| # | Fund | Position value | Shares | Last move | As of | History |
|---|---|---|---|---|---|---|
| 1 | FMR LLC | $75.9M | 4.1M | —Held | Q1 2026 | |
| 2 | BVF INC/IL | $50.5M | 2.7M | —Held | Q1 2026 | |
| 3 | Fairmount Funds Management LLC | $50.5M | 2.7M | —Held | Q1 2026 | |
| 4 | Venrock Adviser, LLC | $39.2M | 2.1M | —Held | Q1 2026 | |
| 5 | FCPM III SERVICES B.V. | $30.8M | 1.7M | —Held | Q1 2026 | |
| 6 | BALYASNY ASSET MANAGEMENT L.P. | $27.7M | 1.5M | ▲14× Added · +1.4M sh | Q1 2026 | |
| 7 | Vestal Point Capital, LP | $27.6M | 1.5M | —Held | Q1 2026 | |
| 8 | Opaleye Management Inc. | $24.1M | 1.3M | ▲+11% Added · +134K sh | Q1 2026 | |
| 9 | TANG CAPITAL MANAGEMENT LLC | $21.3M | 1.2M | ▲+33% Added · +288K sh | Q1 2026 | |
| 10 | VANGUARD CAPITAL MANAGEMENT LLC | $14.7M | 801K | ▲New +801K sh | Q1 2026 | |
| 11 | Logos Global Management LP | $8.9M | 483K | ▼−20% Reduced · −118K sh | Q1 2026 | |
| 12 | Deep Track Capital, LP | $8.3M | 454K | —Held | Q1 2026 | |
| 13 | RTW INVESTMENTS, LP | $6.8M | 373K | —Held | Q1 2026 | |
| 14 | MILLENNIUM MANAGEMENT LLC | $5.9M | 324K | ▲+423% Added · +262K sh | Q1 2026 | |
| 15 | PRICE T ROWE ASSOCIATES INC /MD/ | $5.6M | 304K | ▼−10% Reduced · −35K sh | Q1 2026 | |
| 16 | Point72 Asset Management, L.P. | $5.5M | 300K | —Held | Q1 2026 | |
| 17 | Alyeska Investment Group, L.P. | $4.8M | 264K | —Held | Q1 2026 | |
| 18 | GOLDMAN SACHS GROUP INC | $4.2M | 228K | ▲+805% Added · +203K sh | Q1 2026 | |
| 19 | SUSQUEHANNA INTERNATIONAL GROUP, LLP | $3.9M | 214K | ▲+274% Added · +157K sh | Q1 2026 | |
| 20 | PERCEPTIVE ADVISORS LLC | $3.8M | 207K | ▼−54% Reduced · −247K sh | Q1 2026 | |
| 21 | MARSHALL WACE, LLP | $3.7M | 201K | ▲+820% Added · +179K sh | Q1 2026 | |
| 22 | Exome Asset Management LLC | $2.8M | 153K | ▲New +153K sh | Q1 2026 | |
| 23 | JENNISON ASSOCIATES LLC | $2.8M | 153K | ▲New +153K sh | Q1 2026 | |
| 24 | TWO SIGMA INVESTMENTS, LP | $2.1M | 116K | ▼−7.5% Reduced · −9K sh | Q1 2026 | |
| 25 | BlackRock, Inc. | $2.1M | 116K | ▲+5.9% Added · +6K 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.
| Company | Co-held by | Combined value |
|---|---|---|
| REVOLUTION MEDICINES INCRVMD | 12 funds | $1.2B |
| MIRUM PHARMACEUTICALS INCMIRM | 12 funds | $368.3M |
| DIANTHUS THERAPEUTICS INCDNTH | 12 funds | $296.8M |
| IMMUNOCORE HOLDINGS PLC-ADRIMCR | 11 funds | $462.2M |
| CYTOKINETICS INCCYTK | 11 funds | $402.1M |
| AXSOME THERAPEUTICS INCAXSM | 11 funds | $130.0M |
| UNIQURE NVQURE | 11 funds | $55.7M |
| META PLATFORMS INC-CLASS AMETA | 10 funds | $1.5B |
| CELCUITY INCCELC | 10 funds | $881.5M |
| PTC THERAPEUTICS INCPTCT | 10 funds | $779.9M |
| INTUITIVE SURGICAL INCISRG | 10 funds | $756.4M |
| COGENT BIOSCIENCES INCCOGT | 10 funds | $471.3M |
Ranked by how many of CBIO's institutional holders also hold each name, a cross-fund conviction signal.
| Date | Insider | Role | Action | Shares | Value |
|---|---|---|---|---|---|
| Jun 22, 2026 | McNeill Jonathan | President and COO | Sell (S) | 21K | $370K |
| Jun 22, 2026 | Im Ellie Eunkyung | Chief Medical Officer | Sell (S) | 1K | $22K |
| Jun 22, 2026 | Scalzo Richard William | Chief Financial Officer | Sell (S) | 1K | $20K |
| Jun 22, 2026 | Pinkas Jan | Chief Scientific Officer | Sell (S) | 1K | $23K |
| Jun 22, 2026 | Lynch Ryan | See Remarks | Sell (S) | 465 | $8K |
| Jun 22, 2026 | Bispham Barbara Harlin | See Remarks | Sell (S) | 1K | $22K |
| Jun 22, 2026 | Brumm Joshua T | Chief Executive Officer, Director | Sell (S) | 42K | $761K |
| Jun 2, 2026 | Violin Jonathan | Director | Grant (A) | 11K | $0 |
| Jun 2, 2026 | Lubner David Charles | Director | Grant (A) | 11K | $0 |
| Jun 2, 2026 | Balcom Alexandra | Director | Grant (A) | 11K | $0 |
| Jun 2, 2026 | Moran Susan | Director | Grant (A) | 11K | $0 |
| Jun 2, 2026 | Fairmount Funds Management LLC | Director, 10% Owner | Grant (A) | 11K | $0 |
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/CBIO/capital-change-brief"
Use Arkolith's capital_change_brief for CBIO. 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 CBIO. Filings are public domain, sourced to SEC EDGAR; price series derived from end-of-day closes.