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Prima BioMed (IMMP) Short Interest Ratio & Short Volume

Prima BioMed logo
$1.64 -0.02 (-1.20%)
Closing price 04:00 PM Eastern
Extended Trading
$1.66 +0.02 (+1.16%)
As of 05:36 PM Eastern
Extended trading is trading that happens on electronic markets outside of regular trading hours. This is a fair market value extended hours price provided by Polygon.io. Learn more.

Prima BioMed Short Interest Data

Prima BioMed (IMMP) has a short interest of 4.29 million shares, representing 3.02% of the float (the number of shares available for trading by the public). This marks a 1.42% increase in short interest from the previous month. The short interest ratio (days to cover) is 50.2, indicating that it would take 50.2 days of the average trading volume of 153,153 shares to cover all short positions.

Current Short Interest
4,290,000 shares
Previous Short Interest
4,230,000 shares
Change Vs. Previous Month
+1.42%
Dollar Volume Sold Short
$6.91 million
Short Interest Ratio
50.2 Days to Cover
Last Record Date
August 31, 2025
Outstanding Shares
146,790,000 shares
Short Percent of Float
3.02%
Today's Trading Volume
31,955 shares
Average Trading Volume
153,153 shares
Today's Volume Vs. Average
21%
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Skip Charts & View Short Interest History

IMMP Short Interest Over Time

IMMP Days to Cover Over Time

IMMP Percentage of Float Shorted Over Time

Prima BioMed Short Interest History

Report DateTotal Shares Sold ShortDollar Volume Sold ShortChange from Previous ReportPercentage of Float ShortedDays to CoverPrice on Report Date
8/31/20254,290,000 shares $6.91 million +1.4%3.0%50.2 $1.61
8/15/20254,230,000 shares $7.32 million +1.7%N/A49.2 $1.73
7/31/20254,160,000 shares $7.24 million +0.2%2.9%38.7 $1.74
7/15/20254,150,000 shares $6.76 million -1.0%N/A14.8 $1.63
6/30/20254,190,000 shares $6.87 million No Change3.0%14.9 $1.64
6/15/20254,190,000 shares $7.29 million +1.2%3.0%14.8 $1.74
5/31/20254,140,000 shares $7.91 million +1.0%2.9%15.1 $1.91
5/15/20254,100,000 shares $8.12 million +1.0%2.9%15 $1.98
4/30/20254,060,000 shares $6.94 million -1.7%N/A15.9 $1.71
4/15/20254,130,000 shares $6.24 million -8.8%2.9%54.2 $1.51
3/31/20254,530,000 shares $7.97 million -4.6%3.2%58.5 $1.76
3/15/20254,750,000 shares $8.46 million -5.6%3.4%57.7 $1.78
2/28/20255,030,000 shares $9.71 million -1.2%3.6%47.6 $1.93
2/15/20255,090,000 shares $9.98 million -0.4%3.6%48.9 $1.96
1/31/20255,110,000 shares $10.68 million +1.0%N/A43.1 $2.09
1/15/20255,060,000 shares $9.72 million -1.2%N/A43 $1.92
12/31/20245,120,000 shares $11.11 million No ChangeN/A43.4 $2.17
12/15/20245,120,000 shares $11.16 million +0.8%N/A43.5 $2.18
11/30/20245,080,000 shares $10.31 million -1.0%N/A44.7 $2.03
11/15/20245,130,000 shares $10.52 million +2.4%N/A44.9 $2.05
10/31/20245,010,000 shares $9.09 million +0.8%N/A45.2 $1.82
10/15/20244,970,000 shares $10.24 million +4.2%N/A38.2 $2.06
9/30/20244,770,000 shares $10.54 million -0.6%N/A17.5 $2.21
9/15/20244,800,000 shares $12.67 million -0.6%N/A14.4 $2.64
8/31/20244,830,000 shares $12.70 million -2.2%N/A14.2 $2.63
8/15/20244,940,000 shares $10.72 million +4.4%N/A13.6 $2.17
7/31/20244,730,000 shares $10.22 million -10.1%N/A12.7 $2.16
7/15/20245,260,000 shares $10.73 million +18.5%N/A12.4 $2.04
6/30/20244,440,000 shares $8.92 million +6.2%N/A15 $2.01
6/15/20244,180,000 shares $11.33 million +6.6%N/A16.9 $2.71
5/31/20243,920,000 shares $11.68 million +5.1%N/A16.7 $2.98
5/15/20243,730,000 shares $10.52 million +38.7%N/A16.4 $2.82
4/30/20242,690,000 shares $7.24 million +84.3%N/A13.1 $2.69
4/15/20241,460,000 shares $3.37 million +15.9%N/A9.2 $2.31
3/31/20241,260,000 shares $2.94 million +10.5%N/A8.9 $2.33
3/15/20241,140,000 shares $2.72 million +5.6%N/A8.7 $2.39
2/29/20241,080,000 shares $2.53 million -0.9%N/A6.8 $2.34
2/15/20241,090,000 shares $2.51 million +25.3%N/A8 $2.30
1/31/2024869,600 shares $1.89 million +53.4%N/A6.1 $2.17
1/15/2024566,800 shares $1.46 million +4.9%N/A3.2 $2.58
12/31/2023540,200 shares $1.30 million +51.4%N/A3 $2.40
12/15/2023356,700 shares $888.18 thousand +3.5%N/A2.1 $2.49
11/30/2023344,700 shares $685.95 thousand -8.1%N/A2.4 $1.99
11/15/2023375,200 shares $690.37 thousand -7.1%N/A2.5 $1.84
10/31/2023403,900 shares $763.37 thousand -11.9%N/A2.8 $1.89
10/15/2023458,300 shares $843.27 thousand -3.5%N/A3 $1.84
9/30/2023474,800 shares $902.12 thousand -2.1%N/A3.5 $1.90
9/15/2023485,200 shares $980.10 thousand +2.0%N/A3 $2.02
8/31/2023475,600 shares $903.64 thousand +10.9%N/A2.6 $1.90
8/15/2023428,800 shares $861.89 thousand +12.5%N/A1.4 $2.01
7/31/2023381,100 shares $823.18 thousand +29.6%N/A0.2 $2.16
7/15/2023294,000 shares $640.92 thousand -40.0%N/A0.2 $2.18
6/30/2023490,300 shares $1.03 million -26.4%N/A0.3 $2.11
6/15/2023666,200 shares $1.42 million +1.9%N/A0.4 $2.13
5/31/2023653,800 shares $1.31 million -16.1%N/A0.4 $2.01
5/15/2023779,500 shares $1.20 million -0.4%N/A0.5 $1.54
4/30/2023782,600 shares $1.28 million -15.3%N/A9 $1.64
4/15/2023923,400 shares $1.47 million +16.4%N/A10.6 $1.59
3/31/2023793,500 shares $1.33 million -3.0%N/A10 $1.68
3/15/2023818,000 shares $1.42 million -0.6%N/A6 $1.73
2/28/2023822,900 shares $1.34 million +1.3%N/A5.6 $1.63
2/15/2023812,600 shares $1.44 million +5.0%N/A5 $1.77
1/31/2023773,800 shares $1.51 million +65.0%N/A4.4 $1.95
1/15/2023469,100 shares $942.89 thousand +8.1%N/A2.7 $2.01
12/30/2022434,000 shares $759.50 thousand +112.2%N/A2.6 $1.75
12/15/2022204,500 shares $384.46 thousand +9.1%N/A1.3 $1.88
11/30/2022187,400 shares $449.76 thousand -4.8%N/A2.1 $2.40
11/15/2022196,800 shares $429.02 thousand +4.7%N/A2.7 $2.18
10/31/2022188,000 shares $336.52 thousand -18.9%N/A2.8 $1.79
10/15/2022231,700 shares $443.71 thousand +32.5%N/A4 $1.92
9/30/2022174,900 shares $272.84 thousand +34.4%N/A3 $1.56
9/15/2022130,100 shares $243.29 thousand -12.3%N/A2.3 $1.87
8/31/2022148,400 shares $299.77 thousand +2.5%N/A2.1 $2.02
8/15/2022144,800 shares $327.25 thousand -6.9%N/A1.4 $2.26
7/31/2022155,500 shares $351.43 thousand -15.5%N/A1.5 $2.26
7/15/2022184,100 shares $386.61 thousand -13.1%N/A1.6 $2.10
6/30/2022211,800 shares $429.95 thousand -17.0%N/A1.8 $2.03
6/15/2022255,200 shares $548.68 thousand +12.9%N/A2 $2.15
5/31/2022226,100 shares $671.52 thousand +9.5%N/A1.6 $2.97
5/15/2022206,400 shares $497.42 thousand -10.6%N/A1.6 $2.41
4/30/2022230,800 shares $528.53 thousand +16.6%N/A1.7 $2.29
4/15/2022198,000 shares $504.90 thousand -6.7%N/A1.2 $2.55
3/31/2022212,100 shares $581.15 thousand -2.7%N/A1.2 $2.74
3/15/2022217,900 shares $542.57 thousand +20.5%N/A1.2 $2.49
2/28/2022180,900 shares $437.78 thousand +0.7%N/A0.9 $2.42
2/15/2022179,600 shares $470.55 thousand +18.8%N/A0.9 $2.62
1/31/2022151,200 shares $415.80 thousand +0.6%N/A0.5 $2.75
1/15/2022150,300 shares $486.97 thousand +13.4%N/A0 $3.24
12/31/2021132,600 shares $434.93 thousand +140.2%N/A0.4 $3.28
12/15/202155,200 shares $185.47 thousand -53.6%N/A0.2 $3.36
11/30/2021118,900 shares $407.83 thousand -44.3%N/A0.3 $3.43
11/15/2021213,300 shares $908.66 thousand +110.4%N/A0.6 $4.26
10/29/2021101,400 shares $433.99 thousand +83.0%N/A0.3 $4.28
10/15/202155,400 shares $218.83 thousand -97.9%N/A0.2 $3.95
9/30/20212,640,000 shares $10.22 million +3.9%N/A9.1 $3.87
9/15/20212,540,000 shares $9.75 million -3.1%N/A7.8 $3.84
8/31/20212,620,000 shares $11.11 million +13.4%N/A7.7 $4.24
8/13/20212,310,000 shares $8.22 million +17.9%N/A5.3 $3.56
7/30/20211,960,000 shares $6.70 million +44.1%N/A3.1 $3.42
7/15/20211,360,000 shares $4.80 million +155.9%N/A2 $3.53
6/30/2021531,400 shares $2.06 million +573.5%N/A0.8 $3.87
6/15/202178,900 shares $362.94 thousand -83.8%N/A0 $4.60
5/28/2021485,800 shares $2.45 million +89.4%N/A0.2 $5.04
5/14/2021256,500 shares $884.93 thousand +11.5%N/A0.1 $3.45
4/30/2021230,100 shares $796.15 thousand +93.7%N/A0.1 $3.46
4/15/2021118,800 shares $413.42 thousand -64.7%N/A0 $3.48
3/31/2021336,200 shares $968.26 thousand +122.4%N/A0.1 $2.88
3/15/2021151,200 shares $408.24 thousand +132.6%N/A0.2 $2.70
2/26/202165,000 shares $174.85 thousand +3.2%N/A0 $2.69
2/12/202163,000 shares $212.31 thousand +12.1%N/A0 $3.37
1/29/202156,200 shares $174.22 thousand -72.6%N/A0 $3.10
1/15/2021204,800 shares $716.80 thousand +558.5%N/A0 $3.50
12/31/202031,100 shares $96.10 thousand -96.9%N/A0 $3.09
12/15/2020996,400 shares $2.98 million +301.5%N/A0.2 $2.99
11/30/2020248,200 shares $471.58 thousand -20.7%N/A0.9 $1.90
11/15/2020313,100 shares $670.03 thousand +3.2%N/A1 $2.14
10/30/2020303,500 shares $543.27 thousand -14.1%N/A1 $1.79
10/15/2020353,100 shares $607.33 thousand -11.6%N/A0.9 $1.72
9/30/2020399,300 shares $690.79 thousand -5.8%N/A0.3 $1.73
9/15/2020423,900 shares $682.48 thousand +35.9%N/A0.3 $1.61

IMMP Short Interest - Frequently Asked Questions

What is Prima BioMed's current short interest?

Short interest is the volume of Prima BioMed shares that have been sold short but have not yet been covered or closed out. As of August 31st, traders have sold 4,290,000 shares of IMMP short. 3.02% of Prima BioMed's shares are currently sold short. Learn More on Prima BioMed's current short interest.

What is a good short interest ratio for Prima BioMed?

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. IMMP shares currently have a short interest ratio of 50.0. Learn More on Prima BioMed's short interest ratio.

Which institutional investors are shorting Prima BioMed?

As of the most recent reporting period, the following institutional investors, funds, and major shareholders have reported short positions of Prima BioMed: Group One Trading LLC. These positions are disclosed in Form 13F filings with the Securities and Exchange Commission.

What is a good short interest percentage for Prima BioMed?

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. 3.02% of Prima BioMed's floating shares are currently sold short.

Is Prima BioMed's short interest increasing or decreasing?

Prima BioMed saw a increase in short interest during the month of August. As of August 31st, there was short interest totaling 4,290,000 shares, an increase of 1.4% from the previous total of 4,230,000 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.

How does Prima BioMed's short interest compare to its competitors?

3.02% of Prima BioMed's shares are currently sold short. Here is how the short interest of companies in the industry of "pharmaceutical products" compare to Prima BioMed: Cronos Group Inc. (1.31%), CorMedix Inc (16.82%), Taysha Gene Therapies, Inc. (15.54%), Immunome, Inc. (17.09%), Amylyx Pharmaceuticals, Inc. (12.64%), Iovance Biotherapeutics, Inc. (24.37%), Phathom Pharmaceuticals, Inc. (24.11%), Urogen Pharma (15.92%), Trevi Therapeutics, Inc. (11.74%), Dianthus Therapeutics, Inc. (23.76%),

Which stocks are the most shorted right now?

As of the most recent reporting period, the following stocks had the largest short interest positions: SPDR S&P 500 ETF Trust ($73.23 billion), Invesco QQQ ($29.52 billion), iShares Russell 2000 ETF ($20.82 billion), iShares 20+ Year Treasury Bond ETF ($10.76 billion), Palo Alto Networks, Inc. ($9.37 billion), Strategy Inc ($7.58 billion), Invesco S&P 500 Equal Weight ETF ($6.78 billion), SPDR S&P Biotech ETF ($6.72 billion), AppLovin Corporation ($6.37 billion), and iShares iBoxx $ Investment Grade Corporate Bond ETF ($6.29 billion). View all of the most shorted stocks.

What does it mean to sell short Prima BioMed stock?

Short selling IMMP is an investing strategy that aims to generate trading profit from Prima BioMed as its price is falling. IMMP shares are trading down $0.03 today. 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.

How does a short squeeze work against Prima BioMed?

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

How often is Prima BioMed's short interest reported?

Short interest is typically published by a stock exchange once per month. However, NASDAQ publishes a report for U.S. stocks, including IMMP, twice per month. The most recent reporting period available is August, 31 2025.




This page (NASDAQ:IMMP) was last updated on 9/12/2025 by MarketBeat.com Staff
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