Ferroglobe PLC - Ordinary Shares (GSM)
GSM moved a median of -0.13% 30 minutes after news, and -0.46% by the close. How GSM actually reacts to news — the realized, point-in-time move the market made, measured across 107 labeled events over the last three years with zero look-ahead.
GSM’s median reaction, across the day.
| Horizon | Median | % positive | Events |
|---|---|---|---|
| 5-min | 0.00% | 39% | 107 |
| 30-min | -0.13% | 46% | 107 |
| 60-min | -0.55% | 39% | 107 |
| to close | -0.46% | 37% | 107 |
| Middle 50% of GSM reactions | -1.25% to +1.36% |
|---|---|
| Median reaction (30-min) | -0.13% |
| Measured reactions | 107 |
Half of all Ferroglobe PLC - Ordinary Shares news events land between -1.25% and +1.36% at 30 minutes.
Reaction stats as of 2026-09-21. Newest measured event . Reaction = percent move vs. the price at the news timestamp.
Email me when GSM moves on news.
One email per qualifying move — the headline, the measured reaction, and how it compares to GSM's baseline. Nothing else.
Recent GSM events, each with its measured reaction.
| Date | Headline | Event | Source | 5-min | To close |
|---|---|---|---|---|---|
| Ferroglobe Comments on European Commission's Initiation of Interim Review of Antidumping Measures on Chinese Silicon Metal Imports | Press release | GlobeNewswire | +1.96% | +10.51% | |
| Ferroglobe Reports Second Quarter 2026 Financial Results | Press release | GlobeNewswire | +4.52% | +4.27% | |
| Form 6-K Ferroglobe PLC For: Aug 04 | SEC filing · Form 6-K | SEC EDGAR | +4.52% | +4.27% | |
| Ferroglobe PLC Schedules Second Quarter 2026 Earnings Call for August 5, 2026 | Press release | GlobeNewswire | +1.96% | +2.41% | |
| Form 6-K Ferroglobe PLC For: Jun 18 | SEC filing · Form 6-K | SEC EDGAR | -1.29% | +0.77% | |
| Form 6-K Ferroglobe PLC For: May 20 | SEC filing · Form 6-K | SEC EDGAR | +0.76% | +4.58% | |
| Form SD Ferroglobe PLC | SEC filing · Form SD | SEC EDGAR | -0.73% | -2.20% | |
| Ferroglobe Reports First Quarter 2026 Financial Results | Press release | GlobeNewswire | +2.97% | +0.42% | |
| Form 6-K Ferroglobe PLC For: May 05 | SEC filing · Form 6-K | SEC EDGAR | +2.97% | +0.42% | |
| Ferroglobe PLC Schedules First Quarter 2026 Earnings Call for May 6, 2026 | Press release | GlobeNewswire | +0.45% | +2.92% | |
| Form 20-F Ferroglobe PLC For: Dec 31 | SEC filing · Form 20-F | SEC EDGAR | +3.29% | +0.47% | |
| Ferroglobe Reports Fourth Quarter and Full Year 2025 Financial Results | Press release | GlobeNewswire | +7.62% | -1.95% | |
| Form 6-K Ferroglobe PLC For: Feb 17 | SEC filing · Form 6-K | SEC EDGAR | +7.62% | -1.95% | |
| Ferroglobe PLC Schedules Fourth Quarter and Full-Year 2025 Earnings Call for February 18, 2026 | Press release | GlobeNewswire | +0.20% | +2.02% | |
| Ferroglobe Reports Third Quarter 2025 Financial Results | Press release | GlobeNewswire | -0.95% | -1.90% | |
| Form 6-K Ferroglobe PLC For: Nov 05 | SEC filing · Form 6-K | SEC EDGAR | -0.95% | -1.90% | |
| Ferroglobe PLC Schedules Third Quarter 2025 Earnings Call for November 6, 2025 | Press release | GlobeNewswire | -1.40% | +2.80% | |
| Form SD Ferroglobe PLC | SEC filing · Form SD | SEC EDGAR | -0.24% | -0.47% | |
| Ferroglobe Reports Second Quarter 2025 Financial Results | Press release | GlobeNewswire | +5.36% | +21.02% | |
| Form 6-K Ferroglobe PLC For: Aug 05 | SEC filing · Form 6-K | SEC EDGAR | +5.36% | +21.02% | |
| Ferroglobe PLC Schedules Second Quarter 2025 Earnings Call for August 6, 2025 | Press release | GlobeNewswire | +0.00% | -0.21% | |
| Form 6-K Ferroglobe PLC For: Jul 02 | SEC filing · Form 6-K | SEC EDGAR | +0.00% | +6.00% | |
| Ferroglobe PLC Joins the Russell 2000® and Russell 3000® Indexes | Press release | GlobeNewswire | -0.96% | +0.27% | |
| Form 6-K Ferroglobe PLC For: Jun 26 | SEC filing · Form 6-K | SEC EDGAR | -1.33% | -2.66% | |
| Form 6-K Ferroglobe PLC For: May 22 | SEC filing · Form 6-K | SEC EDGAR | +0.60% | +2.41% | |
| Ferroglobe Reports First Quarter 2025 Financial Results | Press release | GlobeNewswire | -3.94% | +5.15% | |
| Form 6-K Ferroglobe PLC For: May 07 | SEC filing · Form 6-K | SEC EDGAR | -3.94% | +5.15% | |
| Form 20-F Ferroglobe PLC For: Dec 31 | SEC filing · Form 20-F | SEC EDGAR | +0.00% | +0.00% | |
| Ferroglobe PLC Schedules First Quarter 2025 Earnings Call for May 8, 2025 | Press release | GlobeNewswire | +0.00% | +0.00% | |
| Form 6-K Ferroglobe PLC For: Apr 24 | SEC filing · Form 6-K | SEC EDGAR | +0.00% | +0.00% | |
| Coreshell Raises $24M To Commercialize the Lowest-Cost and Domestically-Sourced Lithium-Ion Battery Anode | Press release | PR Newswire | +0.00% | +1.12% | |
| Ferroglobe Reports Fourth Quarter and Full Year 2024 Financial Results | Press release | GlobeNewswire | -1.29% | -5.96% | |
| Form 6-K Ferroglobe PLC For: Feb 19 | SEC filing · Form 6-K | SEC EDGAR | -1.29% | -5.96% | |
| Ferroglobe PLC Schedules Fourth Quarter and Full-year 2024 Earnings Call for February 20, 2025 | Press release | GlobeNewswire | +0.13% | -0.26% | |
| Form SD Ferroglobe PLC | SEC filing · Form SD | SEC EDGAR | +0.65% | -1.56% | |
| Ferroglobe Reports Strong Third Quarter 2024 Financial Results | Press release | GlobeNewswire | +0.92% | -0.46% | |
| Form 6-K Ferroglobe PLC For: Nov 06 | SEC filing · Form 6-K | SEC EDGAR | +0.92% | -0.46% | |
| Ferroglobe PLC Schedules Third Quarter 2024 Earnings Call for November 7, 2024 | Press release | GlobeNewswire | -0.90% | -3.36% | |
| Ferroglobe Reports Strong Second Quarter 2024 Financial Results | Press release | GlobeNewswire | -1.78% | -4.95% | |
| Form 6-K Ferroglobe PLC For: Aug 05 | SEC filing · Form 6-K | SEC EDGAR | -1.78% | -4.95% | |
| Ferroglobe PLC Schedules Second Quarter 2024 Earnings Call for August 6, 2024 | Press release | GlobeNewswire | -0.26% | -1.94% | |
| Form 6-K Ferroglobe PLC For: Jun 20 | SEC filing · Form 6-K | SEC EDGAR | -0.68% | +0.97% | |
| Form 6-K Ferroglobe PLC For: May 21 | SEC filing · Form 6-K | SEC EDGAR | +0.50% | +0.50% | |
| Ferroglobe Reports Solid First Quarter 2024 Financial Results | Press release | GlobeNewswire | -3.11% | +3.63% | |
| Form 6-K Ferroglobe PLC For: May 14 | SEC filing · Form 6-K | SEC EDGAR | -3.11% | +3.63% | |
| Ferroglobe PLC Schedules First Quarter 2024 Earnings Call for May 15, 2024 | Press release | GlobeNewswire | +0.18% | -0.55% | |
| Form 20-F Ferroglobe PLC For: Dec 31 | SEC filing · Form 20-F | SEC EDGAR | +0.18% | -0.55% | |
| Form 6-K Ferroglobe PLC For: May 10 | SEC filing · Form 6-K | SEC EDGAR | +0.18% | -0.55% | |
| Form NT 20-F Ferroglobe PLC For: Dec 31 | SEC filing · Form NT | SEC EDGAR | +0.95% | -0.57% | |
| Form 6-K Ferroglobe PLC For: Mar 28 | SEC filing · Form 6-K | SEC EDGAR | -0.20% | -5.56% |
Each reaction is the move the market actually made, measured from the news timestamp. Headlines link through to the GSM section they belong to.
Where else GSM is measured.
GSM earnings → · Analyst actions → · SEC filings →
Other Basic Materials names, measured the same way
| Ticker | Events | Median 30-min | % positive |
|---|---|---|---|
| DYNARESOURCE INC (DYNR) | 109 | 0.00% | 40% |
| Solitario Zinc Corp. (XPL) | 108 | +0.02% | 50% |
| Harmony Gold Mining Company Limited (HMY) | 107 | -0.03% | 43% |
| Leading Edge Materials Corp (LEM_CDNX) | 107 | 0.00% | 15% |
Same sector, same measurement: percent move vs. the price at the news timestamp, read at 30 minutes. Sample sizes differ, so the medians are comparable but the confidence behind them is not.
All Basic Materials names, measured the same way →
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How the numbers are made.
How is Ferroglobe PLC - Ordinary Shares's median reaction calculated?
Every labeled GSM news event is measured from its own timestamp: the last trade before the news is the base price, and the move is read at fixed horizons — 30 minutes of trading, then the close. The median across 107 events is what this page reports. Point-in-time, zero look-ahead: no event borrows information from a later one.
What counts as a positive reaction?
Any event whose price move is above zero at the horizon, relative to the last trade before the news timestamp. 46% of GSM's measured events are up at 30 minutes; the rest close the window flat or negative.
How often is this page updated?
The news table refreshes automatically as new events are labeled and priced. The reaction medians are re-pulled in batches from the dataset — the figures here are as of 2026-09-21.
Does GSM's past reaction predict its next one?
No. These are realized facts about past events, not forecasts. They describe a distribution — they say nothing certain about any future move.