Stamps.com Inc. short interest in 2021

In 2021, Stamps.com Inc.'s disclosed short interest ran from 5.57% of shares outstanding on 15 Jan 2021 to 6.70% on 30 Sep 2021, a change of +1.13 percentage points. The year's high was 6.70% on 30 Sep 2021 and its low 2.30% on 15 Jul 2021, averaging 4.79% across 18 twice-monthly settlement dates. FINRA's days-to-cover figure peaked at 5.01 days on 15 Jun 2021. Full history: Stamps.com Inc..

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Plain

Short position data for Stamps.com Inc. short interest in 2021: FINRA, compiled by howshorted.com, settlement date 30 Sep 2021. https://howshorted.com/us/company/stmp-2022/2021/

Wikipedia

<ref>{{cite web |title=Stamps.com Inc. short interest in 2021 short position data |url=https://howshorted.com/us/company/stmp-2022/2021/ |website=HowShorted |publisher=howshorted.com (data: FINRA) |date=2021-09-30 |access-date=2026-10-13}}</ref>

BibTeX

@misc{howshorted-stamps-com-inc-short-interest-in-2021-2021-09-30,
  title        = {Stamps.com Inc. short interest in 2021 short position data},
  author       = {{HowShorted}},
  howpublished = {\url{https://howshorted.com/us/company/stmp-2022/2021/}},
  note         = {Data: FINRA, settlement date 30 Sep 2021; accessed 2026-10-13},
  year         = {2021}
}

By year: 2018 · 2019 · 2020 · 2021

2021 in figures

Start of year: 5.57% (15 Jan 2021)
End of year: 6.70% (30 Sep 2021)
Change: +1.13 pp
High: 6.70% (30 Sep 2021)
Low: 2.30% (15 Jul 2021)
Average: 4.79%
Highest days to cover: 5.01 (15 Jun 2021)
SEC filings marked: 6

Every report in 2021

Stamps.com Inc. short interest in 2021
Settlement	Short interest	Days to cover	Filings since previous
15 Jan 2021	5.57%	4.29
29 Jan 2021	4.14%	2.45
12 Feb 2021	3.19%	2.82
26 Feb 2021	5.89%	1.49	results (8-K), 10-K filed
15 Mar 2021	4.67%	2.43
31 Mar 2021	4.81%	3.75
15 Apr 2021	4.37%	4.32
30 Apr 2021	3.95%	3.90
14 May 2021	4.39%	2.67	10-Q filed, results (8-K)
28 May 2021	4.31%	4.78
15 Jun 2021	4.22%	5.01
30 Jun 2021	3.95%	4.44
15 Jul 2021	2.30%	1.00
30 Jul 2021	5.56%	2.11
13 Aug 2021	6.12%	3.36	results (8-K), 10-Q filed
31 Aug 2021	5.98%	4.56
15 Sep 2021	6.16%	4.50
30 Sep 2021	6.70%	4.07

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.