GSM
Ferroglobe PLC · Basic Materials · Industrial Materials
Momentum inputs (comparable managers): holder breadth 0.0% · share flow -1.7% · net new positions 0.0% — formula
All ownership figures: tracked 13F managers only, common-stock positions, reporting period Q1 2025
| Quarter | Holders | Δ | Shares | Reported value | New | Exits |
|---|---|---|---|---|---|---|
| Q2 2026 | 69 | +4 | 34.85M | $365.31M | +6 | −4 |
| Q1 2026 | 69 | +4 | 35.94M | $397.07M | +9 | −5 |
| Q4 2025 | 66 | -1 | 41.75M | $430.53M | — | −1 |
| Q3 2025 | 16 | +1 | 20.93M | $334.24M | +1 | — |
| Q2 2025 | 12 | 0 | 14.55M | $285.97M | +1 | −1 |
| Q1 2025 | 9 | 0 | 6.55M | $182.19M | — | — |
| Q4 2024 | 9 | -2 | 6.67M | $235.38M | — | −2 |
| Q3 2024 | 10 | -8 | 8.38M | $287.37M | +1 | −9 |
| Q2 2024 | 18 | — | 23.72M | $3.41B | — | — |
| # | Manager | Shares | Δ shares | Value | Their weight | Held | ||
|---|---|---|---|---|---|---|---|---|
| 1 | Trian Fund Management ✦ | 1.01M | -18.5% | $161.63M | 4.3% | ▼ Trim | 4 | SEC ↗ |
| 2 | Renaissance Technologies ✦ | 3.08M | -12.3% | $11.44M | 0.0% | ▼ Trim | 4 | SEC ↗ |
| 3 | Millennium Management ✦ | 1.11M | +168.8% | $4.12M | 0.0% | ▲ Add | 4 | SEC ↗ |
| 4 | Marshall Wace ✦ | 815.51K | +23.6% | $3.03M | 0.0% | ▲ Add | 4 | SEC ↗ ×2 |
| 5 | State Street Global Advisors ✦ (passive) | 208.55K | +27.1% | $773,706 | 0.0% | ▲ Add | 2 | SEC ↗ |
| 6 | D. E. Shaw & Co. ✦ | 156.47K | -30.9% | $580,504 | 0.0% | ▼ Trim | 4 | SEC ↗ ×2 |
| 7 | Geode Capital Management ✦ (passive) | 133.38K | -40.9% | $494,858 | 0.0% | ▼ Trim | 4 | SEC ↗ |
| 8 | Two Sigma Investments ✦ | 18.66K | -40.0% | $69,243 | 0.0% | ▼ Trim | 4 | SEC ↗ |
| 9 | Citadel Advisors ✦ | 13.62K | -92.8% | $50,526 | 0.0% | ▼ Trim | 4 | SEC ↗ |
“Their weight” = the position's share of that manager's reported 13F equity value — the conviction measure. ✦ = curated manager.
New buyers
| No new tracked buyers this quarter. |
Exited
| No tracked exits this quarter. |
Full-market context: across ALL 13F filers (SEC structured data, Q1 2026): 3 holders, 1.10M shares, $256.72M 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.
Open-market purchases (P)
No open-market insider purchases in our coverage window.
Open-market sales (S)
Officer · 32.29K sh · $138,856
Awards, exercises and tax withholding are never counted as buys or sales here. Methodology