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HowShorted

How shorted is Olin Corp.? OLN

#535most shorted US stockof 3,805 ranked stocks, more shorted than 85%

11.33%
of shares outstanding reported short · settlement date 15 Sep 2026
vs previous report
+1.20
5 reports (~10 weeks)
−2.63
days to cover
5.30
Aggregate net short position time series for Olin Corp.

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 Olin Corp. 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
30 Jul 202612.53% 15 Jul 202610.81% 31 Jul 2026−1.72
7 May 202610.23% 30 Apr 202610.05% 15 May 2026−0.18
29 Jan 202610.36% 15 Jan 202612.14% 30 Jan 2026+1.78
8 Jan 20269.26% 31 Dec 202510.36% 15 Jan 2026+1.10
27 Oct 20256.73% 15 Oct 20257.36% 31 Oct 2025+0.63
28 Jul 20254.88% 15 Jul 20255.58% 31 Jul 2025+0.70
1 May 20253.96% 30 Apr 20254.87% 15 May 2025+0.91
30 Jan 20253.54% 15 Jan 20253.44% 31 Jan 2025−0.10

Fails to deliver

The SEC's fails-to-deliver figure for OLN: 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
381
14 Sep 2026
Highest in window
297,739
13 Apr 2026
Days with a balance
52
Window
16 Sep 2025 to 14 Sep 2026
Aggregate net short position time series for Olin Corp. 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 298K shares.

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Sector: Materials

History

Full reported short interest history
Settlement dateShort %Change
15 Sep 202611.33%+1.20
31 Aug 202610.13%+0.40
14 Aug 20269.73%−1.08
31 Jul 202610.81%−1.72
15 Jul 202612.53%−1.43
30 Jun 202613.96%+0.62
15 Jun 202613.34%+1.47
29 May 202611.87%+1.82
15 May 202610.05%−0.18
30 Apr 202610.23%+0.53
15 Apr 20269.70%−2.19
31 Mar 202611.89%−1.45
13 Mar 202613.34%+0.49
27 Feb 202612.85%−0.40
13 Feb 202613.25%+1.11
30 Jan 202612.14%+1.78
15 Jan 202610.36%+1.10
31 Dec 20259.26%+0.44
15 Dec 20258.82%+0.22
28 Nov 20258.60%+0.67
14 Nov 20257.93%+0.57
31 Oct 20257.36%+0.63
15 Oct 20256.73%−0.94
30 Sep 20257.67%−0.32
15 Sep 20257.99%−0.22
29 Aug 20258.21%+1.47
15 Aug 20256.74%+1.16
31 Jul 20255.58%+0.70
15 Jul 20254.88%+0.33
30 Jun 20254.55%+0.07
13 Jun 20254.48%+0.24
30 May 20254.24%−0.63
15 May 20254.87%+0.91
30 Apr 20253.96%−0.25
15 Apr 20254.21%+0.61
31 Mar 20253.60%−0.92
14 Mar 20254.52%+0.32
28 Feb 20254.20%−0.08
14 Feb 20254.28%+0.84
31 Jan 20253.44%−0.10
15 Jan 20253.54%+0.16
31 Dec 20243.38%+0.94
13 Dec 20242.44%+0.30
29 Nov 20242.14%−0.29
15 Nov 20242.43%+0.57
31 Oct 20241.86%−0.27
15 Oct 20242.13%−0.07
30 Sep 20242.20%−0.29
13 Sep 20242.49%−0.32
30 Aug 20242.81%+0.38
15 Aug 20242.43%−0.09
31 Jul 20242.52%+0.18
15 Jul 20242.34%−0.72
28 Jun 20243.06%+0.44
14 Jun 20242.62%+0.34
31 May 20242.28%+0.14
15 May 20242.14%+0.04
30 Apr 20242.10%+0.12
15 Apr 20241.98%−0.31
28 Mar 20242.29%−0.07
15 Mar 20242.36%+0.27
29 Feb 20242.09%−0.42
15 Feb 20242.51%+0.14
31 Jan 20242.37%−0.89
12 Jan 20243.26%+0.03
29 Dec 20233.23%+0.39
15 Dec 20232.84%+0.64
30 Nov 20232.20%−0.74
15 Nov 20232.94%+0.06
31 Oct 20232.88%+0.05
13 Oct 20232.83%0.00
29 Sep 20232.83%−0.18
15 Sep 20233.01%−0.82
31 Aug 20233.83%+1.10
15 Aug 20232.73%−0.73
31 Jul 20233.46%+1.27
14 Jul 20232.19%−0.13
30 Jun 20232.32%−0.23
15 Jun 20232.55%+0.09
31 May 20232.46%−0.39
15 May 20232.85%+0.76
28 Apr 20232.09%−0.19
14 Apr 20232.28%+0.48
31 Mar 20231.80%−0.21
15 Mar 20232.01%−0.03
28 Feb 20232.04%−0.05
15 Feb 20232.09%+0.08
31 Jan 20232.01%+0.16
13 Jan 20231.85%−0.11
30 Dec 20221.96%−0.06
15 Dec 20222.02%−0.65
30 Nov 20222.67%+0.03
15 Nov 20222.64%+0.25
31 Oct 20222.39%−0.66
14 Oct 20223.05%+0.43
30 Sep 20222.62%−0.18
15 Sep 20222.80%−0.09
31 Aug 20222.89%+0.25
15 Aug 20222.64%−0.23
29 Jul 20222.87%−0.15
15 Jul 20223.02%+0.51
30 Jun 20222.51%+0.45
15 Jun 20222.06%−0.09
31 May 20222.15%−0.03
13 May 20222.18%+0.23
29 Apr 20221.95%−0.46
14 Apr 20222.41%+0.45
31 Mar 20221.96%−0.09
15 Mar 20222.05%+0.31
28 Feb 20221.74%−0.17
15 Feb 20221.91%+0.11
31 Jan 20221.80%+0.27
14 Jan 20221.53%+0.07
31 Dec 20211.46%−0.33
15 Dec 20211.79%+0.13
30 Nov 20211.66%−0.09
15 Nov 20211.75%−0.33
29 Oct 20212.08%−0.51
15 Oct 20212.59%−0.25
30 Sep 20212.84%+0.32
15 Sep 20212.52%+0.06
31 Aug 20212.46%+0.25
13 Aug 20212.21%+0.14
30 Jul 20212.07%−0.19
15 Jul 20212.26%+0.33
30 Jun 20211.93%+0.19
15 Jun 20211.74%−0.02
28 May 20211.76%+0.16
14 May 20211.60%+0.14
30 Apr 20211.46%−0.25
15 Apr 20211.71%+0.04
31 Mar 20211.67%−0.32
15 Mar 20211.99%+0.11
26 Feb 20211.88%−0.29
12 Feb 20212.17%+0.36
29 Jan 20211.81%−0.19
15 Jan 20212.00%−0.49
31 Dec 20202.49%−0.12
15 Dec 20202.61%+0.20
30 Nov 20202.41%−1.16
13 Nov 20203.57%−0.58
30 Oct 20204.15%+0.24
15 Oct 20203.91%−0.27
30 Sep 20204.18%−0.16
15 Sep 20204.34%−0.21
31 Aug 20204.55%+0.38
14 Aug 20204.17%0.00
31 Jul 20204.17%−0.28
15 Jul 20204.45%−0.02
30 Jun 20204.47%−1.27
15 Jun 20205.74%+0.36
29 May 20205.38%−0.56
15 May 20205.94%+0.79
30 Apr 20205.15%+0.40
15 Apr 20204.75%−1.32
31 Mar 20206.07%−0.69
13 Mar 20206.76%−0.47
28 Feb 20207.23%+2.47
14 Feb 20204.76%+1.28
31 Jan 20203.48%+0.58
15 Jan 20202.90%−0.08
31 Dec 20192.98%−0.31
13 Dec 20193.29%−0.21
29 Nov 20193.50%−0.69
15 Nov 20194.19%+0.08
31 Oct 20194.11%−0.64
15 Oct 20194.75%−0.95
30 Sep 20195.70%−1.71
13 Sep 20197.41%−0.43
30 Aug 20197.84%−1.11
15 Aug 20198.95%+3.54
31 Jul 20195.41%+0.94
15 Jul 20194.47%+0.02
28 Jun 20194.45%−1.45
14 Jun 20195.90%−0.62
31 May 20196.52%+0.66
15 May 20195.86%+0.16
30 Apr 20195.70%−0.06
15 Apr 20195.76%+0.44
29 Mar 20195.32%−0.05
15 Mar 20195.37%+0.88
28 Feb 20194.49%+0.08
15 Feb 20194.41%+1.98
31 Jan 20192.43%+0.34
15 Jan 20192.09%−0.15
31 Dec 20182.24%−0.24
14 Dec 20182.48%−0.06
30 Nov 20182.54%+0.30
15 Nov 20182.24%+0.51
31 Oct 20181.73%−0.62
15 Oct 20182.35%−1.22
28 Sep 20183.57%+0.26
14 Sep 20183.31%−0.03
31 Aug 20183.34%+0.43
15 Aug 20182.91%+0.16
31 Jul 20182.75%+0.03
13 Jul 20182.72%−0.03
29 Jun 20182.75%−0.33
15 Jun 20183.08%+0.57
31 May 20182.51%−0.53
15 May 20183.04%+1.15
30 Apr 20181.89%−0.01
13 Apr 20181.90%−0.02
29 Mar 20181.92%+0.01
15 Mar 20181.91%+0.49
28 Feb 20181.42%+0.25
15 Feb 20181.17%−0.76
31 Jan 20181.93%−0.12
12 Jan 20182.05%+0.14
29 Dec 20171.91%–

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

Frequently asked questions

How shorted is Olin Corp. right now?
11.33% of Olin Corp.'s (OLN) shares outstanding were reported short for settlement date 15 Sep 2026, per FINRA's consolidated short interest report. That makes it the 535th 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 OLN'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 OLN's days to cover?
5.30 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.