Ultra Clean Holdings, Inc. short interest in 2021

In 2021, Ultra Clean Holdings, Inc.'s disclosed short interest ran from 3.65% of shares outstanding on 15 Jan 2021 to 1.36% on 31 Dec 2021, a change of -2.29 percentage points. The year's high was 3.65% on 15 Jan 2021 and its low 1.34% on 15 Dec 2021, averaging 2.54% across 24 twice-monthly settlement dates. FINRA's days-to-cover figure peaked at 3.65 days on 15 Oct 2021. Full history: Ultra Clean Holdings, Inc..

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Plain

Short position data for Ultra Clean Holdings, Inc. short interest in 2021: FINRA, compiled by howshorted.com, settlement date 31 Dec 2021. https://howshorted.com/us/company/uctt/2021/

Wikipedia

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

BibTeX

@misc{howshorted-ultra-clean-holdings-inc-short-interest--2021-12-31,
  title        = {Ultra Clean Holdings, Inc. short interest in 2021 short position data},
  author       = {{HowShorted}},
  howpublished = {\url{https://howshorted.com/us/company/uctt/2021/}},
  note         = {Data: FINRA, settlement date 31 Dec 2021; accessed 2026-10-13},
  year         = {2021}
}

By year: 2018 · 2019 · 2020 · 2021 · 2022 · 2023 · 2024 · 2025 · 2026

2021 in figures

Start of year: 3.65% (15 Jan 2021)
End of year: 1.36% (31 Dec 2021)
Change: -2.29 pp
High: 3.65% (15 Jan 2021)
Low: 1.34% (15 Dec 2021)
Average: 2.54%
Highest days to cover: 3.65 (15 Oct 2021)
SEC filings marked: 8

Every report in 2021

Ultra Clean Holdings, Inc. short interest in 2021
Settlement	Short interest	Days to cover	Filings since previous
15 Jan 2021	3.65%	2.99
29 Jan 2021	3.35%	3.43
12 Feb 2021	3.52%	3.63
26 Feb 2021	3.45%	2.59	results (8-K), 10-K filed
15 Mar 2021	3.45%	2.81
31 Mar 2021	3.26%	2.46
15 Apr 2021	2.78%	1.00
30 Apr 2021	2.52%	1.77	results (8-K)
14 May 2021	3.01%	1.76	10-Q filed
28 May 2021	2.65%	3.04
15 Jun 2021	2.47%	2.88
30 Jun 2021	2.28%	2.15
15 Jul 2021	2.18%	2.43
30 Jul 2021	2.30%	2.15
13 Aug 2021	2.80%	1.60	results (8-K), 10-Q filed
31 Aug 2021	2.20%	2.13
15 Sep 2021	2.26%	3.35
30 Sep 2021	2.17%	2.91
15 Oct 2021	2.35%	3.65
29 Oct 2021	2.42%	2.64	results (8-K)
15 Nov 2021	1.75%	1.85	10-Q filed
30 Nov 2021	1.50%	1.91
15 Dec 2021	1.34%	1.82
31 Dec 2021	1.36%	1.97

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.