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HowShorted

How shorted is Tenable Holdings, Inc.? TENB

#239most shorted US stockof 3,805 ranked stocks, more shorted than 93%

16.51%
of shares outstanding reported short · settlement date 15 Sep 2026
vs previous report
+2.72
5 reports (~10 weeks)
+6.44
days to cover
3.03
Aggregate net short position time series for Tenable Holdings, 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 Tenable Holdings, 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
29 Jul 20269.64% 15 Jul 20269.26% 31 Jul 2026−0.38
29 Apr 202613.73% 15 Apr 202612.88% 30 Apr 2026−0.85
4 Feb 20265.68% 30 Jan 20264.99% 13 Feb 2026−0.69
29 Oct 20254.28% 15 Oct 20254.35% 31 Oct 2025+0.07
30 Jul 20255.75% 15 Jul 20255.35% 31 Jul 2025−0.40
29 Apr 20253.63% 15 Apr 20253.54% 30 Apr 2025−0.09
7 Feb 20253.04% 31 Jan 20253.40% 14 Feb 2025+0.36
5 Feb 20253.04% 31 Jan 20253.40% 14 Feb 2025+0.36

Fails to deliver

The SEC's fails-to-deliver figure for TENB: 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.

Latest balance
28,908
14 Sep 2026
Highest in window
148,612
11 Feb 2026
Days with a balance
46
Window
16 Sep 2025 to 14 Sep 2026
Aggregate net short position time series for Tenable Holdings, 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 149K shares.

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Sector: Technology

History

Full reported short interest history
Settlement dateShort %Change
15 Sep 202616.51%+2.72
31 Aug 202613.79%+4.26
14 Aug 20269.53%+0.27
31 Jul 20269.26%−0.38
15 Jul 20269.64%−0.43
30 Jun 202610.07%−0.38
15 Jun 202610.45%−0.55
29 May 202611.00%−3.13
15 May 202614.13%+1.25
30 Apr 202612.88%−0.85
15 Apr 202613.73%+1.41
31 Mar 202612.32%+4.45
13 Mar 20267.87%+2.14
27 Feb 20265.73%+0.74
13 Feb 20264.99%−0.69
30 Jan 20265.68%+1.04
15 Jan 20264.64%+0.49
31 Dec 20254.15%−0.27
15 Dec 20254.42%−0.32
28 Nov 20254.74%+0.19
14 Nov 20254.55%+0.20
31 Oct 20254.35%+0.07
15 Oct 20254.28%+0.22
30 Sep 20254.06%−0.22
15 Sep 20254.28%+0.10
29 Aug 20254.18%−0.38
15 Aug 20254.56%−0.79
31 Jul 20255.35%−0.40
15 Jul 20255.75%+0.72
30 Jun 20255.03%+1.11
13 Jun 20253.92%+0.30
30 May 20253.62%−0.11
15 May 20253.73%+0.19
30 Apr 20253.54%−0.09
15 Apr 20253.63%+0.28
31 Mar 20253.35%+0.21
14 Mar 20253.14%+0.02
28 Feb 20253.12%−0.28
14 Feb 20253.40%+0.36
31 Jan 20253.04%+0.03
15 Jan 20253.01%−0.05
31 Dec 20243.06%+0.17
13 Dec 20242.89%−0.30
29 Nov 20243.19%+0.05
15 Nov 20243.14%−0.42
31 Oct 20243.56%−0.20
15 Oct 20243.76%+0.36
30 Sep 20243.40%−0.39
13 Sep 20243.79%+0.09
30 Aug 20243.70%−0.13
15 Aug 20243.83%+0.04
31 Jul 20243.79%+0.26
15 Jul 20243.53%+0.43
28 Jun 20243.10%+0.29
14 Jun 20242.81%+0.07
31 May 20242.74%−0.24
15 May 20242.98%−0.54
30 Apr 20243.52%−0.49
15 Apr 20244.01%−0.21
28 Mar 20244.22%−0.23
15 Mar 20244.45%+0.12
29 Feb 20244.33%+0.67
15 Feb 20243.66%+0.30
31 Jan 20243.36%+0.67
12 Jan 20242.69%−0.42
29 Dec 20233.11%+0.56
15 Dec 20232.55%+0.28
30 Nov 20232.27%+0.30
15 Nov 20231.97%−0.51
31 Oct 20232.48%−0.20
13 Oct 20232.68%+0.01
29 Sep 20232.67%+0.15
15 Sep 20232.52%−0.02
31 Aug 20232.54%−0.16
15 Aug 20232.70%+0.24
31 Jul 20232.46%+0.27
14 Jul 20232.19%−0.25
30 Jun 20232.44%+0.14
15 Jun 20232.30%−0.06
31 May 20232.36%+0.01
15 May 20232.35%−0.77
28 Apr 20233.12%−0.21
14 Apr 20233.33%−0.05
31 Mar 20233.38%−0.20
15 Mar 20233.58%+0.13
28 Feb 20233.45%−0.13
15 Feb 20233.58%+0.24
31 Jan 20233.34%+0.01
13 Jan 20233.33%+0.21
30 Dec 20223.12%+0.48
15 Dec 20222.64%−0.10
30 Nov 20222.74%+0.08
15 Nov 20222.66%+0.34
31 Oct 20222.32%−0.17
14 Oct 20222.49%+0.16
30 Sep 20222.33%+0.04
15 Sep 20222.29%+0.21
31 Aug 20222.08%−0.05
15 Aug 20222.13%−0.53
29 Jul 20222.66%−0.60
15 Jul 20223.26%−0.34
30 Jun 20223.60%+0.08
15 Jun 20223.52%+0.10
31 May 20223.42%+0.41
13 May 20223.01%+0.60
29 Apr 20222.41%+0.14
14 Apr 20222.27%+0.23
31 Mar 20222.04%−0.24
15 Mar 20222.28%+0.23
28 Feb 20222.05%−0.05
15 Feb 20222.10%+0.57
31 Jan 20221.53%+0.26
14 Jan 20221.27%−0.62
31 Dec 20211.89%−0.38
15 Dec 20212.27%+0.97
30 Nov 20211.30%−0.45
15 Nov 20211.75%−0.97
29 Oct 20212.72%−0.40
15 Oct 20213.12%+0.07
30 Sep 20213.05%+0.36
15 Sep 20212.69%−0.11
31 Aug 20212.80%−0.06
13 Aug 20212.86%+0.35
30 Jul 20212.51%+0.02
15 Jul 20212.49%−0.23
30 Jun 20212.72%+0.05
15 Jun 20212.67%+0.34
28 May 20212.33%−0.05
14 May 20212.38%−0.57
30 Apr 20212.95%+0.47
15 Apr 20212.48%+0.51
31 Mar 20211.97%−0.55
15 Mar 20212.52%−0.92
26 Feb 20213.44%+0.56
12 Feb 20212.88%+0.46
29 Jan 20212.42%−0.16
15 Jan 20212.58%−0.18
31 Dec 20202.76%−0.28
15 Dec 20203.04%+0.30
30 Nov 20202.74%−0.10
13 Nov 20202.84%−0.32
30 Oct 20203.16%+1.14
15 Oct 20202.02%−0.60
30 Sep 20202.62%+0.10
15 Sep 20202.52%+0.07
31 Aug 20202.45%−0.30
14 Aug 20202.75%+0.61
31 Jul 20202.14%−0.06
15 Jul 20202.20%−0.15
30 Jun 20202.35%+0.49
15 Jun 20201.86%+0.65
29 May 20201.21%+0.10
15 May 20201.11%−0.32
30 Apr 20201.43%−0.22
15 Apr 20201.65%−0.52
31 Mar 20202.17%−0.09
13 Mar 20202.26%+0.60
28 Feb 20201.66%−0.36
14 Feb 20202.02%+0.50
31 Jan 20201.52%+0.07
15 Jan 20201.45%−0.21
31 Dec 20191.66%+0.01
13 Dec 20191.65%−0.50
29 Nov 20192.15%−0.01
15 Nov 20192.16%−0.09
31 Oct 20192.25%−0.38
15 Oct 20192.63%–

Newest first. Scroll inside the table for earlier dates, back to 15 Oct 2019.

Frequently asked questions

How shorted is Tenable Holdings, Inc. right now?
16.51% of Tenable Holdings, Inc.'s (TENB) shares outstanding were reported short for settlement date 15 Sep 2026, per FINRA's consolidated short interest report. That makes it the 239th 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 TENB'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 TENB's days to cover?
3.03 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.