TS
Tenaris S.A. · Energy · Oil & Gas Equipment & Services
Momentum inputs (comparable managers):
holder breadth +8.3% ·
share flow -15.9% ·
net new positions +7.7%
— formula
Ownership fragmentation — more holders, smaller aggregate stake
All ownership figures: tracked 13F managers only, common-stock positions, reporting period Q2 2025
| Quarter | Holders | Δ | Shares | Reported value | New | Exits |
|---|---|---|---|---|---|---|
| Q2 2026 | 84 | +4 | 28.42M | $1.56B | +9 | −5 |
| Q1 2026 | 81 | +9 | 25.58M | $1.47B | +14 | −5 |
| Q4 2025 | 72 | +1 | 20.40M | $774.87M | +1 | — |
| Q3 2025 | 15 | -1 | 13.56M | $484.98M | — | −1 |
| Q2 2025 | 13 | +1 | 12.62M | $471.84M | +1 | — |
| Q1 2025 | 9 | 0 | 12.05M | $471.09M | +1 | −1 |
| Q4 2024 | 9 | 0 | 12.35M | $466.88M | +1 | −1 |
| Q3 2024 | 9 | -2 | 12.65M | $402.20M | — | −2 |
| Q2 2024 | 11 | — | 9.63M | $293.84M | — | — |
| # | Manager | Shares | Δ shares | Value | Their weight | Held | ||
|---|---|---|---|---|---|---|---|---|
| 1 | Renaissance Technologies ✦ | 2.89M | +7.0% | $108.14M | 0.1% | ▲ Add | 5 | SEC ↗ |
| 2 | Fidelity (FMR) ✦ | 2.30M | — | $85.96M | 0.0% | n/c | 1 | SEC ↗ |
| 3 | Fidelity (FMR) ✦ | 2.30M | — | $85.96M | 0.0% | n/c | 1 | SEC ↗ |
| 4 | Fidelity (FMR) ✦ | 2.30M | — | $85.96M | 0.0% | n/c | 1 | SEC ↗ |
| 5 | Wellington Management ✦ | 2.10M | -9.8% | $78.51M | 0.0% | ▼ Trim | 5 | SEC ↗ |
| 6 | Wellington Management ✦ | 2.10M | -9.8% | $78.51M | 0.0% | ▼ Trim | 5 | SEC ↗ |
| 7 | Wellington Management ✦ | 2.10M | -9.8% | $78.51M | 0.0% | ▼ Trim | 5 | SEC ↗ |
| 8 | Wellington Management ✦ | 2.10M | -9.8% | $78.51M | 0.0% | ▼ Trim | 5 | SEC ↗ |
| 9 | Citadel Advisors ✦ | 1.72M | -54.3% | $64.43M | 0.1% | ▼ Trim | 5 | SEC ↗ |
| 10 | Citadel Advisors ✦ | 1.72M | -54.3% | $64.43M | 0.1% | ▼ Trim | 5 | SEC ↗ |
| 11 | T. Rowe Price ✦ | 1.70M | -0.3% | $63.51M | 0.0% | ▼ Trim | 5 | SEC ↗ |
| 12 | T. Rowe Price ✦ | 1.70M | -0.3% | $63.51M | 0.0% | ▼ Trim | 5 | SEC ↗ |
| 13 | T. Rowe Price ✦ | 1.70M | -0.3% | $63.51M | 0.0% | ▼ Trim | 5 | SEC ↗ |
| 14 | Millennium Management ✦ | 776.96K | -34.0% | $29.06M | 0.0% | ▼ Trim | 5 | SEC ↗ |
| 15 | BlackRock ✦ (passive) | 627.10K | — | $23.45M | 0.0% | n/c | 1 | SEC ↗ |
| 16 | BlackRock ✦ (passive) | 627.10K | — | $23.45M | 0.0% | n/c | 1 | SEC ↗ |
| 17 | D. E. Shaw & Co. ✦ | 222.01K | +35.9% | $8.30M | 0.0% | ▲ Add | 2 | SEC ↗ |
| 18 | State Street Global Advisors ✦ (passive) | 146.23K | New | $5.47M | 0.0% | New | 1 | SEC ↗ |
| 19 | Two Sigma Investments ✦ | 57.19K | -26.5% | $2.14M | 0.0% | ▼ Trim | 5 | SEC ↗ |
| 20 | AQR Capital Management ✦ | 39.91K | +68.7% | $1.49M | 0.0% | ▲ Add | 5 | SEC ↗ |
| 21 | AQR Capital Management ✦ | 39.91K | +68.7% | $1.49M | 0.0% | ▲ Add | 5 | SEC ↗ |
| 22 | AQR Capital Management ✦ | 39.91K | +68.7% | $1.49M | 0.0% | ▲ Add | 5 | SEC ↗ |
| 23 | The Vanguard Group ✦ (passive) | 26.59K | — | $994,429 | 0.0% | n/c | 1 | SEC ↗ |
| 24 | Marshall Wace ✦ | 10.06K | -90.2% | $376,244 | 0.0% | ▼ Trim | 3 | SEC ↗ |
“Their weight” = the position's share of that manager's reported 13F equity value — the conviction measure. ✦ = curated manager.
New buyers
| State Street Global Advisors | $5.47M | 0.0% |
Exited
| No tracked exits this quarter. |
Full-market context: across ALL 13F filers (SEC structured data, Q1 2026): 1 holders, 16.80M shares, $472.50M reported. This is a different, older period than the tracked-universe figures above and the two are never mixed.
What else this security's tracked holders most often hold — shared-ownership counts, not fundamental relationships.