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HowShorted

How shorted is Nano Nuclear Energy Inc.? NNE

#25most shorted US stockof 3,805 ranked stocks, more shorted than 99%

28.79%
of shares outstanding reported short · settlement date 15 Sep 2026
vs previous report
+0.95
5 reports (~10 weeks)
+5.95
days to cover
9.77
Aggregate net short position time series for Nano Nuclear Energy Inc.

Markers along the chart's base: â–² results announced (an 8-K reporting results was filed) â–² 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 Nano Nuclear Energy Inc. days to cover

Fails to deliver

The SEC's fails-to-deliver figure for NNE: 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
115,401
14 Sep 2026
Highest in window
1,191,835
19 Mar 2026
Days with a balance
195
Window
16 Sep 2025 to 14 Sep 2026
Aggregate net short position time series for Nano Nuclear Energy 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: Energy · By year: 2024 · 2025 · 2026

History

Full reported short interest history
Settlement dateShort %Change
15 Sep 202628.79%+0.95
31 Aug 202627.84%+0.61
14 Aug 202627.23%−2.06
31 Jul 202629.29%+2.72
15 Jul 202626.57%+3.73
30 Jun 202622.84%+0.79
15 Jun 202622.05%+3.17
29 May 202618.88%+1.59
15 May 202617.29%−1.77
30 Apr 202619.06%+1.50
15 Apr 202617.56%+0.87
31 Mar 202616.69%−9.83
13 Mar 202626.52%+1.45
27 Feb 202625.07%−0.92
13 Feb 202625.99%+1.98
30 Jan 202624.01%−1.09
15 Jan 202625.10%−0.15
31 Dec 202525.25%−4.94
15 Dec 202530.19%+0.35
28 Nov 202529.84%+1.31
14 Nov 202528.53%−1.26
31 Oct 202529.79%+2.91
15 Oct 202526.88%+9.11
30 Sep 202517.77%−0.41
15 Sep 202518.18%−0.18
29 Aug 202518.36%−0.92
15 Aug 202519.28%+2.83
31 Jul 202516.45%+0.58
15 Jul 202515.87%+0.19
30 Jun 202515.68%−3.34
13 Jun 202519.02%+1.56
30 May 202517.46%+4.59
15 May 202512.87%+1.10
30 Apr 202511.77%+1.82
15 Apr 20259.95%−1.93
31 Mar 202511.88%−0.52
14 Mar 202512.40%+0.06
28 Feb 202512.34%0.00
14 Feb 202512.34%−0.02
31 Jan 202512.36%+0.83
15 Jan 202511.53%+2.17
31 Dec 20249.36%−3.62
13 Dec 202412.98%+2.67
29 Nov 202410.31%+3.93
15 Nov 20246.38%−3.49
31 Oct 20249.87%+3.24
15 Oct 20246.63%+1.09
30 Sep 20245.54%+3.24
13 Sep 20242.30%−0.38
30 Aug 20242.68%−1.10
15 Aug 20243.78%+0.58
31 Jul 20243.20%+1.15
15 Jul 20242.05%−0.28
28 Jun 20242.33%–

Newest first. Scroll inside the table for earlier dates, back to 28 Jun 2024.

Frequently asked questions

How shorted is Nano Nuclear Energy Inc. right now?
28.79% of Nano Nuclear Energy Inc.'s (NNE) shares outstanding were reported short for settlement date 15 Sep 2026, per FINRA's consolidated short interest report. That makes it the 25th 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 NNE'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 NNE's days to cover?
9.77 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.