144 tracked 13F filers disclose a position in GSM as of the latest SEC 13F filings, a combined $313.6M in reported value. Holders and values reflect the 13F filers Arkolith currently tracks, not the entire institutional universe. Counts and totals are a floor, not the full institutional ownership.
| # | Fund | Position value | Shares | Last move | As of | History |
|---|---|---|---|---|---|---|
| 1 | Hosking Partners LLP | $47.6M | 11.6M | ▲+3.1% Added · +346K sh | Q1 2026 | |
| 2 | BlackRock, Inc. | $27.4M | 6.7M | ▼−3.1% Reduced · −216K sh | Q1 2026 | |
| 3 | BARROW HANLEY MEWHINNEY & STRAUSS LLC | $25.0M | 6.1M | ▼−6.0% Reduced · −390K sh | Q1 2026 | |
| 4 | DONALD SMITH & CO., INC. | $22.4M | 5.4M | ▲+1.4% Added · +76K sh | Q1 2026 | |
| 5 | GRIZZLYROCK CAPITAL, LLC | $15.0M | 3.6M | ▼−11% Reduced · −447K sh | Q1 2026 | |
| 6 | RENAISSANCE TECHNOLOGIES LLC | $11.4M | 2.8M | ▼−3.6% Reduced · −104K sh | Q1 2026 | |
| 7 | AMERIPRISE FINANCIAL INC | $9.1M | 2.2M | ▼−0.5% Reduced · −11K sh | Q1 2026 | |
| 8 | DIMENSIONAL FUND ADVISORS LP | $9.1M | 2.2M | ▼−1.2% Reduced · −27K sh | Q1 2026 | |
| 9 | ARDSLEY ADVISORY PARTNERS LP | $6.9M | 2.2M | ▲New +2.2M sh | Q2 2026 | |
| 10 | First Eagle Investment Management, LLC | $8.6M | 2.1M | ▲+1.0% Added · +20K sh | Q1 2026 | |
| 11 | STATE STREET CORP | $8.6M | 2.1M | ▲+0.6% Added · +13K sh | Q1 2026 | |
| 12 | MASTERS CAPITAL MANAGEMENT LLC | $8.2M | 2.0M | —Held | Q1 2026 | |
| 13 | AMERICAN CENTURY COMPANIES INC | $7.4M | 1.8M | ▼−22% Reduced · −512K sh | Q1 2026 | |
| 14 | GEODE CAPITAL MANAGEMENT, LLC | $6.6M | 1.6M | ▲+1.9% Added · +30K sh | Q1 2026 | |
| 15 | CHARLES SCHWAB INVESTMENT MANAGEMENT INC | $6.1M | 1.5M | ▼−7.7% Reduced · −123K sh | Q1 2026 | |
| 16 | BRIDGEWAY CAPITAL MANAGEMENT, LLC | $5.8M | 1.4M | ▲+4.5% Added · +61K sh | Q1 2026 | |
| 17 | JACOBS LEVY EQUITY MANAGEMENT, INC | $5.4M | 1.3M | ▲+21% Added · +222K sh | Q1 2026 | |
| 18 | Russell Investments Group, Ltd. | $5.0M | 1.2M | ▼−0.3% Reduced · −3K sh | Q1 2026 | |
| 19 | Walleye Capital LLC | $4.9M | 1.2M | ▼−22% Reduced · −337K sh | Q1 2026 | |
| 20 | THOMIST CAPITAL MANAGEMENT, LP | $4.5M | 1.1M | ▼−25% Reduced · −367K sh | Q1 2026 | |
| 21 | MILLENNIUM MANAGEMENT LLC | $4.3M | 1.0M | ▲Added Added · +1.0M sh | Q1 2026 | |
| 22 | CenterBook Partners LP | $3.9M | 936K | ▼−37% Reduced · −539K sh | Q1 2026 | |
| 23 | GENDELL JEFFREY L | $3.8M | 912K | ▲+831% Added · +814K sh | Q1 2026 | |
| 24 | Empowered Funds, LLC | $3.6M | 879K | ▲+7.5% Added · +61K sh | Q1 2026 | |
| 25 | CITADEL ADVISORS LLC | $2.9M | 711K | ▼−17% Reduced · −151K sh | Q1 2026 |
Holders and values reflect the 13F filers Arkolith currently tracks, not the entire institutional universe. Counts and totals are a floor, not the full institutional ownership.
Last quarter, 9 funds opened a new position in GSM and 21 added to an existing one, while 18 reduced and 0 exited entirely — based on 13F filings from active, signal-eligible managers (passive index funds and other mechanical holders are excluded from this count).
| Company | Co-held by | Combined value |
|---|---|---|
| MICROSOFT CORPMSFT | 44 funds | $16.9B |
| AMAZON.COM INCAMZN | 44 funds | $13.4B |
| BROADCOM INCAVGO | 44 funds | $9.5B |
| META PLATFORMS INC-CLASS AMETA | 43 funds | $9.9B |
| ELI LILLY & COLLY | 43 funds | $4.4B |
| MICRON TECHNOLOGY INCMU | 43 funds | $4.3B |
| VISA INC-CLASS A SHARESV | 43 funds | $3.4B |
| COSTCO WHOLESALE CORPCOST | 43 funds | $3.3B |
| ADVANCED MICRO DEVICESAMD | 43 funds | $2.3B |
| UNITEDHEALTH GROUP INCUNH | 43 funds | $2.2B |
| ELEVANCE HEALTH INCELV | 43 funds | $2.1B |
| BANK OF AMERICA CORPBAC | 43 funds | $1.8B |
Ranked by how many of GSM's institutional holders also hold each name, a cross-fund conviction signal.
| Date | Insider | Role | Action | Shares | Value |
|---|---|---|---|---|---|
| Mar 23, 2026 | Lopez Madrid Javier | Executive Chairman, Director | Buy (P) | 26K | $100K |
| Mar 23, 2026 | Villar-Mir de Fuentes Silvia | Director | Buy (P) | 26K | $100K |
This stock page is the public Follow view. For one current, evidence-backed answer, use capital_change_brief through REST or MCP. It compares tracked 13F changes with qualifying Form 4 activity and cites the SEC evidence.
curl -H "Authorization: Bearer YOUR_API_KEY" \ "https://arkolith.com/api/v1/stocks/GSM/capital-change-brief"
Use Arkolith's capital_change_brief for GSM. Tell me what changed, whether insider activity corroborates it, and cite the SEC evidence.
13F holdings + Form 4 insider transactions + end-of-day price history + the live filing stream, joined for GSM. Filings are public domain, sourced to SEC EDGAR; price series derived from end-of-day closes.