Ticker · CUSIP 76243J105

RYTM

RHYTHM PHARMACEUTICALS INC
···Share
Holders (tracked)
10
Combined shares
3,127,162
Combined value
$334.73M
Last close
$88.69
Quarter
2025Q4
Price · 1Y$88.69+26.95 (+43.65%)H $117.62 · L $56.79 · Avg Vol 733K
$60.00$80.00$100.00$120.00VolJul 25Oct 25Jan 26Apr 26
Tracked holders · last 8 quarters
Flat over the last 8 quarters.
10102024Q12025Q4
Price is -17.1% vs the avg quarter-end implied price across tracked holders.

SEC event timeline

19 events
  1. +27,771 shares · 2025Q4
    Position
  2. +20,696 shares · 2025Q4
    Position
  3. +53,548 shares · 2025Q4
    Position
  4. +160,950 shares · 2025Q4
    Position
  5. +225,679 shares · 2025Q4
    Position
  6. −9,734 shares · 2025Q4
    Position
  7. +429,420 shares · 2025Q4
    Position
  8. −205,400 shares · 2025Q4
    Position
  9. +66,213 shares · 2025Q4
    Position
  10. −4,272 shares · 2025Q3
    Position
  11. +30,740 shares · 2025Q3
    Position
  12. −64,949 shares · 2025Q3
    Position
  13. −170,832 shares · 2025Q3
    Position
  14. −20,693 shares · 2025Q3
    Position
  15. +58,505 shares · 2025Q3
    Position
  16. +2,052 shares · 2025Q3
    Position
  17. +231,700 shares · 2025Q3
    Position
  18. −207,389 shares · 2025Q3
    Position
  19. +23,038 shares · 2024Q3
    Position

Insider activity

No insider transactions in the last 30 days.
Follow-the-investor returns
If you'd copied each holder of RYTM…
Cost basis inferred from each manager's quarter-over-quarter position changes. Sorted by % return on the position they're still holding.
InvestorFirst inCost basisReturnPosition value today
Norges Bank (Norway SWF)2017Q4$48.92+81.3%$5.9M
T. Rowe Price2017Q4$55.87+58.8%$138.4M
AQR Capital Management2021Q3$69.90+26.9%$6.2M
Renaissance Technologies2019Q3$78.13+13.5%$30.3M
Steve Cohen (Point72)2017Q4$87.80+1.0%$38.1M
Wellington Management2017Q4$99.94-11.3%$22.2M
D.E. Shaw & Co.2018Q2$100.89-12.1%$2.8M
Izzy Englander (Millennium Mgmt)2018Q2$100.98-12.2%$16.6M
Ken Griffin (Citadel Advisors)2017Q4$106.74-16.9%$13.6M
Ken Griffin (Citadel Advisors)2017Q4$106.74-16.9%$13.6M

Who moved on this name in 2025Q4

Position changes reported for the latest quarter, grouped by direction.
New positions2
Trimmed2
Exited0

Institutional ownership over time

Distinct super-investors holding this ticker · combined dollar value, by quarter.
QuarterHoldersCombined value
2022Q1
10
$50.3M
2022Q2
8
$9.6M
2022Q3
8
$105.0M
2022Q4
8
$127.0M
2023Q1
11
$96.8M
2023Q2
8
$113.2M
2023Q3
11
$157.0M
2023Q4
8
$330.1M
2024Q1
10
$322.5M
2024Q2
7
$315.3M
2024Q3
9
$46.2M
2024Q4
9
$65.3M
2025Q1
12
$95.0M
2025Q2
12
$150.9M
2025Q3
10
$242.4M
2025Q4
10
$334.7M

Who owns RYTM

10 super-investors · 2025Q4
Tracked stake
3.13M
shares
Combined value
$335M
% of shares outstanding
shares-out unknown
Quarter action mix
New2Added6Trim2
#ManagerSharesValue
1T. Rowe Price1.56M$167M
2Steve Cohen
Point72
429.4K$46M
3Renaissance Technologies341.2K$37M
4Wellington Management250.2K$27M
5Izzy Englander
Millennium Mgmt
186.7K$20M
6Ken Griffin
Citadel Advisors
153.3K$16M
7AQR Capital Management70.0K$7M
8Norges Bank
Norway SWF
66.2K$7M
9Ken Griffin
Citadel Advisors
37.9K$4M
10D.E. Shaw & Co.31.4K$3M

Recent moves

20 transactions
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