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, Q1 2026
Institutional positions in Tenaris SA as of Mar 31, 2026. 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
- 264
- +38 vs. Q4 2025
- Shares held
- 39.3M
- +6.43M (+19.5%) vs. Q4 2025
- Total value
- $2.29B
- +$1.02B (+80.9%) vs. Q4 2025
- New holders
- 70
- 87 more added
- Sold out
- 32
- 66 more reduced
3 institutions that held it in Q4 2025 haven't filed for Q1 2026 yet. Not filing isn't selling, so they aren't counted as sold out or in the changes above.
Compare with Q4 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, Q1 2026
Shares, value and share of portfolio for each institution holding Tenaris SA; share changes are against Q4 2025.
| Institution | Shares | Value | % of portfolio | Change in shares | Action |
|---|---|---|---|---|---|
| FMR LLC | 8,251,759 | $480.1M | 0.03% | +6,053,126+275.3% | Added |
| Westwood Global Investments, LLC | 6,673,718 | $388.3M | 14.47% | −598,686−8.2% | Reduced |
| Renaissance Technologies LLC | 3,199,744 | $186.2M | 0.29% | +235,400+7.9% | Added |
| Van Eck Associates Corp | 2,893,032 | $168.3M | 0.13% | +873,847+43.3% | Added |
| Wellington Management Group LLP | 2,405,034 | $139.9M | 0.03% | −277,103−10.3% | Reduced |
| Price T Rowe Associates Inc | 1,445,210 | $84.1M | 0.01% | −204,514−12.4% | Reduced |
| Morgan Stanley | 1,178,069 | $68.5M | 0.00% | +8,381+0.7% | Added |
| Invesco Ltd. | 1,168,472 | $68.0M | 0.01% | +622,268+113.9% | Added |
| Dimensional Fund Advisors LP | 1,121,007 | $65.2M | 0.01% | −113,821−9.2% | Reduced |
| Driehaus Capital Management LLC | 888,346 | $51.7M | 0.38% | +888,346 | New |
| Goldman Sachs Group Inc | 720,894 | $41.9M | 0.01% | −98,682−12.0% | Reduced |
| BlackRock, Inc. | 715,791 | $41.6M | 0.00% | +19,347+2.8% | Added |
| Massachusetts Financial Services Co | 646,854 | $38.1M | 0.01% | −9,585−1.5% | Reduced |
| CWA Asset Management Group, LLC | 506,550 | $29.5M | 1.01% | +506,550 | New |
| UBS Group AG | 498,978 | $29.0M | 0.01% | +276,246+124.0% | Added |
| Assetmark, Inc | 490,777 | $28.6M | 0.06% | −13,140−2.6% | Reduced |
| Grantham, Mayo, Van Otterloo & Co. LLC | 347,584 | $20.2M | 0.05% | +15,346+4.6% | Added |
| Carrhae Capital LLP | 337,428 | $19.6M | 1.39% | +337,428 | New |
| Harding Loevner LP | 292,858 | $17.0M | 0.18% | −18,424−5.9% | Reduced |
| Citadel Advisors LLC | 292,423 | $17.0M | 0.01% | −639,973−68.6% | Reduced |
| Medina Singh Partners, LLC | 253,362 | $14.7M | 3.09% | −308,133−54.9% | Reduced |
| Capital Wealth Planning, LLC | 240,514 | $14.0M | 0.08% | +240,514 | New |
| Northern Trust Corp | 217,898 | $12.7M | 0.00% | −7,123−3.2% | Reduced |
| Kiltearn Partners LLP | 204,859 | $11.9M | 3.21% | −44,000−17.7% | Reduced |
| State Street Corp | 203,178 | $11.8M | 0.00% | +2,517+1.3% | Added |
| Connor, Clark & Lunn Investment Management Ltd. | 178,439 | $10.4M | 0.02% | +178,439 | New |
| Bank of America Corp | 158,437 | $9.22M | 0.00% | −178,781−53.0% | Reduced |
| Legal & General Group Plc | 146,515 | $8.52M | 0.00% | −21,528−12.8% | Reduced |
| Quantinno Capital Management LP | 146,347 | $8.51M | 0.01% | +25,271+20.9% | Added |
| National Bank of Canada | 145,855 | $8.48M | 0.01% | +145,855 | New |
| AQR Capital Management LLC | 145,427 | $8.46M | 0.00% | +34,570+31.2% | Added |
| Ethic Inc. | 125,572 | $7.31M | 0.11% | −18,552−12.9% | Reduced |
| Fearnley Asset Management AS | 112,700 | $6.56M | 2.14% | +64,700+134.8% | Added |
| Jane Street Group, LLC | 100,838 | $5.87M | 0.01% | +100,838 | New |
| Silvercrest Asset Management Group LLC | 100,738 | $5.86M | 0.04% | −1,395−1.4% | Reduced |
| Aventail Capital Group, LP | 87,367 | $5.08M | 0.25% | +26,204+42.8% | Added |
| Leuthold Group, LLC | 83,994 | $4.89M | 0.52% | +83,994 | New |
| Creative Planning | 72,820 | $4.24M | 0.00% | +15,008+26.0% | Added |
| Millennium Management LLC | 68,723 | $4.00M | 0.00% | −87,483−56.0% | Reduced |
| Integrated Quantitative Investments LLC | 66,798 | $3.89M | 0.70% | +23,979+56.0% | Added |
| GTS Securities LLC | 62,686 | $3.65M | 0.13% | +62,686 | New |
| Citigroup Inc | 61,446 | $3.57M | 0.00% | +13,411+27.9% | Added |
| Lazard Asset Management LLC | 58,252 | $3.39M | 0.01% | +284+0.5% | Added |
| Charles Schwab Investment Management Inc | 57,342 | $3.34M | 0.00% | +5,558+10.7% | Added |
| Manning & Napier Advisors LLC | 52,491 | $3.05M | 0.04% | −1,417−2.6% | Reduced |
| Guggenheim Capital LLC | 49,646 | $2.89M | 0.02% | +13,477+37.3% | Added |
| Crossmark Global Holdings, Inc. | 48,485 | $2.82M | 0.04% | −1,251−2.5% | Reduced |
| O'Shaughnessy Asset Management, LLC | 44,417 | $2.58M | 0.01% | −8,319−15.8% | Reduced |
| Wells Fargo & Company | 44,387 | $2.58M | 0.00% | +35,663+408.8% | Added |
| Highland Capital Management, LLC | 43,920 | $2.56M | 0.14% | −150−0.3% | Reduced |
| Vident Advisory, LLC | 43,041 | $2.50M | 0.02% | +25,791+149.5% | Added |
| Lighthouse Investment Partners, LLC | 42,500 | $2.47M | 0.09% | +6,500+18.1% | Added |
| Campbell & CO Investment Adviser LLC | 41,043 | $2.39M | 0.14% | +41,043 | New |
| Mariner, LLC | 40,307 | $2.34M | 0.00% | +9,082+29.1% | Added |
| Pathstone Holdings, LLC | 40,287 | $2.34M | 0.01% | +1,500+3.9% | Added |
| HRT Financial LP | 39,774 | $2.31M | 0.01% | +39,774 | New |
| Mercer Global Advisors Inc | 33,637 | $1.96M | 0.00% | −6,555−16.3% | Reduced |
| New York State Common Retirement Fund | 33,399 | $1.94M | 0.00% | −9,420−22.0% | Reduced |
| Skopos Labs, Inc. | 32,676 | $1.90M | 0.06% | +14,800+82.8% | Added |
| Caitong International Asset Management Co., Ltd | 32,213 | $1.87M | 0.35% | +32,207+536,783.3% | Added |
| Cerity Partners LLC | 31,623 | $1.84M | 0.00% | +1,572+5.2% | Added |
| Bank of Montreal | 30,336 | $1.76M | 0.00% | +24,650+433.5% | Added |
| American Century Companies Inc | 28,734 | $1.67M | 0.00% | +11,209+64.0% | Added |
| Bridgewater Associates, LP | 28,630 | $1.67M | 0.01% | +28,630 | New |
| Envestnet Asset Management Inc | 28,363 | $1.65M | 0.00% | −299−1.0% | Reduced |
| Mork Capital Management, LLC | 28,320 | $1.65M | 1.17% | 00.0% | Unchanged |
| SEI Investments Co | 26,728 | $1.56M | 0.00% | +6,496+32.1% | Added |
| CSS LLC | 26,650 | $1.55M | 0.09% | −7,430−21.8% | Reduced |
| Vanguard Capital Management LLC | 26,589 | $1.55M | 0.00% | +26,589 | New |
| TD Waterhouse Canada Inc. | 26,422 | $1.53M | 0.00% | +13,515+104.7% | Added |
| LPL Financial LLC | 25,442 | $1.48M | 0.00% | +4,971+24.3% | Added |
| Viking Fund Management LLC | 25,000 | $1.45M | 0.15% | −3,000−10.7% | Reduced |
| Hennion & Walsh Asset Management, Inc. | 24,042 | $1.40M | 0.05% | −828−3.3% | Reduced |
| Callan Family Office, LLC | 23,970 | $1.39M | 0.03% | +327+1.4% | Added |
| Evergreen Capital Management LLC | 23,948 | $1.39M | 0.03% | +791+3.4% | Added |
| Cadence Wealth Management LLC | 23,710 | $1.38M | 0.58% | +1,698+7.7% | Added |
| Ameriprise Financial Inc | 23,446 | $1.36M | 0.00% | +550+2.4% | Added |
| Laird Norton Trust Company, LLC | 23,295 | $1.36M | 0.03% | −199−0.8% | Reduced |
| FORA Capital, LLC | 22,994 | $1.34M | 0.10% | +22,994 | New |
| Susquehanna International Group, LLP | 22,712 | $1.32M | 0.00% | −6,874−23.2% | Reduced |
| Walleye Trading LLC | 22,182 | $1.29M | 0.03% | +22,182 | New |
| Beck Bode, LLC | 21,154 | $1.23M | 0.21% | +1,855+9.6% | Added |
| JustInvest LLC | 20,783 | $1.21M | 0.01% | −1,946−8.6% | Reduced |
| Gabelli Funds LLC | 20,000 | $1.16M | 0.01% | 00.0% | Unchanged |
| JPMorgan Chase & Co | 18,997 | $1.09M | 0.00% | −418−2.2% | Reduced |
| Hantz Financial Services, Inc. | 18,571 | $1.08M | 0.02% | +3,054+19.7% | Added |
| Toroso Investments, LLC | 18,477 | $1.07M | 0.00% | +1,264+7.3% | Added |
| Signaturefd, LLC | 18,426 | $1.07M | 0.02% | −158−0.9% | Reduced |
| North of South Capital LLP | 18,087 | $1.05M | 0.09% | +18,087 | New |
| Sanctuary Advisors, LLC | 17,631 | $1.03M | 0.01% | +17,631 | New |
| Illumine Investment Management, LLC | 17,603 | $1.02M | 0.79% | +17,603 | New |
| Chesapeake Capital Corp | 17,281 | $1.01M | 0.72% | +994+6.1% | Added |
| Thornburg Investment Management Inc | 16,792 | $977.0K | 0.01% | −4,505−21.2% | Reduced |
| Naples Global Advisors, LLC | 16,660 | $969.3K | 0.07% | +350+2.1% | Added |
| Ieq Capital, LLC | 16,634 | $967.8K | 0.00% | +1,595+10.6% | Added |
| Two Sigma Securities, LLC | 16,317 | $949.3K | 0.11% | +16,317 | New |
| Hennessy Advisors Inc | 16,200 | $942.5K | 0.03% | +4,200+35.0% | Added |
| IMC-Chicago, LLC | 15,003 | $872.9K | 0.01% | +15,003 | New |
| QRG Capital Management, Inc. | 14,970 | $871.0K | 0.01% | −2,639−15.0% | Reduced |
| Quadrant Capital Group LLC | 14,452 | $840.8K | 0.03% | +743+5.4% | Added |