Sofinnova Investments, Inc.
Position in RYTM — Rhythm Pharmaceuticals, Inc.
CIK 1631134
Menlo Park, CA
Position in RYTM
as of Mar 31, 2026
· filed May 15, 2026
Position Value
$39,144,849
+$10,094,836 QoQ
Shares Held
450,096
+65.8% QoQ
Ownership
0.657%
of shares outstanding
% of Portfolio
1.96%
of 13F equity value
Holder Rank
—
not a current holder
Holding Since
Sep 2024
7 quarters on record
Voting authority
Sole 100.ToString("F0")%
Shared 0.ToString("F0")%
None 0.ToString("F0")%
Common Shares in RYTM Over Time
Shares Held
Position Value (USD)
Derivatives in RYTM
reported options exposure · as of Jun 30, 2025CallValue
$0
CallShares
0
PutValue
$14,217,750
PutShares
225,000
Notional value of option positions as reported on Form 13F. Calls and puts are disclosed separately and do not net against the common-share stake above.
Position in Biotechnology
Healthcare · as of Mar 31, 2026Sofinnova Investments, Inc. holds $1,145,092,748 across 48 Biotechnology names. RYTM ranks #9 (3.4% of the industry book) .
| # | Ticker | Company | Shares | Value (USD) | Open |
|---|---|---|---|---|---|
| 1 | JAZZ |
Jazz Pharmaceuticals plc
|
598,327 | $113,113,719 | |
| 2 | VERA |
Vera Therapeutics, Inc.
|
2,793,987 | $112,402,097 | |
| 3 | COGT |
Cogent Biosciences, Inc.
|
2,113,551 | $81,350,577 | |
| 4 | RARE |
Ultragenyx Pharmaceutical Inc.
|
3,145,888 | $65,906,353 | |
| 5 | RAPP |
Rapport Therapeutics, Inc.
|
1,904,408 | $59,588,926 | |
| 6 | INSM |
INSMED Inc
|
346,075 | $56,590,184 | |
| 7 | BMRN |
Biomarin Pharmaceutical Inc
|
781,982 | $44,174,163 | |
| 8 | CELC |
Celcuity Inc.
|
366,175 | $41,795,214 |
All Filings in RYTM
Export CSV
8 filing rows on record
| Report Date | Value (USD) | Shares | Type | Discretion | Filed | |
|---|---|---|---|---|---|---|
| 2026-03-31 | $39,144,849 | 450,096 | Shares | Sole | 2026-05-15 | |
| 2025-12-31 | $29,050,013 | 271,394 | Shares | Sole | 2026-02-13 | |
| 2025-09-30 | $24,941,096 | 246,966 | Shares | Sole | 2025-11-14 | |
| 2025-06-30 | $14,217,750 | 225,000 | Put | Sole | 2025-08-14 | |
| 2025-06-30 | $37,029,971 | 586,010 | Shares | Sole | 2025-08-14 | |
| 2025-03-31 | $23,669,061 | 446,839 | Shares | Sole | 2025-05-15 | |
| 2024-12-31 | $22,248,019 | 397,428 | Shares | Sole | 2025-02-14 | |
| 2024-09-30 | $14,495,160 | 276,678 | Shares | Sole | 2024-11-13 | |
| No filing history on record for this holder in this stock. | ||||||