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HowShorted

How shorted is A10 NETWORKS INC? ATEN

#384most shorted US stockof 3,805 ranked stocks, more shorted than 89%

13.38%
of shares outstanding reported short · settlement date 15 Sep 2026
vs previous report
+1.07
5 reports (~10 weeks)
+3.42
days to cover
9.88
Aggregate net short position time series for A10 NETWORKS 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 A10 NETWORKS 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 202610.49% 31 Jul 202610.39% 14 Aug 2026−0.10
28 Apr 20267.58% 15 Apr 20268.37% 30 Apr 2026+0.79
4 Feb 20268.09% 30 Jan 20268.47% 13 Feb 2026+0.38
4 Nov 20259.11% 31 Oct 20259.60% 14 Nov 2025+0.49
5 Aug 20258.10% 31 Jul 20258.28% 15 Aug 2025+0.18
1 May 20257.39% 30 Apr 20258.94% 15 May 2025+1.55
4 Feb 20252.44% 31 Jan 20251.99% 14 Feb 2025−0.45
7 Nov 20241.67% 31 Oct 20241.42% 15 Nov 2024−0.25

Fails to deliver

The SEC's fails-to-deliver figure for ATEN: 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
5,152
14 Sep 2026
Highest in window
79,860
17 Apr 2026
Days with a balance
35
Window
16 Sep 2025 to 14 Sep 2026
Aggregate net short position time series for A10 NETWORKS 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 80K shares.

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Sector: Technology

History

Full reported short interest history
Settlement dateShort %Change
15 Sep 202613.38%+1.07
31 Aug 202612.31%+1.92
14 Aug 202610.39%−0.10
31 Jul 202610.49%+0.98
15 Jul 20269.51%−0.45
30 Jun 20269.96%+1.44
15 Jun 20268.52%−0.14
29 May 20268.66%−0.99
15 May 20269.65%+1.28
30 Apr 20268.37%+0.79
15 Apr 20267.58%+0.35
31 Mar 20267.23%−0.08
13 Mar 20267.31%−0.02
27 Feb 20267.33%−1.14
13 Feb 20268.47%+0.38
30 Jan 20268.09%−0.23
15 Jan 20268.32%+0.19
31 Dec 20258.13%+0.35
15 Dec 20257.78%+0.53
28 Nov 20257.25%−2.35
14 Nov 20259.60%+0.49
31 Oct 20259.11%+0.40
15 Oct 20258.71%+0.24
30 Sep 20258.47%+0.27
15 Sep 20258.20%+0.70
29 Aug 20257.50%−0.78
15 Aug 20258.28%+0.18
31 Jul 20258.10%−0.26
15 Jul 20258.36%−0.03
30 Jun 20258.39%+0.58
13 Jun 20257.81%−0.03
30 May 20257.84%−1.10
15 May 20258.94%+1.55
30 Apr 20257.39%−0.76
15 Apr 20258.15%+0.41
31 Mar 20257.74%+3.04
14 Mar 20254.70%+2.03
28 Feb 20252.67%+0.68
14 Feb 20251.99%−0.45
31 Jan 20252.44%−0.27
15 Jan 20252.71%+0.17
31 Dec 20242.54%+0.29
13 Dec 20242.25%+0.16
29 Nov 20242.09%+0.67
15 Nov 20241.42%−0.25
31 Oct 20241.67%−0.15
15 Oct 20241.82%−0.28
30 Sep 20242.10%−1.29
13 Sep 20243.39%+0.07
30 Aug 20243.32%−0.48
15 Aug 20243.80%+0.19
31 Jul 20243.61%−0.11
15 Jul 20243.72%+0.94
28 Jun 20242.78%−1.20
14 Jun 20243.98%+0.68
31 May 20243.30%−0.17
15 May 20243.47%−0.68
30 Apr 20244.15%+0.11
15 Apr 20244.04%−0.49
28 Mar 20244.53%+1.05
15 Mar 20243.48%−0.90
29 Feb 20244.38%+0.38
15 Feb 20244.00%+0.06
31 Jan 20243.94%−0.21
12 Jan 20244.15%−0.06
29 Dec 20234.21%−0.17
15 Dec 20234.38%+0.51
30 Nov 20233.87%+0.26
15 Nov 20233.61%+0.49
31 Oct 20233.12%+0.33
13 Oct 20232.79%−0.32
29 Sep 20233.11%+0.60
15 Sep 20232.51%+0.05
31 Aug 20232.46%−0.32
15 Aug 20232.78%−0.51
31 Jul 20233.29%−0.15
14 Jul 20233.44%+0.41
30 Jun 20233.03%+0.23
15 Jun 20232.80%−0.10
31 May 20232.90%+0.33
15 May 20232.57%−0.29
28 Apr 20232.86%+0.18
14 Apr 20232.68%−0.01
31 Mar 20232.69%−0.95
15 Mar 20233.64%−0.82
28 Feb 20234.46%+0.57
15 Feb 20233.89%−0.84
31 Jan 20234.73%−0.52
13 Jan 20235.25%+0.27
30 Dec 20224.98%+0.48
15 Dec 20224.50%−0.43
30 Nov 20224.93%−0.59
15 Nov 20225.52%+0.75
31 Oct 20224.77%−0.08
14 Oct 20224.85%−0.14
30 Sep 20224.99%+0.46
15 Sep 20224.53%−0.32
31 Aug 20224.85%−0.23
15 Aug 20225.08%−1.00
29 Jul 20226.08%−0.04
15 Jul 20226.12%+0.14
30 Jun 20225.98%+0.23
15 Jun 20225.75%+0.10
31 May 20225.65%−1.19
13 May 20226.84%+0.48
29 Apr 20226.36%+4.21
14 Apr 20222.15%+0.20
31 Mar 20221.95%−0.72
15 Mar 20222.67%+0.36
28 Feb 20222.31%+0.24
15 Feb 20222.07%+0.08
31 Jan 20221.99%+0.43
14 Jan 20221.56%−0.10
31 Dec 20211.66%−0.29
15 Dec 20211.95%+0.56
30 Nov 20211.39%−0.25
15 Nov 20211.64%−0.92
29 Oct 20212.56%+0.52
15 Oct 20212.04%−0.58
30 Sep 20212.62%−0.10
15 Sep 20212.72%−0.02
31 Aug 20212.74%−0.33
13 Aug 20213.07%−0.62
30 Jul 20213.69%−0.22
15 Jul 20213.91%+0.59
30 Jun 20213.32%+0.21
15 Jun 20213.11%−0.38
28 May 20213.49%+0.01
14 May 20213.48%+0.18
30 Apr 20213.30%+0.29
15 Apr 20213.01%+0.01
31 Mar 20213.00%−0.80
15 Mar 20213.80%−0.28
26 Feb 20214.08%+0.53
12 Feb 20213.55%+0.81
29 Jan 20212.74%−0.06
15 Jan 20212.80%+0.31
31 Dec 20202.49%+0.17
15 Dec 20202.32%−0.12
30 Nov 20202.44%−0.10
13 Nov 20202.54%−0.03
30 Oct 20202.57%+0.65
15 Oct 20201.92%+0.05
30 Sep 20201.87%−0.08
15 Sep 20201.95%+0.03
31 Aug 20201.92%+0.11
14 Aug 20201.81%+0.51
31 Jul 20201.30%+0.68
15 Jun 20200.62%−0.34
29 May 20200.96%0.00
15 May 20200.96%−0.06
30 Apr 20201.02%−0.14
15 Apr 20201.16%+0.16
31 Mar 20201.00%−0.03
13 Mar 20201.03%0.00
28 Feb 20201.03%+0.02
14 Feb 20201.01%−0.07
31 Jan 20201.08%−0.01
15 Jan 20201.09%+0.01
31 Dec 20191.08%+0.02
13 Dec 20191.06%+0.01
29 Nov 20191.05%−0.23
15 Nov 20191.28%−0.46
31 Oct 20191.74%+0.15
15 Oct 20191.59%+0.31
30 Sep 20191.28%−0.09
13 Sep 20191.37%+0.09
30 Aug 20191.28%+0.01
15 Aug 20191.27%−0.48
31 Jul 20191.75%+0.23
15 Jul 20191.52%−0.07
28 Jun 20191.59%+0.04
14 Jun 20191.55%−0.64
31 May 20192.19%+0.45
15 May 20191.74%+0.60
30 Apr 20191.14%−0.15
15 Apr 20191.29%+0.05
29 Mar 20191.24%−0.42
15 Mar 20191.66%+0.48
28 Feb 20191.18%−0.17
15 Feb 20191.35%+0.18
31 Jan 20191.17%−0.17
15 Jan 20191.34%−0.02
31 Dec 20181.36%+0.03
14 Dec 20181.33%−0.16
30 Nov 20181.49%−0.06
15 Nov 20181.55%−0.08
31 Oct 20181.63%+0.05
15 Oct 20181.58%+0.27
13 Jul 20181.31%−0.18
29 Jun 20181.49%−0.02
15 Jun 20181.51%−0.26
31 May 20181.77%−0.12
15 May 20181.89%−0.22
30 Apr 20182.11%−0.09
13 Apr 20182.20%−0.32
29 Mar 20182.52%+0.82
15 Mar 20181.70%−0.37
28 Feb 20182.07%+0.28
15 Feb 20181.79%+0.36
31 Jan 20181.43%+0.09
12 Jan 20181.34%+0.05
29 Dec 20171.29%–

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

Frequently asked questions

How shorted is A10 NETWORKS INC right now?
13.38% of A10 NETWORKS INC's (ATEN) shares outstanding were reported short for settlement date 15 Sep 2026, per FINRA's consolidated short interest report. That makes it the 384th 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 ATEN'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 ATEN's days to cover?
9.88 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.