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GSM · NASDAQ · Industrial Materials

Ferroglobe (GSM)

Makes silicon metal, ferroalloys, and silica fume for industrial supply chains.

$4.50

Pre-market−0.04 (−0.88%)

At close$4.54(+12.66%)

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Breakdown13F · 13D/G · Form 4

Institutions179 holders · as of Mar 31, 2026 · largest filers plus last quarter's tail	≈ 55.33%	103.39M ADS
Insiders13 holders · as of Aug 20, 2026	49.64%	92.76M ADS
Adds to	104.97%

186.86M ADS as of Sep 3, 2026 · institutions as of Mar 31, 2026 · holders as of their latest filing

This quarter's institutional total failed a plausibility check; shown: the largest filers plus last quarter's remainder.

These groups come from separate filings that can overlap, so they add to 104.97%; nothing is left for Other.

Top shareholders13F · 13D/G · Form 4

Holder	Stake	Shares	Evidence
Grupo Villar Mir, S.a.u.Insider	48.77%	91.13M	13G/Afiled Feb 8, 2022 ↗
Cooper Creek Partners Management LLCInstitution	7.34%	13.72M ADS	13Fas of Mar 31, 2026
Hosking Partners LLPInstitution	6.19%	11.56M ADS	13Fas of Mar 31, 2026
BlackRock, Inc.Institution	3.56%	6.65M ADS	13Fas of Mar 31, 2026
Barrow Hanley Mewhinney & Strauss LLCInstitution	3.25%	6.08M ADS	13Fas of Mar 31, 2026
Donald Smith & Co., Inc.Institution	2.91%	5.43M ADS	13Fas of Mar 31, 2026
Old West Investment Management, LLCInstitution	2.10%	3.93M ADS	13Fas of Mar 31, 2026
Grizzlyrock Capital, LLCInstitution	1.94%	3.63M ADS	13Fas of Mar 31, 2026
Renaissance Technologies LLCInstitution	1.48%	2.77M ADS	13Fas of Mar 31, 2026
Royce & Associates LPInstitution	1.26%	2.35M ADS	13Fas of Mar 31, 2026
Ameriprise Financial IncInstitution	1.19%	2.22M ADS	13Fas of Mar 31, 2026
Dimensional Fund Advisors LPInstitution	1.18%	2.21M ADS	13Fas of Mar 31, 2026
First Eagle Investment Management, LLCInstitution	1.11%	2.08M ADS	13Fas of Mar 31, 2026
State Street CorpInstitution	1.11%	2.08M ADS	13Fas of Mar 31, 2026
Masters Capital Management LLCInstitution	1.07%	2.00M ADS	13Fas of Mar 31, 2026
American Century Companies IncInstitution	0.96%	1.79M ADS	13Fas of Mar 31, 2026
Geode Capital Management, LLCInstitution	0.85%	1.59M ADS	13Fas of Mar 31, 2026
Charles Schwab Investment Management IncInstitution	0.79%	1.48M ADS	13Fas of Mar 31, 2026
Bridgeway Capital Management, LLCInstitution	0.76%	1.42M ADS	13Fas of Mar 31, 2026
Jacobs Levy Equity Management, IncInstitution	0.70%	1.30M ADS	13Fas of Mar 31, 2026
Bardin Hill Investment Partners LPInstitution	0.69%	1.29M ADS	13Fas of Mar 31, 2026
Russell Investments Group, Ltd.Institution	0.65%	1.21M ADS	13Fas of Mar 31, 2026
Walleye Capital LLCInstitution	0.63%	1.19M ADS	13Fas of Mar 31, 2026
Thomist Capital Management, LPInstitution	0.58%	1.08M ADS	13Fas of Mar 31, 2026
Millennium Management LLCInstitution	0.56%	1.04M ADS	13Fas of Mar 31, 2026

13F — a manager's quarterly holdings · 13D/13G — an ownership statement filed at 5% or more

Institutions13F, as of Mar 31, 2026

179 holders · 103.39M shares · 36 new positions · 79 increased · 66 reduced · 21 closed

Holder	Shares	% outstanding	Chg q/q	Filed
Cooper Creek Partners Management LLC	13.72M	7.34%	−1.21M	May 15, 2026
Hosking Partners LLP	11.56M	6.19%	+345.6K	Apr 21, 2026
BlackRock, Inc.	6.65M	3.56%	−216.2K	May 13, 2026
Barrow Hanley Mewhinney & Strauss LLC	6.08M	3.25%	−389.8K	May 13, 2026
Donald Smith & Co., Inc.	5.43M	2.91%	+75.6K	May 14, 2026
Old West Investment Management, LLC	3.93M	2.10%	+127.8K	May 12, 2026
Grizzlyrock Capital, LLC	3.63M	1.94%	−446.9K	May 15, 2026
Renaissance Technologies LLC	2.77M	1.48%	−103.9K	May 14, 2026

Ownership statements13D/G · 5% or more, as filed

Holder	% of class	Shares	Form	Filed
Cooper Creek Partners Management LLC	7.30%	13.72M	13G	May 15, 2026 ↗
Hosking Partners LLP	5.70%	10.63M	13G	Apr 15, 2025 ↗

Insider tradesForm 4

Latest trades

Date	Insider	Type	Shares	Avg price	Owned after
Aug 14, 2026	Cos Muntanola Beatriz Garciaofficer: CHIEF FINANCE OFFICER	Sale	32,292	$4.30	31,693
Mar 23, 2026	Madrid Javier Lopezdirector, officer: Executive Chairman	Purchase	26,000	$3.86	147,200
Mar 23, 2026	de Fuentes Silvia Villar-Mirdirector	Purchase	26,000	$3.86	121,226

CongressHouse and Senate disclosures

Not reported.