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.
| Institution | Type | Change in shares | Change Position % | Shares | Reported stock balance | Portfolio quarter | Filing date |
|---|---|---|---|---|---|---|---|
| Neuberger Berman Group Llc | Buy | +3,837 | — | 3,837 | $223.21K | Q1 2026 | Oct 27, 2026 |
| Wells Fargo & Company/Mn | Buy | +35,663 | +408.8% | 44,387 | $2.58M | Q1 2026 | Jul 08, 2026 |
| Western Wealth Management, Llc | Buy | +30 | — | 30 | $1.73K | Q1 2026 | May 19, 2026 |
| Silicon Valley Capital Partners | Buy | +18 | — | 18 | $1.05K | Q1 2026 | May 19, 2026 |
| Bank Of America Corp | Sell | -178,781 | -53.0% | 158,437 | $9.22M | Q1 2026 | May 18, 2026 |
| Strategic Investment Advisors / Mi | Sell | -987 | -10.4% | 8,518 | $495.60K | Q1 2026 | May 18, 2026 |
| Fmr Llc | Buy | +6,053,126 | +275.3% | 8,251,759 | $480.09M | Q1 2026 | May 15, 2026 |
| Driehaus Capital Management Llc | Buy | +888,346 | — | 888,346 | $51.68M | Q1 2026 | May 15, 2026 |
| Van Eck Associates Corp | Buy | +873,847 | +43.3% | 2,893,032 | $168.32M | Q1 2026 | May 15, 2026 |
| Citadel Advisors Llc | Sell | -639,973 | -68.6% | 292,423 | $17.01M | Q1 2026 | May 15, 2026 |
| Wellington Management Group Llp | Sell | -277,103 | -10.3% | 2,405,034 | $139.92M | Q1 2026 | May 15, 2026 |
| Capital Wealth Planning, Llc | Buy | +240,514 | — | 240,514 | $13.99M | Q1 2026 | May 15, 2026 |
| Price T Rowe Associates Inc | Sell | -204,514 | -12.4% | 1,445,210 | $84.08M | Q1 2026 | May 15, 2026 |
| National Bank Of Canada | Buy | +145,855 | — | 145,855 | $8.48M | Q1 2026 | May 15, 2026 |
| Tower Research Capital Llc (Trc) | Sell | -99,906 | -100.0% | 27 | $1.57K | Q1 2026 | May 15, 2026 |
| Goldman Sachs Group Inc | Sell | -98,682 | -12.0% | 720,894 | $41.94M | Q1 2026 | May 15, 2026 |
| Xtx Topco Ltd | Sell | -87,507 | -85.9% | 14,337 | $834.13K | Q1 2026 | May 15, 2026 |
| Millennium Management Llc | Sell | -87,483 | -56.0% | 68,723 | $4.00M | Q1 2026 | May 15, 2026 |
| Fearnley Asset Management As | Buy | +64,700 | +134.8% | 112,700 | $6.56M | Q1 2026 | May 15, 2026 |
| Gts Securities Llc | Buy | +62,686 | — | 62,686 | $3.65M | Q1 2026 | May 15, 2026 |
| Royal Bank Of Canada | Sell | -59,162 | -85.9% | 9,695 | $564.00K | Q1 2026 | May 15, 2026 |
| Campbell & Co Investment Adviser Llc | Buy | +41,043 | — | 41,043 | $2.39M | Q1 2026 | May 15, 2026 |
| Aqr Capital Management Llc | Buy | +34,570 | +31.2% | 145,427 | $8.46M | Q1 2026 | May 15, 2026 |
| Bridgewater Associates, Lp | Buy | +28,630 | — | 28,630 | $1.67M | Q1 2026 | May 15, 2026 |
| Aventail Capital Group, Lp | Buy | +26,204 | +42.8% | 87,367 | $5.08M | Q1 2026 | May 15, 2026 |
| Vident Advisory, Llc | Buy | +25,791 | +149.5% | 43,041 | $2.50M | Q1 2026 | May 15, 2026 |
| Quantinno Capital Management Lp | Buy | +25,271 | +20.9% | 146,347 | $8.51M | Q1 2026 | May 15, 2026 |
| Fora Capital, Llc | Buy | +22,994 | — | 22,994 | $1.34M | Q1 2026 | May 15, 2026 |
| Harding Loevner Lp | Sell | -18,424 | -5.9% | 292,858 | $17.04M | Q1 2026 | May 15, 2026 |
| Two Sigma Securities, Llc | Buy | +16,317 | — | 16,317 | $949.32K | Q1 2026 | May 15, 2026 |
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.
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