Ownership history in PERCEPTIVE ADVISORS LLC · 19 quarters on record
This page tracks every 13F SEC filing in which PERCEPTIVE ADVISORS LLC reported a position in RHYTHM PHARMACEUTICALS INC (RYTM). Data includes quarterly share count, position size as % of portfolio, estimated market value, and end-of-quarter stock price — sourced directly from SEC EDGAR 13F filings.
| Quarter | Action | Shares | Change | Chg % | % of Fund | Mkt Value | Price (EOQ) |
|---|---|---|---|---|---|---|---|
| 2025 Q4 | REDUCED | 2,546,391 | -416,558,578 | -99.4% | 4.86% | $272.6M | $107.04 |
| 2025 Q3 | ADDED | 419,104,969 | +416,686,670 | +17230.6% | 8.33% | $288.4M | $100.99 |
| 2025 Q2 | REDUCED | 2,418,299 | -130,146 | -5.1% | 5.67% | $152.8M | $63.19 |
| 2025 Q1 | REDUCED | 2,548,445 | -1,132,028 | -30.8% | 4.76% | $135.0M | $52.97 |
| 2024 Q4 | ADDED | 3,680,473 | +120,259 | +3.4% | 5.68% | $206.0M | $55.98 |
| 2024 Q3 | ADDED | 3,560,214 | +113,635 | +3.3% | 3.95% | $186.5M | $52.39 |
| 2024 Q2 | ADDED | 3,446,579 | +178,000 | +5.4% | 3.37% | $141.5M | $41.06 |
| 2024 Q1 | ADDED | 3,268,579 | +1,114,469 | +51.7% | 2.46% | $141.6M | $43.33 |
| 2023 Q4 | ADDED | 2,154,110 | +1,773,282 | +465.6% | 2.21% | $99.0M | $45.97 |
| 2023 Q3 | ADDED | 380,828 | +209,969 | +122.9% | 0.29% | $8.7M | $22.92 |
As of 2025 Q4 — sorted by position size