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HowShorted

How shorted is POWER INTEGRATIONS INC? POWI

#610most shorted US stockof 3,805 ranked stocks, more shorted than 83%

10.52%
of shares outstanding reported short · settlement date 15 Sep 2026
vs previous report
+0.36
5 reports (~10 weeks)
+2.13
days to cover
6.73
Aggregate net short position time series for POWER INTEGRATIONS 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 POWER INTEGRATIONS 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 20269.99% 31 Jul 20269.90% 14 Aug 2026−0.09
7 May 20267.86% 30 Apr 20267.18% 15 May 2026−0.68
5 Feb 20267.92% 30 Jan 20267.29% 13 Feb 2026−0.63
5 Nov 20256.60% 31 Oct 20257.56% 14 Nov 2025+0.96
6 Aug 20255.03% 31 Jul 20254.27% 15 Aug 2025−0.76
12 May 20257.03% 30 Apr 20256.43% 15 May 2025−0.60
6 Feb 20255.92% 31 Jan 20255.74% 14 Feb 2025−0.18
6 Nov 20247.03% 31 Oct 20246.97% 15 Nov 2024−0.06

Fails to deliver

The SEC's fails-to-deliver figure for POWI: 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
5,903
4 Sep 2026
Highest in window
215,836
29 Jun 2026
Days with a balance
83
Window
16 Sep 2025 to 14 Sep 2026
Aggregate net short position time series for POWER INTEGRATIONS 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 216K shares.

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Sector: Technology

History

Full reported short interest history
Settlement dateShort %Change
15 Sep 202610.52%+0.36
31 Aug 202610.16%+0.26
14 Aug 20269.90%−0.09
31 Jul 20269.99%+0.16
15 Jul 20269.83%+1.44
30 Jun 20268.39%−0.07
15 Jun 20268.46%+0.26
29 May 20268.20%+1.02
15 May 20267.18%−0.68
30 Apr 20267.86%+0.39
15 Apr 20267.47%−1.14
31 Mar 20268.61%−0.23
13 Mar 20268.84%+0.79
27 Feb 20268.05%+0.76
13 Feb 20267.29%−0.63
30 Jan 20267.92%−1.38
15 Jan 20269.30%+0.70
31 Dec 20258.60%+1.09
15 Dec 20257.51%+0.10
28 Nov 20257.41%−0.15
14 Nov 20257.56%+0.96
31 Oct 20256.60%−0.41
15 Oct 20257.01%+2.57
30 Sep 20254.44%+0.03
15 Sep 20254.41%−0.14
29 Aug 20254.55%+0.28
15 Aug 20254.27%−0.76
31 Jul 20255.03%+0.72
15 Jul 20254.31%−0.42
30 Jun 20254.73%−0.10
13 Jun 20254.83%−1.72
30 May 20256.55%+0.12
15 May 20256.43%−0.60
30 Apr 20257.03%−0.06
15 Apr 20257.09%+0.28
31 Mar 20256.81%−0.03
14 Mar 20256.84%+0.18
28 Feb 20256.66%+0.92
14 Feb 20255.74%−0.18
31 Jan 20255.92%−0.39
15 Jan 20256.31%−0.34
31 Dec 20246.65%−0.14
13 Dec 20246.79%−0.01
29 Nov 20246.80%−0.17
15 Nov 20246.97%−0.06
31 Oct 20247.03%+1.23
15 Oct 20245.80%−0.32
30 Sep 20246.12%−0.55
13 Sep 20246.67%+0.09
30 Aug 20246.58%+0.15
15 Aug 20246.43%−0.62
31 Jul 20247.05%+0.14
15 Jul 20246.91%+0.07
28 Jun 20246.84%+0.64
14 Jun 20246.20%−1.00
31 May 20247.20%+0.88
15 May 20246.32%−0.30
30 Apr 20246.62%−1.04
15 Apr 20247.66%+0.41
28 Mar 20247.25%+0.27
15 Mar 20246.98%+0.06
29 Feb 20246.92%+0.36
15 Feb 20246.56%+0.36
31 Jan 20246.20%+0.24
12 Jan 20245.96%+0.01
29 Dec 20235.95%+0.16
15 Dec 20235.79%+0.40
30 Nov 20235.39%+0.07
15 Nov 20235.32%−0.13
31 Oct 20235.45%+0.10
13 Oct 20235.35%+0.10
29 Sep 20235.25%+0.13
15 Sep 20235.12%+0.06
31 Aug 20235.06%+0.26
15 Aug 20234.80%−0.50
31 Jul 20235.30%−1.40
14 Jul 20236.70%+0.51
30 Jun 20236.19%+0.42
15 Jun 20235.77%−0.08
31 May 20235.85%−0.10
15 May 20235.95%+0.72
28 Apr 20235.23%+0.33
14 Apr 20234.90%−0.01
31 Mar 20234.91%−0.34
15 Mar 20235.25%−0.46
28 Feb 20235.71%+0.54
15 Feb 20235.17%−0.18
31 Jan 20235.35%+0.29
13 Jan 20235.06%−0.94
30 Dec 20226.00%−0.06
15 Dec 20226.06%+1.01
30 Nov 20225.05%+0.09
15 Nov 20224.96%−0.41
31 Oct 20225.37%−0.36
14 Oct 20225.73%+0.56
30 Sep 20225.17%−0.19
15 Sep 20225.36%−0.10
31 Aug 20225.46%+0.06
15 Aug 20225.40%−0.45
29 Jul 20225.85%+0.12
15 Jul 20225.73%+0.06
30 Jun 20225.67%+0.38
15 Jun 20225.29%+0.42
31 May 20224.87%+0.63
13 May 20224.24%+0.55
29 Apr 20223.69%+0.68
14 Apr 20223.01%−0.29
31 Mar 20223.30%−0.05
15 Mar 20223.35%+0.29
28 Feb 20223.06%+0.11
15 Feb 20222.95%−0.07
31 Jan 20223.02%−0.34
14 Jan 20223.36%+0.60
31 Dec 20212.76%−0.70
15 Dec 20213.46%+0.70
30 Nov 20212.76%+0.11
15 Nov 20212.65%−0.36
29 Oct 20213.01%+0.23
15 Oct 20212.78%0.00
30 Sep 20212.78%−0.08
15 Sep 20212.86%−0.11
31 Aug 20212.97%−0.15
13 Aug 20213.12%−0.02
30 Jul 20213.14%+0.14
15 Jul 20213.00%0.00
30 Jun 20213.00%−0.22
15 Jun 20213.22%+0.49
28 May 20212.73%−0.21
14 May 20212.94%+0.36
30 Apr 20212.58%−0.44
15 Apr 20213.02%−0.17
31 Mar 20213.19%+0.02
15 Mar 20213.17%−0.09
26 Feb 20213.26%+0.49
12 Feb 20212.77%+0.18
29 Jan 20212.59%−0.50
15 Jan 20213.09%−0.48
31 Dec 20203.57%+0.02
15 Dec 20203.55%+0.48
30 Nov 20203.07%−0.40
13 Nov 20203.47%+0.24
30 Oct 20203.23%−0.81
14 Aug 20204.04%+0.02
31 Jul 20204.02%−0.19
15 Jul 20204.21%−0.43
30 Jun 20204.64%+0.35
15 Jun 20204.29%−0.36
29 May 20204.65%+0.03
15 May 20204.62%−0.09
30 Apr 20204.71%−0.13
15 Apr 20204.84%−0.31
31 Mar 20205.15%+0.06
13 Mar 20205.09%+1.08
28 Feb 20204.01%+0.54
14 Feb 20203.47%+0.03
31 Jan 20203.44%−0.17
15 Jan 20203.61%+0.08
31 Dec 20193.53%+0.23
13 Dec 20193.30%+0.13
29 Nov 20193.17%+0.21
15 Nov 20192.96%+0.25
31 Oct 20192.71%−0.61
15 Oct 20193.32%−0.60
30 Sep 20193.92%+0.04
13 Sep 20193.88%−0.09
30 Aug 20193.97%+0.56
15 Aug 20193.41%−0.33
31 Jul 20193.74%−0.27
15 Jul 20194.01%+0.19
28 Jun 20193.82%+0.19
14 Jun 20193.63%−0.08
31 May 20193.71%−0.16
15 May 20193.87%+0.25
30 Apr 20193.62%−0.38
15 Apr 20194.00%−0.09
29 Mar 20194.09%−0.13
15 Mar 20194.22%−0.17
28 Feb 20194.39%−0.19
15 Feb 20194.58%−1.10
31 Jan 20195.68%−0.52
15 Jan 20196.20%+0.69
31 Dec 20185.51%−0.06
14 Dec 20185.57%−0.32
30 Nov 20185.89%+0.55
15 Nov 20185.34%+0.25
31 Oct 20185.09%+0.33
15 Oct 20184.76%−0.08
28 Sep 20184.84%+0.65
14 Sep 20184.19%+0.26
31 Aug 20183.93%+0.37
15 Aug 20183.56%−0.43
31 Jul 20183.99%+0.34
13 Jul 20183.65%−0.36
29 Jun 20184.01%−0.24
15 Jun 20184.25%+0.43
31 May 20183.82%+0.21
15 May 20183.61%+0.24
30 Apr 20183.37%+0.39
13 Apr 20182.98%+0.42
29 Mar 20182.56%+0.17
15 Mar 20182.39%+0.28
28 Feb 20182.11%+0.06
15 Feb 20182.05%+0.40
31 Jan 20181.65%0.00
12 Jan 20181.65%+0.01
29 Dec 20171.64%–

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

Frequently asked questions

How shorted is POWER INTEGRATIONS INC right now?
10.52% of POWER INTEGRATIONS INC's (POWI) shares outstanding were reported short for settlement date 15 Sep 2026, per FINRA's consolidated short interest report. That makes it the 610th 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 POWI'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 POWI's days to cover?
6.73 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.