The public view is the crawlable proof. The same sourced dataset is available through REST and MCP for agents, research scripts, and back-office tools.
This stock page is the Follow view. The Build view lets your agent query CSTM owners, fund changes, insider filings, and source links through REST or MCP.
curl -H "Authorization: Bearer YOUR_API_KEY" \ "https://arkolith.com/api/v1/stocks/CSTM"
Use Arkolith to show who owns CSTM, which funds added or reduced it, and which SEC filings prove each claim.
| # | Fund | Position value | Shares | Last move | As of | History |
|---|---|---|---|---|---|---|
| 1 | Bpifrance SA | $309.6M | 12.6M | —Held | Q1 2026 | |
| 2 | VANGUARD PORTFOLIO MANAGEMENT LLC | $96.5M | 3.9M | ▲New +3.9M sh | Q1 2026 | |
| 3 | STATE STREET CORP | $67.9M | 2.8M | ▲+3.9% Added · +103K sh | Q1 2026 | |
| 4 | Encompass Capital Advisors LLC | $60.9M | 2.5M | ▼−47% Reduced · −2.2M sh | Q1 2026 | |
| 5 | SCOPUS ASSET MANAGEMENT, L.P. | $41.3M | 1.7M | ▼−2.9% Reduced · −50K sh | Q1 2026 | |
| 6 | WESTWOOD HOLDINGS GROUP INC | $34.4M | 1.4M | ▲New +1.4M sh | Q1 2026 | |
| 7 | Kinetic Partners Management, LP | $32.3M | 1.3M | ▲New +1.3M sh | Q1 2026 | |
| 8 | Point72 Asset Management, L.P. | $24.7M | 1.0M | ▲+216% Added · +687K sh | Q1 2026 | |
| 9 | WILLIAM BLAIR INVESTMENT MANAGEMENT, LLC | $22.6M | 918K | ▲New +918K sh | Q1 2026 | |
| 10 | Cannell & Spears LLC | $22.3M | 909K | ▼−6.0% Reduced · −58K sh | Q1 2026 | |
| 11 | Engineers Gate Manager LP | $21.7M | 884K | ▼−16% Reduced · −165K sh | Q1 2026 | |
| 12 | CITADEL ADVISORS LLC | $18.9M | 771K | ▲+504% Added · +643K sh | Q1 2026 | |
| 13 | PANAGORA ASSET MANAGEMENT INC | $17.3M | 705K | ▲+13% Added · +84K sh | Q1 2026 | |
| 14 | Bridgewater Associates, LP | $12.4M | 503K | ▲New +503K sh | Q1 2026 | |
| 15 | ArrowMark Colorado Holdings LLC | $12.2M | 497K | ▼−18% Reduced · −106K sh | Q1 2026 | |
| 16 | Trexquant Investment LP | $11.9M | 483K | ▲+25% Added · +96K sh | Q1 2026 | |
| 17 | Hudson Bay Capital Management LP | $9.9M | 402K | —Held | Q1 2026 | |
| 18 | DANSKE BANK A/S | $9.7M | 395K | ▼−9.5% Reduced · −42K sh | Q1 2026 | |
| 19 | WHITEBOX ADVISORS LLC | $8.5M | 347K | ▼−31% Reduced · −153K sh | Q1 2026 | |
| 20 | IEQ CAPITAL, LLC | $6.5M | 266K | ▲+11% Added · +27K sh | Q1 2026 | |
| 21 | OCCUDO QUANTITATIVE STRATEGIES LP | $6.4M | 203K | ▲+14% Added · +26K sh | Q1 2026 | |
| 22 | VOLORIDGE INVESTMENT MANAGEMENT, LLC | $6.2M | 252K | ▼−51% Reduced · −262K sh | Q1 2026 | |
| 23 | Edgestream Partners, L.P. | $5.6M | 226K | ▲+9.9% Added · +20K sh | Q1 2026 | |
| 24 | BW Gestao de Investimentos Ltda. | $5.1M | 207K | ▼−62% Reduced · −339K sh | Q1 2026 | |
| 25 | Sequoia Financial Advisors, LLC | $4.8M | 197K | ▲+1.9% Added · +4K 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.
| Date | Insider | Role | Action | Shares | Value |
|---|---|---|---|---|---|
| Jun 4, 2026 | Ormerod John | Director | Sell (S) | 8K | $280K |
| Mar 16, 2026 | Becker Marcus | SVP CPO | Sell (S) | 10K | $251K |
| Mar 12, 2026 | Guo Jack Q. | EVP & CFO | Grant (A) | 20K | $0 |
| Mar 12, 2026 | Brun Nicolas | SVP PA, Comm & Sust | Grant (A) | 4K | $0 |
| Mar 12, 2026 | Jurkovic Philip Ryan | SVP & CHRO | Grant (A) | 10K | $0 |
| Mar 12, 2026 | Piquier Ludovic | SVP Manuf Excellence & CTO | Grant (A) | 5K | $0 |
| Mar 12, 2026 | Becker Marcus | SVP CPO | Grant (A) | 4K | $0 |
| Mar 12, 2026 | Joerg Ingrid | CEO, Director | Grant (A) | 31K | $0 |
| Mar 12, 2026 | Perkins Matthew B. | President, P&ARP | Grant (A) | 10K | $0 |
| Mar 12, 2026 | Schild Niklaus | SVP CIO & CDO | Grant (A) | 3K | $0 |
| Mar 12, 2026 | Hoffmann Philippe | President, A&T | Grant (A) | 12K | $0 |
| Mar 12, 2026 | Weiler Wiebke | Director | Grant (A) | 625 | $0 |
| Company | Co-held by | Combined value |
|---|---|---|
| CVS HEALTH CORPCVS | 52 funds | $12.0B |
| DELTA AIR LINES INCDAL | 52 funds | $6.6B |
| MICRON TECHNOLOGY INCMU | 52 funds | $6.5B |
| BOSTON SCIENTIFIC CORPBSX | 52 funds | $5.4B |
| AMAZON.COM INCAMZN | 51 funds | $41.8B |
| META PLATFORMS INC-CLASS AMETA | 51 funds | $38.5B |
| ALPHABET INC-CL AGOOGL | 51 funds | $35.0B |
| ALPHABET INC-CL CGOOG | 51 funds | $34.9B |
| WALT DISNEY CO/THEDIS | 51 funds | $25.9B |
| MERCK & CO. INC.MRK | 51 funds | $22.6B |
| INTEL CORPINTC | 51 funds | $20.6B |
| AMGEN INCAMGN | 51 funds | $18.1B |
Ranked by how many of CSTM's institutional holders also hold each name, a cross-fund conviction signal. Via the MCP server (ticker.co_held).
13F holdings + Form 4 insider transactions + end-of-day price history + the live filing stream, joined for CSTM. Filings are public domain, sourced to SEC EDGAR; price series derived from end-of-day closes. Every panel above is one call to the Arkolith API & MCP server.