Plug Power, Inc. short interest in 2021

In 2021, Plug Power, Inc.'s disclosed short interest ran from 15.11% of shares outstanding on 15 Jan 2021 to 9.73% on 31 Dec 2021, a change of -5.38 percentage points. The year's high was 15.11% on 15 Jan 2021 and its low 7.29% on 30 Jun 2021, averaging 9.68% across 24 twice-monthly settlement dates. FINRA's days-to-cover figure peaked at 3.60 days on 15 Sep 2021. Full history: Plug Power, Inc..

Cite this page

Plain

Short position data for Plug Power, Inc. short interest in 2021: FINRA, compiled by howshorted.com, settlement date 31 Dec 2021. https://howshorted.com/us/company/plug/2021/

Wikipedia

<ref>{{cite web |title=Plug Power, Inc. short interest in 2021 short position data |url=https://howshorted.com/us/company/plug/2021/ |website=HowShorted |publisher=howshorted.com (data: FINRA) |date=2021-12-31 |access-date=2026-10-13}}</ref>

BibTeX

@misc{howshorted-plug-power-inc-short-interest-in-2021-2021-12-31,
  title        = {Plug Power, Inc. short interest in 2021 short position data},
  author       = {{HowShorted}},
  howpublished = {\url{https://howshorted.com/us/company/plug/2021/}},
  note         = {Data: FINRA, settlement date 31 Dec 2021; accessed 2026-10-13},
  year         = {2021}
}

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2021 in figures

Start of year: 15.11% (15 Jan 2021)
End of year: 9.73% (31 Dec 2021)
Change: -5.38 pp
High: 15.11% (15 Jan 2021)
Low: 7.29% (30 Jun 2021)
Average: 9.68%
Highest days to cover: 3.60 (15 Sep 2021)
SEC filings marked: 11

Every report in 2021

Plug Power, Inc. short interest in 2021
Settlement	Short interest	Days to cover	Filings since previous
15 Jan 2021	15.11%	1.00
29 Jan 2021	9.95%	1.00	results (8-K)
12 Feb 2021	8.87%	1.93
26 Feb 2021	9.35%	1.27	results (8-K)
15 Mar 2021	10.51%	1.51
31 Mar 2021	10.53%	1.19
15 Apr 2021	11.51%	1.72
30 Apr 2021	12.38%	1.50
14 May 2021	9.61%	1.44	results (8-K), 10-K filed, results (8-K)
28 May 2021	9.43%	1.56
15 Jun 2021	8.74%	2.03
30 Jun 2021	7.29%	1.12	10-Q filed, results (8-K)
15 Jul 2021	7.65%	2.23
30 Jul 2021	8.46%	3.23
13 Aug 2021	8.88%	2.30	10-Q filed, results (8-K)
31 Aug 2021	9.52%	3.21
15 Sep 2021	9.58%	3.60
30 Sep 2021	9.33%	3.12
15 Oct 2021	10.43%	1.99
29 Oct 2021	9.56%	2.02
15 Nov 2021	8.42%	1.73	10-Q filed, results (8-K)
30 Nov 2021	8.59%	2.50
15 Dec 2021	8.95%	2.79
31 Dec 2021	9.73%	3.48

About this data

US short interest data: FINRA (finra.org), shown as reported shares short divided by SEC-reported shares outstanding for each settlement date. FINRA® is a registered trademark of the Financial Industry Regulatory Authority, Inc. This site is not affiliated with or endorsed by FINRA or the SEC; displayed for personal reference, bulk redistribution is not permitted (see terms). Nothing here is investment advice. Method: methodology.