Security record · archived quarter
RYTM
Rhythm Pharmaceuticals, Inc. · Healthcare · Biotechnology
109Tracked holders
+6Δ holders
41.83MShares held
$3.64BReported value
+11New positions
−6Exits
Momentum inputs (comparable managers):
holder breadth +5.8% ·
share flow +4.7% ·
net new positions +4.6%
· formula
Broad accumulation: rising shares across more holders
All ownership figures: tracked 13F managers only, common-stock positions, reporting period Q1 2026
Ownership over time
| Quarter | Holders | Δ | Shares | Reported value | New | Exits |
|---|---|---|---|---|---|---|
| Q2 2026 | 112 | +7 | 44.38M | $4.90B | +14 | −8 |
| Q1 2026 | 109 | +6 | 41.83M | $3.64B | +11 | −6 |
| Q4 2025 | 102 | 0 | 43.14M | $4.62B | +3 | −2 |
| Q3 2025 | 20 | +1 | 28.88M | $2.92B | +2 | −2 |
| Q2 2025 | 17 | 0 | 22.96M | $1.45B | +1 | −1 |
| Q1 2025 | 14 | +2 | 11.52M | $610.22M | +2 | n/a |
| Q4 2024 | 12 | 0 | 11.40M | $638.39M | n/a | n/a |
| Q3 2024 | 11 | +3 | 9.71M | $508.75M | +3 | n/a |
| Q2 2024 | 8 | n/a | 9.56M | $392.54M | n/a | n/a |
Who holds it · Q1 2026
| # | Manager | Shares | Δ shares | Value | Their weight | Held | ||
|---|---|---|---|---|---|---|---|---|
| 1 | BlackRock ✦ (passive) | 6.24M | -1.0% | $542.45M | 0.0% | ▼ Trim | 4 | SEC ↗ ×16 |
| 2 | PRIMECAP Management ✦ | 3.42M | -1.8% | $297.22M | 0.2% | ▼ Trim | 8 | SEC ↗ |
| 3 | Vanguard Capital Management Llc | 2.97M | n/a | $258.11M | 0.0% | n/c | 1 | SEC ↗ |
| 4 | State Street Global Advisors ✦ (passive) | 2.27M | +3.3% | $197.58M | 0.0% | ▲ Add | 6 | SEC ↗ |
| 5 | Goldman Sachs Group ✦ | 1.97M | +7.3% | $170.93M | 0.0% | ▲ Add | 3 | SEC ↗ ×2 |
| 6 | Fidelity (FMR) ✦ | 1.69M | -1.0% | $146.95M | 0.0% | ▼ Trim | 4 | SEC ↗ ×4 |
| 7 | T. Rowe Price ✦ | 1.65M | +6.0% | $143.93M | 0.0% | ▲ Add | 8 | SEC ↗ ×2 |
| 8 | Citadel Advisors ✦ | 1.42M | +825.2% | $123.38M | 0.1% | ▲ Add | 3 | SEC ↗ ×2 |
| 9 | Geode Capital Management ✦ (passive) | 1.42M | +3.0% | $123.20M | 0.0% | ▲ Add | 8 | SEC ↗ ×2 |
| 10 | JPMorgan Chase ✦ | 1.55M | +9.1% | $120.02M | 0.0% | ▲ Add | 3 | SEC ↗ ×6 |
| 11 | Federated Hermes, Inc. | 1.29M | -20.8% | $111.87M | 0.2% | ▼ Trim | 2 | SEC ↗ ×3 |
| 12 | Alliancebernstein L.P. | 910.41K | -2.1% | $97.45M | 0.0% | ▼ Trim | 2 | SEC ↗ |
| 13 | Capital Research Global Investors | 1.12M | +13.2% | $97.01M | 0.0% | ▲ Add | 2 | SEC ↗ |
| 14 | Janus Henderson Group Plc | 918.15K | -18.5% | $79.89M | 0.0% | ▼ Trim | 2 | SEC ↗ ×2 |
| 15 | Point72 Asset Management ✦ | 846.80K | +97.2% | $73.65M | 0.1% | ▲ Add | 2 | SEC ↗ |
| 16 | Adage Capital Partners ✦ | 725.74K | +16.8% | $63.12M | 0.1% | ▲ Add | 4 | SEC ↗ |
| 17 | Morgan Stanley ✦ | 703.98K | +8.1% | $61.23M | 0.0% | ▲ Add | 3 | SEC ↗ ×8 |
| 18 | Pictet Asset Management Holding SA | 667.05K | +8.5% | $57.33M | 0.1% | ▲ Add | 2 | SEC ↗ |
| 19 | Bank Of America Corp /De/ | 628.67K | +180.1% | $54.68M | 0.0% | ▲ Add | 2 | SEC ↗ ×5 |
| 20 | Franklin Resources Inc | 626.85K | -9.9% | $54.52M | 0.0% | ▼ Trim | 2 | SEC ↗ ×6 |
| 21 | Clearbridge Investments, LLC | 609.44K | +20.4% | $53.00M | 0.0% | ▲ Add | 2 | SEC ↗ |
| 22 | UBS AM, a distinct business unit of… | 541.45K | -1.4% | $47.09M | 0.0% | ▼ Trim | 2 | SEC ↗ ×8 |
| 23 | Charles Schwab Investment… | 526.46K | -1.1% | $45.79M | 0.0% | ▼ Trim | 2 | SEC ↗ |
| 24 | Northern Trust Corp | 498.51K | +2.1% | $43.36M | 0.0% | ▲ Add | 2 | SEC ↗ ×5 |
| 25 | Loomis Sayles & Co L P | 465.10K | -7.7% | $40.45M | 0.1% | ▼ Trim | 2 | SEC ↗ ×2 |
| 26 | Millennium Management ✦ | 451.82K | +142.0% | $39.30M | 0.0% | ▲ Add | 7 | SEC ↗ |
| 27 | Artisan Partners Limited Partnership | 390.67K | +48.2% | $33.98M | 0.1% | ▲ Add | 2 | SEC ↗ |
| 28 | Ameriprise Financial Inc | 383.96K | +47.0% | $33.39M | 0.0% | ▲ Add | 2 | SEC ↗ ×5 |
| 29 | Invesco Ltd. | 364.31K | +25.1% | $31.68M | 0.0% | ▲ Add | 2 | SEC ↗ ×5 |
| 30 | Bank of New York Mellon Corp | 293.30K | -2.6% | $25.51M | 0.0% | ▼ Trim | 2 | SEC ↗ ×11 |
| 31 | Qube Research & Technologies Ltd | 277.94K | -10.6% | $24.17M | 0.0% | ▼ Trim | 2 | SEC ↗ |
| 32 | Wellington Management ✦ | 273.76K | +9.4% | $23.81M | 0.0% | ▲ Add | 8 | SEC ↗ ×7 |
| 33 | Squarepoint Ops LLC | 262.97K | +701.0% | $22.87M | 0.0% | ▲ Add | 2 | SEC ↗ |
| 34 | Renaissance Technologies ✦ | 258.01K | -24.4% | $22.44M | 0.0% | ▼ Trim | 5 | SEC ↗ |
| 35 | Bnp Paribas Financial Markets | 247.88K | +50.6% | $21.56M | 0.0% | ▲ Add | 2 | SEC ↗ |
| 36 | Voya Investment Management Llc | 233.81K | -6.4% | $20.33M | 0.0% | ▼ Trim | 2 | SEC ↗ ×3 |
| 37 | UBS Group AG | 231.65K | -45.8% | $20.15M | 0.0% | ▼ Trim | 2 | SEC ↗ ×3 |
| 38 | Connor, Clark & Lunn Investment… | 151.84K | +1.6% | $13.21M | 0.0% | ▲ Add | 2 | SEC ↗ |
| 39 | Deutsche Bank Ag\ | 141.60K | +9.7% | $12.32M | 0.0% | ▲ Add | 2 | SEC ↗ ×3 |
| 40 | New York State Common Retirement… | 125.21K | +33.7% | $10.89M | 0.0% | ▲ Add | 2 | SEC ↗ |
| 41 | Nuveen, LLC | 117.38K | +1.2% | $10.21M | 0.0% | ▲ Add | 2 | SEC ↗ ×2 |
| 42 | Schroder Investment Management Group | 131.67K | n/a | $10.17M | 0.0% | n/c | 1 | SEC ↗ ×2 |
| 43 | Russell Investments Group, Ltd. | 115.71K | -13.8% | $10.06M | 0.0% | ▼ Trim | 2 | SEC ↗ ×6 |
| 44 | Capital World Investors ✦ | 115.69K | 0.0% | $10.06M | 0.0% | Held | 2 | SEC ↗ |
| 45 | Swiss National Bank | 112.20K | +0.8% | $9.76M | 0.0% | ▲ Add | 2 | SEC ↗ |
| 46 | First Trust Advisors Lp | 85.51K | -3.4% | $7.44M | 0.0% | ▼ Trim | 2 | SEC ↗ |
| 47 | Aberdeen Group plc | 79.36K | New | $6.90M | 0.0% | New | 1 | SEC ↗ |
| 48 | Neuberger Berman Group LLC | 73.43K | -0.2% | $6.39M | 0.0% | ▼ Trim | 2 | SEC ↗ ×2 |
| 49 | Wcm Investment Management, Llc | 80.62K | +79.9% | $6.23M | 0.0% | ▲ Add | 2 | SEC ↗ |
| 50 | Rhumbline Advisers | 69.86K | -1.9% | $6.08M | 0.0% | ▼ Trim | 2 | SEC ↗ |
| 51 | California State Teachers… | 65.81K | +22.9% | $5.72M | 0.0% | ▲ Add | 2 | SEC ↗ |
| 52 | Universal- Beteiligungs- und… | 62.94K | -49.0% | $5.47M | 0.0% | ▼ Trim | 2 | SEC ↗ |
| 53 | AQR Capital Management ✦ | 59.28K | -15.4% | $5.16M | 0.0% | ▼ Trim | 8 | SEC ↗ ×6 |
| 54 | Balyasny Asset Management L.P. | 52.97K | -26.7% | $4.61M | 0.0% | ▼ Trim | 2 | SEC ↗ |
| 55 | Susquehanna International Group, Llp | 50.78K | +1139.5% | $4.42M | 0.0% | ▲ Add | 2 | SEC ↗ |
| 56 | Manufacturers Life Insurance… | 50.77K | -14.8% | $4.42M | 0.0% | ▼ Trim | 2 | SEC ↗ |
| 57 | Raymond James Financial Inc | 49.92K | +21.4% | $4.34M | 0.0% | ▲ Add | 2 | SEC ↗ ×3 |
| 58 | Legal & General Group Plc | 47.03K | -14.6% | $4.09M | 0.0% | ▼ Trim | 2 | SEC ↗ ×3 |
| 59 | BNP Paribas Asset Management… | 43.87K | +1716.7% | $3.82M | 0.0% | ▲ Add | 2 | SEC ↗ ×2 |
| 60 | Sei Investments Co | 40.69K | +8.7% | $3.54M | 0.0% | ▲ Add | 2 | SEC ↗ ×2 |
| 61 | Td Asset Management Inc | 38.78K | -29.6% | $3.37M | 0.0% | ▼ Trim | 2 | SEC ↗ |
| 62 | State Of Wisconsin Investment Board | 36.57K | +1.4% | $3.18M | 0.0% | ▲ Add | 2 | SEC ↗ |
| 63 | MIRAE ASSET GLOBAL ETFS HOLDINGS… | 34.68K | -0.6% | $2.98M | 0.0% | ▼ Trim | 2 | SEC ↗ ×2 |
| 64 | Wells Fargo & Company/Mn | 34.11K | -53.0% | $2.97M | 0.0% | ▼ Trim | 2 | SEC ↗ ×3 |
| 65 | Lazard Asset Management Llc | 32.89K | +28.6% | $2.86M | 0.0% | ▲ Add | 2 | SEC ↗ |
| 66 | D. E. Shaw & Co. ✦ | 32.65K | +4.1% | $2.84M | 0.0% | ▲ Add | 7 | SEC ↗ ×2 |
| 67 | Alyeska Investment Group, L.P. | 32.59K | New | $2.83M | 0.0% | New | 1 | SEC ↗ |
| 68 | Prudential Financial Inc | 30.19K | -43.2% | $2.63M | 0.0% | ▼ Trim | 2 | SEC ↗ ×3 |
| 69 | Creative Planning | 21.09K | -16.4% | $1.83M | 0.0% | ▼ Trim | 2 | SEC ↗ |
| 70 | Victory Capital Management Inc | 20.50K | -54.8% | $1.78M | 0.0% | ▼ Trim | 2 | SEC ↗ |
| 71 | Tudor Investment Corp Et Al | 19.65K | New | $1.71M | 0.0% | New | 1 | SEC ↗ |
| 72 | Dimensional Fund Advisors Lp | 19.15K | -40.2% | $1.67M | 0.0% | ▼ Trim | 2 | SEC ↗ |
| 73 | Captrust Financial Advisors | 18.15K | -1.0% | $1.58M | 0.0% | ▼ Trim | 2 | SEC ↗ |
| 74 | Zurcher Kantonalbank (Zurich… | 15.60K | +25.4% | $1.36M | 0.0% | ▲ Add | 2 | SEC ↗ |
| 75 | State Board Of Administration Of… | 14.65K | 0.0% | $1.27M | 0.0% | Held | 2 | SEC ↗ |
| 76 | Hsbc Holdings Plc | 14.31K | New | $1.22M | 0.0% | New | 1 | SEC ↗ ×3 |
| 77 | Stifel Financial Corp | 12.34K | -6.8% | $1.07M | 0.0% | ▼ Trim | 2 | SEC ↗ ×2 |
| 78 | Citigroup Inc | 12.34K | -3.0% | $1.07M | 0.0% | ▼ Trim | 2 | SEC ↗ ×2 |
| 79 | ProShare Advisors LLC | 10.72K | -15.1% | $932,316 | 0.0% | ▼ Trim | 2 | SEC ↗ |
| 80 | Barclays Plc | 10.65K | -91.9% | $926,404 | 0.0% | ▼ Trim | 2 | SEC ↗ ×4 |
| 81 | Marshall Wace ✦ | 9.63K | New | $837,347 | 0.0% | New | 1 | SEC ↗ |
| 82 | HighTower Advisors, LLC | 9.06K | New | $787,774 | 0.0% | New | 1 | SEC ↗ |
| 83 | Pnc Financial Services Group, Inc. | 6.94K | +48.9% | $603,398 | 0.0% | ▲ Add | 2 | SEC ↗ ×4 |
| 84 | IMC-Chicago, LLC | 6.70K | New | $582,438 | 0.0% | New | 1 | SEC ↗ |
| 85 | LPL Financial LLC | 6.20K | +14.2% | $539,040 | 0.0% | ▲ Add | 2 | SEC ↗ |
| 86 | Principal Financial Group Inc | 5.64K | -9.1% | $490,250 | 0.0% | ▼ Trim | 2 | SEC ↗ ×2 |
| 87 | Fifth Third Bancorp | 5.26K | New | $457,474 | 0.0% | New | 1 | SEC ↗ |
| 88 | Gotham Asset Management ✦ | 4.85K | -0.1% | $421,631 | 0.0% | ▼ Trim | 8 | SEC ↗ |
| 89 | Rockefeller Capital Management L.P. | 4.84K | -58.9% | $421,282 | 0.0% | ▼ Trim | 2 | SEC ↗ ×3 |
| 90 | Two Sigma Investments ✦ | 4.30K | New | $373,971 | 0.0% | New | 1 | SEC ↗ |
| 91 | Jones Financial Companies Lllp | 4.92K | +2029.0% | $372,883 | 0.0% | ▲ Add | 2 | SEC ↗ |
| 92 | Man Group plc | 4.02K | -57.9% | $349,793 | 0.0% | ▼ Trim | 2 | SEC ↗ |
| 93 | Amundi | 4.02K | New | $349,359 | 0.0% | New | 1 | SEC ↗ |
| 94 | Ensign Peak Advisors, Inc | 3.86K | 0.0% | $335,617 | 0.0% | Held | 2 | SEC ↗ |
| 95 | Quantinno Capital Management LP | 3.85K | +0.5% | $334,921 | 0.0% | ▲ Add | 2 | SEC ↗ |
| 96 | Bank Of Montreal /Can/ | 3.80K | New | $330,574 | 0.0% | New | 1 | SEC ↗ ×3 |
| 97 | Mirae Asset Global Investments Co.… | 3.56K | +9.8% | $309,787 | 0.0% | ▲ Add | 2 | SEC ↗ |
| 98 | Cerity Partners LLC | 3.21K | -12.2% | $279,609 | 0.0% | ▼ Trim | 2 | SEC ↗ ×3 |
| 99 | Allianz Asset Management GmbH | 3.00K | -62.5% | $260,910 | 0.0% | ▼ Trim | 2 | SEC ↗ |
| 100 | CIBC Asset Management Inc | 2.85K | 0.0% | $247,691 | 0.0% | Held | 2 | SEC ↗ |
“Their weight” = the position's share of that manager's reported 13F equity value: the conviction measure. ✦ = curated manager.
New buyers
| Aberdeen Group plc | $6.90M | 0.0% |
| Alyeska Investment Group, L.P. | $2.83M | 0.0% |
| Tudor Investment Corp Et Al | $1.71M | 0.0% |
| Hsbc Holdings Plc | $1.22M | 0.0% |
| Marshall Wace | $837,347 | 0.0% |
| HighTower Advisors, LLC | $787,774 | 0.0% |
| IMC-Chicago, LLC | $582,438 | 0.0% |
| Fifth Third Bancorp | $457,474 | 0.0% |
| Two Sigma Investments | $373,971 | 0.0% |
| Amundi | $349,359 | 0.0% |
| Bank Of Montreal /Can/ | $330,574 | 0.0% |
Exited
| Jennison Associates Llc | $98.32M | was 0.1% |
| Norges Bank | $7.09M | was 0.0% |
| Mackenzie Financial Corp | $468,607 | was 0.0% |
| Tidal Investments LLC | $357,085 | was 0.0% |
| Jane Street Group, Llc | $209,798 | was 0.0% |
| Daiwa Securities Group Inc. | $22,000 | was 0.0% |
Full-market context: across ALL 13F filers (SEC structured data, Q1 2026): 284 holders, 72.02M shares, $6.12B reported. This is a different, older period than the tracked-universe figures above and the two are never mixed.
Frequently co-owned
What else this security's tracked holders most often hold: shared-ownership counts, not fundamental relationships.
Open-market purchases (P)
No open-market insider purchases in our coverage window.
Open-market sales (S)
Sep 14
Meeker David P
Officer, Director · 1.82K sh · $189,965
Sep 14
Meeker David P
Officer, Director · 8.70K sh · $899,634
Sep 14
Meeker David P
Officer, Director · 30.75K sh · $3.15M
Sep 14
Meeker David P
Officer, Director · 6.44K sh · $655,145
Sep 14
Meeker David P
Officer, Director · 2.30K sh · $241,937
Aug 31
Smith Hunter C
Officer · 11.51K sh · $1.21M
Aug 31
Smith Hunter C
Officer · 23.07K sh · $2.41M
Aug 31
Smith Hunter C
Officer · 28.19K sh · $2.99M
Aug 13
Garfield Alastair
Officer · 2.01K sh · $233,031
Aug 13
Garfield Alastair
Officer · 1.56K sh · $182,170
Awards, exercises and tax withholding are never counted as buys or sales here. Methodology
Oct 13
SC 13G: JPMORGAN CHASE & CO
Provenance: Ownership from parsed 13F common-stock positions (tracked universe, comparable sets for changes); insider rows from Forms 3/4/5; stakes from Schedules 13D/13G; every filing links to its original on SEC EDGAR.
Reporting period: Q1 2026 ·
Methodology ·
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