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Of the 16 tracked institutions holding RYTM, 8 have a 3-year clone track record — 8 of them beat the S&P. Average holder's clone alpha: +5.5pt. It's a gauge of who owns the name, not just how many.
Among the 16 tracked institutional investors we monitor, RYTM (RHYTHM PHARMACEUTICALS INC) is held with a combined value of $3.21B across 35,490,129 shares. The largest holder is VANGUARD GROUP INC with a position worth $664.82M. 9 funds increased their holdings. 5 funds reduced their position.
Total Institutional Value
$3.21B
Total Shares Held
35,490,129
Institutional Holders
16
Ranked by estimated dollars moved (share change × implied price). 13F data lags up to 45 days.
| # | Fund | Value↓ | Portfolio % | Change |
|---|---|---|---|---|
| 1 | VANGUARD GROUP INC | $664.82M | 0.01% | +24.3% |
| 2 | RA CAPITAL MANAGEMENT, L.P. | $579.81M | 6.14% | - |
| 3 | BlackRock, Inc. | $542.45M | 0.01% | -1.0% |
| 4 | BAKER BROS. ADVISORS LP | $487.42M | 2.80% | - |
| 5 | STATE STREET CORP | $197.58M | 0.01% | +3.3% |
| 6 | FMR LLC | $146.95M | 0.01% | -1.0% |
| 7 | PRICE T ROWE ASSOCIATES INC /MD/ | $143.93M | 0.02% | +6.0% |
| 8 | CITADEL ADVISORS LLC | $123.38M | 0.09% | +825.3% |
| 9 | Capital Research Global Investors | $97.01M | 0.02% | +13.2% |
| 10 | Point72 Asset Management, L.P. | $73.65M | 0.13% | +97.2% |
As of the latest SEC 13F filings, VANGUARD GROUP INC is the largest institutional holder of RYTM with a position worth $664.82M, representing 0.01% of their portfolio. In total, 16 institutional investors hold RYTM with a combined value of $3.21B.
Institutional investors hold $3.21B worth of RYTM stock across 16 positions. The largest institutional holder is VANGUARD GROUP INC with $664.82M in holdings.
A 13F filing is a quarterly report required by the SEC from institutional investment managers with over $100 million in assets. It discloses their holdings in U.S. equities. For RYTM, these filings reveal which major funds are accumulating or reducing positions, providing insights into institutional sentiment.
Get notified when hedge funds change their RYTM positions.
Alpha = the manager's 3-year clone return minus the S&P 500. A skilled roster is a stronger tell than a crowded one — though even skilled managers' edge doesn't reliably survive the 13F disclosure lag. Why →
Last Close
$102.10
2026-07-24
YTD
-2.8%
63% of 52-week range
