RNA — Avidity Biosciences Inc

Ownership history in MPM BioImpact LLC  ·  6 quarters on record

This page tracks every 13F SEC filing in which MPM BioImpact LLC reported a position in Avidity Biosciences Inc (RNA). Data includes quarterly share count, position size as % of portfolio, estimated market value, and end-of-quarter stock price — sourced directly from SEC EDGAR 13F filings.

Peak position
5.42% (2025 Q3)
Avg. % of fund
3.54%
First filed
2024 Q2
Last filed
2025 Q3
Quarters held
6
Quarter Action Shares Change Chg % % of Fund Mkt Value Price (EOQ)
2025 Q3 UNCHANGED 760,022 — 0% 5.42% $33.1M —
2025 Q2 ADDED 760,022 +45,798 +6.4% 3.74% $21.6M —
2025 Q1 ADDED 714,224 +11,243 +1.6% 3.62% $21.1M —
2024 Q4 ADDED 702,981 +14,006 +2.0% 2.90% $20.4M —
2 older quarters hidden  —  Sign in free or upgrade to Premium to see full history
% of Fund (quarterly)    RNA price (monthly, adj. close)

Other funds also holding RNA

As of 2025 Q4 — sorted by position size

ALETHEA CAPITAL MANAGEMENT, LLC 3Y 7Y 15.62% Slotnik Capital, LLC 12.01% Twin Securities, Inc. 3Y 7Y 10.07% Sand Grove Capital Management LLP 3Y 7Y 8.11% HARVEST MANAGEMENT LLC 3Y 7Y 7.61% Slotnik Capital, LLC 6.72% RA CAPITAL MANAGEMENT, L.P. 3Y 7Y 6.39% TIG Advisors, LLC 3Y 7Y 6.02% KRYGER CAPITAL Ltd 3Y 5.82% PSquared Asset Management AG 3Y 7Y 5.68%
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