Free Trial

ProPhase Labs (PRPH) Short Interest Ratio & Short Volume

ProPhase Labs logo
$0.31 +0.02 (+6.97%)
Closing price 05/22/2025 04:00 PM Eastern
Extended Trading
$0.30 -0.01 (-2.61%)
As of 08:42 AM 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.

ProPhase Labs Short Interest Data

ProPhase Labs (PRPH) has a short interest of 457,100 shares. This marks a -64.29% decrease in short interest from the previous month. The short interest ratio (days to cover) is 0.0, indicating that it would take 0.0 days of the average trading volume of 2.78 million shares to cover all short positions.

Current Short Interest
457,100 shares
Previous Short Interest
1,280,000 shares
Change Vs. Previous Month
-64.29%
Dollar Volume Sold Short
$159,070.80
Short Interest Ratio
0.0 Days to Cover
Last Record Date
April 30, 2025
Outstanding Shares
41,879,000 shares
Percentage of Shares Shorted
1.09%
Today's Trading Volume
1,634,768 shares
Average Trading Volume
2,775,625 shares
Today's Volume Vs. Average
59%
Short Selling ProPhase Labs?
cover of A Guide to High-Short-Interest Stocks and How to Trade Them ebook

Sign up to receive the latest short interest report for ProPhase Labs and its competitors with MarketBeat's FREE newsletter.

Skip Charts & View Short Interest History

PRPH Short Interest Over Time

PRPH Days to Cover Over Time

PRPH Percentage of Float Shorted Over Time

ProPhase Labs Short Interest History

Report DateTotal Shares Sold ShortDollar Volume Sold ShortChange from Previous ReportPercentage of Float ShortedDays to CoverPrice on Report Date
4/30/2025457,100 shares $159,070.80 -64.3%N/A0 $0.35
4/15/20251,280,000 shares $368,512.00 +7.6%6.8%0.1 $0.29
3/31/20251,190,000 shares $481,117.00 +50.0%6.3%0.1 $0.40
3/15/2025793,400 shares $311,488.84 -52.2%4.2%0.1 $0.39
2/28/20251,660,000 shares $745,008.00 -62.4%8.8%0.2 $0.45
2/15/20254,420,000 shares $1.44 million +5,106.1%23.3%0.5 $0.33
1/31/202584,900 shares $22,354.17 -27.1%N/A0.1 $0.26
1/15/2025116,400 shares $69,851.64 +19.1%N/A0.4 $0.60
12/31/202497,700 shares $73,968.67 -10.5%N/A0.4 $0.76
12/15/2024109,200 shares $71,089.20 -24.6%N/A0.6 $0.65
11/30/2024144,900 shares $111,573.00 -41.0%N/A1 $0.77
11/15/2024245,700 shares $184,275.00 +59.4%N/A2.1 $0.75
10/31/2024154,100 shares $352,889.00 -25.2%N/A1.9 $2.29
10/15/2024206,100 shares $471,969.00 -10.8%N/A7.1 $2.29
9/30/2024231,000 shares $559,020.00 -9.9%N/A7.7 $2.42
9/15/2024256,300 shares $627,935.00 +3.0%N/A8.1 $2.45
8/31/2024248,900 shares $669,541.00 -9.9%N/A8.4 $2.69
8/15/2024276,300 shares $624,438.00 -13.3%N/A8.5 $2.26
7/31/2024318,500 shares $974,610.00 +0.7%N/A9.4 $3.06
7/15/2024316,400 shares $1.02 million -1.8%N/A8.6 $3.22
6/30/2024322,300 shares $1.35 million +0.5%N/A5.4 $4.18
6/15/2024320,800 shares $1.47 million +2.1%N/A5.3 $4.59
5/31/2024314,200 shares $1.62 million +20.8%N/A5.2 $5.15
5/15/2024260,100 shares $1.34 million -1.9%N/A4.3 $5.14
4/30/2024265,100 shares $1.22 million -3.5%1.9%5 $4.61
4/15/2024274,700 shares $1.69 million +6.8%2.0%5.5 $6.16
3/31/2024257,300 shares $1.66 million +3.7%1.8%9.6 $6.47
3/15/2024248,200 shares $1.25 million -16.9%1.8%9.5 $5.04
2/29/2024298,500 shares $1.33 million +0.7%2.1%11.2 $4.47
2/15/2024296,400 shares $1.47 million -0.2%2.1%12.1 $4.96
1/31/2024297,000 shares $1.44 million +4.7%2.1%11.2 $4.85
1/15/2024283,600 shares $1.39 million -7.3%2.0%10.9 $4.90
12/31/2023306,000 shares $1.38 million -5.1%2.2%12.2 $4.52
12/15/2023322,400 shares $1.45 million -20.2%2.3%13.1 $4.50
11/30/2023404,000 shares $2.05 million +45.5%2.9%15.2 $5.07
11/15/2023277,700 shares $1.21 million -5.3%2.0%8.8 $4.35
10/31/2023293,100 shares $1.29 million -1.9%2.3%7.9 $4.39
10/15/2023298,800 shares $1.31 million -3.9%2.3%7.7 $4.37
9/30/2023311,000 shares $1.36 million +0.2%2.4%7.5 $4.37
9/15/2023310,300 shares $1.41 million -13.8%2.4%7.1 $4.56
Musk’s Project Colossus could mint millionaires (Ad)

I predict this single breakthrough could make Elon the world’s first trillionaire — and mint more new millionaires than any tech advance in history. And for a limited time, you have the chance to claim a stake in this project, even though it’s housed inside Elon’s private company, xAI.

All the details are waiting for you now — but you need to act before the May 1st funding window clos
8/31/2023360,100 shares $1.54 million +0.5%2.8%7.1 $4.28
8/15/2023358,300 shares $2.04 million +0.3%2.8%6.3 $5.70
7/31/2023357,200 shares $2.60 million +8.9%2.7%5.9 $7.28
7/15/2023327,900 shares $2.33 million +1.1%2.5%4.5 $7.11
6/30/2023324,400 shares $2.36 million +1.8%2.5%4.3 $7.26
6/15/2023318,700 shares $2.38 million -8.1%2.4%4.1 $7.47
5/31/2023346,700 shares $3.29 million +2.5%2.6%4.7 $9.49
5/15/2023338,400 shares $2.72 million -4.1%2.6%5.6 $8.04
4/30/2023352,700 shares $2.65 million -7.9%2.7%6.8 $7.50
4/15/2023382,800 shares $3.12 million +23.5%2.9%8.5 $8.16
3/31/2023309,900 shares $2.36 million +17.9%2.4%6.6 $7.62
3/15/2023262,900 shares $2.12 million -10.0%2.2%5.2 $8.06
2/28/2023292,000 shares $2.13 million -3.3%2.4%5.9 $7.31
2/15/2023301,900 shares $2.42 million -6.0%2.5%5.6 $8.01
1/31/2023321,200 shares $2.63 million -8.7%2.6%4.9 $8.18
1/15/2023351,700 shares $3.29 million -5.8%2.8%5 $9.36
12/30/2022373,300 shares $3.59 million -9.6%2.9%4.8 $9.63
12/15/2022412,700 shares $4.20 million +10.1%3.2%5.1 $10.18
11/30/2022375,000 shares $3.89 million -11.9%3.0%4.3 $10.37
11/15/2022425,800 shares $5.03 million +16.2%3.4%4.5 $11.81
10/31/2022366,400 shares $4.42 million -21.1%2.9%3.5 $12.05
10/15/2022464,400 shares $4.83 million +13.9%3.7%4 $10.41
9/30/2022407,700 shares $4.60 million +28.9%3.2%2.7 $11.28
9/15/2022316,300 shares $3.38 million -4.2%2.5%1.8 $10.68
8/31/2022330,300 shares $4.00 million -9.8%2.6%1.8 $12.11
8/15/2022366,300 shares $4.47 million +31.6%3.0%1.9 $12.19
7/31/2022278,300 shares $2.88 million -2.7%3.3%1.7 $10.34
7/15/2022286,000 shares $4.00 million +22.8%3.4%1.9 $13.98
6/30/2022232,900 shares $2.95 million +61.4%2.8%2.2 $12.68
6/15/2022144,300 shares $1.53 million +65.3%1.7%2 $10.61
5/31/202287,300 shares $790,065.00 -1.0%0.7%1.7 $9.05
5/15/202288,200 shares $620,046.00 +2.3%0.7%2.7 $7.03
4/30/202286,200 shares $639,604.00 +21.4%0.7%3.2 $7.42
4/15/202271,000 shares $590,010.00 -31.2%0.6%2.8 $8.31
3/31/2022103,200 shares $722,400.00 +1.7%0.8%4.5 $7.00
3/15/2022101,500 shares $652,645.00 -1.4%0.8%5 $6.43
2/28/2022102,900 shares $650,328.00 +12.2%0.8%3.7 $6.32
2/15/202291,700 shares $633,647.00 -19.8%0.7%2.6 $6.91
1/31/2022114,300 shares $827,532.00 +13.5%0.9%3 $7.24
1/15/2022100,700 shares $735,110.00 -20.1%0.8%2.4 $7.30
12/31/2021126,000 shares $903,420.00 +17.4%1.0%2.5 $7.17
12/15/2021107,300 shares $743,589.00 -29.8%0.8%2.1 $6.93
11/30/2021152,800 shares $959,584.00 -10.2%1.2%2.9 $6.28
11/15/2021170,100 shares $1.02 million -10.1%1.3%3.6 $6.00
10/29/2021189,100 shares $1.11 million -9.6%1.5%2.8 $5.89
10/15/2021209,100 shares $1.19 million -13.3%1.7%2.3 $5.70
9/30/2021241,300 shares $1.25 million -7.0%1.9%2.3 $5.20
9/15/2021259,500 shares $1.28 million -14.1%2.1%1.5 $4.95
8/31/2021302,100 shares $1.62 million -5.6%2.4%0.9 $5.36
8/13/2021320,000 shares $2.07 million -17.6%2.6%0.9 $6.46
Watch This Robotics Demo Before July 23rd (Ad)

Jeff Brown, the tech legend who picked shares of Nvidia in 2016 before they jumped by more than 22,000%... Just did a demo of what Nvidia’s CEO said will be "the first multitrillion-dollar robotics industry."

7/30/2021388,500 shares $2.78 million -7.0%3.1%1.1 $7.16
7/15/2021417,900 shares $2.57 million -9.0%3.4%1.3 $6.15
6/30/2021459,100 shares $2.85 million +42.2%3.7%1.3 $6.20
6/15/2021322,800 shares $1.90 million +69.6%2.6%0.8 $5.90
5/28/2021190,300 shares $913,440.00 -12.3%1.5%0.5 $4.80
5/14/2021217,000 shares $1.21 million +17.5%1.7%0.8 $5.56
4/30/2021184,700 shares $971,522.00 +39.8%1.5%0.7 $5.26
4/15/2021132,100 shares $696,167.00 -24.2%1.1%0.4 $5.27
3/31/2021174,300 shares $1.09 million +42.8%1.4%0.5 $6.27
3/15/2021122,100 shares $880,341.00 +62.8%1.0%0.6 $7.21
2/26/202175,000 shares $579,000.00 -24.8%0.6%0.4 $7.72
2/12/202199,700 shares $1.04 million -11.0%0.8%0.6 $10.41
1/29/2021112,000 shares $1.09 million +31.0%1.0%0.7 $9.76
1/15/202185,500 shares $1.37 million No Change0.7%0.5 $15.99

PRPH Short Interest - Frequently Asked Questions

What is ProPhase Labs' current short interest?

Short interest is the volume of ProPhase Labs shares that have been sold short but have not yet been covered or closed out. As of April 30th, investors have sold 457,100 shares of PRPH short. Learn More on ProPhase Labs' current short interest.

Which institutional investors are shorting ProPhase Labs?

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

Is ProPhase Labs' short interest increasing or decreasing?

ProPhase Labs saw a drop in short interest in April. As of April 30th, there was short interest totaling 457,100 shares, a drop of 64.3% from the previous total of 1,280,000 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 ProPhase Labs' short interest compare to its competitors?

Here is how the short interest of companies in the industry of "pharmaceutical products" compare to ProPhase Labs: Ikena Oncology, Inc. (0.93%), Cue Biopharma, Inc. (1.15%), Prelude Therapeutics Incorporated (3.60%), Celularity Inc. (12.21%), Shattuck Labs, Inc. (3.97%), Werewolf Therapeutics, Inc. (6.49%), Renovaro Inc. (6.45%), ImmuCell Co. (0.11%), Precision BioSciences, Inc. (22.45%), Forte Biosciences, Inc. (2.06%),

Which stocks are the most shorted right now?

As of the most recent reporting period, the following stocks had the largest short interest positions: Spotify Technology S.A. ($4.67 billion), Charter Communications, Inc. ($4.58 billion), Capital One Financial Co. ($4.47 billion), The Kroger Co. ($2.56 billion), Reddit, Inc. ($2.23 billion), Rivian Automotive, Inc. ($2.16 billion), Live Nation Entertainment, Inc. ($1.90 billion), SoFi Technologies, Inc. ($1.85 billion), Zscaler, Inc. ($1.75 billion), and Omnicom Group Inc. ($1.75 billion). View all of the most shorted stocks.

What does it mean to sell short ProPhase Labs stock?

Short selling PRPH is an investing strategy that aims to generate trading profit from ProPhase Labs as its price is falling. PRPH shares are trading up $0.02 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 ProPhase Labs?

A short squeeze for ProPhase Labs 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 PRPH, which in turn drives the price of the stock up even further.

How often is ProPhase Labs' 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 PRPH, twice per month. The most recent reporting period available is April, 30 2025.




This page (NASDAQ:PRPH) was last updated on 5/23/2025 by MarketBeat.com Staff
From Our Partners