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HowShorted

How shorted is CleanSpark, Inc.? CLSK

#18most shorted US stockof 3,805 ranked stocks, more shorted than 99%

30.60%
of shares outstanding reported short · settlement date 15 Sep 2026
vs previous report
+0.28
5 reports (~10 weeks)
−0.04
days to cover
4.87
Aggregate net short position time series for CleanSpark, 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 CleanSpark, 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
6 Aug 202628.83% 31 Jul 202628.69% 14 Aug 2026−0.14
11 May 202635.28% 30 Apr 202632.76% 15 May 2026−2.52
5 Feb 202631.68% 30 Jan 202633.42% 13 Feb 2026+1.74
25 Nov 202527.71% 14 Nov 202528.99% 28 Nov 2025+1.28
8 Aug 202521.37% 31 Jul 202519.62% 15 Aug 2025−1.75
8 May 202529.67% 30 Apr 202526.73% 15 May 2025−2.94
6 Feb 202525.42% 31 Jan 202525.60% 14 Feb 2025+0.18
2 Dec 202422.79% 29 Nov 202420.52% 13 Dec 2024−2.27

Fails to deliver

The SEC's fails-to-deliver figure for CLSK: 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.

Latest balance
2,585
14 Sep 2026
Highest in window
1,301,862
24 Nov 2025
Days with a balance
159
Window
16 Sep 2025 to 14 Sep 2026
Aggregate net short position time series for CleanSpark, 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: Financials · By year: 2021 · 2022 · 2023 · 2024 · 2025 · 2026

History

Full reported short interest history
Settlement dateShort %Change
15 Sep 202630.60%+0.28
31 Aug 202630.32%+1.63
14 Aug 202628.69%−0.14
31 Jul 202628.83%−1.56
15 Jul 202630.39%−0.25
30 Jun 202630.64%−2.40
15 Jun 202633.04%+0.35
29 May 202632.69%−0.07
15 May 202632.76%−2.52
30 Apr 202635.28%+2.28
15 Apr 202633.00%−0.68
31 Mar 202633.68%+0.60
13 Mar 202633.08%−0.13
27 Feb 202633.21%−0.21
13 Feb 202633.42%+1.74
30 Jan 202631.68%+2.36
15 Jan 202629.32%+0.64
31 Dec 202528.68%−0.21
15 Dec 202528.89%−0.10
28 Nov 202528.99%+1.28
14 Nov 202527.71%+7.18
31 Oct 202520.53%+0.08
15 Oct 202520.45%+0.25
30 Sep 202520.20%+0.42
15 Sep 202519.78%+0.89
29 Aug 202518.89%−0.73
15 Aug 202519.62%−1.75
31 Jul 202521.37%−1.64
15 Jul 202523.01%−2.01
30 Jun 202525.02%+0.17
13 Jun 202524.85%−0.85
30 May 202525.70%−1.03
15 May 202526.73%−2.94
30 Apr 202529.67%−1.34
15 Apr 202531.01%+0.49
31 Mar 202530.52%+2.96
14 Mar 202527.56%+0.32
28 Feb 202527.24%+1.64
14 Feb 202525.60%+0.18
31 Jan 202525.42%−0.62
15 Jan 202526.04%+0.16
31 Dec 202425.88%+5.36
13 Dec 202420.52%−2.27
29 Nov 202422.79%+2.65
15 Nov 202420.14%−2.18
31 Oct 202422.32%+2.01
15 Oct 202420.31%+1.68
30 Sep 202418.63%+0.48
13 Sep 202418.15%+1.46
30 Aug 202416.69%+1.30
15 Aug 202415.39%−0.99
31 Jul 202416.38%+0.25
15 Jul 202416.13%+0.02
28 Jun 202416.11%+1.03
14 Jun 202415.08%−0.25
31 May 202415.33%−1.42
15 May 202416.75%−1.71
30 Apr 202418.46%+1.47
15 Apr 202416.99%+2.78
28 Mar 202414.21%+1.65
15 Mar 202412.56%−0.81
29 Feb 202413.37%+0.07
15 Feb 202413.30%+0.08
31 Jan 202413.22%+3.01
12 Jan 202410.21%+1.35
29 Dec 20238.86%+0.39
15 Dec 20238.47%−1.39
30 Nov 20239.86%−1.12
15 Nov 202310.98%+2.01
31 Oct 20238.97%+1.51
13 Oct 20237.46%−0.61
29 Sep 20238.07%+1.71
15 Sep 20236.36%−0.12
31 Aug 20236.48%+2.15
15 Aug 20234.33%−2.05
31 Jul 20236.38%−1.10
14 Jul 20237.48%−1.36
30 Jun 20238.84%−1.19
15 Jun 202310.03%+2.37
31 May 20237.66%−0.55
15 May 20238.21%−3.83
28 Apr 202312.04%+0.93
14 Apr 202311.11%−0.68
31 Mar 202311.79%+3.68
15 Mar 20238.11%+1.31
28 Feb 20236.80%−2.13
15 Feb 20238.93%+1.95
31 Jan 20236.98%−3.33
13 Jan 202310.31%−3.10
30 Dec 202213.41%+0.31
15 Dec 202213.10%−4.06
30 Nov 202217.16%+2.91
15 Nov 202214.25%+0.57
31 Oct 202213.68%−0.65
14 Oct 202214.33%−0.26
30 Sep 202214.59%+1.45
15 Sep 202213.14%+0.55
31 Aug 202212.59%−1.65
15 Aug 202214.24%−1.51
29 Jul 202215.75%−1.27
15 Jul 202217.02%−3.10
30 Jun 202220.12%+2.01
15 Jun 202218.11%−0.83
31 May 202218.94%−0.44
13 May 202219.38%+2.10
29 Apr 202217.28%+1.45
14 Apr 202215.83%−0.53
31 Mar 202216.36%−0.58
15 Mar 202216.94%−0.53
28 Feb 202217.47%+0.02
15 Feb 202217.45%+1.25
31 Jan 202216.20%+2.56
14 Jan 202213.64%+0.62
31 Dec 202113.02%+1.90
15 Dec 202111.12%+0.14
30 Nov 202110.98%+0.38
15 Nov 202110.60%−2.42
29 Oct 202113.02%+0.20
15 Oct 202112.82%+1.99
30 Sep 202110.83%+0.90
15 Sep 20219.93%−1.76
31 Aug 202111.69%+0.03
13 Aug 202111.66%−0.33
30 Jul 202111.99%+0.49
15 Jul 202111.50%−0.37
30 Jun 202111.87%+1.80
15 Jun 202110.07%+0.88
28 May 20219.19%+2.12
14 May 20217.07%−0.78
30 Apr 20217.85%+0.85
15 Apr 20217.00%−0.25
31 Mar 20217.25%+1.73
15 Mar 20215.52%+0.79
26 Feb 20214.73%+0.76
12 Feb 20213.97%−1.90
29 Jan 20215.87%+0.05
15 Jan 20215.82%−0.83
31 Dec 20206.65%−1.72
15 Dec 20208.37%+6.69
31 Jul 20201.68%−1.41
15 Jul 20203.09%–

Newest first. Scroll inside the table for earlier dates, back to 15 Jul 2020.

Frequently asked questions

How shorted is CleanSpark, Inc. right now?
30.60% of CleanSpark, Inc.'s (CLSK) shares outstanding were reported short for settlement date 15 Sep 2026, per FINRA's consolidated short interest report. That makes it the 18th 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 CLSK'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 CLSK's days to cover?
4.87 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.