GSM · Insider trading · 13F holders · Congress trades
Ferroglobe PLC (GSM)
Who is buying and selling GSM: company insiders on SEC Form 4, hedge funds and superinvestors on Form 13F, and members of Congress under the STOCK Act. Every figure links to the filing or page it comes from.
- 13F filers holding
- 14
- Insider buys, 90 days
- $0
- Insider sales, 90 days
- $139K
- Congress trades, 12 months
- 0
GSM at a glance
- Between Aug 1, 2026 and Oct 29, 2026, 1 GSM insider filed 1 sale worth $139K on SEC Form 4, and no open-market purchases.
- 14 13F filers hold GSM among their 50 largest positions, worth $154.6M combined. The biggest bets by portfolio weight are Grizzlyrock Capital, LLC (7.9%), Orchard Capital Management, LLC (2.4%) and West Tower Group, LLC (2.1%). In their latest 13Fs, 0 managers opened a new position and 3 added to one.
- No member of Congress has disclosed a trade in GSM.
- GSM last closed at $4.01 on Oct 29, 2026.
GSM insider trading
Between Aug 1, 2026 and Oct 29, 2026, 1 GSM insider filed 1 sale worth $139K on SEC Form 4, and no open-market purchases.
| Filed | Insider | Role | Trade | Shares | Price | Value | Form 4 |
|---|---|---|---|---|---|---|---|
| Aug 20, 2026 | Garcia Cos Muntanola Beatriz | CHIEF FINANCE OFFICER | Sale | 32,292 | $4.30 | $139K | SEC |
Who owns GSM? Hedge funds and superinvestors
14 13F filers hold GSM among their 50 largest positions, worth $154.6M combined. The biggest bets by portfolio weight are Grizzlyrock Capital, LLC (7.9%), Orchard Capital Management, LLC (2.4%) and West Tower Group, LLC (2.1%). In their latest 13Fs, 0 managers opened a new position and 3 added to one.
| Manager | % of portfolio | Value | Shares | Last quarter | 13F |
|---|---|---|---|---|---|
| Cooper Creek Partners Management LLCHedge fund | 1.8% | $43.3M | 13,615,302 | -0.7% shares | Q2 2026 |
| Hosking Partners LLPInstitutional asset manager | 1.2% | $33.3M | 8,374,924 | -18.1% shares | Q3 2026 |
| Donald Smith & Co., Inc.Hedge fund | 0.5% | $25.8M | 8,126,773 | +49.5% shares | Q2 2026 |
| Old West Investment Management, LLCHedge fund | 1.4% | $13.4M | 4,201,296 | +7.0% shares | Q2 2026 |
| Grizzlyrock Capital, LLCHedge fund | 7.9% | $11.3M | 3,565,959 | -1.7% shares | Q2 2026 |
| Ardsley Advisory Partners LPHedge fund | 0.8% | $6.9M | 2,185,000 | — | Q2 2026 |
| Masters Capital Management LLCHedge fund | 0.9% | $6.4M | 2,000,000 | +0.0% shares | Q2 2026 |
| Thomist Capital Management, LPHedge fund | 1.1% | $2.9M | 922,217 | -14.9% shares | Q2 2026 |
| Wolf Hill Capital Management, LPHedge fund | 0.2% | $2.4M | 755,059 | -11.8% shares | Q2 2026 |
| Orchard Capital Management, LLCInstitutional asset manager | 2.4% | $2.2M | 690,000 | +1.2% shares | Q2 2026 |
| Jb Capital Partners LPHedge fund | 0.3% | $2.1M | 655,000 | +0.0% shares | Q2 2026 |
| Bastion Asset Management Inc.Hedge fund | 0.7% | $2.1M | 604,639 | -33.5% shares | Q2 2026 |
| Dba Trading, LLCInvestment manager | 1.0% | $1.9M | 460,000 | +0.0% shares | Q2 2026 |
| West Tower Group, LLCHedge fund | 2.1% | $560K | 140,968 | +12.5% shares | Q3 2026 |
Each manager counts with its latest 13F (Q3 2026: 2, Q2 2026: 12). Screen GSM in the grand portfolio →
GSM stock trades by members of Congress
No member of Congress has disclosed a trade in GSM.
GSM questions and answers
Are insiders buying GSM stock?
Between Aug 1, 2026 and Oct 29, 2026, 1 GSM insider filed 1 sale worth $139K on SEC Form 4, and no open-market purchases.
Which hedge funds own GSM?
14 13F filers hold GSM among their 50 largest positions, worth $154.6M combined. The biggest bets by portfolio weight are Grizzlyrock Capital, LLC (7.9%), Orchard Capital Management, LLC (2.4%) and West Tower Group, LLC (2.1%). In their latest 13Fs, 0 managers opened a new position and 3 added to one.
Has Congress traded GSM?
No member of Congress has disclosed a trade in GSM.
Who is the largest holder of GSM?
Among 13F filers, Cooper Creek Partners Management LLC reports the largest GSM position, $43.3M (13,615,302 shares) in its Q2 2026 13F. The biggest bet by portfolio weight is Grizzlyrock Capital, LLC's: 7.9% of its portfolio.
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