aTyr Pharma, Inc. short interest in 2021

In 2021, aTyr Pharma, Inc.'s disclosed short interest ran from 0.63% of shares outstanding on 15 Jan 2021 to 2.46% on 31 Dec 2021, a change of +1.83 percentage points. The year's high was 5.52% on 15 Apr 2021 and its low 0.43% on 29 Jan 2021, averaging 3.32% across 18 twice-monthly settlement dates. FINRA's days-to-cover figure peaked at 4.25 days on 15 Dec 2021. Full history: aTyr Pharma, Inc..

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Plain

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

Wikipedia

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

BibTeX

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

By year: 2020 · 2021 · 2022 · 2023 · 2024 · 2025 · 2026

2021 in figures

Start of year: 0.63% (15 Jan 2021)
End of year: 2.46% (31 Dec 2021)
Change: +1.83 pp
High: 5.52% (15 Apr 2021)
Low: 0.43% (29 Jan 2021)
Average: 3.32%
Highest days to cover: 4.25 (15 Dec 2021)
SEC filings marked: 6

Every report in 2021

aTyr Pharma, Inc. short interest in 2021
Settlement	Short interest	Days to cover	Filings since previous
15 Jan 2021	0.63%	1.00
29 Jan 2021	0.43%	1.00
31 Mar 2021	4.23%	1.00	results (8-K), 10-K filed
15 Apr 2021	5.52%	1.38
30 Apr 2021	4.74%	2.59
14 May 2021	4.71%	3.54	results (8-K), 10-Q filed
28 May 2021	4.39%	2.44
15 Jun 2021	3.48%	2.04
30 Jun 2021	3.56%	2.92
15 Jul 2021	3.87%	3.25
30 Jul 2021	3.68%	2.20
13 Aug 2021	3.23%	3.78	10-Q filed
31 Aug 2021	2.45%	3.00
29 Oct 2021	4.69%	2.93
15 Nov 2021	2.52%	3.07	10-Q filed
30 Nov 2021	2.53%	2.92
15 Dec 2021	2.71%	4.25
31 Dec 2021	2.46%	3.75

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.