Companies / Avidity Biosciences, Inc.
Avidity Biosciences, Inc.
RNARNAMCIK 1599901SAN DIEGO, CA
Financials · FY2025
Ownership
155.1M shares outstanding · as of Feb 13, 2026
Ownership
| 10%+ / strategic | 0.09% | 142,888 |
| Institutions | 94.97% | 147,347,038 |
| Public float | 4.94% | 7,659,720 |
% of common shares outstanding (exact, from the latest cover-page filing). Institutions are quarterly 13F snapshots; insiders reflect current officers & directors.
Insiders 17
View all →| Insider | % of shares | Shares |
|---|---|---|
Boess CarstenDirector | 0.00% | 0 |
Boyce SarahCEOPresident and CEO · Director | 0.00% | 0 |
Calderaro Charles IIIFormerChief Technical Officer | 0.00% | 0 |
Flanagan W. MichaelChief Scientific Officer | 0.00% | 0 |
Gallagher Kathleen P.FormerChief Program Officer | 0.00% | 0 |
Henig NoreenDirector | 0.00% | 0 |
Hughes Steven GeorgeFormerChief Medical Officer | 0.00% | 0 |
Kaye Edward M. MDDirector | 0.00% | 0 |
Kim Jean JinsunDirector | 0.00% | 0 |
Levin Arthur aDirector | 0.00% | 0 |
Institutional holders 346
View all →| Holder | Value | % of shares |
|---|---|---|
| $984.52M | 8.80% | |
| $926.93M | 8.28% | |
| $623.28M | 5.57% | |
| $500.56M | 4.47% | |
| $435.71M | 3.89% | |
| $434.69M | 3.88% | |
| $393.47M | 3.52% | |
| $314.85M | 2.81% | |
| $295.58M | 2.64% | |
| $272.42M | 2.43% |
Activity
Dec 31, 2025View all →
InsidersInstitutions
Who's accumulating and trimming this stock (13F).| Date | Actor | Action | Security | Value | Shares Δ | Position after | Impact |
|---|---|---|---|---|---|---|---|
| Q2 2026 as of | BlackRock, Inc. 13F manager | Exit | — | $-926.93M | -12.9M -100.00% | — | high |
| Q1 2026 as of | RA Capital Management, L.P. 13F manager | Exit | — | $-623.28M | -8.6M -100.00% | — | high |
| Q1 2026 as of | Janus Henderson Group PLC 13F manager | Exit | — | $-500.56M | -6.9M -100.00% | — | high |
| Q1 2026 as of | Balyasny Asset Management L.P. 13F manager | Exit | — | $-435.71M | -6.0M -100.00% | — | high |
| Q1 2026 as of | Hbk Investments L P 13F manager | Exit | — | $-314.85M | -4.4M -100.00% | — | high |
| Q4 2025 as of | Hbk Investments L P 13F manager | New | — | $314.85M | +4.4M | 4,365,000 2.81% of shares | high |
| Q2 2026 as of | State Street Corporation 13F manager | Exit | — | $-295.58M | -4.1M -100.00% | — | high |
| Q4 2025 as of | OCONNOR, A Distinct Business Unit of UBS ASSET MANAGEMENT AMERICAS (LLC) 13F manager | New | — | $268.08M | +3.7M | 3,716,597 2.40% of shares | high |
5%+ ownership events
Schedule 13D / 13G
| Filer | Stance | % of class |
|---|---|---|
| Janus Henderson Group PLC | Passive13G/A | — |
| Wellington Management Group LLP | Passive13G/A | — |
| T. Rowe Price Associates, Inc. | Passive13G/A | — |
| Avoro Capital Advisors LLC | Passive13G/A | — |
| RA Capital Management, L.P. | Passive13G/A | — |
Securities
via CUSIP / OpenFIGI
| Symbol | Type | CUSIP |
|---|---|---|
| RNA | — | 05370A108 |