274 tracked 13F filers disclose a position in RYTM as of the latest SEC 13F filings, a combined $6.6B 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 | RA CAPITAL MANAGEMENT, L.P. | $579.8M | 6.7M | —Held | Q1 2026 | |
| 2 | BlackRock, Inc. | $542.4M | 6.2M | ▼−0.9% Reduced · −60K sh | Q1 2026 | |
| 3 | BAKER BROS. ADVISORS LP | $487.4M | 5.6M | —Held | Q1 2026 | |
| 4 | PRIMECAP MANAGEMENT CO/CA/ | $297.2M | 3.4M | ▼−1.8% Reduced · −61K sh | Q1 2026 | |
| 5 | VANGUARD PORTFOLIO MANAGEMENT LLC | $264.5M | 3.0M | →First observed position No prior filed position | Q1 2026 | |
| 6 | VANGUARD CAPITAL MANAGEMENT LLC | $258.1M | 3.0M | →First observed position No prior filed position | Q1 2026 | |
| 7 | STATE STREET CORP | $285.7M | 2.6M | ▲+13% Added · +302K sh | Q2 2026 | |
| 8 | PERCEPTIVE ADVISORS LLC | $206.4M | 2.4M | ▼−6.8% Reduced · −173K sh | Q1 2026 | |
| 9 | WESTFIELD CAPITAL MANAGEMENT CO LP | $245.2M | 2.2M | ▲+14% Added · +279K sh | Q2 2026 | |
| 10 | GOLDMAN SACHS GROUP INC | $170.9M | 2.0M | ▲+7.3% Added · +135K sh | Q1 2026 | |
| 11 | FMR LLC | $147.0M | 1.7M | ▼−1.0% Reduced · −17K sh | Q1 2026 | |
| 12 | Polar Capital Holdings Plc | $184.7M | 1.7M | ▲+3.0% Added · +48K sh | Q2 2026 | |
| 13 | PRICE T ROWE ASSOCIATES INC /MD/ | $143.9M | 1.7M | ▲+6.0% Added · +94K sh | Q1 2026 | |
| 14 | JPMORGAN CHASE & CO | $120.0M | 1.6M | ▲+9.1% Added · +130K sh | Q1 2026 | |
| 15 | GEODE CAPITAL MANAGEMENT, LLC | $170.3M | 1.5M | ▲+8.3% Added · +117K sh | Q2 2026 | |
| 16 | CITADEL ADVISORS LLC | $123.4M | 1.4M | ▲+825% Added · +1.3M sh | Q1 2026 | |
| 17 | FEDERATED HERMES, INC. | $111.9M | 1.3M | ▼−21% Reduced · −338K sh | Q1 2026 | |
| 18 | Checkpoint Capital L.P. | $131.7M | 1.2M | ▼−3.4% Reduced · −41K sh | Q2 2026 | |
| 19 | Siren, L.L.C. | $126.2M | 1.1M | ▲+57% Added · +411K sh | Q2 2026 | |
| 20 | Janus Henderson Group Ltd. | $79.9M | 918K | ▼−18% Reduced · −208K sh | Q1 2026 | |
| 21 | ALLIANCEBERNSTEIN L.P. | $97.5M | 910K | ▼−2.1% Reduced · −20K sh | Q1 2026 | |
| 22 | Point72 Asset Management, L.P. | $73.6M | 847K | ▲+97% Added · +417K sh | Q1 2026 | |
| 23 | Woodline Partners LP | $66.0M | 759K | ▲+10% Added · +70K sh | Q1 2026 | |
| 24 | ADAGE CAPITAL PARTNERS GP, L.L.C. | $63.1M | 726K | ▲+17% Added · +104K sh | Q1 2026 | |
| 25 | MORGAN STANLEY | $61.2M | 704K | ▲+8.1% Added · +53K 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, 8 funds opened a new position in RYTM and 35 added to an existing one, while 25 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 | 155 funds | $232.7B |
| ELI LILLY & COLLY | 155 funds | $77.0B |
| AMAZON.COM INCAMZN | 153 funds | $175.2B |
| NVIDIA CORPNVDA | 152 funds | $350.8B |
| META PLATFORMS INC-CLASS AMETA | 152 funds | $104.9B |
| BROADCOM INCAVGO | 149 funds | $136.3B |
| APPLE INCAAPL | 148 funds | $254.8B |
| MICRON TECHNOLOGY INCMU | 147 funds | $45.3B |
| INTUITIVE SURGICAL INCISRG | 147 funds | $24.2B |
| ALPHABET INC-CL AGOOGL | 146 funds | $150.3B |
| ADVANCED MICRO DEVICESAMD | 145 funds | $35.1B |
| LAM RESEARCH CORPLRCX | 145 funds | $31.7B |
Ranked by how many of RYTM's institutional holders also hold each name, a cross-fund conviction signal.
| Date | Insider | Role | Action | Shares | Value |
|---|---|---|---|---|---|
| Aug 31, 2026 | Smith Hunter C | Chief Financial Officer | Sell (S) | 28K | $3.0M |
| Aug 31, 2026 | Smith Hunter C | Chief Financial Officer | Sell (S) | 12K | $1.2M |
| Aug 31, 2026 | Smith Hunter C | Chief Financial Officer | Sell (S) | 23K | $2.4M |
| Aug 13, 2026 | Garfield Alastair | Chief Scientific Officer | Sell (S) | 800 | $95K |
| Aug 13, 2026 | Garfield Alastair | Chief Scientific Officer | Sell (S) | 3K | $402K |
| Aug 13, 2026 | Garfield Alastair | Chief Scientific Officer | Sell (S) | 2K | $182K |
| Aug 13, 2026 | Garfield Alastair | Chief Scientific Officer | Sell (S) | 2K | $233K |
| Aug 13, 2026 | Shulman Joseph | Chief Technical Officer | Sell (S) | 5K | $608K |
| Aug 13, 2026 | Lee Jennifer Kayden | EVP, Head of North America | Sell (S) | 76K | $8.9M |
| Aug 12, 2026 | Mazabraud Yann | EVP, Head of International | Sell (S) | 2K | $257K |
| Aug 12, 2026 | Mazabraud Yann | EVP, Head of International | Sell (S) | 1K | $113K |
| Aug 12, 2026 | Mazabraud Yann | EVP, Head of International | Sell (S) | 4K | $413K |
Connected entities for RYTM
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/RYTM/capital-change-brief"
Use Arkolith's capital_change_brief for RYTM. 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 RYTM. Filings are public domain, sourced to SEC EDGAR; price series derived from end-of-day closes.