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Livermore
ZHEN

Tenaris SA

TS
Exchange
NYSE
Industry
Steel Works, Blast Furnaces & Rolling Mills (Coke Ovens)
SEC CIK
0001190723

No open-market purchases or sales by Tenaris SA insiders were filed in the last 90 days; 285 institutions reported holding it in 13F filings for Q2 2026, worth $2.13B in total; no superinvestor holds it.

Other share classesTNRSF

Q1 2026 vs. Q4 2025

How the institutions holding Tenaris SA changed between Q4 2025 and Q1 2026.

All holders in Q1 2026All holders in Q4 2025

13F holders of TS: Q4 2025 compared with Q1 2026
MeasureQ4 2025Of which not filed for Q1 2026Q1 2026Change
Holders2293264+38
Shares32.9M28.1K39.3M+6.43M (+19.5%)
Value$1.27B$1.08M$2.29B+$1.02B (+80.9%)

3 institutions that held it in Q4 2025 haven't filed for Q1 2026 yet. Not filing isn't selling, so the changes leave them out.

New holders (70)

Institutions that held Tenaris SA at the end of Q1 2026 but not at the end of Q4 2025.

Institutions new to TS in Q1 2026
InstitutionSharesValue% of portfolio
Driehaus Capital Management LLC888,346$51.7M0.38%
CWA Asset Management Group, LLC506,550$29.5M1.01%
Carrhae Capital LLP337,428$19.6M1.39%
Capital Wealth Planning, LLC240,514$14.0M0.08%
Connor, Clark & Lunn Investment Management Ltd.178,439$10.4M0.02%
National Bank of Canada145,855$8.48M0.01%
Jane Street Group, LLC100,838$5.87M0.01%
Leuthold Group, LLC83,994$4.89M0.52%
GTS Securities LLC62,686$3.65M0.13%
Campbell & CO Investment Adviser LLC41,043$2.39M0.14%
HRT Financial LP39,774$2.31M0.01%
Bridgewater Associates, LP28,630$1.67M0.01%
Vanguard Capital Management LLC26,589$1.55M0.00%
FORA Capital, LLC22,994$1.34M0.10%
Walleye Trading LLC22,182$1.29M0.03%
North of South Capital LLP18,087$1.05M0.09%
Sanctuary Advisors, LLC17,631$1.03M0.01%
Illumine Investment Management, LLC17,603$1.02M0.79%
Two Sigma Securities, LLC16,317$949.3K0.11%
IMC-Chicago, LLC15,003$872.9K0.01%
Arrowstreet Capital, Limited Partnership12,217$710.8K0.00%
ExodusPoint Capital Management, LP11,363$661.1K0.01%
Fox Run Management, L.L.C.11,153$638.0K0.11%
Gallo Partners, LP9,483$551.7K1.06%
Gsa Capital Partners LLP8,074$470.0K0.03%
Marshall Wace, LLP8,000$465.4K0.00%
Sivia Capital Partners, LLC7,859$457.2K0.09%
Centiva Capital, LP7,501$436.4K0.02%
SG Americas Securities, LLC7,002$407.0K0.00%
Merit Financial Group, LLC6,959$404.9K0.00%
Sanchez Gaunt Capital Management, LLC6,581$382.9K0.24%
BCJ Capital Management, LLC6,531$380.0K0.02%
Lester Murray Antman dba SimplyRich5,600$325.0K0.08%
Evolve Private Wealth, LLC4,920$286.2K0.02%
Allspring Global Investments Holdings, LLC4,818$280.2K0.00%
RSM US Wealth Management LLC4,600$267.6K0.00%
Cambridge Investment Research Advisors, Inc.4,318$251.0K0.00%
Stirlingshire Investments, Inc.4,040$235.0K0.21%
Advyzon Investment Management, LLC4,013$233.5K0.02%
Syon Capital LLC3,995$232.4K0.01%
Neuberger Berman Group LLC3,837$223.2K0.00%
Franklin Resources Inc3,778$219.8K0.00%
Raymond James Financial Inc3,730$217.0K0.00%
Fayez Sarofim & Co3,658$212.8K0.00%
PDS Planning, Inc3,593$209.0K0.01%
Larry Mathis Financial Planning, LLC3,573$207.9K0.19%
D'Orazio & Associates, Inc.3,499$203.6K0.03%
Advisory Services Network, LLC1,685$98.0K0.00%
Bayforest Capital Ltd589$34.3K0.04%
Ares Financial Consulting, LLC446$25.8K0.02%
Owl Creek Wealth Partners LLC432$25.1K0.01%
Whipplewood Advisors, LLC256$14.9K0.01%
First Command Advisory Services, Inc.241$14.0K0.00%
Colonial Trust Advisors100$5.82K0.00%
Kilter Group LLC69$4.01K0.00%
Twin Peaks Wealth Advisors, LLC64$3.72K0.00%
Harbour Investments, Inc.62$3.61K0.00%
Horizon Investments, LLC28$1.63K0.00%
Dogwood Wealth Management LLC28$1.63K0.00%
Silicon Valley Capital Partners18$1.05K0.00%
Burk Holdings LLC18$1.05K0.00%
GHP Investment Advisors, Inc.16$9310.00%
Investors Portfolio Services LLC14$8890.00%
Innovative Asset Advisors Group, LLC13$7560.00%
Arlington Trust Co LLC10$5820.00%
IFP Advisors, Inc7$4070.00%
Sofos Investments, Inc.6$3490.00%
Stone House Investment Management, LLC4$2330.00%
Triumph Capital Management3$1750.00%
Cassaday & Co Wealth Management LLC1$590.00%

Sold out (32)

Institutions that held Tenaris SA at the end of Q4 2025 and filed for Q1 2026 without it.

Institutions that sold out of TS in Q1 2026
InstitutionShares, Q4 2025Value, Q4 2025
D. E. Shaw & Co., Inc.471,555$18.1M
Jump Financial, LLC346,283$13.3M
Point72 Asset Management, L.P.266,087$10.2M
Balyasny Asset Management LLC228,960$8.80M
Corigliano Investment Advisers, LLC157,700$6.06M
LMR Partners LLP126,422$4.86M
Old Mission Capital LLC117,117$4.50M
Blackstone Group Inc.84,597$3.25M
Aquatic Capital Management LLC81,396$3.13M
Y-Intercept (Hong Kong) Ltd63,601$2.45M
Exencial Wealth Advisors, LLC35,192$1.35M
Capital Fund Management S.A.21,818$838.9K
Vestmark Advisory Solutions, Inc.21,541$828.3K
Bridgefront Capital, LLC21,106$811.5K
Commonwealth Equity Services, LLC11,469$441.0K
Engineers Gate Manager LP11,186$430.1K
DRW Securities, LLC7,946$305.5K
Jain Global LLC7,545$290.1K
West Family Investments, Inc.6,481$249.2K
Total Wealth Planning & Management, Inc.6,337$243.7K
Forum Financial Management, LP5,375$206.7K
Edmond de Rothschild Holding S.A.3,200$123.0K
Kestra Advisory Services, LLC1,738$66.8K
Quantbot Technologies LP421$16.2K
SageView Advisory Group, LLC256$9.84K
Atlas Capital Advisors LLC108$4.15K
Cape Investment Advisory, Inc.73$2.81K
Signature Equity Partners, LLC55$2.12K
Elyxium Wealth, LLC35$1.35K
Independence Bank of Kentucky16$615
St Germain D J Co Inc14$538
Cullen/Frost Bankers, Inc.5$192

Not filed for Q1 2026 yet (3)

Institutions that held Tenaris SA at the end of Q4 2025 and haven't filed a 13F for Q1 2026. Not filing isn't selling, so they aren't counted as sold out.

Institutions holding TS in Q4 2025 that haven't filed for Q1 2026
InstitutionShares, Q4 2025Value, Q4 2025
Vanguard Group Inc26,589$1.02M
Global Retirement Partners, LLC1,505$57.9K
CIBC Private Wealth Group, LLC6$231