XLB Institutional Ownership Changes & 13F Activity

MATERIALS SELECT SECTOR SPDR (XLB) 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, and Matrix Private Capital Group.

Related XLB insights

Portfolio quarterNameTypeQuantityRemainingReported stock balance
Q3 2019Renaissance Technologies LLCBuy33,900119,100$6,932
Q2 2019Renaissance Technologies LLCBuy69,20085,200$4,984
Q1 2018Renaissance Technologies LLCSell-39,00016,000$911
Q4 2017Renaissance Technologies LLCBuy28,40055,000$3,329
Q1 2017Renaissance Technologies LLCSell-22,20026,600$1,394
Q4 2016Sequoia Financial AdvisorsBuy5,0405,040$250
Q3 2016Renaissance Technologies LLCBuy17,10048,800$2,330
Q3 2015Renaissance Technologies LLCBuy23,70031,700$1,265
Q1 2015Renaissance Technologies LLCBuy7008,000$390
Q2 2014Renaissance Technologies LLCSell-30,9007,300$362
Q1 2014Renaissance Technologies LLCBuy21,60038,200$1,806
Q4 2013Renaissance Technologies LLCSell-30016,600$767
Q3 2013Renaissance Technologies LLCBuy16,90016,900$710

Frequently asked questions about XLB activity

  • Which institutional owners are buying XLB?

    Institutional owners buying XLB 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 XLB activity?

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

  • Is institutional interest in XLB increasing?

    Institutional interest in XLB 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.