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HowShorted

How shorted is ACCURAY INC? ARAY

#1,994most shorted US stockof 3,805 ranked stocks, more shorted than 47%

4.14%
of shares outstanding reported short · settlement date 15 Sep 2026
vs previous report
−0.04
5 reports (~10 weeks)
+0.08
days to cover
11.60
Aggregate net short position time series for ACCURAY 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 ACCURAY 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
19 Aug 20263.92% 14 Aug 20264.18% 31 Aug 2026+0.26
6 May 20265.79% 30 Apr 20265.55% 15 May 2026−0.24
4 Feb 20264.07% 30 Jan 20264.79% 13 Feb 2026+0.72
5 Nov 20252.61% 31 Oct 20252.85% 14 Nov 2025+0.24
20 Oct 20252.84% 15 Oct 20252.61% 31 Oct 2025−0.23
13 Aug 20252.36% 31 Jul 20252.28% 15 Aug 2025−0.08
30 Apr 20253.84% 15 Apr 20254.42% 15 May 2025+0.58
5 Feb 20254.37% 31 Jan 20254.07% 14 Feb 2025−0.30

Fails to deliver

The SEC's fails-to-deliver figure for ARAY: 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
793
11 Sep 2026
Highest in window
54,400
18 Jun 2026
Days with a balance
48
Window
16 Sep 2025 to 14 Sep 2026
Aggregate net short position time series for ACCURAY 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 54K shares.

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Sector: Healthcare

History

Full reported short interest history
Settlement dateShort %Change
15 Sep 20264.14%−0.04
31 Aug 20264.18%+0.26
14 Aug 20263.92%−0.90
31 Jul 20264.82%+0.85
15 Jul 20263.97%−0.09
30 Jun 20264.06%−1.74
15 Jun 20265.80%−1.00
29 May 20266.80%+1.25
15 May 20265.55%−0.24
30 Apr 20265.79%−0.86
15 Apr 20266.65%+0.25
31 Mar 20266.40%+0.84
13 Mar 20265.56%+0.95
27 Feb 20264.61%−0.18
13 Feb 20264.79%+0.72
30 Jan 20264.07%+0.42
15 Jan 20263.65%−0.12
31 Dec 20253.77%+0.35
15 Dec 20253.42%+0.40
28 Nov 20253.02%+0.17
14 Nov 20252.85%+0.24
31 Oct 20252.61%−0.23
15 Oct 20252.84%−0.22
30 Sep 20253.06%+0.09
15 Sep 20252.97%+0.82
29 Aug 20252.15%−0.13
15 Aug 20252.28%−0.08
31 Jul 20252.36%−0.39
15 Jul 20252.75%−0.06
30 Jun 20252.81%+0.36
13 Jun 20252.45%−1.70
30 May 20254.15%−0.27
15 May 20254.42%+0.37
30 Apr 20254.05%+0.21
15 Apr 20253.84%−0.36
31 Mar 20254.20%−0.20
14 Mar 20254.40%+0.22
28 Feb 20254.18%+0.11
14 Feb 20254.07%−0.30
31 Jan 20254.37%+0.36
15 Jan 20254.01%−0.01
31 Dec 20244.02%+0.44
13 Dec 20243.58%+0.15
29 Nov 20243.43%−0.16
15 Nov 20243.59%−0.34
31 Oct 20243.93%−0.08
15 Oct 20244.01%+0.08
30 Sep 20243.93%−0.13
13 Sep 20244.06%−0.16
30 Aug 20244.22%−1.03
15 Aug 20245.25%+0.38
31 Jul 20244.87%−0.59
15 Jul 20245.46%−0.62
28 Jun 20246.08%+0.41
14 Jun 20245.67%−0.09
31 May 20245.76%−0.24
15 May 20246.00%+0.34
30 Apr 20245.66%+0.18
15 Apr 20245.48%+0.17
28 Mar 20245.31%−0.15
15 Mar 20245.46%+0.29
29 Feb 20245.17%−0.10
15 Feb 20245.27%−0.27
31 Jan 20245.54%−0.14
12 Jan 20245.68%−0.16
29 Dec 20235.84%+0.11
15 Dec 20235.73%−0.06
30 Nov 20235.79%+0.02
15 Nov 20235.77%−0.32
31 Oct 20236.09%−0.13
13 Oct 20236.22%−0.05
29 Sep 20236.27%−0.13
15 Sep 20236.40%−0.05
31 Aug 20236.45%−0.85
15 Aug 20237.30%−0.28
31 Jul 20237.58%+0.04
14 Jul 20237.54%−0.10
30 Jun 20237.64%+2.22
15 Jun 20235.42%+0.19
31 May 20235.23%+0.14
15 May 20235.09%+0.07
28 Apr 20235.02%+0.24
14 Apr 20234.78%−0.03
31 Mar 20234.81%−0.13
15 Mar 20234.94%+0.17
28 Feb 20234.77%−0.30
15 Feb 20235.07%+0.02
31 Jan 20235.05%−0.12
13 Jan 20235.17%−0.05
30 Dec 20225.22%−0.10
15 Dec 20225.32%+0.10
30 Nov 20225.22%−0.17
15 Nov 20225.39%−0.06
31 Oct 20225.45%+0.07
14 Oct 20225.38%−0.17
30 Sep 20225.55%+0.33
15 Sep 20225.22%+0.08
31 Aug 20225.14%+0.05
15 Aug 20225.09%−0.33
29 Jul 20225.42%+0.24
15 Jul 20225.18%−0.32
30 Jun 20225.50%−3.41
15 Jun 20228.91%+1.09
31 May 20227.82%+0.43
13 May 20227.39%+1.20
29 Apr 20226.19%+0.03
14 Apr 20226.16%−0.11
31 Mar 20226.27%−0.04
15 Mar 20226.31%−0.08
28 Feb 20226.39%+0.10
15 Feb 20226.29%−1.36
31 Jan 20227.65%+0.31
14 Jan 20227.34%−0.25
31 Dec 20217.59%−0.10
15 Dec 20217.69%−0.90
30 Nov 20218.59%+0.26
15 Nov 20218.33%−1.15
29 Oct 20219.48%+0.51
15 Oct 20218.97%+0.13
30 Sep 20218.84%−0.77
15 Sep 20219.61%−0.06
31 Aug 20219.67%+0.28
13 Aug 20219.39%−0.86
30 Jul 202110.25%+0.19
15 Jul 202110.06%−0.12
30 Jun 202110.18%−0.16
15 Jun 202110.34%+0.33
28 May 202110.01%−0.23
14 May 202110.24%+3.58
30 Apr 20216.66%+0.31
15 Apr 20216.35%−0.49
31 Mar 20216.84%−0.57
15 Mar 20217.41%+0.23
26 Feb 20217.18%+0.24
12 Feb 20216.94%+0.79
29 Jan 20216.15%−0.29
15 Jan 20216.44%+0.08
31 Dec 20206.36%+0.07
15 Dec 20206.29%+0.30
30 Nov 20205.99%+0.41
13 Nov 20205.58%−0.76
30 Oct 20206.34%+0.14
15 Oct 20206.20%+1.40
30 Sep 20204.80%+1.04
15 Sep 20203.76%+0.01
31 Aug 20203.75%−0.04
14 Aug 20203.79%+0.40
31 Jul 20203.39%+0.04
15 Jul 20203.35%−0.15
30 Jun 20203.50%+0.40
15 Jun 20203.10%−0.11
29 May 20203.21%−0.20
15 May 20203.41%+0.02
30 Apr 20203.39%+0.12
15 Apr 20203.27%+0.94
31 Mar 20202.33%−0.68
13 Mar 20203.01%+0.23
28 Feb 20202.78%+0.09
14 Feb 20202.69%−0.32
31 Jan 20203.01%+0.64
15 Jan 20202.37%+0.08
31 Dec 20192.29%−0.05
13 Dec 20192.34%+0.01
29 Nov 20192.33%+0.26
15 Nov 20192.07%+0.29
31 Oct 20191.78%−0.34
15 Oct 20192.12%−0.06
30 Sep 20192.18%−0.59
13 Sep 20192.77%+0.19
30 Aug 20192.58%−0.53
15 Aug 20193.11%+0.24
31 Jul 20192.87%−0.22
15 Jul 20193.09%−1.10
28 Jun 20194.19%−0.15
14 Jun 20194.34%−0.36
31 May 20194.70%−0.83
15 May 20195.53%+0.88
30 Apr 20194.65%−0.06
15 Apr 20194.71%−1.16
29 Mar 20195.87%−0.54
15 Mar 20196.41%+0.83
28 Feb 20195.58%+0.01
15 Feb 20195.57%+1.09
31 Jan 20194.48%−0.29
15 Jan 20194.77%−0.80
31 Dec 20185.57%−0.18
14 Dec 20185.75%−0.04
30 Nov 20185.79%+0.11
15 Nov 20185.68%+0.39
31 Oct 20185.29%−1.42
15 Oct 20186.71%+0.45
28 Sep 20186.26%−0.14
14 Sep 20186.40%+0.47
31 Aug 20185.93%+0.83
15 Aug 20185.10%−0.17
31 Jul 20185.27%+0.02
13 Jul 20185.25%+0.48
29 Jun 20184.77%−0.33
15 Jun 20185.10%+0.03
31 May 20185.07%−0.34
15 May 20185.41%+1.19
30 Apr 20184.22%−1.46
13 Apr 20185.68%−0.09
29 Mar 20185.77%+0.81
15 Mar 20184.96%−0.83
28 Feb 20185.79%+0.05
15 Feb 20185.74%−1.80
31 Jan 20187.54%+1.06
12 Jan 20186.48%+0.08
29 Dec 20176.40%–

Newest first. Scroll inside the table for earlier dates, back to 29 Dec 2017.

Frequently asked questions

How shorted is ACCURAY INC right now?
4.14% of ACCURAY INC's (ARAY) shares outstanding were reported short for settlement date 15 Sep 2026, per FINRA's consolidated short interest report. That makes it the 1,994th most shorted US stock, out of 3,805 we rank.
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 ARAY'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 ARAY's days to cover?
11.60 days for settlement date 15 Sep 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.