RHYTHM PHARMACEUTICALS INC · CUSIP 76243J105 · CIK 1224962
As of 2026-06-30, PERCEPTIVE ADVISORS LLC reported 2.59M RYTM (shares), valued at $287.16M, or 4.46% of its reported non-derivative portfolio. Filed 2026-08-14.
Verify history & sources →Shares increased 8.95%; reported value increased 39.09%, and weight changed +0.38 pp. Weight depends on both the security valuation and total portfolio value, not trade proceeds.
Left: % · Right: Shares · Independently scaled axes
Exact data and methodology
Axes scale independently; a crossing does not mean equal values. Weight uses each quarter's total reported non-derivative value. Same CUSIP; missing quarters are gaps, not zero. Revised history may include later disclosures.
| Quarter | Weight | Quantity | Source |
|---|---|---|---|
| Q2 2026 | 4.46% | 2,586,295 | SEC filing ↗Filed Aug 14, 2026 |
| Q1 2026 | 4.08% | 2,373,795 | SEC filing ↗Filed May 29, 2026Amended |
| Q4 2025 | 4.99% | 2,546,391 | SEC filing ↗Filed Feb 17, 2026 |
| Q3 2025 | 8.33% | 419,104,969 | SEC filing ↗Filed Nov 14, 2025 |
| Q2 2025 | 5.73% | 2,418,299 | SEC filing ↗Filed Aug 14, 2025 |
| Q1 2025 | 4.79% | 2,548,445 | SEC filing ↗Filed Aug 6, 2025Amended |
| Q4 2024 | 5.74% | 3,680,473 | SEC filing ↗Filed Feb 14, 2025 |
| Q3 2024 | 4.00% | 3,560,214 | SEC filing ↗Filed Nov 14, 2024 |
| Q2 2024 | 3.42% | 3,446,579 | SEC filing ↗Filed Aug 16, 2024Amended |
| Q1 2024 | 2.50% | 3,268,579 | SEC filing ↗Filed Aug 6, 2024Amended |
| Q4 2023 | 2.21% | 2,154,110 | SEC filing ↗Filed Feb 26, 2024Amended |
| Q3 2023 | 0.29% | 380,828 | SEC filing ↗Filed Nov 14, 2023 |
History & evidence by quarter
| Quarter | Weight | Quantity | Value | Change explained | Source |
|---|---|---|---|---|---|
| Q3 2023 | 0.29% | 380,828 | $8.73M | The prior quarter is outside the free window. Sign in for the comparison. | SEC filing ↗ Filed Nov 14, 2023 |
| Q4 2023 | 2.21% | 2,154,110 | $99.02M | Shares increased 465.64%; reported value increased 1034.24%, and weight changed +1.92 pp. Weight depends on both the security valuation and total portfolio value, not trade proceeds. | SEC filing ↗ Filed Feb 26, 2024 |
| Q1 2024 | 2.50% | 3,268,579 | $141.63M | Shares increased 51.74%; reported value increased 43.02%, and weight changed +0.29 pp. Weight depends on both the security valuation and total portfolio value, not trade proceeds. | SEC filing ↗ Filed Aug 6, 2024 |
| Q2 2024 | 3.42% | 3,446,579 | $141.52M | Shares increased 5.45%; reported value decreased 0.08%, and weight changed +0.92 pp. Weight depends on both the security valuation and total portfolio value, not trade proceeds. | SEC filing ↗ Filed Aug 16, 2024 |
| Q3 2024 | 4.00% | 3,560,214 | $186.52M | Shares increased 3.30%; reported value increased 31.80%, and weight changed +0.58 pp. Weight depends on both the security valuation and total portfolio value, not trade proceeds. | SEC filing ↗ Filed Nov 14, 2024 |
| Q4 2024 | 5.74% | 3,680,473 | $206.03M | Shares increased 3.38%; reported value increased 10.46%, and weight changed +1.74 pp. Weight depends on both the security valuation and total portfolio value, not trade proceeds. | SEC filing ↗ Filed Feb 14, 2025 |
| Q1 2025 | 4.79% | 2,548,445 | $134.99M | Shares decreased 30.76%; reported value decreased 34.48%, and weight changed -0.95 pp. Weight depends on both the security valuation and total portfolio value, not trade proceeds. | SEC filing ↗ Filed Aug 6, 2025 |
| Q2 2025 | 5.73% | 2,418,299 | $152.81M | Shares decreased 5.11%; reported value increased 13.20%, and weight changed +0.94 pp. Weight depends on both the security valuation and total portfolio value, not trade proceeds. | SEC filing ↗ Filed Aug 14, 2025 |
| Q3 2025 | 8.33% | 419,104,969 | $288.39M | Shares increased 17230.57%; reported value increased 88.72%, and weight changed +2.60 pp. Weight depends on both the security valuation and total portfolio value, not trade proceeds. | SEC filing ↗ Filed Nov 14, 2025 |
| Q4 2025 | 4.99% | 2,546,391 | $272.57M | Shares decreased 99.39%; reported value decreased 5.49%, and weight changed -3.34 pp. Weight depends on both the security valuation and total portfolio value, not trade proceeds. | SEC filing ↗ Filed Feb 17, 2026 |
| Q1 2026 | 4.08% | 2,373,795 | $206.45M | Shares decreased 6.78%; reported value decreased 24.26%, and weight changed -0.91 pp. Weight depends on both the security valuation and total portfolio value, not trade proceeds. | SEC filing ↗ Filed May 29, 2026 |
| Q2 2026 | 4.46% | 2,586,295 | $287.16M | Shares increased 8.95%; reported value increased 39.09%, and weight changed +0.38 pp. Weight depends on both the security valuation and total portfolio value, not trade proceeds. | SEC filing ↗ Filed Aug 14, 2026 |
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Figures are as reported to the SEC and merged with later amendments where Akkru could match them. Preview limits apply to what is listed, not to the totals, which come from the complete reported data. Nothing is zero-filled: a missing quarter or month is shown as missing.