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Rhythm Pharmaceuticals Ownership | Who Owns Rhythm Pharmaceuticals?

OverviewForecastRevenueFinancialsChartTranscripts

Rhythm Pharmaceuticals Ownership Summary

Rhythm Pharmaceuticals is owned by 114.32% institutional investors, 0.77% insiders. Blackrock is the largest institutional shareholder, holding 11.21% of RYTM shares. Vanguard Morn Total Stk Mkt Idx Investor is the top mutual fund, with 3.18% of its assets in Rhythm Pharmaceuticals shares.

RYTM Ownership Benchmark

TypeName% Inst% Insiders% Retail
StockRhythm Pharmaceuticals114.32%0.77%-15.09%
SectorHealthcare Stocks 50.50%12.33%37.17%
IndustryBiotech Stocks 49.09%12.06%38.85%

Institutional Shareholders

Top Institutional Shareholders by Total Shares

HolderShares% HoldingValue
Blackrock6.74M11.21%$276.82M
Ra capital management6.67M9.81%$740.22M
Vanguard group6.21M9.65%$664.82M
Blackrock funding, inc. /de6.16M9.06%$683.60M
Baker bros. advisors lp5.60M8.24%$622.27M
Primecap management co/ca/3.17M4.66%$351.84M
Vanguard capital management3.01M4.42%$333.75M
Jpmorgan chase2.65M3.90%$292.18M
Perceptive advisors2.59M3.80%$287.16M
State street2.57M3.79%$285.73M

Top Institutional Shareholders by % of Total Assets

HolderShares% AssetsValue
Checkpoint capital1.19M33.79%$131.68M
Ra capital management6.67M6.43%$740.22M
Perceptive advisors2.59M4.31%$287.16M
Nan fung group49.12K4.15%$5.45M
Rock springs capital management lp692.60K3.75%$76.90M
Silverarc capital management311.46K3.59%$34.58M
Baker bros. advisors lp5.60M3.12%$622.27M
Siren1.14M2.55%$126.16M
Integral health asset management550.00K2.41%$61.07M
Sofinnova investments408.03K2.34%$45.30M

Top Buyers

HolderShares% AssetsChange
Vanguard group6.21M0.01%1.21M
Jpmorgan chase2.65M0.02%1.10M
Price t rowe associates inc /md/2.57M0.03%911.29K
Norges bank685.84K0.01%685.84K
Sixth street partners management company552.74K0.01%552.74K

Top Sellers

HolderShares% AssetsChange
Nea management company---2.91M
Healthcare of ontario pension plan trust fund---1.11M
Jennison associates---918.57K
Frazier life sciences management---678.76K
Fmr1.03M0.00%-663.83K

New Positions

HolderShares% AssetsChangeValue
Norges bank685.84K0.01%685.84K$76.15M
Sixth street partners management company552.74K0.01%552.74K$61.37M
Duquesne family office203.62K0.43%203.62K$22.61M
Assenagon asset management186.49K0.03%186.49K$20.71M
Nomura157.30K0.01%157.30K$6.46M

Sold Out

HolderChange
Dunhill financial-1.00
Wealthspire advisors-1.00
Td private client wealth-1.00
Bay harbor wealth management-1.00
Rialto wealth management-1.00

Institutional Ownership Trends

DateHoldingsChange %SharesChange %OwnershipChange %Increased PositionChange %Decreased PositionChange %
Jun 30, 20263075.50%77,707,3585.62%1140.94%1693.05%998.79%
Mar 31, 2026182-35.69%32,508,228-55.40%480.38%101-36.88%54-41.30%
Dec 31, 202578-71.53%8,801,414-87.66%130.11%45-71.88%21-73.42%
Sep 30, 202584-63.48%10,580,828-83.50%160.16%42-65.85%29-60.27%
Jun 30, 2025236-0.42%66,529,0344.29%1041.02%124-3.88%767.04%

Top Mutual Funds Shareholders

HolderShares% HoldingChange
Vanguard Morn Total Stk Mkt Idx Investor2.18M3.18%-1.31K
Vanguard Total Stock Mkt Idx Inv2.18M3.18%-1.31K
Vanguard US Total Market Shares ETF1.92M3.03%2.33K
PRIMECAP Odyssey Aggressive Growth1.99M2.90%-136.12K
American Funds SMALLCAP World A1.71M2.49%587.12K
Polar Capital Biotech S Inc1.58M2.30%-59.69K
Vanguard Small Cap Index1.57M2.29%918.00
iShares Russell 2000 ETF1.39M2.03%-24.77K
State Street® SPDR® S&P® Biotech ETF1.14M1.66%2.62K
Federated Hermes Kaufmann Growth1.03M1.49%465.87K

Recent Insider Transactions

DateNameRoleActivityValue
Aug 13, 2026Shulman Joseph Chief Technical OfficerSell$608.21K
Aug 13, 2026Garfield Alastair Chief Scientific OfficerSell$402.17K
Aug 13, 2026Garfield Alastair Chief Scientific OfficerSell$182.17K
Aug 13, 2026Garfield Alastair Chief Scientific OfficerSell$233.03K
Aug 13, 2026Garfield Alastair Chief Scientific OfficerSell$95.34K

Insider Transactions Trends

DateBuySell
2026 Q3-12
2026 Q2-2
2026 Q1-24
2025 Q4-9
2025 Q3-19

RYTM Ownership FAQ

Who Owns Rhythm Pharmaceuticals?

Rhythm Pharmaceuticals shareholders are primarily institutional investors at 114.32%, followed by 0.77% insiders and -15.09% retail investors. The average institutional ownership in Rhythm Pharmaceuticals's industry, Biotech Stocks , is 49.09%, which Rhythm Pharmaceuticals exceeds.

Who owns the most shares of Rhythm Pharmaceuticals?

Rhythm Pharmaceuticals’s largest shareholders are Blackrock (6.74M shares, 11.21%), Ra capital management (6.67M shares, 9.81%), and Vanguard group (6.21M shares, 9.65%). Together, they hold 30.67% of Rhythm Pharmaceuticals’s total shares outstanding.

Does Blackrock own Rhythm Pharmaceuticals?

Yes, BlackRock owns 11.21% of Rhythm Pharmaceuticals, totaling 6.74M shares as of Jun 2024. This represents 0.01% of BlackRock's total assets, with a market value of 276.82M$. In the last quarter, BlackRock increased its holdings by 212.28K shares, a 3.25% change.

Who is Rhythm Pharmaceuticals’s biggest shareholder by percentage of total assets invested?

Checkpoint capital is Rhythm Pharmaceuticals’s biggest shareholder by percentage of total assets invested, with 33.79% of its assets in 1.19M Rhythm Pharmaceuticals shares, valued at 131.68M$.

Who is the top mutual fund holder of Rhythm Pharmaceuticals shares?

Vanguard Morn Total Stk Mkt Idx Investor is the top mutual fund holder of Rhythm Pharmaceuticals shares, with 3.18% of its total shares outstanding invested in 2.18M Rhythm Pharmaceuticals shares.

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