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HowShorted

How shorted is Simulations Plus, Inc.? SLP

#314most shorted US stockof 3,805 ranked stocks, more shorted than 91%

14.30%
of shares outstanding reported short · settlement date 15 Sep 2026
vs previous report
+0.27
5 reports (~10 weeks)
+8.22
days to cover
14.81
Aggregate net short position time series for Simulations Plus, 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 Simulations Plus, 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
9 Jul 20266.08% 30 Jun 20268.80% 15 Jul 2026+2.72
9 Apr 20265.94% 31 Mar 20266.09% 15 Apr 2026+0.15
8 Jan 20265.82% 31 Dec 20255.65% 15 Jan 2026−0.17
1 Dec 20256.49% 28 Nov 20255.70% 15 Dec 2025−0.79
22 Oct 20255.57% 15 Oct 20255.85% 31 Oct 2025+0.28
14 Jul 20257.75% 30 Jun 20258.02% 15 Jul 2025+0.27
3 Apr 20257.96% 31 Mar 20259.99% 15 Apr 2025+2.03
7 Jan 20255.47% 31 Dec 20247.07% 15 Jan 2025+1.60

Fails to deliver

The SEC's fails-to-deliver figure for SLP: 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
211
14 Sep 2026
Highest in window
221,907
22 Jul 2026
Days with a balance
60
Window
16 Sep 2025 to 14 Sep 2026
Aggregate net short position time series for Simulations Plus, 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 222K shares.

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Sector: Technology

History

Full reported short interest history
Settlement dateShort %Change
15 Sep 202614.30%+0.27
31 Aug 202614.03%+0.09
14 Aug 202613.94%−0.12
31 Jul 202614.06%+5.26
15 Jul 20268.80%+2.72
30 Jun 20266.08%−0.73
15 Jun 20266.81%+0.04
29 May 20266.77%−0.11
15 May 20266.88%+0.41
30 Apr 20266.47%+0.38
15 Apr 20266.09%+0.15
31 Mar 20265.94%−0.29
13 Mar 20266.23%−0.35
27 Feb 20266.58%+0.15
13 Feb 20266.43%+0.47
30 Jan 20265.96%+0.31
15 Jan 20265.65%−0.17
31 Dec 20255.82%+0.12
15 Dec 20255.70%−0.79
28 Nov 20256.49%+0.17
14 Nov 20256.32%+0.47
31 Oct 20255.85%+0.28
15 Oct 20255.57%−0.26
30 Sep 20255.83%−2.42
15 Sep 20258.25%+0.21
29 Aug 20258.04%+0.10
15 Aug 20257.94%−0.21
31 Jul 20258.15%+0.13
15 Jul 20258.02%+0.27
30 Jun 20257.75%−1.47
13 Jun 20259.22%−1.03
30 May 202510.25%+0.35
15 May 20259.90%−0.08
30 Apr 20259.98%−0.01
15 Apr 20259.99%+2.03
31 Mar 20257.96%+0.11
14 Mar 20257.85%−0.84
28 Feb 20258.69%−0.35
14 Feb 20259.04%+1.03
31 Jan 20258.01%+0.94
15 Jan 20257.07%+1.60
31 Dec 20245.47%+0.50
13 Dec 20244.97%−0.03
29 Nov 20245.00%+0.07
15 Nov 20244.93%+0.05
31 Oct 20244.88%+0.16
15 Oct 20244.72%+0.26
30 Sep 20244.46%−1.34
13 Sep 20245.80%−0.20
30 Aug 20246.00%−0.68
15 Aug 20246.68%−0.04
31 Jul 20246.72%+1.33
15 Jul 20245.39%−0.75
28 Jun 20246.14%+0.27
14 Jun 20245.87%+0.08
31 May 20245.79%−0.04
15 May 20245.83%−0.22
30 Apr 20246.05%+0.11
15 Apr 20245.94%−0.07
28 Mar 20246.01%+0.63
15 Mar 20245.38%−0.15
29 Feb 20245.53%−0.07
15 Feb 20245.60%−0.18
31 Jan 20245.78%−0.27
12 Jan 20246.05%+0.33
29 Dec 20235.72%+0.14
15 Dec 20235.58%−0.04
30 Nov 20235.62%−0.19
15 Nov 20235.81%−0.06
31 Oct 20235.87%−0.78
13 Oct 20236.65%−1.01
29 Sep 20237.66%−0.21
15 Sep 20237.87%+0.08
31 Aug 20237.79%+0.13
15 Aug 20237.66%−0.16
31 Jul 20237.82%−0.21
14 Jul 20238.03%+0.14
30 Jun 20237.89%−0.22
15 Jun 20238.11%0.00
31 May 20238.11%+0.14
15 May 20237.97%−0.27
28 Apr 20238.24%−0.11
14 Apr 20238.35%+0.18
31 Mar 20238.17%−0.65
15 Mar 20238.82%+0.61
28 Feb 20238.21%−0.23
15 Feb 20238.44%−0.68
31 Jan 20239.12%+0.14
13 Jan 20238.98%+2.04
30 Dec 20226.94%−0.21
15 Dec 20227.15%+0.51
30 Nov 20226.64%+0.41
15 Nov 20226.23%−0.93
31 Oct 20227.16%−0.77
14 Oct 20227.93%+0.58
30 Sep 20227.35%+1.55
15 Sep 20225.80%−0.15
31 Aug 20225.95%−0.33
15 Aug 20226.28%−0.66
29 Jul 20226.94%−0.14
15 Jul 20227.08%+0.56
30 Jun 20226.52%−0.43
15 Jun 20226.95%+0.06
31 May 20226.89%−0.06
13 May 20226.95%−0.25
29 Apr 20227.20%+0.14
14 Apr 20227.06%−0.61
31 Mar 20227.67%−0.81
15 Mar 20228.48%−0.25
28 Feb 20228.73%−0.16
15 Feb 20228.89%−0.51
31 Jan 20229.40%+0.77
14 Jan 20228.63%−0.57
31 Dec 20219.20%+0.21
15 Dec 20218.99%+0.50
30 Nov 20218.49%+0.21
15 Nov 20218.28%−1.36
29 Oct 20219.64%−0.28
15 Oct 20219.92%−0.18
30 Sep 202110.10%−0.15
15 Sep 202110.25%−0.25
31 Aug 202110.50%−0.21
13 Aug 202110.71%−1.47
30 Jul 202112.18%+0.16
15 Jul 202112.02%−0.13
30 Jun 202112.15%+1.32
15 Jun 202110.83%−0.14
28 May 202110.97%+0.86
14 May 202110.11%+0.74
30 Apr 20219.37%+0.52
15 Apr 20218.85%+1.02
31 Mar 20217.83%+0.66
15 Mar 20217.17%+0.53
26 Feb 20216.64%+0.30
12 Feb 20216.34%−1.23
29 Jan 20217.57%−0.50
15 Jan 20218.07%−0.75
31 Dec 20208.82%+0.21
15 Dec 20208.61%+1.01
30 Nov 20207.60%+1.03
13 Nov 20206.57%−1.08
30 Oct 20207.65%+0.17
15 Oct 20207.48%−1.48
30 Sep 20208.96%+2.17
15 Sep 20206.79%+0.85
31 Aug 20205.94%+0.08
14 Aug 20205.86%−2.78
31 Jul 20208.64%+0.22
15 Jul 20208.42%−1.39
30 Jun 20209.81%−0.21
15 Jun 202010.02%+3.43
29 May 20206.59%−0.06
15 May 20206.65%−0.72
30 Apr 20207.37%+0.09
15 Apr 20207.28%−0.19
31 Mar 20207.47%−0.64
13 Mar 20208.11%+0.56
28 Feb 20207.55%+0.19
14 Feb 20207.36%−0.38
31 Jan 20207.74%−0.17
15 Jan 20207.91%+1.42
31 Dec 20196.49%+0.43
13 Dec 20196.06%−0.09
29 Nov 20196.15%−0.12
15 Nov 20196.27%+0.66
31 Oct 20195.61%+1.26
15 Oct 20194.35%+1.06
30 Sep 20193.29%+0.44
13 Sep 20192.85%+0.42
30 Aug 20192.43%+0.28
15 Aug 20192.15%+0.27
31 Jul 20191.88%+0.40
15 Jul 20191.48%−0.16
28 Jun 20191.64%−0.10
14 Jun 20191.74%−0.12
31 May 20191.86%+0.13
15 May 20191.73%−0.08
30 Apr 20191.81%−0.25
15 Apr 20192.06%+0.04
29 Mar 20192.02%−0.02
15 Mar 20192.04%−0.02
28 Feb 20192.06%−0.30
15 Feb 20192.36%+0.05
31 Jan 20192.31%+0.10
15 Jan 20192.21%+0.46
31 Dec 20181.75%+0.01
14 Dec 20181.74%+0.18
30 Nov 20181.56%+0.10
15 Nov 20181.46%−0.19
31 Oct 20181.65%+0.15
15 Oct 20181.50%−0.02
28 Sep 20181.52%−0.11
14 Sep 20181.63%−0.20
31 Aug 20181.83%−0.19
15 Aug 20182.02%−0.03
31 Jul 20182.05%+0.66
13 Jul 20181.39%+0.47
29 Jun 20180.92%+0.29
15 Jun 20180.63%−0.01
31 May 20180.64%−0.03
15 May 20180.67%−0.03
30 Apr 20180.70%−0.20
13 Apr 20180.90%+0.11
29 Mar 20180.79%−0.17
15 Mar 20180.96%−0.10
28 Feb 20181.06%+0.03
15 Feb 20181.03%+0.20
31 Jan 20180.83%+0.15
12 Jan 20180.68%−0.08
29 Dec 20170.76%–

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

Frequently asked questions

How shorted is Simulations Plus, Inc. right now?
14.30% of Simulations Plus, Inc.'s (SLP) shares outstanding were reported short for settlement date 15 Sep 2026, per FINRA's consolidated short interest report. That makes it the 314th 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 SLP'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 SLP's days to cover?
14.81 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.