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HowShorted

How shorted is ADTRAN Holdings, Inc.? ADTN

#276most shorted US stockof 3,805 ranked stocks, more shorted than 92%

15.39%
of shares outstanding reported short · settlement date 15 Sep 2026
vs previous report
−0.46
5 reports (~10 weeks)
−0.14
days to cover
8.03
Aggregate net short position time series for ADTRAN 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 ADTRAN 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
4 Aug 202613.14% 31 Jul 202614.46% 14 Aug 2026+1.32
22 Jul 202615.68% 15 Jul 202613.14% 31 Jul 2026−2.54
5 May 202613.92% 30 Apr 202614.17% 15 May 2026+0.25
26 Feb 202610.00% 13 Feb 20269.28% 27 Feb 2026−0.72
22 Jan 20269.53% 15 Jan 20268.10% 30 Jan 2026−1.43
4 Nov 202510.01% 31 Oct 202510.78% 14 Nov 2025+0.77
5 Aug 20252.41% 31 Jul 20252.14% 15 Aug 2025−0.27
16 Jul 20252.53% 15 Jul 20252.41% 31 Jul 2025−0.12

Fails to deliver

The SEC's fails-to-deliver figure for ADTN: 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
18,017
3 Sep 2026
Highest in window
769,711
1 Jul 2026
Days with a balance
35
Window
16 Sep 2025 to 14 Sep 2026
Aggregate net short position time series for ADTRAN 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 770K shares.

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Sector: Technology

History

Full reported short interest history
Settlement dateShort %Change
15 Sep 202615.39%−0.46
31 Aug 202615.85%+1.39
14 Aug 202614.46%+1.32
31 Jul 202613.14%−2.54
15 Jul 202615.68%+0.15
30 Jun 202615.53%+0.66
15 Jun 202614.87%+0.68
29 May 202614.19%+0.02
15 May 202614.17%+0.25
30 Apr 202613.92%+2.07
15 Apr 202611.85%+1.61
31 Mar 202610.24%−0.25
13 Mar 202610.49%+1.21
27 Feb 20269.28%−0.72
13 Feb 202610.00%+1.90
30 Jan 20268.10%−1.43
15 Jan 20269.53%−0.70
31 Dec 202510.23%−0.53
15 Dec 202510.76%+0.16
28 Nov 202510.60%−0.18
14 Nov 202510.78%+0.77
31 Oct 202510.01%+8.02
15 Sep 20251.99%−0.02
29 Aug 20252.01%−0.13
15 Aug 20252.14%−0.27
31 Jul 20252.41%−0.12
15 Jul 20252.53%−0.13
30 Jun 20252.66%+0.38
13 Jun 20252.28%+0.15
30 May 20252.13%−0.34
15 May 20252.47%−0.41
30 Apr 20252.88%+0.50
15 Apr 20252.38%−0.18
31 Mar 20252.56%+0.72
14 Mar 20251.84%+0.39
28 Feb 20251.45%+0.08
14 Feb 20251.37%+0.16
31 Jan 20251.21%−0.49
15 Jan 20251.70%−0.36
31 Dec 20242.06%+0.60
13 Dec 20241.46%−0.08
29 Nov 20241.54%−0.85
15 Nov 20242.39%−0.26
31 Oct 20242.65%−0.21
15 Oct 20242.86%−0.10
30 Sep 20242.96%−0.37
13 Sep 20243.33%−0.15
30 Aug 20243.48%+0.10
15 Aug 20243.38%−0.09
31 Jul 20243.47%+0.19
15 Jul 20243.28%+0.56
28 Jun 20242.72%−1.53
14 Jun 20244.25%−0.18
31 May 20244.43%−0.20
15 May 20244.63%−0.28
30 Apr 20244.91%+0.72
15 Apr 20244.19%+1.27
28 Mar 20242.92%−0.78
15 Mar 20243.70%−0.24
29 Feb 20243.94%+0.55
15 Feb 20243.39%+0.60
31 Jan 20242.79%−0.04
12 Jan 20242.83%−0.32
29 Dec 20233.15%−0.77
15 Dec 20233.92%−0.11
30 Nov 20234.03%+0.48
15 Nov 20233.55%+0.06
31 Oct 20233.49%+0.02
13 Oct 20233.47%+0.17
29 Sep 20233.30%+0.13
15 Sep 20233.17%+0.10
31 Aug 20233.07%+0.39
15 Aug 20232.68%−0.85
31 Jul 20233.53%−0.03
14 Jul 20233.56%−0.10
30 Jun 20233.66%+0.16
15 Jun 20233.50%+0.55
31 May 20232.95%+0.67
15 May 20232.28%−0.39
28 Apr 20232.67%−0.07
14 Apr 20232.74%+0.06
31 Mar 20232.68%−0.19
15 Mar 20232.87%+0.05
28 Feb 20232.82%−0.04
15 Feb 20232.86%+0.08
31 Jan 20232.78%−0.28
13 Jan 20233.06%−0.17
30 Dec 20223.23%+0.45
15 Dec 20222.78%−0.07
30 Nov 20222.85%+0.12
15 Nov 20222.73%−0.37
31 Oct 20223.10%−0.25
14 Oct 20223.35%+0.29
30 Sep 20223.06%+0.29
15 Sep 20222.77%+0.29
31 Aug 20222.48%−0.45
15 Aug 20222.93%−3.53
29 Jul 20226.46%−0.72
15 Jul 20227.18%+3.28
30 Jun 20223.90%−0.53
15 Jun 20224.43%−0.11
31 May 20224.54%+0.18
13 May 20224.36%+0.45
29 Apr 20223.91%−0.14
14 Apr 20224.05%−0.07
31 Mar 20224.12%−0.16
15 Mar 20224.28%+0.06
28 Feb 20224.22%−0.40
15 Feb 20224.62%−0.07
31 Jan 20224.69%−0.22
14 Jan 20224.91%+1.11
31 Dec 20213.80%+0.19
15 Dec 20213.61%+0.51
30 Nov 20213.10%−0.17
15 Nov 20213.27%−0.13
29 Oct 20213.40%+0.34
15 Oct 20213.06%−0.03
30 Sep 20213.09%0.00
15 Sep 20213.09%+0.46
31 Aug 20212.63%−0.09
13 Aug 20212.72%+0.41
30 Jul 20212.31%+0.46
15 Jul 20211.85%−0.13
30 Jun 20211.98%0.00
15 Jun 20211.98%−0.27
28 May 20212.25%+0.11
14 May 20212.14%−0.13
30 Apr 20212.27%−0.28
15 Apr 20212.55%+0.05
31 Mar 20212.50%−0.54
15 Mar 20213.04%+0.08
26 Feb 20212.96%−0.24
12 Feb 20213.20%−0.04
29 Jan 20213.24%+0.37
15 Jan 20212.87%+0.12
31 Dec 20202.75%+0.72
15 Dec 20202.03%+0.36
30 Nov 20201.67%−0.24
13 Nov 20201.91%−0.20
30 Oct 20202.11%−0.13
15 Oct 20202.24%+0.17
30 Sep 20202.07%−0.03
15 Sep 20202.10%−0.06
31 Aug 20202.16%+0.04
14 Aug 20202.12%+0.04
31 Jul 20202.08%+0.30
15 Jul 20201.78%+0.06
30 Jun 20201.72%−0.07
15 Jun 20201.79%−0.16
29 May 20201.95%+0.02
15 May 20201.93%+0.35
30 Apr 20201.58%−0.66
15 Apr 20202.24%+0.49
31 Mar 20201.75%−0.02
13 Mar 20201.77%−0.58
28 Feb 20202.35%+0.95
14 Feb 20201.40%+0.02
31 Jan 20201.38%−0.57
15 Jan 20201.95%+0.25
31 Dec 20191.70%+0.01
13 Dec 20191.69%+0.14
29 Nov 20191.55%−0.02
15 Nov 20191.57%+0.23
31 Oct 20191.34%−0.37
15 Oct 20191.71%−0.07
30 Sep 20191.78%0.00
13 Sep 20191.78%+0.20
30 Aug 20191.58%−0.07
15 Aug 20191.65%+0.66
31 Jul 20190.99%−0.87
15 Jul 20191.86%−0.33
28 Jun 20192.19%−0.14
14 Jun 20192.33%−0.21
31 May 20192.54%−0.63
15 May 20193.17%+0.86
30 Apr 20192.31%−0.21
15 Apr 20192.52%−0.19
29 Mar 20192.71%−0.09
15 Mar 20192.80%+0.23
28 Feb 20192.57%+0.24
15 Feb 20192.33%+0.14
31 Jan 20192.19%+0.18
15 Jan 20192.01%+0.07
31 Dec 20181.94%+0.11
14 Dec 20181.83%−0.15
30 Nov 20181.98%−0.13
15 Nov 20182.11%−0.28
31 Oct 20182.39%−0.37
15 Oct 20182.76%−0.22
28 Sep 20182.98%−0.12
14 Sep 20183.10%+0.16
31 Aug 20182.94%+0.17
15 Aug 20182.77%−0.58
31 Jul 20183.35%+0.31
13 Jul 20183.04%+0.05
29 Jun 20182.99%−0.05
15 Jun 20183.04%−0.07
31 May 20183.11%−0.36
15 May 20183.47%+0.16
30 Apr 20183.31%+0.56
13 Apr 20182.75%0.00
29 Mar 20182.75%+1.08
15 Mar 20181.67%+0.11
28 Feb 20181.56%−0.41
15 Feb 20181.97%−0.64
31 Jan 20182.61%+1.28
12 Jan 20181.33%−0.38
29 Dec 20171.71%–

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

Frequently asked questions

How shorted is ADTRAN Holdings, Inc. right now?
15.39% of ADTRAN Holdings, Inc.'s (ADTN) shares outstanding were reported short for settlement date 15 Sep 2026, per FINRA's consolidated short interest report. That makes it the 276th 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 ADTN'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 ADTN's days to cover?
8.03 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.