Skip to content
HowShorted

How shorted is HUDSON TECHNOLOGIES INC? HDSN

#1,210most shorted US stockof 3,805 ranked stocks, more shorted than 68%

6.74%
of shares outstanding reported short · settlement date 15 Sep 2026
vs previous report
−0.79
5 reports (~10 weeks)
+2.33
days to cover
6.44
Aggregate net short position time series for HUDSON TECHNOLOGIES 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 HUDSON TECHNOLOGIES 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
5 Aug 20264.88% 31 Jul 20265.33% 14 Aug 2026+0.45
6 May 20263.23% 30 Apr 20263.65% 15 May 2026+0.42
4 Mar 20263.00% 27 Feb 20263.08% 13 Mar 2026+0.08
5 Nov 20252.12% 31 Oct 20252.42% 14 Nov 2025+0.30
3 Nov 20252.12% 31 Oct 20252.42% 14 Nov 2025+0.30
30 Jul 20253.51% 15 Jul 20253.48% 31 Jul 2025−0.03
7 May 20252.78% 30 Apr 20252.52% 15 May 2025−0.26
6 Mar 20251.32% 28 Feb 20251.73% 14 Mar 2025+0.41

Fails to deliver

The SEC's fails-to-deliver figure for HDSN: 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
727
8 Sep 2026
Highest in window
91,992
11 Mar 2026
Days with a balance
27
Window
16 Sep 2025 to 14 Sep 2026
Aggregate net short position time series for HUDSON TECHNOLOGIES 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 92K shares.

Embed this chart

Paste this snippet to embed the interactive chart. It updates with each FINRA report and keeps the source attribution. Preview

Download chart cardShare on XRedditLinkedIn
Cite this page
Plain
Wikipedia
BibTeX

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

History

Full reported short interest history
Settlement dateShort %Change
15 Sep 20266.74%−0.79
31 Aug 20267.53%+2.20
14 Aug 20265.33%+0.45
31 Jul 20264.88%−0.06
15 Jul 20264.94%+0.53
30 Jun 20264.41%+0.42
15 Jun 20263.99%+0.03
29 May 20263.96%+0.31
15 May 20263.65%+0.42
30 Apr 20263.23%+0.16
15 Apr 20263.07%−0.02
31 Mar 20263.09%+0.01
13 Mar 20263.08%+0.08
27 Feb 20263.00%+0.14
13 Feb 20262.86%+0.07
30 Jan 20262.79%+0.23
15 Jan 20262.56%−0.13
31 Dec 20252.69%+0.15
15 Dec 20252.54%−0.39
28 Nov 20252.93%+0.51
14 Nov 20252.42%+0.30
31 Oct 20252.12%−0.09
15 Oct 20252.21%−0.10
30 Sep 20252.31%−0.14
15 Sep 20252.45%−0.14
29 Aug 20252.59%−0.17
15 Aug 20252.76%−0.72
31 Jul 20253.48%−0.03
15 Jul 20253.51%+0.54
30 Jun 20252.97%−0.49
13 Jun 20253.46%+0.82
30 May 20252.64%+0.12
15 May 20252.52%−0.26
30 Apr 20252.78%+0.97
15 Apr 20251.81%+0.05
31 Mar 20251.76%+0.03
14 Mar 20251.73%+0.41
28 Feb 20251.32%+0.12
14 Feb 20251.20%+0.05
31 Jan 20251.15%+0.03
15 Jan 20251.12%−0.01
31 Dec 20241.13%−0.05
13 Dec 20241.18%−0.23
29 Nov 20241.41%+0.34
15 Nov 20241.07%−0.55
31 Oct 20241.62%−0.16
15 Oct 20241.78%−0.17
30 Sep 20241.95%−0.15
13 Sep 20242.10%−0.29
30 Aug 20242.39%−0.32
15 Aug 20242.71%−0.38
31 Jul 20243.09%−0.17
15 Jul 20243.26%+0.16
28 Jun 20243.10%0.00
14 Jun 20243.10%+0.80
31 May 20242.30%+0.08
15 May 20242.22%−0.18
30 Apr 20242.40%+0.01
15 Apr 20242.39%+0.21
28 Mar 20242.18%+0.18
15 Mar 20242.00%−0.15
29 Feb 20242.15%+0.12
15 Feb 20242.03%−0.06
31 Jan 20242.09%−0.17
12 Jan 20242.26%+0.18
29 Dec 20232.08%−0.07
15 Dec 20232.15%+0.15
30 Nov 20232.00%−0.10
15 Nov 20232.10%+0.16
31 Oct 20231.94%−0.13
13 Oct 20232.07%0.00
29 Sep 20232.07%+0.04
15 Sep 20232.03%+0.16
31 Aug 20231.87%−0.35
15 Aug 20232.22%+0.70
31 Jul 20231.52%−0.42
14 Jul 20231.94%−0.31
30 Jun 20232.25%−0.92
15 Jun 20233.17%−0.26
31 May 20233.43%+0.60
15 May 20232.83%+0.52
28 Apr 20232.31%−0.21
14 Apr 20232.52%−0.60
31 Mar 20233.12%+0.15
15 Mar 20232.97%+0.79
28 Feb 20232.18%0.00
15 Feb 20232.18%+0.15
31 Jan 20232.03%−1.05
13 Jan 20233.08%+0.98
30 Dec 20222.10%−1.16
15 Dec 20223.26%+1.08
30 Nov 20222.18%−0.24
15 Nov 20222.42%−0.61
31 Oct 20223.03%−0.26
14 Oct 20223.29%−0.89
30 Sep 20224.18%+1.28
15 Sep 20222.90%−0.53
31 Aug 20223.43%+0.01
15 Aug 20223.42%−0.44
29 Jul 20223.86%−0.17
15 Jul 20224.03%+0.79
30 Jun 20223.24%+0.28
15 Jun 20222.96%−0.03
31 May 20222.99%+0.02
13 May 20222.97%+1.52
29 Apr 20221.45%−0.14
14 Apr 20221.59%+0.27
31 Mar 20221.32%+0.35
15 Mar 20220.97%+0.26
28 Feb 20220.71%−0.12
15 Feb 20220.83%+0.13
31 Jan 20220.70%+0.06
14 Jan 20220.64%−0.03
31 Dec 20210.67%+0.10
15 Dec 20210.57%+0.05
30 Nov 20210.52%+0.02
15 Nov 20210.50%−0.04
29 Oct 20210.54%−0.25
15 Oct 20210.79%−0.33
30 Sep 20211.12%−0.01
15 Sep 20211.13%+0.14
31 Aug 20210.99%+0.28
13 Aug 20210.71%−0.19
30 Jul 20210.90%−0.20
15 Jul 20211.10%+0.19
30 Jun 20210.91%+0.03
15 Jun 20210.88%+0.06
28 May 20210.82%−0.79
14 May 20211.61%+0.21
30 Apr 20211.40%−0.55
15 Apr 20211.95%+0.56
31 Mar 20211.39%+0.08
15 Mar 20211.31%−0.55
26 Feb 20211.86%+0.20
12 Feb 20211.66%−0.66
29 Jan 20212.32%+0.50
15 Jan 20211.82%−0.16
31 Dec 20201.98%−0.27
15 Dec 20202.25%−0.12
30 Nov 20202.37%−0.92
13 Nov 20203.29%+0.11
30 Oct 20203.18%−0.03
15 Oct 20203.21%−0.06
30 Sep 20203.27%−0.37
15 Sep 20203.64%−0.27
31 Aug 20203.91%−1.02
14 Aug 20204.93%+0.03
31 Jul 20204.90%−0.13
15 Jul 20205.03%−0.01
30 Jun 20205.04%−0.05
15 Jun 20205.09%−0.81
29 May 20205.90%−0.46
15 May 20206.36%−0.46
30 Apr 20206.82%−0.25
15 Apr 20207.07%−0.24
31 Mar 20207.31%−0.89
13 Mar 20208.20%−0.36
28 Feb 20208.56%+0.03
14 Feb 20208.53%+0.16
31 Jan 20208.37%−1.36
15 Jan 20209.73%−0.35
31 Dec 201910.08%−0.59
13 Dec 201910.67%+1.12
29 Nov 20199.55%−1.47
15 Nov 201911.02%−0.09
31 Oct 201911.11%−1.91
15 Oct 201913.02%−0.66
30 Sep 201913.68%−0.96
13 Sep 201914.64%+0.66
30 Aug 201913.98%−1.13
15 Aug 201915.11%+0.94
31 Jul 201914.17%+1.43
15 Jul 201912.74%+0.71
28 Jun 201912.03%−0.09
14 Jun 201912.12%−0.09
31 May 201912.21%−0.42
15 May 201912.63%−0.52
30 Apr 201913.15%+0.35
15 Apr 201912.80%−0.21
29 Mar 201913.01%−1.33
15 Mar 201914.34%+1.07
28 Feb 201913.27%−1.49
15 Feb 201914.76%−0.52
31 Jan 201915.28%−0.98
15 Jan 201916.26%+0.81
31 Dec 201815.45%−0.70
14 Dec 201816.15%−0.09
30 Nov 201816.24%−0.45
15 Nov 201816.69%−0.40
31 Oct 201817.09%+0.09
15 Oct 201817.00%−0.41
28 Sep 201817.41%−2.88
14 Sep 201820.29%+1.18
31 Aug 201819.11%−0.41
15 Aug 201819.52%+0.08
31 Jul 201819.44%+0.71
13 Jul 201818.73%−0.37
29 Jun 201819.10%−0.94
15 Jun 201820.04%+1.17
31 May 201818.87%+0.83
15 May 201818.04%−1.35
30 Apr 201819.39%+1.89
13 Apr 201817.50%+1.00
29 Mar 201816.50%+3.97
15 Mar 201812.53%−3.41
28 Feb 201815.94%+2.25
15 Feb 201813.69%+0.44
31 Jan 201813.25%+0.64
12 Jan 201812.61%+0.17
29 Dec 201712.44%–

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

Frequently asked questions

How shorted is HUDSON TECHNOLOGIES INC right now?
6.74% of HUDSON TECHNOLOGIES INC's (HDSN) shares outstanding were reported short for settlement date 15 Sep 2026, per FINRA's consolidated short interest report. That makes it the 1,210th 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 HDSN'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 HDSN's days to cover?
6.44 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.