Rhythm Pharmaceuticals, Inc. (RYTM): Ownership & Insider Activity
Hedge funds and institutional managers reporting a position in RYTM · Health Care. Based on the most recent 13F filing from each holder, sourced from SEC EDGAR.
Reported Holders
28
13F filers
Aggregate Value
$1.6B
Across holders
Last Price
$111.44
2026-08-24
Sector
Health Care
GICS
Quarterly fund activity14 increased12 reduced3 exited
| Manager⇅ | Type⇅ | Shares⇅ | Market Value▼ | % of Total⇅ | % of Portfolio⇅ | Action⇅ | QoQ Change⇅ | Quarter⇅ |
|---|---|---|---|---|---|---|---|---|
| BAKER BROS. ADVISORS LP CIK 0001263508 | Hedge Fund | 5.60M | $622.3M | 39.6% | 3.1% | Unchanged | +$0 | Q2 2026 |
| PRIMECAP MANAGEMENT CO/CA/ CIK 0000763212 | Institutional Manager | 3.17M | $351.8M | 22.4% | 0.2% | Reduced | $-27.6M | Q2 2026 |
| CITADEL ADVISORS LLC CIK 0001423053 | Hedge Fund | 1.26M | $140.3M | 8.9% | 0.0% | Reduced | +$136.9M | Q2 2026 |
| Woodline Partners LP CIK 0001784547 | Hedge Fund | 759K | $84.3M | 5.4% | 0.3% | Unchanged | +$0 | Q2 2026 |
| Clearbridge Investments, LLC CIK 0001348883 | Hedge Fund | 696K | $77.3M | 4.9% | 0.1% | Added | +$9.7M | Q2 2026 |
| Squarepoint Ops LLC CIK 0001642575 | Hedge Fund | 423K | $47.0M | 3.0% | 0.1% | Added | +$17.8M | Q2 2026 |
| Point72 Asset Management, L.P. CIK 0001603466 | Hedge Fund | 414K | $46.0M | 2.9% | 0.1% | Reduced | $-48.0M | Q2 2026 |
| ADAGE CAPITAL PARTNERS GP, L.L.C. CIK 0001165408 | Hedge Fund | 397K | $44.1M | 2.8% | 0.1% | Reduced | $-36.5M | Q2 2026 |
| ORBIMED ADVISORS LLC CIK 0001055951 | Hedge Fund | 323K | $35.9M | 2.3% | 0.7% | Added | +$977K | Q2 2026 |
| MILLENNIUM MANAGEMENT LLC CIK 0001273087 | Hedge Fund | 317K | $35.2M | 2.2% | 0.0% | Reduced | $-15.0M | Q2 2026 |
Unchanged
Hedge Fund
$622.3M· 39.6% of total· 3.1% port· 5.60M sh· +$0 QoQ· Q2 2026
Reduced
Institutional Manager
$351.8M· 22.4% of total· 0.2% port· 3.17M sh· $-27.6M QoQ· Q2 2026
Reduced
Hedge Fund
$140.3M· 8.9% of total· 0.0% port· 1.26M sh· +$136.9M QoQ· Q2 2026
Unchanged
Hedge Fund
$84.3M· 5.4% of total· 0.3% port· 759K sh· +$0 QoQ· Q2 2026
Added
Hedge Fund
$77.3M· 4.9% of total· 0.1% port· 696K sh· +$9.7M QoQ· Q2 2026
Added
Hedge Fund
$47.0M· 3.0% of total· 0.1% port· 423K sh· +$17.8M QoQ· Q2 2026
Reduced
Hedge Fund
$46.0M· 2.9% of total· 0.1% port· 414K sh· $-48.0M QoQ· Q2 2026
Reduced
Hedge Fund
$44.1M· 2.8% of total· 0.1% port· 397K sh· $-36.5M QoQ· Q2 2026
Added
Hedge Fund
$35.9M· 2.3% of total· 0.7% port· 323K sh· +$977K QoQ· Q2 2026
Reduced
Hedge Fund
$35.2M· 2.2% of total· 0.0% port· 317K sh· $-15.0M QoQ· Q2 2026
Added
Family Office
$22.6M· 1.4% of total· 0.4% port· 204K sh· — QoQ· Q2 2026
Reduced
Hedge Fund
$14.9M· 1.0% of total· 0.0% port· 134K sh· $-15.9M QoQ· Q2 2026
Reduced
Hedge Fund
$9.6M· 0.6% of total· 0.1% port· 87K sh· $-541K QoQ· Q2 2026
Reduced
Hedge Fund
$7.6M· 0.5% of total· 0.0% port· 68K sh· $-21.1M QoQ· Q2 2026
Added
Hedge Fund
$6.8M· 0.4% of total· 0.0% port· 61K sh· — QoQ· Q2 2026
Reduced
Hedge Fund
$6.6M· 0.4% of total· 0.0% port· 59K sh· +$6.4M QoQ· Q2 2026
Added
Hedge Fund
$5.6M· 0.4% of total· 0.0% port· 51K sh· +$4.7M QoQ· Q2 2026
Reduced
Hedge Fund
$3.3M· 0.2% of total· 0.0% port· 30K sh· $-155K QoQ· Q2 2026
Added
Hedge Fund
$3.2M· 0.2% of total· 0.0% port· 29K sh· — QoQ· Q2 2026
Reduced
Hedge Fund
$1.5M· 0.1% of total· 0.0% port· 14K sh· $-640K QoQ· Q2 2026
Reduced
Hedge Fund
$908K· 0.1% of total· 0.0% port· 8K sh· $-161K QoQ· Q2 2026
Added
Hedge Fund
$666K· 0.0% of total· 0.0% port· 6K sh· — QoQ· Q2 2026
Added
Hedge Fund
$660K· 0.0% of total· 0.0% port· 6K sh· $-689K QoQ· Q2 2026
Added
Hedge Fund
$612K· 0.0% of total· 0.0% port· 6K sh· +$74K QoQ· Q2 2026
Added
Hedge Fund
$556K· 0.0% of total· 0.1% port· 5K sh· — QoQ· Q2 2026
Added
Hedge Fund
$511K· 0.0% of total· 0.0% port· 5K sh· +$33K QoQ· Q2 2026
Added
Hedge Fund
$434K· 0.0% of total· 0.0% port· 4K sh· — QoQ· Q2 2026
Added
Hedge Fund
$334K· 0.0% of total· 0.0% port· 3K sh· — QoQ· Q2 2026
1–10 of 28
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