & Power Growth FundBuy1,0273,226$427
Q1 2017Ariel Appreciation FundSell-80,971673,358$89,200
Q4 2016Ariel Appreciation FundSell-46,403754,329$92,375
Q3 2016Mairs & Power Growth FundSell-1,4772,199$264
Q3 2016Ariel Appreciation FundSell-105,474800,732$95,960
Q2 2016Tweedy, Browne Co All Funds (US)Sell-125,599226,655$23,608

Frequently asked questions about ITW activity

  • Which institutional owners are buying ITW?

    Institutional owners buying ITW 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 ITW activity?

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

  • Is institutional interest in ITW increasing?

    Institutional interest in ITW 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.