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Simulations Plus (SLP) Short Interest Ratio & Short Volume

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$18.50 0.00 (0.00%)
As of 10/9/2026
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Simulations Plus Short Interest Overview

As of September 30, 2026, Simulations Plus (SLP) had a short interest of 2.88 million shares sold short, representing 17.60% of the public float. This marks a -0.47% decrease in short interest since the prior report. The short interest ratio (days to cover) is 15.2, meaning it would take 15.2 days of the average trading volume of 253,980 shares to cover all short positions.

Current Short Interest
2,879,422 shares
Previous Short Interest
2,892,884 shares
Change Vs. Previous Month
-0.47%
Dollar Volume Sold Short
$53.07 million
Short Interest Ratio
15.2 Days to Cover
Last Record Date
September 30, 2026
Outstanding Shares
20,225,000 shares
Short Percent of Float
17.60%
Today's Trading Volume
0 shares
Average Trading Volume
253,980 shares
Today's Volume Vs. Average
0%
Short Selling Simulations Plus?
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Short Interest ChartDays to Cover ChartShort Percent of Float Chart

SLP Short Interest Over Time

SLP Days to Cover Over Time

SLP Percentage of Float Shorted Over Time

Simulations Plus Tesla Short Interest History & Recent Changes

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Report DateTotal Shares Sold ShortDollar Volume Sold ShortChange from Previous ReportPercentage of Float ShortedDays to CoverPrice on Report Date
9/30/20262,879,422 shares $53.07 million -0.5%17.6%15.2 $18.43
9/15/20262,892,884 shares $53.26 million +2.0%17.7%14.81 $18.41
8/31/20262,836,864 shares $52.20 million +0.7%17.3%17.79 $18.40
8/14/20262,818,580 shares $51.72 million -0.9%17.2%15.81 $18.35
7/31/20262,844,266 shares $51.85 million +59.7%17.4%5.24 $18.23
7/15/20261,780,772 shares $32.50 million +44.7%10.9%4.55 $18.25
6/30/20261,230,399 shares $22.53 million -10.6%7.5%1.23 $18.31
6/15/20261,375,887 shares $22.52 million +0.6%8.4%6.88 $16.37
5/29/20261,367,536 shares $23.40 million -1.6%8.4%6.29 $17.11
5/15/20261,389,278 shares $18.53 million +6.3%8.5%2.98 $13.34
4/30/20261,306,998 shares $18.52 million +6.2%8.0%4.14 $14.17
4/15/20261,231,136 shares $18.02 million +2.6%7.5%2.49 $14.64
3/31/20261,199,762 shares $14.18 million -4.4%7.3%5.91 $11.82
3/13/20261,254,798 shares $15.61 million -5.4%7.7%6.46 $12.44
2/27/20261,326,450 shares $16.22 million +2.5%8.1%4.48 $12.23
2/13/20261,294,697 shares $15.91 million +7.9%7.9%2.49 $12.29
1/30/20261,200,216 shares $20.27 million +5.4%7.4%4.36 $16.89
1/15/20261,138,320 shares $23.06 million -3.0%7.0%2.68 $20.26
12/31/20251,172,905 shares $21.38 million +2.1%7.2%5.19 $18.23
12/15/20251,149,138 shares $22.33 million -12.2%7.1%2.69 $19.43
11/28/20251,308,277 shares $22.37 million +2.7%8.1%2.95 $17.10
11/14/20251,273,980 shares $22.05 million +8.3%7.9%3.53 $17.31
10/31/20251,176,740 shares $20.22 million +5.0%7.3%2.6 $17.18
10/15/20251,120,000 shares $17.47 million -4.3%6.9%2.2 $15.60
9/30/20251,170,000 shares $17.63 million -29.5%7.2%1.7 $15.07
9/15/20251,660,000 shares $24.37 million +2.5%10.2%2.4 $14.68
8/31/20251,620,000 shares $22.96 million +1.3%10.0%2.4 $14.17
8/15/20251,600,000 shares $22.78 million -2.4%9.8%2.4 $14.24
7/31/20251,640,000 shares $21.35 million +1.9%10.1%2.6 $13.02
7/15/20251,610,000 shares $20.88 million +3.2%9.9%2.7 $12.97
6/30/20251,560,000 shares $27.22 million -15.7%9.6%3.5 $17.45
6/15/20251,850,000 shares $35.28 million -10.2%11.4%4.6 $19.07
5/31/20252,060,000 shares $65.86 million +3.5%12.7%6.2 $31.97
5/15/20251,990,000 shares $61.19 million -1.0%12.3%6.5 $30.75
4/30/20252,010,000 shares $69.04 million No Change12.1%7 $34.35
4/15/20252,010,000 shares $65.95 million +25.6%12.1%7.4 $32.81
3/31/20251,600,000 shares $39.23 million +1.3%9.7%6.7 $24.52
3/15/20251,580,000 shares $41.21 million -9.7%9.6%7.3 $26.08
2/28/20251,750,000 shares $50.72 million -3.9%10.6%7.9 $28.98
2/15/20251,820,000 shares $66.28 million +13.0%11.0%7.9 $36.42
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1/31/20251,610,000 shares $55.26 million +13.4%9.8%6.9 $34.32
1/15/20251,420,000 shares $42.36 million +29.1%8.6%5.6 $29.83
12/31/20241,100,000 shares $30.68 million +10.4%6.7%4.6 $27.89
12/15/2024996,500 shares $30.82 million -0.4%6.1%4.9 $30.93
11/30/20241,000,000 shares $31.77 million +1.1%6.1%5 $31.77
11/15/2024989,600 shares $28.47 million +1.0%6.0%5.2 $28.77
10/31/2024980,100 shares $26.68 million +3.7%6.0%5.7 $27.22
10/15/2024944,800 shares $29.76 million +5.9%5.8%6 $31.50
9/30/2024891,900 shares $28.56 million -23.1%5.5%5.8 $32.02
9/15/20241,160,000 shares $37.70 million -3.3%7.1%7.2 $32.50
8/31/20241,200,000 shares $43.50 million -10.5%7.4%8.1 $36.25
8/15/20241,340,000 shares $48.88 million No Change8.2%9.6 $36.48
7/31/20241,340,000 shares $54.73 million +24.1%8.2%10.2 $40.84
7/15/20241,080,000 shares $45.98 million -12.2%6.6%8.7 $42.57
6/30/20241,230,000 shares $59.80 million +5.1%7.6%11.9 $48.62
6/15/20241,170,000 shares $54.59 million +0.9%7.2%11.7 $46.66
5/31/20241,160,000 shares $55.96 million -0.9%7.1%11.8 $48.24
5/15/20241,170,000 shares $58.79 million -3.3%7.2%11.4 $50.25
4/30/20241,210,000 shares $54.87 million +1.7%7.5%11.2 $45.35
4/15/20241,190,000 shares $54.38 million -0.8%7.3%11.2 $45.70
3/31/20241,200,000 shares $49.38 million +12.2%7.4%11.4 $41.15
3/15/20241,070,000 shares $46.11 million -2.7%6.6%10.9 $43.09
2/29/20241,100,000 shares $45.65 million -1.8%6.8%11.4 $41.50
2/15/20241,120,000 shares $47.19 million -2.6%6.9%12 $42.13
1/31/20241,150,000 shares $43.59 million -5.0%7.1%11.3 $37.90
1/15/20241,210,000 shares $46.72 million +6.1%7.5%9.5 $38.61
12/31/20231,140,000 shares $51.02 million +2.7%7.1%9 $44.75
12/15/20231,110,000 shares $46.63 million -0.9%6.9%9.6 $42.01
11/30/20231,120,000 shares $43.90 million -3.5%7.0%9.7 $39.20
11/15/20231,160,000 shares $45.08 million -0.9%7.3%10.2 $38.86
10/31/20231,170,000 shares $41.27 million -12.0%7.3%11 $35.27
10/15/20231,330,000 shares $54.06 million -13.1%8.4%16.1 $40.65
9/30/20231,530,000 shares $63.80 million -2.6%9.6%18.1 $41.70
9/15/20231,570,000 shares $64.37 million +1.3%9.9%16.5 $41.00
8/31/20231,550,000 shares $68.96 million +1.3%9.7%16 $44.49
8/15/20231,530,000 shares $73.46 million -1.9%9.6%14.7 $48.01
7/31/20231,560,000 shares $77.69 million -2.5%9.8%15 $49.80
7/15/20231,600,000 shares $76.14 million +1.9%10.0%16.2 $47.59
6/30/20231,570,000 shares $68.03 million -3.1%9.9%15.6 $43.33
6/15/20231,620,000 shares $76.14 million No Change10.1%15.7 $47.00
5/31/20231,620,000 shares $71.59 million +1.9%10.1%15.2 $44.19
5/15/20231,590,000 shares $65.13 million -3.6%10.0%15.2 $40.96
4/30/20231,650,000 shares $68.89 million -1.2%10.3%15.3 $41.75
4/15/20231,670,000 shares $72.96 million +2.5%10.4%15 $43.69
3/31/20231,630,000 shares $71.62 million -8.9%10.2%14.2 $43.94
3/15/20231,790,000 shares $74.07 million +7.2%11.0%15.6 $41.38
2/28/20231,670,000 shares $63.53 million -2.9%10.3%15 $38.04
2/15/20231,720,000 shares $69.94 million -7.0%10.6%15.2 $40.66
1/31/20231,850,000 shares $76.11 million +1.1%11.4%15.9 $41.14
1/15/20231,830,000 shares $73.61 million +29.8%11.3%14.4 $40.23
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12/30/20221,410,000 shares $51.56 million -2.8%8.7%10.9 $36.57
12/15/20221,450,000 shares $56.45 million +7.4%9.0%12.2 $38.93
11/30/20221,350,000 shares $54.80 million +6.3%8.4%10.7 $40.59
11/15/20221,270,000 shares $54.86 million -12.4%7.9%10.1 $43.20
10/31/20221,450,000 shares $60.18 million -9.4%9.0%11.2 $41.50
10/15/20221,600,000 shares $75.23 million +7.4%10.0%13.6 $47.02
9/30/20221,490,000 shares $72.32 million +27.4%9.3%12 $48.54
9/15/20221,170,000 shares $63.59 million -2.5%7.3%8.8 $54.35
8/31/20221,200,000 shares $72.06 million -5.5%7.5%9.1 $60.05
8/15/20221,270,000 shares $82.68 million -9.3%8.0%9.8 $65.10
7/31/20221,400,000 shares $89.81 million -2.1%8.8%11 $64.15
7/15/20221,430,000 shares $80.28 million +8.3%9.0%11.6 $56.14
6/30/20221,320,000 shares $65.12 million -5.7%8.3%11.1 $49.33
6/15/20221,400,000 shares $63.18 million +0.7%8.8%12 $45.13
5/31/20221,390,000 shares $66.00 million -0.7%8.8%12.9 $47.48
5/15/20221,400,000 shares $62.29 million -4.1%8.8%12.8 $44.49
4/30/20221,460,000 shares $68.12 million +2.1%9.2%13.6 $46.66
4/15/20221,430,000 shares $72.83 million -7.7%9.0%12.1 $50.93
3/31/20221,550,000 shares $79.02 million -9.4%9.8%12.7 $50.98
3/15/20221,710,000 shares $68.76 million -2.8%10.8%15.2 $40.21
2/28/20221,760,000 shares $69.33 million -1.7%11.1%14 $39.39
2/15/20221,790,000 shares $72.23 million -5.8%11.3%13.3 $40.35
1/31/20221,900,000 shares $80.79 million +9.2%12.0%12.9 $42.52
1/15/20221,740,000 shares $82.48 million -6.0%11.0%10.8 $47.40
12/31/20211,850,000 shares $87.51 million +2.2%11.7%11.2 $47.30
12/15/20211,810,000 shares $86.26 million +5.9%11.5%11.1 $47.66
11/30/20211,710,000 shares $80.32 million +2.4%10.9%10.7 $46.97
11/15/20211,670,000 shares $92.38 million -13.9%10.6%11.1 $55.32
10/29/20211,940,000 shares $97.97 million -3.0%12.4%14.3 $50.50
10/15/20212,000,000 shares $79.70 million -1.5%12.8%16.2 $39.85

SLP Short Interest - Frequently Asked Questions

Short interest is the volume of Simulations Plus shares that have been sold short but have not yet been closed out or covered. As of September 30th, traders have sold 2,879,422 shares of SLP short. 17.60% of Simulations Plus' shares are currently sold short. Learn More on Simulations Plus' current short interest.

The short interest ratio, also known as the "days to cover ratio", is calculated by dividing the number of shares of a stock sold short divided by its average trading volume. A short interest ratio ranging between 1 and 4 generally indicates strong positive sentiment about a stock and a lack of short sellers. A short interest ratio of 10 or greater indicates strong pessimism about a stock. SLP shares currently have a short interest ratio of 15.2. Learn More on Simulations Plus's short interest ratio.

Companies that have a short interest as a percentage of float below 10% indicates positive investor sentiment and few short sellers. Stocks with a short interest percentage above 10% is considered high, suggesting some investors are pessimistic about the stock. Companies with a short interest percentage of 20% or more indicates widespread negative sentiment. 17.60% of Simulations Plus' floating shares are currently sold short.

Simulations Plus saw a drop in short interest in the month of September. As of September 30th, there was short interest totaling 2,879,422 shares, a drop of 0.5% from the previous total of 2,892,884 shares. Changes in short volume can be used to identify positive and negative investor sentiment. Investors that short sell a stock are betting that its price will decline in the future. An increase in short sale volume suggests bearish (negative) sentiment among investors. A decrease on short sale volume suggests bullish (positive) sentiment.

17.60% of Simulations Plus' shares are currently sold short. Here is how the short interest of companies in the industry of "life sciences tools & services" compare to Simulations Plus: CryoPort, Inc. (5.15%), Ginkgo Bioworks Holdings, Inc. (12.44%), Pacific Biosciences of California, Inc. (15.78%), Mesa Laboratories, Inc. (8.22%), Cytek Biosciences, Inc. (4.48%), OmniAb, Inc. (6.28%), Evotec AG (0.01%), Alpha Teknova, Inc. (3.51%), Standard BioTools Inc. (0.88%), Quantum-Si Incorporated (6.93%),

As of the most recent reporting period, the following stocks had the largest short interest positions: SPDR S&P 500 ETF Trust ($75.10 billion), Invesco QQQ ($52.12 billion), iShares Russell 2000 ETF ($25.28 billion), SPDR S&P Biotech ETF ($11.70 billion), Nebius Group N.V. ($10.54 billion), iShares iBoxx $ Investment Grade Corporate Bond ETF ($9.69 billion), iShares iBoxx $ High Yield Corporate Bond ETF ($9.22 billion), iShares 20+ Year Treasury Bond ETF ($8.80 billion), Financial Select Sector SPDR Fund ($7.65 billion), and Lumentum Holdings Inc. ($7.23 billion). View all of the most shorted stocks.

Short selling SLP is an investing strategy that aims to generate trading profit from Simulations Plus as its price is falling. To short a stock, an investor borrows shares, sells them and buys the shares back on the public market later to return it to the lender. Short sellers are betting that a stock will decline in price. If the stock does drop after selling, the short seller buys it back at a lower price and returns it to the lender. The difference between the sell price and the buy price is the trader's profit.

A short squeeze for Simulations Plus occurs when it has a large amount of short interest and its stock appreciates in price. This forces short sellers to cover their short interest positions by buying actual shares of SLP, which in turn drives the price of the stock up even further.

Short interest is typically published by a stock exchange once per month. However, NASDAQ publishes a report for U.S. stocks, including SLP, twice per month. The most recent reporting period available is September, 30 2026.

Understanding short interest metrics can help you assess how traders are positioning around a stock like SLP:

  • Shares Sold Short: The total number of shares that have been sold by short sellers but have not yet been covered or closed out. A high number may indicate bearish sentiment.
  • Short Float: The percentage of a company’s publicly available shares (or "float") that are sold short. A higher short float suggests a greater portion of the stock is being bet against.
  • Days to Cover (Short Interest Ratio): This estimates how many days it would take short sellers to cover their positions, based on average daily trading volume. Higher values can signal potential for a short squeeze if buying pressure increases.

These metrics are often used by traders to gauge sentiment, volatility risk, and the potential for price movements based on short covering activity.


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Short Interest Tools

Short interest data for NASDAQ:SLP is sourced from the Financial Industry Regulatory Authority (FINRA), with the most recent report published on 10/9/2026. FINRA publishes updated short interest twice a month.
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