Rhythm Pharmaceuticals (RYTM) Superinvestor holders
19 of the superinvestors we track hold Rhythm Pharmaceuticals (RYTM) in their latest 13F filings, $632M in total.
Summary
The largest holder is PRIMECAP Management (PRIMECAP Management Co), with $352M, 0.2% of the portfolio.
In their latest quarter: 3 opened a new position, 4 added, 11 trimmed.
Who holds it
Each investor's latest 13F filing, largest stake first. What a 13F shows.
| Investor | Last change | Shares | Value | % of portfolio | Filed for |
|---|---|---|---|---|---|
| PRIMECAP Management PRIMECAP Management Co |
Trimmed | 3,168,853 | $352M | 0.2% | Q2 2026 |
| Hersh Cohen ClearBridge Investments |
Added | 696,473 | $77M | 0.1% | Q2 2026 |
| Aziz Hamzaogullari Loomis Sayles & Co |
Trimmed | 434,102 | $48M | 0.1% | Q2 2026 |
| Steve Cohen Point72 Asset Management |
Trimmed | 414,210 | $46M | 0.1% | Q2 2026 |
| Artisan Partners | Trimmed | 354,816 | $39M | 0.1% | Q2 2026 |
| Stanley Druckenmiller Duquesne Family Office |
New position | 203,618 | $23M | 0.5% | Q2 2026 |
| Ken Fisher Fisher Investments |
New position | 105,999 | $10M | 0.0% | Q3 2026 |
| WCM Investment Management | Trimmed | 80,552 | $9M | 0.0% | Q2 2026 |
| Jim Simons Renaissance Technologies |
Trimmed | 68,281 | $8M | 0.0% | Q2 2026 |
| Cliff Asness AQR Capital Management |
Trimmed | 59,208 | $7M | 0.0% | Q2 2026 |
| Man Group Man Group plc |
Added | 50,788 | $6M | 0.0% | Q2 2026 |
| David Shaw D. E. Shaw & Co. |
Trimmed | 30,168 | $3M | 0.0% | Q2 2026 |
| Paul Tudor Jones Tudor Investment Corp |
Trimmed | 13,886 | $2M | 0.0% | Q2 2026 |
| Paul Marshall Marshall Wace |
Trimmed | 8,174 | $907,560 | 0.0% | Q2 2026 |
| Joel Greenblatt Gotham Asset Management |
Added | 5,516 | $612,441 | 0.0% | Q2 2026 |
| Two Sigma Two Sigma Investments |
Added | 4,600 | $510,738 | 0.0% | Q2 2026 |
| Alec Litowitz Magnetar Capital |
New position | 3,908 | $433,905 | 0.0% | Q2 2026 |
| Ensign Peak Ensign Peak Advisors |
Trimmed | 3,709 | $411,810 | 0.0% | Q2 2026 |
| Acadian Acadian Asset Management |
Held | 609 | $57,000 | 0.0% | Q3 2026 |
Holders by quarter
| Quarter | Superinvestors holding it |
|---|---|
| Q2 2026 | 18 |
| Q1 2026 | 18 |
| Q4 2025 | 18 |
| Q3 2025 | 18 |
| Q2 2025 | 15 |
| Q1 2025 | 13 |
| Q4 2024 | 11 |
| Q3 2024 | 12 |
Questions about Rhythm Pharmaceuticals
Which superinvestors own Rhythm Pharmaceuticals?
19 of the superinvestors we track hold Rhythm Pharmaceuticals (RYTM) in their latest 13F filings, $632M in total. PRIMECAP Management, Hersh Cohen, Aziz Hamzaogullari, Steve Cohen, Artisan Partners, Stanley Druckenmiller.
Who is the largest superinvestor holder of RYTM?
The largest holder is PRIMECAP Management (PRIMECAP Management Co), with $352M, 0.2% of the portfolio.
From Rhythm Pharmaceuticals's annual reports filed with the SEC (XBRL data), standardised by Investingly. Information only, not investment advice.