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HowShorted

How shorted is Koppers Holdings, Inc.? KOP

#2,028most shorted US stockof 3,805 ranked stocks, more shorted than 46%

4.07%
of shares outstanding reported short · settlement date 15 Sep 2026
vs previous report
−0.96
5 reports (~10 weeks)
−0.22
days to cover
4.75
Aggregate net short position time series for Koppers 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 Koppers 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
6 Aug 20263.77% 31 Jul 20264.13% 14 Aug 2026+0.36
8 May 20264.48% 30 Apr 20264.38% 15 May 2026−0.10
26 Feb 20265.33% 13 Feb 20264.75% 27 Feb 2026−0.58
7 Nov 20253.76% 31 Oct 20254.28% 14 Nov 2025+0.52
8 Aug 20252.45% 31 Jul 20253.01% 15 Aug 2025+0.56
9 May 20253.21% 30 Apr 20253.80% 15 May 2025+0.59
27 Feb 20252.93% 14 Feb 20253.02% 28 Feb 2025+0.09
8 Nov 20241.46% 31 Oct 20241.79% 15 Nov 2024+0.33

Fails to deliver

The SEC's fails-to-deliver figure for KOP: 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
618
26 Aug 2026
Highest in window
23,218
13 Mar 2026
Days with a balance
44
Window
16 Sep 2025 to 14 Sep 2026
Aggregate net short position time series for Koppers 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 23K shares.

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Sector: Materials

History

Full reported short interest history
Settlement dateShort %Change
15 Sep 20264.07%−0.96
31 Aug 20265.03%+0.90
14 Aug 20264.13%+0.36
31 Jul 20263.77%−0.15
15 Jul 20263.92%−0.37
30 Jun 20264.29%−0.06
15 Jun 20264.35%−1.19
29 May 20265.54%+1.16
15 May 20264.38%−0.10
30 Apr 20264.48%+0.69
15 Apr 20263.79%+0.17
31 Mar 20263.62%−1.20
13 Mar 20264.82%+0.07
27 Feb 20264.75%−0.58
13 Feb 20265.33%−0.44
30 Jan 20265.77%+0.52
15 Jan 20265.25%+0.93
31 Dec 20254.32%+0.20
15 Dec 20254.12%−2.36
28 Nov 20256.48%+2.20
14 Nov 20254.28%+0.52
31 Oct 20253.76%+0.67
15 Oct 20253.09%+0.09
30 Sep 20253.00%−0.90
15 Sep 20253.90%−0.69
29 Aug 20254.59%+1.58
15 Aug 20253.01%+0.56
31 Jul 20252.45%−0.12
15 Jul 20252.57%−0.54
30 Jun 20253.11%−0.58
13 Jun 20253.69%−1.01
30 May 20254.70%+0.90
15 May 20253.80%+0.59
30 Apr 20253.21%+0.14
15 Apr 20253.07%−0.02
31 Mar 20253.09%−0.44
14 Mar 20253.53%+0.51
28 Feb 20253.02%+0.09
14 Feb 20252.93%+0.40
31 Jan 20252.53%+0.23
15 Jan 20252.30%+0.43
31 Dec 20241.87%−0.09
13 Dec 20241.96%+0.23
29 Nov 20241.73%−0.06
15 Nov 20241.79%+0.33
31 Oct 20241.46%+0.05
15 Oct 20241.41%+0.16
30 Sep 20241.25%−0.26
13 Sep 20241.51%+0.26
30 Aug 20241.25%+0.25
15 Aug 20241.00%+0.23
31 Jul 20240.77%−0.19
15 Jul 20240.96%−0.36
28 Jun 20241.32%−0.16
14 Jun 20241.48%+0.47
31 May 20241.01%0.00
15 May 20241.01%−0.43
30 Apr 20241.44%−0.13
15 Apr 20241.57%+0.01
28 Mar 20241.56%−0.21
15 Mar 20241.77%−0.08
29 Feb 20241.85%−0.05
15 Feb 20241.90%+0.09
31 Jan 20241.81%+0.22
12 Jan 20241.59%+0.09
29 Dec 20231.50%−0.53
15 Dec 20232.03%+0.29
30 Nov 20231.74%−0.09
15 Nov 20231.83%+0.57
31 Oct 20231.26%+0.20
13 Oct 20231.06%−0.05
29 Sep 20231.11%+0.15
15 Sep 20230.96%+0.23
31 Aug 20230.73%+0.01
15 Aug 20230.72%+0.07
31 Jul 20230.65%−0.16
14 Jul 20230.81%−0.08
30 Jun 20230.89%−0.24
15 Jun 20231.13%+0.26
31 May 20230.87%−0.11
15 May 20230.98%−0.70
28 Apr 20231.68%+0.02
14 Apr 20231.66%+0.12
31 Mar 20231.54%+0.30
15 Mar 20231.24%−0.13
28 Feb 20231.37%+0.07
15 Feb 20231.30%+0.04
31 Jan 20231.26%−0.05
13 Jan 20231.31%+0.11
30 Dec 20221.20%−0.36
15 Dec 20221.56%−0.07
30 Nov 20221.63%−0.61
15 Nov 20222.24%−0.66
31 Oct 20222.90%−0.10
14 Oct 20223.00%−0.06
30 Sep 20223.06%+0.52
15 Sep 20222.54%+0.73
31 Aug 20221.81%−0.31
15 Aug 20222.12%+0.22
29 Jul 20221.90%−0.18
15 Jul 20222.08%−0.01
30 Jun 20222.09%+0.35
15 Jun 20221.74%+0.17
31 May 20221.57%−0.15
13 May 20221.72%+0.11
29 Apr 20221.61%−0.08
14 Apr 20221.69%−0.03
31 Mar 20221.72%−0.23
15 Mar 20221.95%+0.03
28 Feb 20221.92%−0.91
15 Feb 20222.83%+0.95
31 Jan 20221.88%+0.10
14 Jan 20221.78%−0.01
31 Dec 20211.79%−0.14
15 Dec 20211.93%+0.07
30 Nov 20211.86%+0.05
15 Nov 20211.81%−0.17
29 Oct 20211.98%−0.61
15 Oct 20212.59%−0.02
30 Sep 20212.61%−0.22
15 Sep 20212.83%+0.45
31 Aug 20212.38%+0.11
13 Aug 20212.27%+0.03
30 Jul 20212.24%+0.14
15 Jul 20212.10%−0.03
30 Jun 20212.13%+0.10
15 Jun 20212.03%−0.79
28 May 20212.82%−0.01
14 May 20212.83%+0.65
30 Apr 20212.18%−1.24
15 Apr 20213.42%+1.26
31 Mar 20212.16%−0.56
15 Mar 20212.72%−0.11
26 Feb 20212.83%+0.31
12 Feb 20212.52%−0.34
29 Jan 20212.86%+0.23
15 Jan 20212.63%−0.37
31 Dec 20203.00%+0.87
15 Dec 20202.13%+0.14
30 Nov 20201.99%−0.17
13 Nov 20202.16%−0.08
30 Oct 20202.24%−0.04
15 Oct 20202.28%−0.02
30 Sep 20202.30%+0.02
15 Sep 20202.28%−0.13
31 Aug 20202.41%+0.06
14 Aug 20202.35%−0.12
31 Jul 20202.47%0.00
15 Jul 20202.47%−0.43
30 Jun 20202.90%+0.92
15 Jun 20201.98%−0.14
29 May 20202.12%+0.02
15 May 20202.10%+0.24
30 Apr 20201.86%+0.05
15 Apr 20201.81%−0.12
31 Mar 20201.93%−0.84
13 Mar 20202.77%+0.50
28 Feb 20202.27%+0.98
14 Feb 20201.29%−0.28
31 Jan 20201.57%−0.66
15 Jan 20202.23%−0.24
31 Dec 20192.47%+0.36
13 Dec 20192.11%+0.97
29 Nov 20191.14%+0.02
15 Nov 20191.12%+0.12
31 Oct 20191.00%−0.13
15 Oct 20191.13%−0.12
30 Sep 20191.25%−0.84
13 Sep 20192.09%−0.32
30 Aug 20192.41%−0.01
15 Aug 20192.42%+0.01
31 Jul 20192.41%−0.12
15 Jul 20192.53%−0.61
28 Jun 20193.14%−0.18
14 Jun 20193.32%+0.08
31 May 20193.24%+0.30
15 May 20192.94%−0.11
30 Apr 20193.05%−0.12
15 Apr 20193.17%+0.04
29 Mar 20193.13%−0.31
15 Mar 20193.44%−0.74
28 Feb 20194.18%−0.23
15 Feb 20194.41%−0.34
31 Jan 20194.75%−0.03
15 Jan 20194.78%+1.07
31 Dec 20183.71%+0.27
14 Dec 20183.44%+0.25
30 Nov 20183.19%−0.59
15 Nov 20183.78%+0.95
31 Oct 20182.83%+0.22
15 Oct 20182.61%+0.81
28 Sep 20181.80%+0.25
14 Sep 20181.55%+0.29
31 Aug 20181.26%−0.06
15 Aug 20181.32%+0.38
31 Jul 20180.94%+0.13
13 Jul 20180.81%+0.05
29 Jun 20180.76%−0.09
15 Jun 20180.85%−0.01
31 May 20180.86%+0.31
15 May 20180.55%−0.05
30 Apr 20180.60%−0.10
13 Apr 20180.70%−0.41
29 Mar 20181.11%+0.17
15 Mar 20180.94%+0.19
28 Feb 20180.75%−0.08
15 Feb 20180.83%+0.30
31 Jan 20180.53%−0.06
12 Jan 20180.59%+0.02
29 Dec 20170.57%–

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

Frequently asked questions

How shorted is Koppers Holdings, Inc. right now?
4.07% of Koppers Holdings, Inc.'s (KOP) shares outstanding were reported short for settlement date 15 Sep 2026, per FINRA's consolidated short interest report. That makes it the 2,028th 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 KOP'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 KOP's days to cover?
4.75 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.