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, Q4 2025
Institutional positions in Tenaris SA as of Dec 31, 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
- 229
- +9 vs. Q3 2025
- Shares held
- 32.9M
- −2.75M (−7.7%) vs. Q3 2025
- Total value
- $1.27B
- −$9.96M (−0.8%) vs. Q3 2025
- New holders
- 47
- 76 more added
- Sold out
- 38
- 70 more reduced
3 institutions that held it in Q3 2025 haven't filed for Q4 2025 yet. Not filing isn't selling, so they aren't counted as sold out or in the changes above.
Compare with Q3 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, Q4 2025
Shares, value and share of portfolio for each institution holding Tenaris SA; share changes are against Q3 2025.
| Institution | Shares | Value | % of portfolio | Change in shares | Action |
|---|---|---|---|---|---|
| Millennium Management LLC | 156,206 | $6.01M | 0.00% | −418,217−72.8% | Reduced |
| Corigliano Investment Advisers, LLC | 157,700 | $6.06M | 2.15% | +157,700 | New |
| Legal & General Group Plc | 168,043 | $6.46M | 0.00% | −21,209−11.2% | Reduced |
| State Street Corp | 200,661 | $7.72M | 0.00% | +55,723+38.4% | Added |
| UBS Group AG | 222,732 | $8.56M | 0.00% | −46,790−17.4% | Reduced |
| Northern Trust Corp | 225,021 | $8.65M | 0.00% | −5,035−2.2% | Reduced |
| Balyasny Asset Management LLC | 228,960 | $8.80M | 0.02% | +228,960 | New |
| Kiltearn Partners LLP | 248,859 | $9.57M | 2.07% | −49,600−16.6% | Reduced |
| Point72 Asset Management, L.P. | 266,087 | $10.2M | 0.02% | +266,087 | New |
| Harding Loevner LP | 311,282 | $12.0M | 0.11% | −96,865−23.7% | Reduced |
| Grantham, Mayo, Van Otterloo & Co. LLC | 332,238 | $12.8M | 0.03% | +61,358+22.7% | Added |
| Bank of America Corp | 337,218 | $13.0M | 0.00% | +143,439+74.0% | Added |
| Jump Financial, LLC | 346,283 | $13.3M | 0.17% | +26,336+8.2% | Added |
| D. E. Shaw & Co., Inc. | 471,555 | $18.1M | 0.01% | −125,527−21.0% | Reduced |
| Assetmark, Inc | 503,917 | $19.4M | 0.04% | +23,702+4.9% | Added |
| Invesco Ltd. | 546,204 | $21.0M | 0.00% | +457,332+514.6% | Added |
| Medina Singh Partners, LLC | 561,495 | $21.6M | 5.04% | +541+0.1% | Added |
| Massachusetts Financial Services Co | 656,439 | $25.2M | 0.01% | +53,553+8.9% | Added |
| BlackRock, Inc. | 696,444 | $26.8M | 0.00% | +55,306+8.6% | Added |
| Goldman Sachs Group Inc | 819,576 | $31.5M | 0.00% | +114,393+16.2% | Added |
| Citadel Advisors LLC | 932,396 | $35.9M | 0.02% | +920,799+7,940.0% | Added |
| Morgan Stanley | 1,169,688 | $45.0M | 0.00% | −1,929−0.2% | Reduced |
| Dimensional Fund Advisors LP | 1,234,828 | $47.5M | 0.01% | +100,568+8.9% | Added |
| Price T Rowe Associates Inc | 1,649,724 | $63.4M | 0.01% | −137,621−7.7% | Reduced |
| Van Eck Associates Corp | 2,019,185 | $77.6M | 0.06% | +408,592+25.4% | Added |
| FMR LLC | 2,198,633 | $84.5M | 0.00% | −96,616−4.2% | Reduced |
| Wellington Management Group LLP | 2,682,137 | $103.1M | 0.02% | +546,144+25.6% | Added |
| Renaissance Technologies LLC | 2,964,344 | $114.0M | 0.18% | −386,300−11.5% | Reduced |
| Westwood Global Investments, LLC | 7,272,404 | $279.6M | 14.22% | −319,256−4.2% | Reduced |
| Encompass Capital Advisors LLC | 0 | $0 | 0.00% | −1,432,704−100.0% | Sold out |
| Optiver Holding B.V. | 0 | $0 | 0.00% | −905,328−100.0% | Sold out |
| Abc Arbitrage SA | 0 | $0 | 0.00% | −775,204−100.0% | Sold out |
| Jane Street Group, LLC | 0 | $0 | 0.00% | −378,260−100.0% | Sold out |
| SIR Capital Management, L.P. | 0 | $0 | 0.00% | −290,097−100.0% | Sold out |
| Trexquant Investment LP | 0 | $0 | 0.00% | −250,866−100.0% | Sold out |
| Qube Research & Technologies Ltd | 0 | $0 | 0.00% | −240,918−100.0% | Sold out |
| Clear Street Markets LLC | 0 | $0 | 0.00% | −86,766−100.0% | Sold out |
| Pureheart Capital Pte Ltd. | 0 | $0 | 0.00% | −86,000−100.0% | Sold out |
| KLP Kapitalforvaltning AS | 0 | $0 | 0.00% | −85,000−100.0% | Sold out |
| Ruffer LLP | 0 | $0 | 0.00% | −59,349−100.0% | Sold out |
| Squarepoint Ops LLC | 0 | $0 | 0.00% | −46,792−100.0% | Sold out |
| Campbell & CO Investment Adviser LLC | 0 | $0 | 0.00% | −37,563−100.0% | Sold out |
| Omers Administration Corp | 0 | $0 | 0.00% | −26,500−100.0% | Sold out |
| Capital Insight Partners, LLC | 0 | $0 | 0.00% | −23,485−100.0% | Sold out |
| Cornerstone Wealth Management, LLC | 0 | $0 | 0.00% | −21,580−100.0% | Sold out |
| Bayforest Capital Ltd | 0 | $0 | 0.00% | −17,375−100.0% | Sold out |
| HRT Financial LP | 0 | $0 | 0.00% | −14,714−100.0% | Sold out |
| Centiva Capital, LP | 0 | $0 | 0.00% | −11,942−100.0% | Sold out |
| Brevan Howard Capital Management LP | 0 | $0 | 0.00% | −9,750−100.0% | Sold out |
| MML Investors Services, LLC | 0 | $0 | 0.00% | −9,115−100.0% | Sold out |
| Graham Capital Management, L.P. | 0 | $0 | 0.00% | −7,999−100.0% | Sold out |
| Franklin Resources Inc | 0 | $0 | 0.00% | −6,727−100.0% | Sold out |
| Park Avenue Securities LLC | 0 | $0 | 0.00% | −6,587−100.0% | Sold out |
| Principal Street Partners, LLC | 0 | $0 | 0.00% | −6,578−100.0% | Sold out |
| Flagship Harbor Advisors, LLC | 0 | $0 | 0.00% | −5,984−100.0% | Sold out |
| Knights of Columbus Asset Advisors LLC | 0 | $0 | 0.00% | −4,850−100.0% | Sold out |
| Advisory Services Network, LLC | 0 | $0 | 0.00% | −1,321−100.0% | Sold out |
| Pinnacle Holdings, LLC | 0 | $0 | 0.00% | −774−100.0% | Sold out |
| Ameritas Advisory Services, LLC | 0 | $0 | 0.00% | −750−100.0% | Sold out |
| Principal Securities, Inc. | 0 | $0 | 0.00% | −677−100.0% | Sold out |
| Caitlin John, LLC | 0 | $0 | 0.00% | −300−100.0% | Sold out |
| Wealthspire Advisors, LLC | 0 | $0 | 0.00% | −283−100.0% | Sold out |
| Raffa Wealth Management, LLC | 0 | $0 | 0.00% | −217−100.0% | Sold out |
| Highline Wealth Partners LLC | 0 | $0 | 0.00% | −40−100.0% | Sold out |
| Retirement Wealth Solutions LLC | 0 | $0 | 0.00% | −25−100.0% | Sold out |
| Montag A & Associates Inc | 0 | $0 | 0.00% | −15−100.0% | Sold out |
| Palisade Asset Management, LLC | 0 | $0 | 0.00% | −5−100.0% | Sold out |
| Wetherby Asset Management Inc | – | – | – | – | Not filed |
| Binnacle Investments Inc | – | – | – | – | Not filed |
| Guerra Advisors Inc | – | – | – | – | Not filed |