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HowShorted

How shorted is Plug Power, Inc.? PLUG

#109most shorted US stockof 3,805 ranked stocks, more shorted than 97%

20.56%
of shares outstanding reported short · settlement date 15 Sep 2026
vs previous report
−0.26
5 reports (~10 weeks)
−3.86
days to cover
6.09
Aggregate net short position time series for Plug Power, 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 Plug Power, 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
10 Aug 202621.08% 31 Jul 202620.82% 14 Aug 2026−0.26
13 Jul 202624.42% 30 Jun 202623.66% 15 Jul 2026−0.76
11 May 202624.68% 30 Apr 202624.42% 15 May 2026−0.26
2 Mar 202623.52% 27 Feb 202623.65% 13 Mar 2026+0.13
10 Nov 202526.90% 31 Oct 202521.93% 14 Nov 2025−4.97
11 Aug 202531.30% 31 Jul 202529.57% 15 Aug 2025−1.73
12 May 202524.70% 30 Apr 202525.92% 15 May 2025+1.22
28 Apr 202528.93% 15 Apr 202524.70% 30 Apr 2025−4.23

Fails to deliver

The SEC's fails-to-deliver figure for PLUG: 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
228,568
11 Sep 2026
Highest in window
11,024,831
21 Nov 2025
Days with a balance
206
Window
16 Sep 2025 to 14 Sep 2026
Aggregate net short position time series for Plug Power, 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 11M 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 202620.56%−0.26
31 Aug 202620.82%0.00
14 Aug 202620.82%−0.26
31 Jul 202621.08%−2.58
15 Jul 202623.66%−0.76
30 Jun 202624.42%+0.08
15 Jun 202624.34%−0.56
29 May 202624.90%+0.48
15 May 202624.42%−0.26
30 Apr 202624.68%−0.09
15 Apr 202624.77%+0.35
31 Mar 202624.42%+0.77
13 Mar 202623.65%+0.13
27 Feb 202623.52%−1.39
13 Feb 202624.91%−0.13
30 Jan 202625.04%+0.59
15 Jan 202624.45%−0.57
31 Dec 202525.02%+0.37
15 Dec 202524.65%+0.49
28 Nov 202524.16%+2.23
14 Nov 202521.93%−4.97
31 Oct 202526.90%−1.79
15 Oct 202528.69%−4.54
30 Sep 202533.23%+2.16
15 Sep 202531.07%+0.84
29 Aug 202530.23%+0.66
15 Aug 202529.57%−1.73
31 Jul 202531.30%+2.26
15 Jul 202529.04%+0.40
30 Jun 202528.64%+5.36
13 Jun 202523.28%+1.23
30 May 202522.05%−3.87
15 May 202525.92%+1.22
30 Apr 202524.70%−4.23
15 Apr 202528.93%−1.76
31 Mar 202530.69%−0.30
14 Mar 202530.99%−0.01
28 Feb 202531.00%−0.43
14 Feb 202531.43%+3.32
31 Jan 202528.11%+1.94
15 Jan 202526.17%+3.69
31 Dec 202422.48%−0.86
13 Dec 202423.34%+1.91
29 Nov 202421.43%−2.30
15 Nov 202423.73%−1.76
31 Oct 202425.49%−2.23
15 Oct 202427.72%−1.04
30 Sep 202428.76%−0.46
13 Sep 202429.22%+0.83
30 Aug 202428.39%+2.30
15 Aug 202426.09%−6.75
31 Jul 202432.84%+0.39
15 Jul 202432.45%+2.46
28 Jun 202429.99%+2.46
14 Jun 202427.53%+0.48
31 May 202427.05%−1.05
15 May 202428.10%+0.14
30 Apr 202427.96%+0.87
15 Apr 202427.09%+0.23
28 Mar 202426.86%+1.69
15 Mar 202425.17%+1.81
29 Feb 202423.36%−4.85
15 Feb 202428.21%−2.16
31 Jan 202430.37%+4.22
12 Jan 202426.15%−0.52
29 Dec 202326.67%+0.50
15 Dec 202326.17%+0.51
30 Nov 202325.66%+0.98
15 Nov 202324.68%+0.65
31 Oct 202324.03%+0.87
13 Oct 202323.16%+1.92
29 Sep 202321.24%−0.98
15 Sep 202322.22%+2.17
31 Aug 202320.05%+0.31
15 Aug 202319.74%+1.13
31 Jul 202318.61%−2.56
14 Jul 202321.17%+1.04
30 Jun 202320.13%+0.89
15 Jun 202319.24%−0.76
31 May 202320.00%+0.56
15 May 202319.44%+1.79
28 Apr 202317.65%+0.40
14 Apr 202317.25%+1.34
31 Mar 202315.91%+0.79
15 Mar 202315.12%+1.27
28 Feb 202313.85%−0.01
15 Feb 202313.86%−0.24
31 Jan 202314.10%+1.02
13 Jan 202313.08%−1.53
30 Dec 202214.61%+0.42
15 Dec 202214.19%+0.79
30 Nov 202213.40%+0.79
15 Nov 202212.61%+0.16
31 Oct 202212.45%+1.67
14 Oct 202210.78%−0.05
30 Sep 202210.83%+0.40
15 Sep 202210.43%−0.74
31 Aug 202211.17%−0.05
15 Aug 202211.22%−0.95
29 Jul 202212.17%+0.76
15 Jul 202211.41%+0.09
30 Jun 202211.32%+0.23
15 Jun 202211.09%−0.26
31 May 202211.35%+0.17
13 May 202211.18%−0.51
29 Apr 202211.69%+0.74
14 Apr 202210.95%−0.38
31 Mar 202211.33%−0.64
15 Mar 202211.97%+0.34
28 Feb 202211.63%−0.51
15 Feb 202212.14%+0.13
31 Jan 202212.01%+1.25
14 Jan 202210.76%+1.03
31 Dec 20219.73%+0.78
15 Dec 20218.95%+0.36
30 Nov 20218.59%+0.17
15 Nov 20218.42%−1.14
29 Oct 20219.56%−0.87
15 Oct 202110.43%+1.10
30 Sep 20219.33%−0.25
15 Sep 20219.58%+0.06
31 Aug 20219.52%+0.64
13 Aug 20218.88%+0.42
30 Jul 20218.46%+0.81
15 Jul 20217.65%+0.36
30 Jun 20217.29%−1.45
15 Jun 20218.74%−0.69
28 May 20219.43%−0.18
14 May 20219.61%−2.77
30 Apr 202112.38%+0.87
15 Apr 202111.51%+0.98
31 Mar 202110.53%+0.02
15 Mar 202110.51%+1.16
26 Feb 20219.35%+0.48
12 Feb 20218.87%−1.08
29 Jan 20219.95%−5.16
15 Jan 202115.11%−0.17
31 Dec 202015.28%+0.03
15 Dec 202015.25%−0.76
30 Nov 202016.01%−1.45
13 Nov 202017.46%−0.54
30 Oct 202018.00%−1.74
15 Oct 202019.74%+2.82
30 Sep 202016.92%+0.64
15 Sep 202016.28%+1.43
31 Aug 202014.85%+0.63
14 Aug 202014.22%−2.00
31 Jul 202016.22%−1.96
15 Jul 202018.18%−4.23
30 Jun 202022.41%−0.02
15 Jun 202022.43%+0.65
29 May 202021.78%−0.50
15 May 202022.28%+0.47
30 Apr 202021.81%+0.15
15 Apr 202021.66%+0.52
31 Mar 202021.14%−1.44
13 Mar 202022.58%−3.08
28 Feb 202025.66%+3.90
14 Feb 202021.76%+0.18
31 Jan 202021.58%+0.22
15 Jan 202021.36%+3.91
31 Dec 201917.45%−0.42
13 Dec 201917.87%−1.51
29 Nov 201919.38%−0.16
15 Nov 201919.54%+2.11
31 Oct 201917.43%−0.02
15 Oct 201917.45%−0.83
30 Sep 201918.28%+1.33
13 Sep 201916.95%+0.16
30 Aug 201916.79%−0.94
15 Aug 201917.73%−2.07
31 Jul 201919.80%−1.89
15 Jul 201921.69%+0.15
28 Jun 201921.54%+0.47
14 Jun 201921.07%−0.36
31 May 201921.43%+1.74
15 May 201919.69%−0.11
30 Apr 201919.80%+0.48
15 Apr 201919.32%+2.14
29 Mar 201917.18%+0.70
15 Mar 201916.48%−0.87
28 Feb 201917.35%+0.62
15 Feb 201916.73%+0.10
31 Jan 201916.63%−0.40
15 Jan 201917.03%+1.48
31 Dec 201815.55%+0.88
14 Dec 201814.67%−0.01
30 Nov 201814.68%+0.19
15 Nov 201814.49%−1.85
31 Oct 201816.34%−0.69
15 Oct 201817.03%+1.33
28 Sep 201815.70%−1.05
14 Sep 201816.75%+0.98
31 Aug 201815.77%+0.01
15 Aug 201815.76%+1.48
31 Jul 201814.28%+0.94
13 Jul 201813.34%−1.89
29 Jun 201815.23%−1.22
15 Jun 201816.45%+0.49
31 May 201815.96%−0.03
15 May 201815.99%+0.94
30 Apr 201815.05%−0.03
13 Apr 201815.08%−0.03
29 Mar 201815.11%+0.06
15 Mar 201815.05%+0.28
28 Feb 201814.77%+0.21
15 Feb 201814.56%+1.14
31 Jan 201813.42%−0.38
12 Jan 201813.80%−0.59
29 Dec 201714.39%–

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

Frequently asked questions

How shorted is Plug Power, Inc. right now?
20.56% of Plug Power, Inc.'s (PLUG) shares outstanding were reported short for settlement date 15 Sep 2026, per FINRA's consolidated short interest report. That makes it the 109th 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 PLUG'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 PLUG's days to cover?
6.09 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.