ADAR1 Capital Management, LLC
Position in RYTM — Rhythm Pharmaceuticals, Inc.
CIK 1940272
AUSTIN, TX
Position in RYTM
as of Mar 31, 2026
· filed May 18, 2026
Position Value
$18,389,806
+$12,893,410 QoQ
Shares Held
211,450
+311.8% QoQ
Ownership
0.309%
of shares outstanding
% of Portfolio
1.16%
of 13F equity value
Holder Rank
—
not a current holder
Holding Since
Dec 2023
9 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 Dec 31, 2023CallValue
$45,970
CallShares
1,000
PutValue
$0
PutShares
0
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, 2026ADAR1 Capital Management, LLC holds $1,358,750,123 across 211 Biotechnology names. RYTM ranks #15 (1.4% of the industry book) .
| # | Ticker | Company | Shares | Value (USD) | Open |
|---|---|---|---|---|---|
| 1 | ABVX |
Abivax S.A.
|
1,394,019 | $155,224,015 | |
| 2 | PTGX |
Protagonist Therapeutics, Inc
|
994,119 | $104,780,142 | |
| 3 | ROIV |
Roivant Sciences Ltd.
|
3,285,906 | $91,019,596 | |
| 4 | IMVT |
Immunovant, Inc.
|
2,679,010 | $66,546,608 | |
| 5 | TERN |
Terns Pharmaceuticals, Inc.
|
914,699 | $48,222,931 | |
| 6 | CYTK |
Cytokinetics Inc
|
632,556 | $41,691,765 | |
| 7 | CRNX |
Crinetics Pharmaceuticals, Inc.
|
1,139,331 | $41,380,501 | |
| 8 | DNLI |
Denali Therapeutics Inc.
|
1,871,455 | $35,931,936 |
All Filings in RYTM
Export CSV
9 filing rows on record
| Report Date | Value (USD) | Shares | Type | Discretion | Filed | |
|---|---|---|---|---|---|---|
| 2026-03-31 | $18,389,806 | 211,450 | Shares | Sole | 2026-05-18 | |
| 2025-12-31 | $5,496,396 | 51,349 | Shares | Sole | 2026-02-18 | |
| 2025-09-30 | $5,006,175 | 49,571 | Shares | Sole | 2025-11-14 | |
| 2025-06-30 | $2,868,194 | 45,390 | Shares | Sole | 2025-08-14 | |
| 2025-03-31 | $1,954,063 | 36,890 | Shares | Sole | 2025-05-15 | |
| 2024-12-31 | $1,732,077 | 30,941 | Shares | Sole | 2025-02-13 | |
| 2024-06-30 | $533,780 | 13,000 | Shares | Sole | 2024-08-13 | |
| 2024-03-31 | $537,292 | 12,400 | Shares | Sole | 2024-05-15 | |
| 2023-12-31 | $45,970 | 1,000 | Call | Sole | 2024-02-14 | |
| No filing history on record for this holder in this stock. | ||||||