Avidity Biosciences Ownership | Who Owns Avidity Biosciences?
Avidity Biosciences Ownership Summary
Avidity Biosciences is owned by 49.89% institutional investors, 4.08% insiders, and 46.03% retail investors. Fmr is the largest institutional shareholder, holding 16.65% of RNA shares. Fidelity Growth Compy Commingled Pl S is the top mutual fund, with 4.27% of its assets in Avidity Biosciences shares.
RNA Ownership Benchmark
| Type | Name | % Inst | % Insiders | % Retail |
|---|---|---|---|---|
| Stock | Avidity Biosciences | 49.89% | 4.08% | 46.03% |
| Sector | Healthcare Stocks | 42.53% | 10.81% | 46.67% |
| Industry | Biotech Stocks | 45.24% | 10.75% | 44.01% |
Institutional Shareholders
Top Institutional Shareholders by Total Shares
| Holder | Shares | % Holding | Value |
|---|---|---|---|
| Fmr | 21.59M | 16.65% | $940.50M |
| Vanguard group | 13.22M | 10.20% | $575.98M |
| Blackrock | 8.62M | 9.89% | $352.23M |
| Rtw investments, lp | 11.37M | 8.77% | $495.51M |
| Wellington management group llp | 10.07M | 7.76% | $438.54M |
| Price t rowe associates inc /md/ | 9.79M | 7.55% | $426.44M |
| Blackrock funding, inc. /de | 9.20M | 7.10% | $400.96M |
| Ra capital management | 8.64M | 6.67% | $376.49M |
| Avoro capital advisors | 7.64M | 5.90% | $333.09M |
| Janus henderson group | 7.05M | 5.72% | $205.13M |
Top Institutional Shareholders by % of Total Assets
| Holder | Shares | % Assets | Value |
|---|---|---|---|
| Alethea capital management | 446.13K | 12.49% | $19.44M |
| University of wisconsin foundation | 289.20K | 10.67% | $12.60M |
| Casdin capital | 1.78M | 6.47% | $77.55M |
| Rtw investments, lp | 11.37M | 6.11% | $495.51M |
| Bioimpact capital | 760.02K | 5.42% | $33.11M |
| Silverarc capital management | 844.63K | 4.96% | $36.80M |
| Ra capital management | 8.64M | 4.64% | $376.49M |
| Avoro capital advisors | 7.64M | 4.31% | $333.09M |
| Boxer capital | 1.73M | 3.72% | $70.56M |
| Logos global management lp | 600.00K | 2.34% | $26.14M |
Top Buyers
| Holder | Shares | % Assets | Change |
|---|---|---|---|
| Fmr | 21.59M | 0.05% | 5.40M |
| Vanguard group | 13.22M | 0.01% | 3.97M |
| Blackrock | 8.62M | 0.01% | 2.46M |
| Janus henderson group | 7.05M | 0.10% | 2.16M |
| Bellevue group | 2.15M | 1.95% | 2.15M |
Top Sellers
| Holder | Shares | % Assets | Change |
|---|---|---|---|
| Cowen and company | - | - | -5.13M |
| Toronto dominion bank | - | - | -3.53M |
| Price t rowe associates inc /md/ | 9.79M | 0.05% | -1.02M |
| Nuveen asset management | 352.50K | 0.00% | -706.06K |
| 5am venture management | - | - | -665.55K |
New Positions
| Holder | Shares | % Assets | Change | Value |
|---|---|---|---|---|
| Bellevue group | 2.15M | 1.95% | 2.15M | $93.80M |
| Suvretta capital management | 750.00K | 0.84% | 750.00K | $32.68M |
| Clearbridge investments | 741.69K | 0.02% | 741.69K | $32.32M |
| Norges bank | 724.79K | 0.00% | 724.79K | $21.08M |
| Artal group | 655.55K | 0.68% | 655.55K | $26.78M |
Sold Out
| Holder | Change |
|---|---|
| Twin peaks wealth advisors | -3.00 |
| Ronald blue trust | -8.00 |
| Hollencrest capital management | -10.00 |
| Nelson, van denburg & campbell wealth management group | -15.00 |
| Cva family office | -20.00 |
Institutional Ownership Trends
| Date | Holdings | Change % | Shares | Change % | Ownership | Change % | Increased Position | Change % | Decreased Position | Change % |
|---|---|---|---|---|---|---|---|---|---|---|
| Sep 30, 2025 | 164 | -23.72% | 64,667,711 | -52.44% | 49 | 0.45% | 117 | 6.36% | 37 | -51.32% |
| Jun 30, 2025 | 214 | -6.96% | 135,949,346 | 3.28% | 104 | 1.01% | 109 | -16.15% | 76 | 16.92% |
| Mar 31, 2025 | 231 | -7.23% | 133,386,370 | 4.47% | 103 | 0.96% | 130 | -7.14% | 65 | -12.16% |
| Dec 31, 2024 | 106 | -57.77% | 39,596,419 | -68.40% | 32 | 0.31% | 62 | -60.00% | 30 | -52.38% |
| Sep 30, 2024 | 250 | 26.26% | 125,295,284 | 11.90% | 101 | 0.62% | 154 | 19.38% | 63 | 28.57% |
Top Mutual Funds Shareholders
| Holder | Shares | % Holding | Change |
|---|---|---|---|
| Fidelity Growth Compy Commingled Pl S | 5.49M | 4.27% | 109.14K |
| Fidelity Growth Compy Commingled Pl O | 4.86M | 4.11% | -69.00K |
| US Small-Cap Growth II Equity Comp | 3.95M | 3.28% | -484.27K |
| Fidelity Growth Company Fund | 3.99M | 3.10% | 77.74K |
| Vanguard US Total Market Shares ETF | 3.53M | 2.93% | 3.12K |
| Vanguard Total Stock Mkt Idx Inv | 3.57M | 2.78% | -76.02K |
| T. Rowe Price New Horizons | 3.54M | 2.75% | -414.46K |
| Vanguard Health Care Inv | 2.83M | 2.35% | -196.40K |
| iShares Russell 2000 ETF | 2.76M | 2.15% | - |
| T. Rowe Price Health Sciences | 2.27M | 1.77% | -25.49K |
Recent Insider Transactions
| Date | Name | Role | Activity | Value |
|---|---|---|---|---|
| Oct 22, 2025 | Hughes Steven George | Chief Medical Officer | Sell | $105.01K |
| Oct 15, 2025 | McCarthy Teresa | Chief Human Resources Officer | Sell | $1.00M |
| Oct 03, 2025 | Mosbrooker Eric | Chief Commercial Officer | Sell | $297.77K |
| Sep 22, 2025 | Hughes Steven George | Chief Medical Officer | Sell | $89.60K |
| Sep 15, 2025 | McCarthy Teresa | Chief Human Resources Officer | Sell | $621.14K |
Insider Transactions Trends
| Date | Buy | Sell |
|---|---|---|
| 2025 Q4 | - | 3 |
| 2025 Q3 | - | 23 |
| 2025 Q2 | - | 5 |
| 2025 Q1 | - | 23 |
| 2024 Q4 | - | 14 |
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