163 tracked 13F filers disclose a position in CTMX as of the latest SEC 13F filings, a combined $848.6M 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 | FMR LLC | $150.2M | 32.0M | ▲+29% Added · +7.3M sh | Q1 2026 | |
| 2 | Kynam Capital Management, LP | $70.6M | 15.0M | ▲+67% Added · +6.0M sh | Q1 2026 | |
| 3 | STATE STREET CORP | $44.1M | 11.7M | ▲+107% Added · +6.1M sh | Q2 2026 | |
| 4 | BANK OF AMERICA CORP /DE/ | $48.0M | 10.2M | ▲12× Added · +9.3M sh | Q1 2026 | |
| 5 | PERCEPTIVE ADVISORS LLC | $47.5M | 10.1M | ▲+4.3% Added · +419K sh | Q1 2026 | |
| 6 | Venrock Adviser, LLC | $46.9M | 10.0M | ▼−36% Reduced · −5.6M sh | Q1 2026 | |
| 7 | VANGUARD CAPITAL MANAGEMENT LLC | $41.0M | 8.7M | →First observed position No prior filed position | Q1 2026 | |
| 8 | Point72 Asset Management, L.P. | $37.0M | 7.9M | ▲+52% Added · +2.7M sh | Q1 2026 | |
| 9 | CITADEL ADVISORS LLC | $25.4M | 5.4M | ▲16× Added · +5.1M sh | Q1 2026 | |
| 10 | BlackRock, Inc. | $24.6M | 5.2M | ▲+42% Added · +1.6M sh | Q1 2026 | |
| 11 | BAKER BROS. ADVISORS LP | $23.4M | 5.0M | ▲+17% Added · +725K sh | Q1 2026 | |
| 12 | GEODE CAPITAL MANAGEMENT, LLC | $17.5M | 4.7M | ▲+126% Added · +2.6M sh | Q2 2026 | |
| 13 | Nextech Invest Ltd. | $20.9M | 4.4M | ▲New +4.4M sh | Q1 2026 | |
| 14 | MARSHALL WACE, LLP | $19.4M | 4.1M | ▲+258% Added · +3.0M sh | Q1 2026 | |
| 15 | MILLENNIUM MANAGEMENT LLC | $17.2M | 3.7M | ▲13× Added · +3.4M sh | Q1 2026 | |
| 16 | Eversept Partners, LP | $13.3M | 3.6M | ▲+12% Added · +370K sh | Q2 2026 | |
| 17 | Siren, L.L.C. | $13.0M | 3.5M | —Held | Q2 2026 | |
| 18 | ADAR1 Capital Management, LLC | $16.0M | 3.4M | ▼−18% Reduced · −773K sh | Q1 2026 | |
| 19 | UBS Group AG | $14.7M | 3.1M | ▲+742% Added · +2.7M sh | Q1 2026 | |
| 20 | TWO SIGMA INVESTMENTS, LP | $12.7M | 2.7M | ▲+74% Added · +1.1M sh | Q1 2026 | |
| 21 | Qube Research & Technologies Ltd | $10.6M | 2.2M | ▲+112% Added · +1.2M sh | Q1 2026 | |
| 22 | Woodline Partners LP | $9.4M | 2.0M | ▼−14% Reduced · −336K sh | Q1 2026 | |
| 23 | DIMENSIONAL FUND ADVISORS LP | $9.1M | 1.9M | ▲+50% Added · +641K sh | Q1 2026 | |
| 24 | SUSQUEHANNA INTERNATIONAL GROUP, LLP | $8.8M | 1.9M | ▲+90% Added · +888K sh | Q1 2026 | |
| 25 | GOLDMAN SACHS GROUP INC | $6.9M | 1.5M | ▼−41% Reduced · −1.0M 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, 14 funds opened a new position in CTMX and 26 added to an existing one, while 11 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 |
|---|---|---|
| AMAZON.COM INCAMZN | 75 funds | $49.8B |
| NVIDIA CORPNVDA | 73 funds | $99.2B |
| META PLATFORMS INC-CLASS AMETA | 73 funds | $25.8B |
| MICROSOFT CORPMSFT | 72 funds | $60.0B |
| ELI LILLY & COLLY | 72 funds | $20.0B |
| ALPHABET INC-CL AGOOGL | 71 funds | $36.4B |
| MICRON TECHNOLOGY INCMU | 71 funds | $16.8B |
| APPLE INCAAPL | 68 funds | $70.3B |
| BROADCOM INCAVGO | 68 funds | $36.4B |
| TESLA INCTSLA | 67 funds | $19.6B |
| COSTCO WHOLESALE CORPCOST | 67 funds | $8.6B |
| APPLIED MATERIALS INCAMAT | 66 funds | $11.3B |
Ranked by how many of CTMX's institutional holders also hold each name, a cross-fund conviction signal.
| Date | Insider | Role | Action | Shares | Value |
|---|---|---|---|---|---|
| Jun 15, 2026 | Ogden Christopher | Chief Financial Officer | Sell (S) | 2K | $5K |
| Mar 17, 2026 | Ogden Christopher | Chief Financial Officer | Sell (S) | 19K | $124K |
| Mar 17, 2026 | BELVIN MARCIA | SVP, Chief Scientific Officer | Sell (S) | 31K | $202K |
| Mar 17, 2026 | McCarthy Sean A. | CEO, Director | Sell (S) | 119K | $764K |
| Mar 17, 2026 | Chu Yu-Waye | Chief Medical Officer | Sell (S) | 21K | $137K |
| Nov 6, 2025 | McCarthy Sean A. | CEO, Director | Sell (S) | 102K | $462K |
| Jun 16, 2025 | McCarthy Sean A. | CEO, Director | Sell (S) | 56K | $149K |
| Jun 16, 2025 | BELVIN MARCIA | SVP, Chief Scientific Officer | Sell (S) | 14K | $37K |
| Jun 16, 2025 | Ogden Christopher | Chief Financial Officer | Sell (S) | 11K | $29K |
| Jun 13, 2025 | Ogden Christopher | Chief Financial Officer | Sell (S) | 2K | $5K |
| Mar 18, 2025 | BELVIN MARCIA | SVP, Chief Scientific Officer | Sell (S) | 20K | $12K |
| Mar 18, 2025 | ROWLAND LLOYD A | General Counsel | Sell (S) | 10K | $6K |
Connected entities for CTMX
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/CTMX/capital-change-brief"
Use Arkolith's capital_change_brief for CTMX. 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 CTMX. Filings are public domain, sourced to SEC EDGAR; price series derived from end-of-day closes.