228 tracked 13F filers disclose a position in DYN as of the latest SEC 13F filings, a combined $3.0B 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 | T. Rowe Price Investment Management, Inc. | Withheld | 30.8M | ▲+76% Added · +13.2M sh | Q1 2026 | |
| 2 | JANUS HENDERSON GROUP PLC | $247.4M | 13.6M | ▼−1.7% Reduced · −240K sh | Q1 2026 | |
| 3 | BlackRock, Inc. | $212.1M | 11.7M | ▲+4.5% Added · +509K sh | Q1 2026 | |
| 4 | FMR LLC | $161.5M | 8.9M | ▲+36% Added · +2.3M sh | Q1 2026 | |
| 5 | STATE STREET CORP | $165.6M | 7.5M | ▲+12% Added · +805K sh | Q2 2026 | |
| 6 | Orbis Allan Gray Ltd | $155.6M | 7.0M | ▲+3.6% Added · +244K sh | Q2 2026 | |
| 7 | Atlas Venture Life Science Advisors, LLC | $151.0M | 6.8M | ▼−26% Reduced · −2.3M sh | Q3 2026 | |
| 8 | VANGUARD CAPITAL MANAGEMENT LLC | $116.1M | 6.4M | →First observed position No prior filed position | Q1 2026 | |
| 9 | PERCEPTIVE ADVISORS LLC | $84.6M | 4.7M | ▲+34% Added · +1.2M sh | Q1 2026 | |
| 10 | TCG Crossover Management, LLC | $83.7M | 4.6M | —Held | Q1 2026 | |
| 11 | VANGUARD PORTFOLIO MANAGEMENT LLC | $75.5M | 4.2M | →First observed position No prior filed position | Q1 2026 | |
| 12 | Vestal Point Capital, LP | $72.5M | 4.0M | ▲33× Added · +3.9M sh | Q1 2026 | |
| 13 | FCPM III SERVICES B.V. | $85.5M | 3.8M | ▼−17% Reduced · −796K sh | Q2 2026 | |
| 14 | GEODE CAPITAL MANAGEMENT, LLC | $83.2M | 3.7M | ▲+6.8% Added · +239K sh | Q2 2026 | |
| 15 | JPMORGAN CHASE & CO | $55.6M | 3.3M | ▼−8.3% Reduced · −296K sh | Q1 2026 | |
| 16 | ARMISTICE CAPITAL, LLC | $57.6M | 3.2M | ▼−2.3% Reduced · −75K sh | Q1 2026 | |
| 17 | Frazier Life Sciences Management, L.P. | $70.0M | 3.2M | —Held | Q2 2026 | |
| 18 | ORBIMED ADVISORS LLC | $52.9M | 2.9M | ▲+32% Added · +716K sh | Q1 2026 | |
| 19 | PRICE T ROWE ASSOCIATES INC /MD/ | $42.2M | 2.3M | ▲+0.2% Added · +5K sh | Q1 2026 | |
| 20 | Venrock Adviser, LLC | $39.4M | 2.2M | —Held | Q1 2026 | |
| 21 | Siren, L.L.C. | $47.3M | 2.1M | ▼−4.5% Reduced · −100K sh | Q2 2026 | |
| 22 | FRANKLIN RESOURCES INC | $36.4M | 2.0M | ▲+0.1% Added · +2K sh | Q1 2026 | |
| 23 | Deep Track Capital, LP | $36.3M | 2.0M | ▼−25% Reduced · −650K sh | Q1 2026 | |
| 24 | SAMLYN CAPITAL, LLC | $34.9M | 1.9M | ▲+29% Added · +429K sh | Q1 2026 | |
| 25 | GOLDMAN SACHS GROUP INC | $31.2M | 1.7M | ▼−25% Reduced · −560K 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, 1 fund opened a new position in DYN and 29 added to an existing one, while 28 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 |
|---|---|---|
| MICROSOFT CORPMSFT | 118 funds | $192.6B |
| NVIDIA CORPNVDA | 117 funds | $288.2B |
| AMAZON.COM INCAMZN | 116 funds | $139.0B |
| BROADCOM INCAVGO | 113 funds | $115.2B |
| META PLATFORMS INC-CLASS AMETA | 111 funds | $82.9B |
| ELI LILLY & COLLY | 110 funds | $60.2B |
| ALPHABET INC-CL AGOOGL | 108 funds | $119.3B |
| MICRON TECHNOLOGY INCMU | 108 funds | $27.6B |
| VISA INC-CLASS A SHARESV | 107 funds | $45.5B |
| UNITEDHEALTH GROUP INCUNH | 107 funds | $22.0B |
| BRISTOL-MYERS SQUIBB COBMY | 107 funds | $9.1B |
| APPLE INCAAPL | 106 funds | $217.6B |
Ranked by how many of DYN's institutional holders also hold each name, a cross-fund conviction signal.
| Date | Insider | Role | Action | Shares | Value |
|---|---|---|---|---|---|
| Aug 14, 2026 | Rhodes Jason P | Director | Sell (S) | 322K | $8.1M |
| Aug 14, 2026 | Rhodes Jason P | Director | Sell (S) | 478K | $12.0M |
| Aug 14, 2026 | Rhodes Jason P | Director | Sell (S) | 1.4M | $34.0M |
| Aug 13, 2026 | Rhodes Jason P | Director | Sell (S) | 64K | $1.7M |
| Aug 13, 2026 | Rhodes Jason P | Director | Sell (S) | 94K | $2.5M |
| Aug 13, 2026 | Rhodes Jason P | Director | Sell (S) | 268K | $7.0M |
| Aug 13, 2026 | Lucera Erick | Chief Financial Officer | Sell (S) | 2K | $47K |
| Aug 13, 2026 | Cox John | CEO & President, Director | Sell (S) | 5K | $131K |
| Aug 13, 2026 | Kerr Douglas | Chief Medical Officer | Sell (S) | 2K | $41K |
| Aug 13, 2026 | Friedl-Naderer Johanna | Chief Commercial Officer | Sell (S) | 226 | $6K |
| Jul 27, 2026 | Kersten Dirk | Director | Sell (S) | 256K | $6.5M |
| Jul 27, 2026 | Kersten Dirk | Director | Sell (S) | 5K | $140K |
Connected entities for DYN
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/DYN/capital-change-brief"
Use Arkolith's capital_change_brief for DYN. 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 DYN. Filings are public domain, sourced to SEC EDGAR; price series derived from end-of-day closes.