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How shorted was Aspen Technology, Inc.? AZPN

Aspen Technology, Inc. left the US market in 2025. This page is a frozen archive of its reported short interest, ending 28 Feb 2025. The ticker AZPN no longer refers to this company and may since have been reassigned.
2.53%
of shares outstanding reported short · settlement date 28 Feb 2025
vs previous report
0.00
5 reports (~10 weeks)
+0.59
days to cover
2.32
Aggregate net short position time series for Aspen Technology, 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 Aspen Technology, 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
4 Feb 20251.90% 31 Jan 20252.53% 14 Feb 2025+0.63
4 Nov 20242.14% 31 Oct 20241.87% 15 Nov 2024−0.27
6 Aug 20241.91% 31 Jul 20242.13% 15 Aug 2024+0.22
7 May 20242.39% 30 Apr 20242.30% 15 May 2024−0.09
6 Feb 20242.07% 31 Jan 20241.97% 15 Feb 2024−0.10
6 Nov 20232.18% 31 Oct 20232.27% 15 Nov 2023+0.09
1 Aug 20231.64% 31 Jul 20231.60% 15 Aug 2023−0.04
26 Apr 20231.59% 14 Apr 20231.44% 28 Apr 2023−0.15
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Sector: Technology

History

Full reported short interest history
Settlement dateShort %Change
28 Feb 20252.53%0.00
14 Feb 20252.53%+0.63
31 Jan 20251.90%−0.35
15 Jan 20252.25%+0.26
31 Dec 20241.99%+0.05
13 Dec 20241.94%+0.33
29 Nov 20241.61%−0.26
15 Nov 20241.87%−0.27
31 Oct 20242.14%+0.05
15 Oct 20242.09%−0.20
30 Sep 20242.29%−0.03
13 Sep 20242.32%+0.19
30 Aug 20242.13%0.00
15 Aug 20242.13%+0.22
31 Jul 20241.91%−0.21
15 Jul 20242.12%−0.19
28 Jun 20242.31%−0.02
14 Jun 20242.33%+0.13
31 May 20242.20%−0.10
15 May 20242.30%−0.09
30 Apr 20242.39%+0.07
15 Apr 20242.32%+0.03
28 Mar 20242.29%+0.13
15 Mar 20242.16%+0.11
29 Feb 20242.05%+0.08
15 Feb 20241.97%−0.10
31 Jan 20242.07%−0.08
12 Jan 20242.15%−0.12
29 Dec 20232.27%−0.34
15 Dec 20232.61%+0.37
30 Nov 20232.24%−0.03
15 Nov 20232.27%+0.09
31 Oct 20232.18%+0.11
13 Oct 20232.07%+0.11
29 Sep 20231.96%+0.19
15 Sep 20231.77%+0.19
31 Aug 20231.58%−0.02
15 Aug 20231.60%−0.04
31 Jul 20231.64%−0.10
14 Jul 20231.74%+0.14
30 Jun 20231.60%−0.31
15 Jun 20231.91%−0.14
31 May 20232.05%−0.26
15 May 20232.31%+0.87
28 Apr 20231.44%−0.15
14 Apr 20231.59%−0.02
31 Mar 20231.61%−0.05
15 Mar 20231.66%+0.07
28 Feb 20231.59%+0.11
15 Feb 20231.48%+0.13
31 Jan 20231.35%−0.04
13 Jan 20231.39%+0.01
30 Dec 20221.38%−0.06
15 Dec 20221.44%−0.10
30 Nov 20221.54%+0.13
15 Nov 20221.41%−0.19
31 Oct 20221.60%+0.18
14 Oct 20221.42%−0.09
30 Sep 20221.51%+0.48
15 Sep 20221.03%+0.17
31 Aug 20220.86%+0.05
15 Aug 20220.81%–

Newest first. Scroll inside the table for earlier dates, back to 15 Aug 2022.

Frequently asked questions

How shorted was Aspen Technology, Inc.?
Aspen Technology, Inc. left the US market in 2025. Its final reported figure was 2.53% of shares outstanding for settlement date 28 Feb 2025, per FINRA's consolidated short interest report; this page preserves its full history.
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 AZPN'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 AZPN's days to cover?
2.32 days for settlement date 28 Feb 2025: 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.