Driehaus Capital Management LLC
Position in RYTM — Rhythm Pharmaceuticals, Inc.
CIK 938206
Chicago, IL
Position in RYTM
as of Mar 31, 2026
· filed May 15, 2026
Position Value
$37,966,405
-$99,603,757 QoQ
Shares Held
436,546
-66.0% QoQ
Ownership
0.637%
of shares outstanding
% of Portfolio
0.28%
of 13F equity value
Holder Rank
—
not a current holder
Holding Since
Sep 2022
15 quarters on record
Voting authority
Sole 76.60063315206187.ToString("F0")%
Shared 0.ToString("F0")%
None 23.399366847938133.ToString("F0")%
Common Shares in RYTM Over Time
Shares Held
Position Value (USD)
Position in Biotechnology
Healthcare · as of Mar 31, 2026Driehaus Capital Management LLC holds $2,981,444,927 across 55 Biotechnology names. RYTM ranks #26 (1.3% of the industry book) .
| # | Ticker | Company | Shares | Value (USD) | Open |
|---|---|---|---|---|---|
| 1 | PRAX |
Praxis Precision Medicines, Inc.
|
949,225 | $305,830,802 | |
| 2 | XENE |
Xenon Pharmaceuticals Inc.
|
4,491,653 | $261,189,621 | |
| 3 | CRNX |
Crinetics Pharmaceuticals, Inc.
|
6,395,922 | $232,299,887 | |
| 4 | APGE |
Apogee Therapeutics, Inc.
|
1,920,800 | $161,673,736 | |
| 5 | EWTX |
Edgewise Therapeutics, Inc.
|
4,477,942 | $141,055,173 | |
| 6 | SYRE |
Spyre Therapeutics, Inc.
|
2,790,785 | $140,767,195 | |
| 7 | DFTX |
Definium Therapeutics, Inc.
|
5,911,889 | $111,734,702 | |
| 8 | SEPN |
Septerna, Inc.
|
4,395,572 | $105,625,595 |
All Filings in RYTM
Export CSV
15 filing rows on record
| Report Date | Value (USD) | Shares | Type | Discretion | Filed | |
|---|---|---|---|---|---|---|
| 2026-03-31 | $37,966,405 | 436,546 | Shares | Sole | 2026-05-15 | |
| 2025-12-31 | $137,570,162 | 1,285,222 | Shares | Sole | 2026-02-17 | |
| 2025-09-30 | $139,747,437 | 1,383,775 | Shares | Sole | 2025-11-14 | |
| 2025-06-30 | $80,248,266 | 1,269,952 | Shares | Sole | 2025-08-14 | |
| 2025-03-31 | $77,231,425 | 1,458,022 | Shares | Sole | 2025-05-15 | |
| 2024-12-31 | $72,268,780 | 1,290,975 | Shares | Sole | 2025-02-14 | |
| 2024-09-30 | $68,080,281 | 1,299,490 | Shares | Sole | 2024-11-14 | |
| 2024-06-30 | $48,548,112 | 1,182,370 | Shares | Sole | 2024-08-15 | |
| 2024-03-31 | $37,069,031 | 855,505 | Shares | Sole | 2024-05-15 | |
| 2023-12-31 | $27,531,662 | 598,905 | Shares | Sole | 2024-02-14 | |
| 2023-09-30 | $6,293,462 | 274,524 | Shares | Sole | 2023-11-14 | |
| 2023-06-30 | $379,154 | 22,993 | Shares | Sole | 2023-08-14 | |
| 2023-03-31 | $410,195 | 22,993 | Shares | Sole | 2023-05-15 | |
| 2022-12-31 | $669,556 | 22,993 | Shares | Sole | 2023-02-14 | |
| 2022-09-30 | $563,328 | 22,993 | Shares | Sole | 2022-11-14 | |
| No filing history on record for this holder in this stock. | ||||||