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
13F holders, Q3 2025
Institutional positions in Tenaris SA as of Sep 30, 2025. Investment managers with $100 million or more in US stocks report their long positions on Form 13F within 45 days after each quarter ends. How 13F works
- Institutional holders
- 223
- +3 vs. Q2 2025
- Shares held
- 35.7M
- −10.2M (−22.2%) vs. Q2 2025
- Total value
- $1.28B
- −$431.2M (−25.2%) vs. Q2 2025
- New holders
- 37
- 82 more added
- Sold out
- 34
- 65 more reduced
3 institutions that held it in Q2 2025 haven't filed for Q3 2025 yet. Not filing isn't selling, so they aren't counted as sold out or in the changes above.
Compare with Q2 2025: new holders, sold out and not filed yet
Holders and value by quarter
Institutions reporting TS on Form 13F each quarter since Q1 2021, and the total value they reported. Values are as of each quarter end, so they also move with the share price.
| Quarter | Holders | Value |
|---|---|---|
| Q2 2026 | 285 | $2.13B |
| Q1 2026 | 264 | $2.29B |
| Q4 2025 | 229 | $1.27B |
| Q3 2025 | 223 | $1.28B |
| Q2 2025 | 223 | $1.71B |
| Q1 2025 | 227 | $2.01B |
| Q4 2024 | 234 | $1.90B |
| Q3 2024 | 201 | $1.60B |
| Q2 2024 | 224 | $1.70B |
| Q1 2024 | 236 | $2.19B |
| Q4 2023 | 222 | $2.16B |
| Q3 2023 | 216 | $1.94B |
| Q2 2023 | 201 | $1.93B |
| Q1 2023 | 227 | $1.74B |
| Q4 2022 | 218 | $2.07B |
| Q3 2022 | 179 | $1.66B |
| Q2 2022 | 182 | $1.61B |
| Q1 2022 | 182 | $2.08B |
| Q4 2021 | 144 | $1.04B |
| Q3 2021 | 130 | $1.03B |
| Q2 2021 | 143 | $1.19B |
| Q1 2021 | 127 | $1.32B |
Institutions, Q3 2025
Shares, value and share of portfolio for each institution holding Tenaris SA; share changes are against Q2 2025.
| Institution | Shares | Value | % of portfolio | Change in shares | Action |
|---|---|---|---|---|---|
| Westwood Global Investments, LLC | 7,591,660 | $271.6M | 6.78% | −239,707−3.1% | Reduced |
| Renaissance Technologies LLC | 3,350,644 | $119.9M | 0.16% | +459,100+15.9% | Added |
| FMR LLC | 2,295,249 | $82.1M | 0.00% | −3,219−0.1% | Reduced |
| Wellington Management Group LLP | 2,135,993 | $76.4M | 0.01% | +36,718+1.7% | Added |
| Price T Rowe Associates Inc | 1,787,345 | $63.9M | 0.01% | +89,348+5.3% | Added |
| Van Eck Associates Corp | 1,610,593 | $57.6M | 0.05% | −5,101−0.3% | Reduced |
| Encompass Capital Advisors LLC | 1,432,704 | $51.2M | 2.31% | −300,077−17.3% | Reduced |
| Morgan Stanley | 1,171,617 | $41.9M | 0.00% | +52,861+4.7% | Added |
| Dimensional Fund Advisors LP | 1,134,260 | $40.6M | 0.01% | +192,794+20.5% | Added |
| Optiver Holding B.V. | 905,328 | $32.4M | 0.53% | +589,625+186.8% | Added |
| Abc Arbitrage SA | 775,204 | $27.7M | 2.73% | +307,936+65.9% | Added |
| Goldman Sachs Group Inc | 705,183 | $25.2M | 0.00% | −225,048−24.2% | Reduced |
| BlackRock, Inc. | 641,138 | $22.9M | 0.00% | +14,039+2.2% | Added |
| Massachusetts Financial Services Co | 602,886 | $21.6M | 0.01% | −134,874−18.3% | Reduced |
| D. E. Shaw & Co., Inc. | 597,082 | $21.4M | 0.02% | +375,071+168.9% | Added |
| Millennium Management LLC | 574,423 | $20.5M | 0.02% | −202,540−26.1% | Reduced |
| Medina Singh Partners, LLC | 560,954 | $20.1M | 4.69% | +4,902+0.9% | Added |
| Assetmark, Inc | 480,215 | $17.2M | 0.04% | +10,986+2.3% | Added |
| Harding Loevner LP | 408,147 | $14.6M | 0.11% | −42,446−9.4% | Reduced |
| Jane Street Group, LLC | 378,260 | $13.5M | 0.02% | +83,005+28.1% | Added |
| Royal Bank of Canada | 328,799 | $11.8M | 0.00% | +28,418+9.5% | Added |
| Jump Financial, LLC | 319,947 | $11.4M | 0.15% | +69,147+27.6% | Added |
| Kiltearn Partners LLP | 298,459 | $10.7M | 2.14% | −21,100−6.6% | Reduced |
| SIR Capital Management, L.P. | 290,097 | $10.4M | 0.93% | −398,838−57.9% | Reduced |
| Grantham, Mayo, Van Otterloo & Co. LLC | 270,880 | $9.69M | 0.03% | +17,013+6.7% | Added |
| UBS Group AG | 269,522 | $9.64M | 0.00% | −1,315,354−83.0% | Reduced |
| Trexquant Investment LP | 250,866 | $8.97M | 0.09% | +7,073+2.9% | Added |
| Qube Research & Technologies Ltd | 240,918 | $8.62M | 0.01% | +240,918 | New |
| Northern Trust Corp | 230,056 | $8.23M | 0.00% | −592−0.3% | Reduced |
| Tower Research Capital LLC (TRC) | 228,748 | $8.18M | 0.23% | +222,852+3,779.7% | Added |
| Bank of America Corp | 193,779 | $6.93M | 0.00% | −401,825−67.5% | Reduced |
| Legal & General Group Plc | 189,252 | $6.77M | 0.00% | −17,645−8.5% | Reduced |
| State Street Corp | 144,938 | $5.18M | 0.00% | −1,291−0.9% | Reduced |
| Ethic Inc. | 129,167 | $4.62M | 0.08% | +5,636+4.6% | Added |
| Lazard Asset Management LLC | 124,508 | $4.45M | 0.01% | −23,960−16.1% | Reduced |
| Silvercrest Asset Management Group LLC | 109,776 | $3.93M | 0.03% | +255+0.2% | Added |
| Quantinno Capital Management LP | 95,966 | $3.43M | 0.01% | +28,714+42.7% | Added |
| Invesco Ltd. | 88,872 | $3.18M | 0.00% | +19,556+28.2% | Added |
| Clear Street Markets LLC | 86,766 | $3.10M | 1.02% | +25,476+41.6% | Added |
| Pureheart Capital Pte Ltd. | 86,000 | $3.08M | 0.69% | +86,000 | New |
| KLP Kapitalforvaltning AS | 85,000 | $3.04M | 0.01% | +55,000+183.3% | Added |
| Y-Intercept (Hong Kong) Ltd | 84,686 | $3.03M | 0.07% | +78,090+1,183.9% | Added |
| Quantbot Technologies LP | 75,933 | $2.72M | 0.07% | +47,417+166.3% | Added |
| Aventail Capital Group, LP | 74,210 | $2.65M | 0.13% | −111,314−60.0% | Reduced |
| AQR Capital Management LLC | 70,856 | $2.53M | 0.00% | +30,951+77.6% | Added |
| Citigroup Inc | 67,350 | $2.41M | 0.00% | +17,813+36.0% | Added |
| O'Shaughnessy Asset Management, LLC | 66,204 | $2.37M | 0.01% | −10,714−13.9% | Reduced |
| Ruffer LLP | 59,349 | $2.12M | 0.12% | 00.0% | Unchanged |
| Manning & Napier Advisors LLC | 55,461 | $1.98M | 0.03% | −4,675−7.8% | Reduced |
| Crossmark Global Holdings, Inc. | 50,413 | $1.80M | 0.03% | +6,143+13.9% | Added |
| Highland Capital Management, LLC | 49,245 | $1.76M | 0.09% | +1,210+2.5% | Added |
| Mercer Global Advisors Inc | 48,158 | $1.72M | 0.00% | +26,211+119.4% | Added |
| BNP Paribas Arbitrage, SA | 48,149 | $1.72M | 0.00% | −78−0.2% | Reduced |
| Squarepoint Ops LLC | 46,792 | $1.67M | 0.00% | +29,700+173.8% | Added |
| QRG Capital Management, Inc. | 46,201 | $1.65M | 0.02% | −11,552−20.0% | Reduced |
| Charles Schwab Investment Management Inc | 45,639 | $1.63M | 0.00% | +3,085+7.2% | Added |
| Creative Planning | 44,095 | $1.58M | 0.00% | +3,258+8.0% | Added |
| LMR Partners LLP | 42,122 | $1.51M | 0.02% | +42,122 | New |
| New York State Common Retirement Fund | 41,145 | $1.47M | 0.00% | 00.0% | Unchanged |
| Integrated Quantitative Investments LLC | 41,145 | $1.47M | 0.42% | 00.0% | Unchanged |
| Pathstone Holdings, LLC | 40,787 | $1.46M | 0.01% | +1,193+3.0% | Added |
| Campbell & CO Investment Adviser LLC | 37,563 | $1.34M | 0.10% | −28,429−43.1% | Reduced |
| Advisor Group Holdings, Inc. | 35,871 | $1.28M | 0.00% | −851−2.3% | Reduced |
| Engineers Gate Manager LP | 35,100 | $1.26M | 0.01% | −37,174−51.4% | Reduced |
| CSS LLC | 34,580 | $1.24M | 0.07% | +9,690+38.9% | Added |
| Aquatic Capital Management LLC | 33,967 | $1.22M | 0.02% | +33,967 | New |
| Exencial Wealth Advisors, LLC | 33,953 | $1.21M | 0.04% | +1,191+3.6% | Added |
| Guggenheim Capital LLC | 31,688 | $1.13M | 0.01% | −120.0% | Reduced |
| Mariner, LLC | 29,793 | $1.07M | 0.00% | −4,312−12.6% | Reduced |
| Viking Fund Management LLC | 28,000 | $1.00M | 0.12% | 00.0% | Unchanged |
| CI Private Wealth, LLC | 27,614 | $987.8K | 0.00% | +16,075+139.3% | Added |
| Vanguard Group Inc | 26,589 | $951.1K | 0.00% | 00.0% | Unchanged |
| Omers Administration Corp | 26,500 | $947.9K | 0.01% | +16,900+176.0% | Added |
| Cerity Partners LLC | 25,064 | $896.5K | 0.00% | +1,332+5.6% | Added |
| Evergreen Capital Management LLC | 24,963 | $892.9K | 0.02% | +4,713+23.3% | Added |
| Thornburg Investment Management Inc | 23,649 | $845.9K | 0.01% | −1,382−5.5% | Reduced |
| Ameriprise Financial Inc | 23,591 | $843.9K | 0.00% | +437+1.9% | Added |
| JustInvest LLC | 23,493 | $840.4K | 0.01% | −1,422−5.7% | Reduced |
| Capital Insight Partners, LLC | 23,485 | $840.1K | 0.14% | −5,645−19.4% | Reduced |
| LPL Financial LLC | 22,380 | $800.5K | 0.00% | +201+0.9% | Added |
| Cornerstone Wealth Management, LLC | 21,580 | $771.9K | 0.04% | −1,519−6.6% | Reduced |
| Susquehanna International Group, LLP | 21,466 | $767.8K | 0.00% | +7,406+52.7% | Added |
| Cadence Wealth Management LLC | 21,393 | $765.2K | 0.40% | +775+3.8% | Added |
| Integrated Wealth Concepts LLC | 20,117 | $719.6K | 0.01% | +20,117 | New |
| Gabelli Funds LLC | 20,000 | $715.4K | 0.00% | 00.0% | Unchanged |
| Signaturefd, LLC | 18,130 | $648.5K | 0.01% | +41+0.2% | Added |
| Vident Advisory, LLC | 18,004 | $644.0K | 0.01% | +495+2.8% | Added |
| SEI Investments Co | 17,964 | $642.6K | 0.00% | +1,252+7.5% | Added |
| Bayforest Capital Ltd | 17,375 | $621.5K | 0.30% | +1,210+7.5% | Added |
| JPMorgan Chase & Co | 17,229 | $616.3K | 0.00% | +352+2.1% | Added |
| HighTower Advisors, LLC | 16,340 | $584.5K | 0.00% | +1,471+9.9% | Added |
| Wetherby Asset Management Inc | 16,268 | $581.9K | 0.02% | −708−4.2% | Reduced |
| American Century Companies Inc | 16,075 | $575.0K | 0.00% | 00.0% | Unchanged |
| Callan Family Office, LLC | 15,921 | $569.5K | 0.02% | −2,311−12.7% | Reduced |
| J2 Capital Management Inc | 15,876 | $567.9K | 0.43% | +13+0.1% | Added |
| CAPROCK Group, Inc. | 15,549 | $562.7K | 0.01% | +15,549 | New |
| Corient IA LLC | 15,000 | $536.5K | 0.40% | 00.0% | Unchanged |
| Naples Global Advisors, LLC | 14,910 | $533.3K | 0.04% | +1,225+9.0% | Added |
| Altrinsic Global Advisors LLC | 14,768 | $528.3K | 0.02% | −132−0.9% | Reduced |
| HRT Financial LP | 14,714 | $526.0K | 0.00% | +14,714 | New |