Ownership history in DRIEHAUS CAPITAL MANAGEMENT LLC · 14 quarters on record
This page tracks every 13F SEC filing in which DRIEHAUS CAPITAL MANAGEMENT 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 | 1,285,222 | -98,553 | -7.1% | 0.93% | $137.6M | $107.04 |
| 2025 Q3 | ADDED | 1,383,775 | +113,823 | +9.0% | 1.00% | $139.7M | $100.99 |
| 2025 Q2 | REDUCED | 1,269,952 | -188,070 | -12.9% | 0.64% | $80.2M | $63.19 |
| 2025 Q1 | ADDED | 1,458,022 | +167,047 | +12.9% | 0.74% | $77.2M | $52.97 |
| 2024 Q4 | REDUCED | 1,290,975 | -8,515 | -0.7% | 0.60% | $72.3M | $55.98 |
| 2024 Q3 | ADDED | 1,299,490 | +117,120 | +9.9% | 0.58% | $68.1M | $52.39 |
| 2024 Q2 | ADDED | 1,182,370 | +326,865 | +38.2% | 0.47% | $48.5M | $41.06 |
| 2024 Q1 | ADDED | 855,505 | +256,600 | +42.8% | 0.37% | $37.1M | $43.33 |
| 2023 Q4 | ADDED | 598,905 | +324,381 | +118.2% | 0.33% | $27.5M | $45.97 |
| 2023 Q3 | ADDED | 274,524 | +251,531 | +1093.9% | 0.08% | $6.3M | $22.92 |
As of 2025 Q4 — sorted by position size