Zweig-DiMenna Associates LLC
Position in RYTM — Rhythm Pharmaceuticals, Inc.
CIK 1533950
NEW YORK, NY
Position in RYTM
as of Jun 30, 2026
· filed Aug 13, 2026
Position Value
$4,674,363
-$4,060,101 QoQ
Shares Held
42,100
-48.4% QoQ
Ownership
0.061%
of shares outstanding
% of Portfolio
0.42%
of 13F equity value
Holder Rank
#107
of 299 holders
Holding Since
Dec 2025
2 quarters on record
Voting authority
Sole 100%
Shared 0%
None 0%
Common Shares in RYTM Over Time
Shares Held
Position Value (USD)
Position in Biotechnology
Healthcare · as of Jun 30, 2026Zweig-DiMenna Associates LLC holds $27,185,419 across 2 Biotechnology names. RYTM ranks #2 (17.2% of the industry book) .
| # | Ticker | Company | Shares | Value (USD) | Open |
|---|---|---|---|---|---|
| 1 | RVMD |
Revolution Medicines, Inc.
|
120,200 | $22,511,056 | |
| 2 | RYTM |
Rhythm Pharmaceuticals, Inc.
This page
|
42,100 | $4,674,363 |
All Filings in RYTM
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2 filing rows on record
| Report Date | Value (USD) | Shares | Type | Discretion | Filed | |
|---|---|---|---|---|---|---|
| 2026-06-30 | $4,674,363 | 42,100 | Shares | Sole | 2026-08-13 | |
| 2025-12-31 | $8,734,464 | 81,600 | Shares | Sole | 2026-02-10 | |
| No filing history on record for this holder in this stock. | ||||||