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/ARGX/capital-change-brief"
Use Arkolith's capital_change_brief for ARGX. Tell me what changed, whether insider activity corroborates it, and cite the SEC evidence.
| # | Fund | Position value | Shares | Last move | As of | History |
|---|---|---|---|---|---|---|
| 1 | FMR LLC | $3.6B | 5.0M | ▼−11% Reduced · −601K sh | Q1 2026 | |
| 2 | PRICE T ROWE ASSOCIATES INC /MD/ | $2.5B | 3.4M | ▲+0.4% Added · +13K sh | Q1 2026 | |
| 3 | JANUS HENDERSON GROUP PLC | $1.8B | 2.5M | ▲+3.4% Added · +84K sh | Q1 2026 | |
| 4 | Artisan Partners Limited Partnership | $1.1B | 1.5M | ▼−16% Reduced · −289K sh | Q1 2026 | |
| 5 | Avoro Capital Advisors LLC | $730.3M | 1.0M | ▲+1.0% Added · +10K sh | Q1 2026 | |
| 6 | BlackRock, Inc. | $590.3M | 808K | ▲+9.9% Added · +73K sh | Q1 2026 | |
| 7 | RTW INVESTMENTS, LP | $518.1M | 709K | ▲+5.3% Added · +36K sh | Q1 2026 | |
| 8 | MORGAN STANLEY | $409.5M | 561K | ▲+8.1% Added · +42K sh | Q1 2026 | |
| 9 | ALLIANCEBERNSTEIN L.P. | $355.1M | 422K | ▲+2.0% Added · +8K sh | Q1 2026 | |
| 10 | BANK OF AMERICA CORP /DE/ | $292.2M | 400K | ▼−0.2% Reduced · −659 sh | Q1 2026 | |
| 11 | SANDS CAPITAL MANAGEMENT, LLC | $248.5M | 340K | ▼−4.6% Reduced · −17K sh | Q1 2026 | |
| 12 | Bellevue Group AG | $228.6M | 313K | ▼−32% Reduced · −149K sh | Q1 2026 | |
| 13 | SEI INVESTMENTS CO | $209.6M | 287K | ▼−13% Reduced · −44K sh | Q1 2026 | |
| 14 | WILLIAM BLAIR INVESTMENT MANAGEMENT, LLC | $194.4M | 266K | ▲+19% Added · +42K sh | Q1 2026 | |
| 15 | JENNISON ASSOCIATES LLC | $173.4M | 237K | ▲+3.4% Added · +8K sh | Q1 2026 | |
| 16 | FRANKLIN RESOURCES INC | $170.5M | 233K | ▼−1.8% Reduced · −4K sh | Q1 2026 | |
| 17 | GOLDMAN SACHS GROUP INC | $169.4M | 232K | ▲+39% Added · +65K sh | Q1 2026 | |
| 18 | Clearbridge Investments, LLC | $168.9M | 231K | ▼−55% Reduced · −282K sh | Q1 2026 | |
| 19 | CITADEL ADVISORS LLC | $160.0M | 219K | ▼−38% Reduced · −132K sh | Q1 2026 | |
| 20 | Fiera Capital Corp | $158.6M | 217K | ▼−3.9% Reduced · −9K sh | Q1 2026 | |
| 21 | AMERIPRISE FINANCIAL INC | $157.7M | 216K | ▲+15% Added · +29K sh | Q1 2026 | |
| 22 | BNP PARIBAS FINANCIAL MARKETS | $129.9M | 178K | ▲+151% Added · +107K sh | Q1 2026 | |
| 23 | Allspring Global Investments Holdings, LLC | $130.3M | 175K | ▲+1.5% Added · +3K sh | Q1 2026 | |
| 24 | AMERICAN CENTURY COMPANIES INC | $126.8M | 174K | ▼−21% Reduced · −47K sh | Q1 2026 | |
| 25 | Checkpoint Capital L.P. | $111.7M | 153K | ▲+7.7% Added · +11K 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.
No Form 4 insider transactions on file yet.
| Company | Co-held by | Combined value |
|---|---|---|
| MICROSOFT CORPMSFT | 170 funds | $51.4B |
| ELI LILLY & COLLY | 169 funds | $12.9B |
| BOSTON SCIENTIFIC CORPBSX | 169 funds | $2.8B |
| NVIDIA CORPNVDA | 168 funds | $68.5B |
| BROADCOM INCAVGO | 168 funds | $26.4B |
| AMAZON.COM INCAMZN | 167 funds | $38.6B |
| INTUITIVE SURGICAL INCISRG | 167 funds | $5.0B |
| ALPHABET INC-CL AGOOGL | 166 funds | $36.3B |
| TAIWAN SEMICONDUCTOR-SP ADRTSM | 166 funds | $14.4B |
| APPLE INCAAPL | 165 funds | $57.0B |
| META PLATFORMS INC-CLASS AMETA | 165 funds | $21.9B |
| VISA INC-CLASS A SHARESV | 165 funds | $11.2B |
Ranked by how many of ARGX's institutional holders also hold each name, a cross-fund conviction signal. Via the MCP server (ticker.co_held).
No filings captured for this ticker in the live stream yet.
13F holdings + Form 4 insider transactions + end-of-day price history + the live filing stream, joined for ARGX. 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.