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Companies / Health Care / Rhythm Pharmaceuticals, Inc.
RYTM

Rhythm Pharmaceuticals, Inc.

Health CarePharmaceutical Preparations
Ticker RYTMBOSTON, MAFiscal year ends DecemberBook value per share $1.51Diluted shares 68.3M

Rhythm Pharmaceuticals, Inc. (Nasdaq: RYTM) is a global commercial-stage biopharmaceutical company developing medicines for rare neuroendocrine diseases, with a focus on melanocortin-4 receptor (MC4R) pathway disorders that can cause severe obesity and insatiable hunger. Its marketed product, IMCIVREE (setmelanotide),… From the company’s description.

In fiscal 2025, Rhythm Pharmaceuticals, Inc. reported revenue of $189.76M, up 45.8% from fiscal 2024, and a net loss of $196.54M. Its operating margin was −101.2%, and operations used $115.67M in cash. Over the twelve months to Jun 30, 2026, revenue was $239.92M.

Fiscal year 2025 · ends 12-31Changes are against fiscal 2024The amber dot is the latest twelve months, to 2026-06-30
Sales & profitability
$189.76MFY2025
+45.8% year over year
Last 12 mo $239.92M
-101.19%FY2025
+102.8 percentage points
Last 12 mo -83.62%
$-196.54MFY2025
+24.6% year over year
Last 12 mo $-205.35M
-141.32%FY2025
+1058 percentage points
Last 12 mo -199.40%
Cash & financing
$-115.67MFY2025
−1.6% year over year
Last 12 mo $-105.35M
$-116.63MFY2025
−2.4% year over year
Last 12 mo $-105.35M
0.78FY2025
Was 5.05× a year earlier
Last 12 mo 1.03
65.0MFY2025
+6.5% year over year
Last 12 mo 68.3M

Margins and return on equity change in ; everything else in percent. Fewer shares and less debt are shown plainly, not as bad news — it depends what you make of buybacks. Dotted labels explain each measure. is shown separately from the annual figures.

What Rhythm Pharmaceuticals, Inc. does

In the company’s own words

Rhythm Pharmaceuticals, Inc. (Nasdaq: RYTM) is a global commercial-stage biopharmaceutical company developing medicines for rare neuroendocrine diseases, with a focus on melanocortin-4 receptor (MC4R) pathway disorders that can cause severe obesity and insatiable hunger. Its marketed product, IMCIVREE (setmelanotide), is approved in the United States and several other markets for certain genetic forms of obesity, including Bardet-Biedl syndrome and deficiencies involving POMC, PCSK1 or LEPR. The company is also developing setmelanotide for additional conditions, including hypothalamic obesity and Prader-Willi syndrome, and has two investigational MC4R agonists: oral bivamelagon and weekly injectable RM-718. Its customers and intended beneficiaries include patients with these rare diseases and the healthcare providers who treat them. Rhythm’s business centers on its MC4R agonist programs; the company does not describe separate reportable business segments in the supplied text. It had 414 employees as of February 1, 2026, including 126 outside North America.

Company details
Sector
Health Care
Industry (SIC)
Pharmaceutical Preparations
Headquarters
BOSTON, MA
Fiscal year end
December
CIK
1649904
SIC
2834

Financial performance, year by year

Fiscal 2017–2025 · USD
$-310.65M$-160.50M$-10.34M$139.81M$289.97M201720182019202020212022202320242025Last 12 moLast 12 monthsLast 12 months

The full income statement, balance sheet and cash flow for each of these years — every figure traceable to its filing — is on the Financials tab with a free account.

Ownership

Who owns Rhythm Pharmaceuticals, Inc. — and what changed

Funds as of 2026Q2 · superinvestors as of 2026-06-30

330
funds hold it
1 of 35
superinvestors hold it
$3.00B
held by funds, at market
43.5%
of shares held by funds

Superinvestors in Rhythm Pharmaceuticals, Inc. · what they did last quarter

Stanley DruckenmillerNEW
Duquesne Family Office
0.5%of 13F portfolio

Share of each manager’s reported 13F portfolio. Change is in shares held, since the previous quarter.

Largest fund holders · Rhythm Pharmaceuticals, Inc.’s weight in each

VANGUARD TOTAL STOCK MARKET INDEX FUND
VTI · VANGUARD INDEX FUNDS
0.01%of fund net assets
0.20%of fund net assets
VANGUARD SMALL-CAP INDEX FUND
VB · VANGUARD INDEX FUNDS
0.09%of fund net assets
PRIMECAP Odyssey Aggressive Growth Fund
POAGX · PRIMECAP Odyssey Funds
—of fund net assets
iShares Russell 2000 ETF
IWM · iShares Trust
0.19%of fund net assets

Fund ownership is a floor, not a census — pensions, insurers and people holding shares directly are not visible here.

Fund ownership counts N-PORT filers only, so it is a floor rather than a census — pensions, insurers and direct holders are not visible here, and the remainder is not “held by individuals”.

Fund ownership is a subset of institutional 13F ownership — the two describe overlapping populations and must not be added together.

Every fund and institutional holder, quarter by quarter, is on the Ownership tab with a free account.

Connected research

Put this business in context.

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