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HowShorted

How shorted is Sunrun Inc.? RUN

#22most shorted US stockof 3,805 ranked stocks, more shorted than 99%

29.53%
of shares outstanding reported short · settlement date 15 Sep 2026
vs previous report
+1.09
5 reports (~10 weeks)
+2.25
days to cover
10.14
Aggregate net short position time series for Sunrun 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 Sunrun 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
5 Aug 202626.86% 31 Jul 202626.99% 14 Aug 2026+0.13
6 May 202624.19% 30 Apr 202624.88% 15 May 2026+0.69
26 Feb 202625.37% 13 Feb 202623.47% 27 Feb 2026−1.90
6 Nov 202523.74% 31 Oct 202522.85% 14 Nov 2025−0.89
6 Aug 202523.49% 31 Jul 202524.90% 15 Aug 2025+1.41
7 May 202527.63% 30 Apr 202525.86% 15 May 2025−1.77
27 Feb 202523.11% 14 Feb 202521.63% 28 Feb 2025−1.48
7 Nov 202420.15% 31 Oct 202420.69% 15 Nov 2024+0.54

Fails to deliver

The SEC's fails-to-deliver figure for RUN: 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
31 Aug 2026
Highest in window
1,298,837
17 Nov 2025
Days with a balance
72
Window
16 Sep 2025 to 14 Sep 2026
Aggregate net short position time series for Sunrun 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 1.3M shares.

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Sector: Industrials · By year: 2018 · 2019 · 2020 · 2021 · 2022 · 2023 · 2024 · 2025 · 2026

History

Full reported short interest history
Settlement dateShort %Change
15 Sep 202629.53%+1.09
31 Aug 202628.44%+1.45
14 Aug 202626.99%+0.13
31 Jul 202626.86%−0.77
15 Jul 202627.63%+0.35
30 Jun 202627.28%+3.17
15 Jun 202624.11%−0.93
29 May 202625.04%+0.16
15 May 202624.88%+0.69
30 Apr 202624.19%+1.17
15 Apr 202623.02%−0.54
31 Mar 202623.56%−0.15
13 Mar 202623.71%+0.24
27 Feb 202623.47%−1.90
13 Feb 202625.37%+0.91
30 Jan 202624.46%+0.33
15 Jan 202624.13%−1.57
31 Dec 202525.70%+0.92
15 Dec 202524.78%+1.14
28 Nov 202523.64%+0.79
14 Nov 202522.85%−0.89
31 Oct 202523.74%−0.63
15 Oct 202524.37%−0.79
30 Sep 202525.16%+0.48
15 Sep 202524.68%−0.30
29 Aug 202524.98%+0.08
15 Aug 202524.90%+1.41
31 Jul 202523.49%−1.82
15 Jul 202525.31%−0.72
30 Jun 202526.03%+1.07
13 Jun 202524.96%+0.02
30 May 202524.94%−0.92
15 May 202525.86%−1.77
30 Apr 202527.63%+1.20
15 Apr 202526.43%−0.19
31 Mar 202526.62%+3.28
14 Mar 202523.34%+1.71
28 Feb 202521.63%−1.48
14 Feb 202523.11%+0.70
31 Jan 202522.41%+1.12
15 Jan 202521.29%−1.51
31 Dec 202422.80%−0.79
13 Dec 202423.59%+2.11
29 Nov 202421.48%+0.79
15 Nov 202420.69%+0.54
31 Oct 202420.15%−0.70
15 Oct 202420.85%+0.68
30 Sep 202420.17%−1.10
13 Sep 202421.27%+0.38
30 Aug 202420.89%−0.69
15 Aug 202421.58%−2.38
31 Jul 202423.96%−1.26
15 Jul 202425.22%+1.68
28 Jun 202423.54%−0.29
14 Jun 202423.83%−0.56
31 May 202424.39%−0.20
15 May 202424.59%+0.22
30 Apr 202424.37%+0.53
15 Apr 202423.84%+2.49
28 Mar 202421.35%+1.27
15 Mar 202420.08%+0.91
29 Feb 202419.17%+3.62
15 Feb 202415.55%−0.08
31 Jan 202415.63%−0.32
12 Jan 202415.95%−0.27
29 Dec 202316.22%−2.37
15 Dec 202318.59%−2.27
30 Nov 202320.86%−2.23
15 Nov 202323.09%−4.39
31 Oct 202327.48%+3.28
13 Oct 202324.20%+1.87
29 Sep 202322.33%+3.37
15 Sep 202318.96%+1.09
31 Aug 202317.87%+0.61
15 Aug 202317.26%+0.40
31 Jul 202316.86%−0.39
14 Jul 202317.25%+0.73
30 Jun 202316.52%+0.59
15 Jun 202315.93%−0.46
31 May 202316.39%−0.91
15 May 202317.30%+1.21
28 Apr 202316.09%−0.19
14 Apr 202316.28%−0.16
31 Mar 202316.44%+1.31
15 Mar 202315.13%−0.04
28 Feb 202315.17%+1.04
15 Feb 202314.13%−0.85
31 Jan 202314.98%−0.05
13 Jan 202315.03%+0.58
30 Dec 202214.45%+1.20
15 Dec 202213.25%−0.35
30 Nov 202213.60%−0.97
15 Nov 202214.57%−0.29
31 Oct 202214.86%+0.83
14 Oct 202214.03%+1.57
30 Sep 202212.46%+0.13
15 Sep 202212.33%+0.44
31 Aug 202211.89%−1.16
15 Aug 202213.05%−2.41
29 Jul 202215.46%+1.19
15 Jul 202214.27%+0.61
30 Jun 202213.66%+0.70
15 Jun 202212.96%−2.45
31 May 202215.41%−2.19
13 May 202217.60%+0.50
29 Apr 202217.10%+3.29
14 Apr 202213.81%−1.05
31 Mar 202214.86%−1.74
15 Mar 202216.60%−2.37
28 Feb 202218.97%+1.87
15 Feb 202217.10%+1.02
31 Jan 202216.08%−1.59
14 Jan 202217.67%+0.83
31 Dec 202116.84%+0.93
15 Dec 202115.91%+0.82
30 Nov 202115.09%−0.72
15 Nov 202115.81%−1.70
29 Oct 202117.51%+0.55
15 Oct 202116.96%−1.28
30 Sep 202118.24%+0.39
15 Sep 202117.85%+0.50
31 Aug 202117.35%+1.62
13 Aug 202115.73%+0.44
30 Jul 202115.29%−2.01
15 Jul 202117.30%+0.65
30 Jun 202116.65%−0.51
15 Jun 202117.16%+0.86
28 May 202116.30%+0.59
14 May 202115.71%+1.74
30 Apr 202113.97%+0.03
15 Apr 202113.94%+0.33
31 Mar 202113.61%−0.22
15 Mar 202113.83%−0.21
26 Feb 202114.04%−0.34
12 Feb 202114.38%+2.96
29 Jan 202111.42%+1.51
15 Jan 20219.91%−0.93
31 Dec 202010.84%+0.31
15 Dec 202010.53%+0.74
30 Nov 20209.79%−0.14
13 Nov 20209.93%−5.81
30 Oct 202015.74%+0.65
15 Oct 202015.09%−0.54
30 Sep 202015.63%+1.89
15 Sep 202013.74%+0.78
31 Aug 202012.96%+0.25
14 Aug 202012.71%−1.66
31 Jul 202014.37%−0.40
15 Jul 202014.77%−0.80
30 Jun 202015.57%+0.37
15 Jun 202015.20%+0.04
29 May 202015.16%+0.07
15 May 202015.09%−0.56
30 Apr 202015.65%−0.16
15 Apr 202015.81%−0.13
31 Mar 202015.94%+0.60
13 Mar 202015.34%−0.10
28 Feb 202015.44%−0.32
14 Feb 202015.76%+1.53
31 Jan 202014.23%+0.04
15 Jan 202014.19%+0.82
31 Dec 201913.37%+0.80
13 Dec 201912.57%+0.12
29 Nov 201912.45%−0.72
15 Nov 201913.17%+0.46
31 Oct 201912.71%−1.15
15 Oct 201913.86%−0.54
30 Sep 201914.40%+2.18
13 Sep 201912.22%+0.64
30 Aug 201911.58%+0.58
15 Aug 201911.00%0.00
31 Jul 201911.00%−0.37
15 Jul 201911.37%−0.21
28 Jun 201911.58%+0.79
14 Jun 201910.79%−0.15
31 May 201910.94%+0.34
15 May 201910.60%+0.75
30 Apr 20199.85%−0.26
15 Apr 201910.11%+0.63
29 Mar 20199.48%0.00
15 Mar 20199.48%+0.40
28 Feb 20199.08%−0.92
15 Feb 201910.00%−0.20
31 Jan 201910.20%−0.81
15 Jan 201911.01%−0.57
31 Dec 201811.58%+0.76
14 Dec 201810.82%+0.05
30 Nov 201810.77%+0.52
15 Nov 201810.25%−0.57
31 Oct 201810.82%−0.12
15 Oct 201810.94%+0.39
28 Sep 201810.55%+0.59
14 Sep 20189.96%−0.36
31 Aug 201810.32%+0.89
15 Aug 20189.43%+0.54
31 Jul 20188.89%−1.15
13 Jul 201810.04%−1.91
29 Jun 201811.95%−2.22
15 Jun 201814.17%+0.61
31 May 201813.56%+0.21
15 May 201813.35%−1.06
30 Apr 201814.41%+0.84
13 Apr 201813.57%−1.75
29 Mar 201815.32%−0.37
15 Mar 201815.69%+0.45
28 Feb 201815.24%−0.43
15 Feb 201815.67%+0.55
31 Jan 201815.12%+0.77
12 Jan 201814.35%−0.33
29 Dec 201714.68%–

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

Frequently asked questions

How shorted is Sunrun Inc. right now?
29.53% of Sunrun Inc.'s (RUN) shares outstanding were reported short for settlement date 15 Sep 2026, per FINRA's consolidated short interest report. That makes it the 22nd 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 RUN'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 RUN's days to cover?
10.14 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.