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HowShorted

How shorted was Avidity Biosciences, Inc.? RNA

Avidity Biosciences, Inc. left the US market in 2026. This page is a frozen archive of its reported short interest, ending 13 Feb 2026. The ticker RNA no longer refers to this company; it currently belongs to Atrium Therapeutics, Inc..
6.55%
of shares outstanding reported short · settlement date 13 Feb 2026
vs previous report
+0.75
5 reports (~10 weeks)
+0.67
days to cover
3.56
Aggregate net short position time series for Avidity Biosciences, Inc.

Markers along the chart's base: ▲ results announced (an 8-K reporting results was filed) ▲ quarterly or annual report filed. Dates are SEC filing dates; hover a point to see events since the previous settlement.

Days to cover

FINRA's own figure: reported shares short divided by the stock's average daily trading volume, published alongside each settlement. It expresses the short position in days of typical trading rather than as a percentage of the company; the two can move differently.

Aggregate net short position time series for Avidity Biosciences, Inc. days to cover

Short interest around results

For each results announcement (an 8-K reporting results, by its SEC filing date), the FINRA settlement before it and the first one after. Settlements fall twice a month, so the two figures can sit up to a month apart and much else changes in between: this shows what was reported, not why.

Reported short interest before and after each results announcement
Results filedSettlement beforeSettlement afterChange
10 Nov 20256.97% 31 Oct 20256.85% 14 Nov 2025−0.12
7 Aug 202512.60% 31 Jul 202512.18% 15 Aug 2025−0.42
8 May 202512.93% 30 Apr 202513.10% 15 May 2025+0.17
27 Feb 202513.71% 14 Feb 202514.10% 28 Feb 2025+0.39
7 Nov 202412.29% 31 Oct 202412.17% 15 Nov 2024−0.12
9 Aug 202411.80% 31 Jul 202411.77% 15 Aug 2024−0.03
9 May 202411.91% 30 Apr 202411.82% 15 May 2024−0.09
28 Feb 202410.43% 15 Feb 202410.48% 29 Feb 2024+0.05

Fails to deliver

The SEC's fails-to-deliver figure for RNA: the aggregate net balance of shares that failed to be delivered at each settlement date, published by the SEC twice a month and shown here verbatim for the trailing window. A balance is not a daily flow, and a fail has many ordinary causes; the SEC says it cannot guarantee the accuracy of the data. See what fails to deliver are and the largest balances today.

Last balance on file
48
10 Sep 2026
Highest in window
1,154,823
2 Mar 2026
Days with a balance
71
Window
16 Sep 2025 to 14 Sep 2026
Aggregate net short position time series for Avidity Biosciences, Inc. fails to deliver

Source: U.S. Securities and Exchange Commission, fails-to-deliver data (public domain). Only settlement days with a positive balance appear; the largest balance in the window was 1.2M shares.

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Sector: Healthcare · By year: 2020 · 2021 · 2022 · 2023 · 2024 · 2025

History

Full reported short interest history
Settlement dateShort %Change
13 Feb 20266.55%+0.75
30 Jan 20265.80%+0.22
15 Jan 20265.58%−0.25
31 Dec 20255.83%−0.63
15 Dec 20256.46%+0.58
28 Nov 20255.88%−0.97
14 Nov 20256.85%−0.12
31 Oct 20256.97%−8.60
15 Oct 202515.57%−0.56
30 Sep 202516.13%−1.16
15 Sep 202517.29%+3.63
29 Aug 202513.66%+1.48
15 Aug 202512.18%−0.42
31 Jul 202512.60%−0.89
15 Jul 202513.49%−0.38
30 Jun 202513.87%+0.31
13 Jun 202513.56%+0.14
30 May 202513.42%+0.32
15 May 202513.10%+0.17
30 Apr 202512.93%+0.05
15 Apr 202512.88%−1.74
31 Mar 202514.62%+1.20
14 Mar 202513.42%−0.68
28 Feb 202514.10%+0.39
14 Feb 202513.71%+1.18
31 Jan 202512.53%−0.37
15 Jan 202512.90%−0.25
31 Dec 202413.15%+0.18
13 Dec 202412.97%+0.45
29 Nov 202412.52%+0.35
15 Nov 202412.17%−0.12
31 Oct 202412.29%−1.27
15 Oct 202413.56%+0.10
30 Sep 202413.46%+2.55
13 Sep 202410.91%+1.07
30 Aug 20249.84%−1.93
15 Aug 202411.77%−0.03
31 Jul 202411.80%−1.69
15 Jul 202413.49%+2.16
28 Jun 202411.33%−0.45
14 Jun 202411.78%+0.46
31 May 202411.32%−0.50
15 May 202411.82%−0.09
30 Apr 202411.91%−2.48
15 Apr 202414.39%+0.92
28 Mar 202413.47%+1.84
15 Mar 202411.63%+1.15
29 Feb 202410.48%+0.05
15 Feb 202410.43%+0.12
31 Jan 202410.31%+0.41
12 Jan 20249.90%−3.36
29 Dec 202313.26%−1.15
15 Dec 202314.41%−0.47
30 Nov 202314.88%+0.22
15 Nov 202314.66%−1.00
31 Oct 202315.66%+0.05
13 Oct 202315.61%−5.29
29 Sep 202320.90%−1.66
15 Sep 202322.56%+0.46
31 Aug 202322.10%+0.42
15 Aug 202321.68%+0.59
31 Jul 202321.09%−1.57
14 Jul 202322.66%+0.47
30 Jun 202322.19%+2.28
15 Jun 202319.91%+0.98
31 May 202318.93%+0.81
15 May 202318.12%+4.10
28 Apr 202314.02%−1.99
14 Apr 202316.01%+0.60
31 Mar 202315.41%+3.14
15 Mar 202312.27%+0.54
28 Feb 202311.73%+0.60
15 Feb 202311.13%−2.63
31 Jan 202313.76%−0.69
13 Jan 202314.45%−0.75
30 Dec 202215.20%+3.25
15 Dec 202211.95%−0.93
30 Nov 202212.88%−0.03
15 Nov 202212.91%+2.71
31 Oct 202210.20%+0.75
14 Oct 20229.45%+0.65
30 Sep 20228.80%−1.36
15 Sep 202210.16%+0.06
31 Aug 202210.10%−0.58
15 Aug 202210.68%−0.50
29 Jul 202211.18%−0.67
15 Jul 202211.85%+0.45
30 Jun 202211.40%+1.50
15 Jun 20229.90%+0.45
31 May 20229.45%+0.82
13 May 20228.63%+0.38
29 Apr 20228.25%−0.12
14 Apr 20228.37%−0.02
31 Mar 20228.39%+0.11
15 Mar 20228.28%+0.17
28 Feb 20228.11%+0.15
15 Feb 20227.96%+0.24
31 Jan 20227.72%−0.32
14 Jan 20228.04%−0.39
31 Dec 20218.43%−0.65
15 Dec 20219.08%−0.94
30 Nov 202110.02%−0.35
15 Nov 202110.37%−0.97
29 Oct 202111.34%−2.59
15 Oct 202113.93%−1.04
30 Sep 202114.97%+0.55
15 Sep 202114.42%−2.88
31 Aug 202117.30%+0.60
13 Aug 202116.70%+0.60
30 Jul 202116.10%−0.02
15 Jul 202116.12%−0.17
30 Jun 202116.29%−0.73
15 Jun 202117.02%−0.42
28 May 202117.44%−0.08
14 May 202117.52%+0.20
30 Apr 202117.32%+0.36
15 Apr 202116.96%+1.47
31 Mar 202115.49%+3.62
15 Mar 202111.87%+2.15
26 Feb 20219.72%+1.21
12 Feb 20218.51%+0.67
29 Jan 20217.84%−0.62
15 Jan 20218.46%+0.80
31 Dec 20207.66%+2.92
15 Dec 20204.74%+0.18
30 Nov 20204.56%+0.16
13 Nov 20204.40%+0.17
30 Oct 20204.23%+0.42
15 Oct 20203.81%−0.29
30 Sep 20204.10%+1.60
15 Sep 20202.50%+0.25
31 Aug 20202.25%+0.52
14 Aug 20201.73%+0.11
31 Jul 20201.62%–

Newest first. Scroll inside the table for earlier dates, back to 31 Jul 2020.

Frequently asked questions

How shorted was Avidity Biosciences, Inc.?
Avidity Biosciences, Inc. left the US market in 2026. Its final reported figure was 6.55% of shares outstanding for settlement date 13 Feb 2026, per FINRA's consolidated short interest report; this page preserves its full history.
What does this number include?
FINRA member firms must report their short positions in all US equities twice a month; FINRA consolidates them per security. We divide that official share count by the company's shares outstanding from its SEC filings. This is the regulatory figure, not a daily estimate.
Why does it only update twice a month?
US short interest is reported for settlement on the 15th and the last business day of each month, and FINRA publishes the consolidated figures about nine business days later. That cadence is set by regulation; no daily official figure exists.
Is this RNA's short float?
No. This is short interest as a percentage of shares outstanding, the count in the company's SEC filings. "Short float" divides the same FINRA short count by the public float, which excludes closely held shares, so it comes out higher for the same company. We publish no float estimates: the float is not a regulatory figure.
What is RNA's days to cover?
3.56 days for settlement date 13 Feb 2026: FINRA's own short interest ratio, the reported shares short divided by average daily trading volume. It is published in the same FINRA file and shown verbatim; we hold no volume data ourselves.
Which funds are short?
US public short interest is aggregate-only: individual short sellers are not named. Only some EU markets publish named positions.