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HowShorted

How shorted is AURORA CANNABIS INC? ACB

12.52%
of shares outstanding reported short · settlement date 15 Dec 2025
vs previous report
+0.86
5 reports (~10 weeks)
+0.94
days to cover
3.44
Aggregate net short position time series for AURORA CANNABIS INC

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 AURORA CANNABIS INC days to cover

Fails to deliver

The SEC's fails-to-deliver figure for ACB: 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
13
11 Sep 2026
Highest in window
233,584
11 Feb 2026
Days with a balance
178
Window
16 Sep 2025 to 14 Sep 2026
Aggregate net short position time series for AURORA CANNABIS 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 234K shares.

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

History

Full reported short interest history
Settlement dateShort %Change
15 Dec 202512.52%+0.86
28 Nov 202511.66%−0.75
14 Nov 202512.41%+0.17
31 Oct 202512.24%+0.56
15 Oct 202511.68%+0.10
30 Sep 202511.58%−0.10
15 Sep 202511.68%+0.98
29 Aug 202510.70%+0.21
15 Aug 202510.49%+0.42
31 Jul 202510.07%−0.88
15 Jul 202510.95%−1.24
30 Jun 202512.19%+3.24
13 Jun 20258.95%+0.25
30 May 20258.70%−0.43
15 May 20259.13%−0.07
30 Apr 20259.20%+0.40
15 Apr 20258.80%+0.03
31 Mar 20258.77%+0.94
13 Dec 20247.83%−0.24
29 Nov 20248.07%+0.04
15 Nov 20248.03%+2.87
31 Oct 20245.16%+0.35
15 Oct 20244.81%+0.06
30 Sep 20244.75%−0.26
13 Sep 20245.01%+0.39
30 Aug 20244.62%+0.37
15 Aug 20244.25%−3.02
31 Jul 20247.27%+0.06
15 Jul 20247.21%+0.17
28 Jun 20247.04%−0.53
14 Jun 20247.57%−0.45
31 May 20248.02%−1.66
15 May 20249.68%+0.02
30 Apr 20249.66%−5.27
15 Apr 202414.93%+4.10
15 Dec 202310.83%−0.08
30 Nov 202310.91%−0.58
15 Nov 202311.49%+0.14
31 Oct 202311.35%+0.90
13 Oct 202310.45%+0.70
29 Sep 20239.75%−1.66
15 Sep 202311.41%+2.93
31 Aug 20238.48%+0.32
15 Aug 20238.16%−0.72
31 Jul 20238.88%−0.96
14 Jul 20239.84%+0.64
30 Jun 20239.20%−0.27
15 Jun 20239.47%−1.40
31 May 202310.87%+1.79
15 May 20239.08%−0.01
28 Apr 20239.09%+0.36
14 Apr 20238.73%−0.29
31 Mar 20239.02%−2.14
15 Mar 202311.16%−0.30
28 Feb 202311.46%+1.53
15 Feb 20239.93%+0.07
31 Jan 20239.86%−0.51
13 Jan 202310.37%−1.70
30 Dec 202212.07%+1.58
15 Dec 202210.49%−0.55
30 Nov 202211.04%+0.20
15 Nov 202210.84%+0.79
31 Oct 202210.05%−1.12
14 Oct 202211.17%+0.03
30 Sep 202211.14%−0.51
15 Sep 202211.65%+1.09
31 Aug 202210.56%+0.86
15 Aug 20229.70%+0.12
29 Jul 20229.58%+0.74
15 Jul 20228.84%+0.56
30 Jun 20228.28%−3.27
15 Mar 202211.55%+1.09
28 Feb 202210.46%−0.34
15 Feb 202210.80%−0.65
31 Jan 202211.45%−1.81
14 Jan 202213.26%−2.36
31 Dec 202115.62%+0.32
15 Dec 202115.30%+0.20
30 Nov 202115.10%−0.60
15 Nov 202115.70%−0.62
29 Oct 202116.32%−1.22
15 Oct 202117.54%−2.87
30 Sep 202120.41%+1.06
15 Sep 202119.35%+1.09
31 Aug 202118.26%−1.43
13 Aug 202119.69%+1.14
30 Jul 202118.55%+2.16
15 Jul 202116.39%+1.59
30 Jun 202114.80%−8.36
15 Mar 202123.16%+5.60
26 Feb 202117.56%+0.90
12 Feb 202116.66%−5.81
29 Jan 202122.47%−6.36
15 Jan 202128.83%−1.01
31 Dec 202029.84%−1.87
15 Dec 202031.71%0.00
30 Nov 202031.71%−4.06
13 Nov 202035.77%+14.96
30 Oct 202020.81%+0.43
15 Oct 202020.38%−4.21
30 Sep 202024.59%+4.30
15 Sep 202020.29%+3.19
31 Aug 202017.10%+1.90
14 Aug 202015.20%0.00
31 Jul 202015.20%+2.66
15 Jul 202012.54%−2.37
30 Jun 202014.91%–

Newest first. Scroll inside the table for earlier dates, back to 30 Jun 2020.

Frequently asked questions

How shorted is AURORA CANNABIS INC right now?
12.52% of AURORA CANNABIS INC's (ACB) shares outstanding were reported short for settlement date 15 Dec 2025, per FINRA's consolidated short interest report.
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 ACB'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 ACB's days to cover?
3.44 days for settlement date 15 Dec 2025: 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.