TENARIS SA-ADR (TS) Institutional Ownership Changes & 13F Activity

TENARIS SA-ADR (TS). Institutional ownership data tracks hedge funds, asset managers, and other institutional investors based on recent SEC Form 13F filings (Q1 2026). This page analyzes institutional buying and selling activity, new holdings, and sold-out positions in the latest reporting period. Notable filers include Fmr Llc, Driehaus Capital Management Llc, Van Eck Associates Corp, Citadel Advisors Llc, and Wellington Management Group Llp.

InstitutionTypeChange in sharesChange Position %SharesReported stock balancePortfolio quarterFiling date
Neuberger Berman Group LlcBuy+3,837—3,837$223.21KQ1 2026Oct 27, 2026
Wells Fargo & Company/MnBuy+35,663+408.8%44,387$2.58MQ1 2026Jul 08, 2026
Western Wealth Management, LlcBuy+30—30$1.73KQ1 2026May 19, 2026
Silicon Valley Capital PartnersBuy+18—18$1.05KQ1 2026May 19, 2026
Bank Of America CorpSell-178,781-53.0%158,437$9.22MQ1 2026May 18, 2026
Strategic Investment Advisors / MiSell-987-10.4%8,518$495.60KQ1 2026May 18, 2026
Fmr LlcBuy+6,053,126+275.3%8,251,759$480.09MQ1 2026May 15, 2026
Driehaus Capital Management LlcBuy+888,346—888,346$51.68MQ1 2026May 15, 2026
Van Eck Associates CorpBuy+873,847+43.3%2,893,032$168.32MQ1 2026May 15, 2026
Citadel Advisors LlcSell-639,973-68.6%292,423$17.01MQ1 2026May 15, 2026
Wellington Management Group LlpSell-277,103-10.3%2,405,034$139.92MQ1 2026May 15, 2026
Capital Wealth Planning, LlcBuy+240,514—240,514$13.99MQ1 2026May 15, 2026
Price T Rowe Associates IncSell-204,514-12.4%1,445,210$84.08MQ1 2026May 15, 2026
National Bank Of CanadaBuy+145,855—145,855$8.48MQ1 2026May 15, 2026
Tower Research Capital Llc (Trc)Sell-99,906-100.0%27$1.57KQ1 2026May 15, 2026
Goldman Sachs Group IncSell-98,682-12.0%720,894$41.94MQ1 2026May 15, 2026
Xtx Topco LtdSell-87,507-85.9%14,337$834.13KQ1 2026May 15, 2026
Millennium Management LlcSell-87,483-56.0%68,723$4.00MQ1 2026May 15, 2026
Fearnley Asset Management AsBuy+64,700+134.8%112,700$6.56MQ1 2026May 15, 2026
Gts Securities LlcBuy+62,686—62,686$3.65MQ1 2026May 15, 2026
Royal Bank Of CanadaSell-59,162-85.9%9,695$564.00KQ1 2026May 15, 2026
Campbell & Co Investment Adviser LlcBuy+41,043—41,043$2.39MQ1 2026May 15, 2026
Aqr Capital Management LlcBuy+34,570+31.2%145,427$8.46MQ1 2026May 15, 2026
Bridgewater Associates, LpBuy+28,630—28,630$1.67MQ1 2026May 15, 2026
Aventail Capital Group, LpBuy+26,204+42.8%87,367$5.08MQ1 2026May 15, 2026
Vident Advisory, LlcBuy+25,791+149.5%43,041$2.50MQ1 2026May 15, 2026
Quantinno Capital Management LpBuy+25,271+20.9%146,347$8.51MQ1 2026May 15, 2026
Fora Capital, LlcBuy+22,994—22,994$1.34MQ1 2026May 15, 2026
Harding Loevner LpSell-18,424-5.9%292,858$17.04MQ1 2026May 15, 2026
Two Sigma Securities, LlcBuy+16,317—16,317$949.32KQ1 2026May 15, 2026
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Frequently asked questions about TS activity

  • Which institutional owners are buying TS?

    Institutional owners buying TS 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 TS activity?

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

  • Is institutional interest in TS increasing?

    Institutional interest in TS 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.