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RNAM

Avidity Biosciences
RNAM

Delisted

RNAM was delisted on the 26th of February, 2026.

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142 hedge funds and large institutions have $522M invested in Avidity Biosciences in 2023 Q3 according to their latest regulatory filings, with 18 funds opening new positions, 62 increasing their positions, 40 reducing their positions, and 19 closing their positions.

New
Increased
Maintained
Reduced
Closed

4,193% more call options, than puts

Call options by funds: $601K | Put options by funds: $14K

55% more repeat investments, than reductions

Existing positions increased: 62 | Existing positions reduced: 40

0% more funds holding in top 10

Funds holding in top 10: 2 → 2 (0)

1% less funds holding

Funds holding: 143 → 142 (-1)

5% less first-time investments, than exits

New positions opened: 18 | Existing positions closed: 19

6.11% less ownership

Funds ownership: 116.41% → 110.3% (-6.1%)

43% less capital invested

Capital invested by funds: $915M → $522M (-$393M)

Holders
142
Holders Change
-1
Holders Change %
-0.7%
% of All Funds
2.25%
Holding in Top 10
2
Holding in Top 10 Change
–
Holding in Top 10 Change %
–
% of All Funds
0.03%
New
18
Increased
62
Reduced
40
Closed
19
Calls
$601K
Puts
$14K
Net Calls
+$587K
Net Calls Change
+$1.02M

Top Buyers

1
Millennium Management
Millennium Management
New York
+$5.99M
2
Adage Capital Partners
Adage Capital Partners
Massachusetts
+$4.74M
3
Fidelity Investments
Fidelity Investments
Massachusetts
+$4.24M
4
JP Morgan Chase
JP Morgan Chase
New York
+$3.62M
5
CC
Casdin Capital
New York
+$3.45M

Top Sellers

1
State Street
State Street
Massachusetts
-$17.5M
2
CAM
Cormorant Asset Management
Massachusetts
-$7.32M
3
BBA
Baker Bros. Advisors
New York
-$5.45M
4
Bank of America
Bank of America
North Carolina
-$2.81M
5
Dimensional Fund Advisors
Dimensional Fund Advisors
Texas
-$2.71M
Name Holding Trade Value Shares
Change 		Change in
Stake
Fidelity Investments
1
Fidelity Investments
Massachusetts
$70.9M +$4.24M +491,567 +5%
RI
2
RTW Investments
New York
$42.7M – – –
T. Rowe Price Associates
3
T. Rowe Price Associates
Maryland
$42.2M -$584K -67,818 -1%
RCM
4
RA Capital Management
Massachusetts
$40.9M – – –
BlackRock
5
BlackRock
New York
$36.9M +$240K +27,829 +0.5%
CAC
6
Cowen and Company
New York
$35.9M – – –
State Street
7
State Street
Massachusetts
$26.5M -$17.5M -2,029,301 -33%
Vanguard Group
8
Vanguard Group
Pennsylvania
$25.6M +$408K +47,305 +1%
ACA
9
Avoro Capital Advisors
New York
$16M – – –
Artisan Partners
10
Artisan Partners
Wisconsin
$13.7M – – –
Balyasny Asset Management
11
Balyasny Asset Management
Illinois
$12.9M +$233K +27,056 +1%
CAM
12
Cormorant Asset Management
Massachusetts
$11.2M -$7.32M -850,000 -33%
Dimensional Fund Advisors
13
Dimensional Fund Advisors
Texas
$10.2M -$2.71M -314,499 -17%
Geode Capital Management
14
Geode Capital Management
Massachusetts
$9.16M -$25.8K -2,997 -0.2%
Adage Capital Partners
15
Adage Capital Partners
Massachusetts
$8.29M +$4.74M +550,000 +73%
CC
16
Casdin Capital
New York
$7.97M +$3.45M +400,000 +47%
Morgan Stanley
17
Morgan Stanley
New York
$7.39M +$508K +58,987 +5%
BC
18
Boxer Capital
California
$7.15M – – –
JP Morgan Chase
19
JP Morgan Chase
New York
$6.19M +$3.62M +420,695 +76%
ACM
20
Alethea Capital Management
Washington
$5.45M +$43.1K +5,000 +0.6%
Millennium Management
21
Millennium Management
New York
$4.72M +$5.99M +695,356 +1,540%
5VM
22
5AM Venture Management
California
$4.25M – – –
Northern Trust
23
Northern Trust
Illinois
$4.09M -$96.1K -11,156 -2%
Two Sigma Investments
24
Two Sigma Investments
New York
$3.59M +$418K +48,521 +9%
Two Sigma Advisers
25
Two Sigma Advisers
New York
$3.44M +$1.65M +191,900 +55%
1
2 3 4 5

RNAM Hedge Fund Activity: Q3 2023 in Review

142 of the 6,301 institutional investors tracked by Wall St. Rank reported a position in Avidity Biosciences (RNAM) for Q3 2023, worth a combined $522M — down 43% from $915M a quarter earlier.

Sellers outnumbered buyers: 19 funds closed out of RNAM and 18 opened new positions — a net loss of 1 holder — while 40 trimmed existing stakes and 62 added.

The largest buyer was Millennium Management, adding an estimated $5.99M. The largest seller was State Street, cutting an estimated $17.5M.

  • 142 institutional investors held Avidity Biosciences (RNAM) as of Q3 2023, down from 143 in Q2 2023.
  • Funds reported $522M of Avidity Biosciences stock for Q3 2023, down 43% quarter-over-quarter.
  • 18 funds opened new Avidity Biosciences positions in Q3 2023 and 19 closed out, a net change of -1 holder.
  • The largest Avidity Biosciences buyer in Q3 2023 was Millennium Management, an estimated $5.99M added.
  • The largest Avidity Biosciences seller in Q3 2023 was State Street, an estimated $17.5M sold.

Based on aggregated 13F filings for Q3 2023.