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/KYMR/capital-change-brief"
Use Arkolith's capital_change_brief for KYMR. 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 | $974.5M | 11.7M | ▲+31% Added · +2.8M sh | Q1 2026 | |
| 2 | BAKER BROS. ADVISORS LP | $721.1M | 8.7M | —Held | Q1 2026 | |
| 3 | Avoro Capital Advisors LLC | $622.6M | 7.5M | —Held | Q1 2026 | |
| 4 | PRICE T ROWE ASSOCIATES INC /MD/ | $504.8M | 6.1M | ▼−1.6% Reduced · −98K sh | Q1 2026 | |
| 5 | BVF INC/IL | $458.3M | 5.5M | —Held | Q1 2026 | |
| 6 | T. Rowe Price Investment Management, Inc. | Withheld | 5.5M | ▲+768% Added · +4.8M sh | Q1 2026 | |
| 7 | BlackRock, Inc. | $421.5M | 5.1M | ▲+1.1% Added · +57K sh | Q1 2026 | |
| 8 | Siren, L.L.C. | $265.4M | 3.2M | ▼−3.0% Reduced · −100K sh | Q1 2026 | |
| 9 | VANGUARD CAPITAL MANAGEMENT LLC | $239.9M | 2.9M | ▲New +2.9M sh | Q1 2026 | |
| 10 | VANGUARD PORTFOLIO MANAGEMENT LLC | $239.4M | 2.9M | ▲New +2.9M sh | Q1 2026 | |
| 11 | STATE STREET CORP | $199.0M | 2.4M | ▲+8.1% Added · +180K sh | Q1 2026 | |
| 12 | GEODE CAPITAL MANAGEMENT, LLC | $137.1M | 1.6M | ▲+16% Added · +228K sh | Q1 2026 | |
| 13 | UBS Group AG | $85.3M | 1.0M | ▲+39% Added · +287K sh | Q1 2026 | |
| 14 | GOLDMAN SACHS GROUP INC | $74.0M | 888K | ▲+20% Added · +148K sh | Q1 2026 | |
| 15 | ALLIANCEBERNSTEIN L.P. | $69.1M | 888K | ▼−6.7% Reduced · −64K sh | Q1 2026 | |
| 16 | UBS AM, a distinct business unit of UBS ASSET MANAGEMENT AME | $73.0M | 876K | ▼−4.0% Reduced · −37K sh | Q1 2026 | |
| 17 | Holocene Advisors, LP | $69.7M | 837K | ▲+9.9% Added · +76K sh | Q1 2026 | |
| 18 | FRONTIER CAPITAL MANAGEMENT CO LLC | $63.3M | 760K | ▲+19% Added · +124K sh | Q1 2026 | |
| 19 | Commodore Capital LP | $62.5M | 750K | —Held | Q1 2026 | |
| 20 | EVENTIDE ASSET MANAGEMENT, LLC | $52.2M | 627K | ▲+0.1% Added · +495 sh | Q1 2026 | |
| 21 | DIMENSIONAL FUND ADVISORS LP | $49.4M | 593K | ▼−5.0% Reduced · −31K sh | Q1 2026 | |
| 22 | DEERFIELD MANAGEMENT COMPANY, L.P. | $46.7M | 561K | —Held | Q1 2026 | |
| 23 | FEDERATED HERMES, INC. | $44.7M | 537K | ▼−30% Reduced · −227K sh | Q1 2026 | |
| 24 | JENNISON ASSOCIATES LLC | $42.4M | 509K | ▲+2.5% Added · +12K sh | Q1 2026 | |
| 25 | Rock Springs Capital Management LP | $41.4M | 497K | —Held | 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 |
|---|---|---|---|---|---|
| Jul 7, 2026 | Mainolfi Nello | Chief Executive Officer, Director | Option exercise (M) | 4K | $0 |
| Jul 7, 2026 | Mainolfi Nello | Chief Executive Officer, Director | Option exercise (M) | 46K | $0 |
| Jul 7, 2026 | Mainolfi Nello | Chief Executive Officer, Director | Sell (S) | 50K | $6.0M |
| Jul 7, 2026 | Mainolfi Nello | Chief Executive Officer, Director | Option exercise (M) | 50K | $104K |
| Jul 1, 2026 | Goodman Noah | Chief Business Officer | Sell (S) | 3K | $387K |
| Jul 1, 2026 | Mainolfi Nello | Chief Executive Officer, Director | Option exercise (M) | 80K | $166K |
| Jul 1, 2026 | Mainolfi Nello | Chief Executive Officer, Director | Sell (S) | 2K | $212K |
| Jul 1, 2026 | Mainolfi Nello | Chief Executive Officer, Director | Sell (S) | 7K | $755K |
| Jul 1, 2026 | Mainolfi Nello | Chief Executive Officer, Director | Sell (S) | 24K | $2.8M |
| Jul 1, 2026 | Mainolfi Nello | Chief Executive Officer, Director | Sell (S) | 44K | $5.1M |
| Jul 1, 2026 | Mainolfi Nello | Chief Executive Officer, Director | Sell (S) | 3K | $389K |
| Jul 1, 2026 | Mainolfi Nello | Chief Executive Officer, Director | Option exercise (M) | 80K | $0 |
| Company | Co-held by | Combined value |
|---|---|---|
| INTUITIVE SURGICAL INCISRG | 72 funds | $4.1B |
| BOSTON SCIENTIFIC CORPBSX | 72 funds | $2.4B |
| NVIDIA CORPNVDA | 71 funds | $57.0B |
| MICROSOFT CORPMSFT | 70 funds | $34.6B |
| AMAZON.COM INCAMZN | 70 funds | $29.6B |
| BROADCOM INCAVGO | 70 funds | $20.4B |
| META PLATFORMS INC-CLASS AMETA | 70 funds | $17.4B |
| ELI LILLY & COLLY | 70 funds | $9.6B |
| ALPHABET INC-CL AGOOGL | 69 funds | $23.9B |
| MICRON TECHNOLOGY INCMU | 69 funds | $9.1B |
| SERVICENOW INCNOW | 68 funds | $2.3B |
| CVS HEALTH CORPCVS | 68 funds | $1.8B |
Ranked by how many of KYMR'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 KYMR. 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.