ILLINOIS TOOL WORKS (ITW) Institutional Ownership Changes & 13F Activity

ILLINOIS TOOL WORKS (ITW) institutional ownership data tracks hedge funds, asset managers, and other institutional investors based on recent SEC 13F filings (Q1 2026). This page analyzes institutional buying and selling activity, new holdings, and sold-out positions among tracked filers. Notable filers include Renaissance Technologies LLC, Sequoia Financial Advisors, Mairs & Power Growth Fund, Cullen Value Fund, and Ariel Appreciation Fund.

Portfolio quarterNameTypeQuantityRemainingReported stock balance
Q4 2016Ariel Appreciation FundSell-46,403754,329$92,375
Q3 2016Ariel Appreciation FundSell-105,474800,732$95,960
Q3 2016Mairs & Power Growth FundSell-1,4772,199$264
Q2 2016Tweedy, Browne Co All Funds (US)Sell-125,599226,655$23,608
Q2 2016Ariel Appreciation FundSell-5,845906,206$94,390
Q1 2016Renaissance Technologies LLCBuy307,700537,000$55,010
Q1 2016Ariel Appreciation FundSell-50,132912,051$93,431
Q4 2015Ariel Appreciation FundBuy5,595962,183$89,175
Q4 2015Tweedy, Browne Co All Funds (US)Sell-473352,254$32,647
Q3 2015Renaissance Technologies LLCSell-262,700229,300$18,874
Q3 2015Ariel Appreciation FundBuy33,615956,588$78,737
Q2 2015Renaissance Technologies LLCSell-257,643492,000$45,161
Q2 2015Ariel Appreciation FundSell-2,150922,973$84,720
Q1 2015Ariel Appreciation FundBuy15,767925,123$89,866
Q4 2014Ariel Appreciation FundSell-7,857909,356$86,116
Q4 2014Tweedy, Browne Co All Funds (US)Sell-526352,727$33,403
Q3 2014Ariel Appreciation FundBuy5,578917,213$77,431
Q2 2014Ariel Appreciation FundSell-216,536911,635$79,823
Q1 2014Renaissance Technologies LLCBuy317,043749,643$60,968
Q1 2014Ariel Appreciation FundSell-81,4741,128,171$91,754
Q1 2014Mairs & Power Growth FundBuy203,676$299
Q4 2013Ariel Appreciation FundBuy22,5651,209,645$101,707
Q4 2013Mairs & Power Growth FundBuy1993,656$307
Q3 2013Ariel Appreciation FundBuy143,4131,187,080$90,539
Q3 2013Mairs & Power Growth FundBuy993,457$264
Q2 2013Ariel Appreciation FundBuy1,043,6671,043,667$72,190
Q2 2013Renaissance Technologies LLCBuy432,600432,600$29,923
Q2 2013Tweedy, Browne Co All Funds (US)Buy353,253353,253$24,435
Q2 2013Mairs & Power Growth FundBuy3,3583,358$232

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.

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