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Harmony Biosciences (HRMY) Short Interest Ratio & Short Volume

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$33.90 -0.24 (-0.69%)
As of 10:54 AM Eastern
This is a fair market value price provided by Polygon.io. Learn more.

Harmony Biosciences Short Interest Data

Harmony Biosciences (HRMY) has a short interest of 3.25 million shares, representing 7.46% of the float (the number of shares available for trading by the public). This marks a 0.00% change in short interest from the previous month. The short interest ratio (days to cover) is 4.4, indicating that it would take 4.4 days of the average trading volume of 597,645 shares to cover all short positions.

Current Short Interest
3,250,000 shares
Previous Short Interest
3,250,000 shares
Change Vs. Previous Month
No Change
Dollar Volume Sold Short
$95.78 million
Short Interest Ratio
4.4 Days to Cover
Last Record Date
April 30, 2025
Outstanding Shares
57,424,000 shares
Float Size
43,570,000 shares
Short Percent of Float
7.46%
Today's Trading Volume
28,182 shares
Average Trading Volume
597,645 shares
Today's Volume Vs. Average
5%
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HRMY Short Interest Over Time

HRMY Days to Cover Over Time

HRMY Percentage of Float Shorted Over Time

Harmony Biosciences Short Interest History

Report DateTotal Shares Sold ShortDollar Volume Sold ShortChange from Previous ReportPercentage of Float ShortedDays to CoverPrice on Report Date
4/30/20253,250,000 shares $95.78 million No Change7.5%4.4 $29.47
4/15/20253,250,000 shares $93.44 million -6.9%7.5%4.7 $28.75
3/31/20253,490,000 shares $115.83 million -15.1%8.0%5.1 $33.19
3/15/20254,110,000 shares $134.48 million +5.4%9.5%6.1 $32.72
2/28/20253,900,000 shares $132.02 million +4.0%9.0%6.3 $33.85
2/15/20253,750,000 shares $146.18 million -0.5%8.7%6.5 $38.98
1/31/20253,770,000 shares $146.16 million -31.8%9.3%7 $38.77
1/15/20255,530,000 shares $204.22 million -3.2%13.7%7.3 $36.93
12/31/20245,710,000 shares $196.48 million +5.0%14.1%7.7 $34.41
12/15/20245,440,000 shares $176.20 million -0.2%13.4%7 $32.39
11/30/20245,450,000 shares $188.95 million -6.0%13.5%7.3 $34.67
11/15/20245,800,000 shares $192.65 million -4.3%14.3%8 $33.22
10/31/20246,060,000 shares $194.71 million -18.7%15.2%8.9 $32.13
10/15/20247,450,000 shares $264.48 million -12.8%24.3%16.9 $35.50
9/30/20248,540,000 shares $341.60 million +1.6%27.8%19.8 $40.00
9/15/20248,410,000 shares $327.23 million -4.0%27.4%21.4 $38.91
8/31/20248,760,000 shares $315.18 million +0.3%28.6%23.5 $35.98
8/15/20248,730,000 shares $307.73 million +3.9%28.5%24 $35.25
7/31/20248,400,000 shares $284.42 million +4.2%27.4%22.4 $33.86
7/15/20248,060,000 shares $274.12 million -3.1%26.3%20 $34.01
6/30/20248,320,000 shares $251.01 million +2.3%27.2%20.4 $30.17
6/15/20248,130,000 shares $236.18 million +17.2%26.5%21.2 $29.05
5/31/20246,940,000 shares $204.04 million -2.1%22.7%17.4 $29.40
5/15/20247,090,000 shares $210.57 million +5.5%23.1%17.1 $29.70
4/30/20246,720,000 shares $207.72 million +4.0%16.1%15.9 $30.91
4/15/20246,460,000 shares $190.70 million +1.7%21.0%17.6 $29.52
3/31/20246,350,000 shares $213.23 million +4.3%20.7%17.5 $33.58
3/15/20246,090,000 shares $194.76 million -3.2%19.8%16.9 $31.98
2/29/20246,290,000 shares $201.91 million -1.9%19.9%15.4 $32.10
2/15/20246,410,000 shares $224.73 million +0.9%20.3%15.1 $35.06
1/31/20246,350,000 shares $200.28 million +1.6%19.5%13.8 $31.54
1/15/20246,250,000 shares $195.75 million +3.5%19.2%10.7 $31.32
12/31/20236,040,000 shares $195.09 million +2.4%18.6%8 $32.30
12/15/20235,900,000 shares $198.65 million -0.8%18.1%7.8 $33.67
11/30/20235,950,000 shares $172.91 million +0.3%17.9%7.6 $29.06
11/15/20235,930,000 shares $149.44 million +11.1%17.9%7.4 $25.20
10/31/20235,340,000 shares $125.70 million -22.6%16.1%6.8 $23.54
10/15/20236,900,000 shares $145.66 million -1.6%20.3%9.4 $21.11
9/30/20237,010,000 shares $229.72 million -4.6%20.6%12.4 $32.77
9/15/20237,350,000 shares $275.77 million -5.0%21.6%13.8 $37.52
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8/31/20237,740,000 shares $280.58 million +3.8%22.8%15.7 $36.25
8/15/20237,460,000 shares $245.36 million -2.1%22.0%16.6 $32.89
7/31/20237,620,000 shares $269.52 million -8.5%22.6%16.7 $35.37
7/15/20238,330,000 shares $294.47 million -1.2%24.7%16.7 $35.35
6/30/20238,430,000 shares $296.65 million +2.9%25.0%15.7 $35.19
6/15/20238,190,000 shares $297.05 million +2.1%24.3%9.6 $36.27
5/31/20238,020,000 shares $277.33 million +0.6%23.9%9.2 $34.58
5/15/20237,970,000 shares $291.22 million -2.3%23.8%8.5 $36.54
4/30/20238,160,000 shares $263.08 million +2.1%24.4%8.6 $32.24
4/15/20237,990,000 shares $251.76 million +7.0%24.1%8.9 $31.51
3/31/20237,470,000 shares $243.90 million +19.0%22.6%8 $32.65
3/15/20236,280,000 shares $255.22 million +8.3%19.0%10.6 $40.64
2/28/20235,800,000 shares $255.37 million +8.0%17.5%10.5 $44.03
2/15/20235,370,000 shares $262.16 million +5.5%16.3%10.2 $48.82
1/31/20235,090,000 shares $245.19 million -3.8%15.5%10.7 $48.17
1/15/20235,290,000 shares $250.85 million +21.1%16.2%10.5 $47.42
12/30/20224,370,000 shares $240.79 million +9.3%13.3%8.9 $55.10
12/15/20224,000,000 shares $224.52 million -26.1%12.5%8.8 $56.13
11/30/20225,410,000 shares $323.36 million -4.6%17.0%10.9 $59.77
11/15/20225,670,000 shares $318.09 million -1.7%17.8%11.5 $56.10
10/31/20225,770,000 shares $300.04 million +0.2%18.5%11.3 $52.00
10/15/20225,760,000 shares $294.16 million -5.0%18.5%10.8 $51.07
9/30/20226,060,000 shares $268.40 million +5.6%19.5%11.2 $44.29
9/15/20225,740,000 shares $257.96 million +9.5%18.5%10.1 $44.94
8/31/20225,240,000 shares $230.09 million +2.8%16.9%9.6 $43.91
8/15/20225,100,000 shares $259.59 million +3.0%16.4%9.4 $50.90
7/31/20224,950,000 shares $251.11 million +5.8%16.6%9.2 $50.73
7/15/20224,680,000 shares $251.08 million +6.6%15.7%8.9 $53.65
6/30/20224,390,000 shares $214.10 million +6.3%14.8%8.2 $48.77
6/15/20224,130,000 shares $184.24 million +2.0%14.1%7.9 $44.61
5/31/20224,050,000 shares $176.58 million +1.0%13.8%7.7 $43.60
5/15/20224,010,000 shares $152.30 million +2.6%13.7%7.4 $37.98
4/30/20223,910,000 shares $176.11 million +3.7%14.1%7.6 $45.04
4/15/20223,770,000 shares $194.31 million +3.6%13.7%8.4 $51.54
3/31/20223,640,000 shares $177.09 million +1.4%N/A9.3 $48.65
3/15/20223,590,000 shares $157.31 million +7.2%13.7%9.4 $43.82
2/28/20223,350,000 shares $133.87 million +2.1%12.7%9.3 $39.96
2/15/20223,280,000 shares $130.38 million +10.8%12.6%10.4 $39.75
1/31/20222,960,000 shares $106.15 million -10.0%14.1%9 $35.86
1/15/20223,290,000 shares $120.68 million +10.8%N/A0 $36.68
12/31/20212,970,000 shares $126.64 million -2.9%12.0%6.1 $42.64
12/15/20213,060,000 shares $120.50 million -5.0%12.4%6.4 $39.38
11/30/20213,220,000 shares $109.77 million +22.0%12.9%6.2 $34.09
11/15/20212,640,000 shares $108.27 million +3.5%10.6%5 $41.01
10/29/20212,550,000 shares $105.75 million +94.7%11.6%4.8 $41.47
10/15/20211,310,000 shares $51.61 million -7.1%6.0%2.6 $39.40
9/30/20211,410,000 shares $54.05 million +52.1%6.4%4 $38.33
9/15/2021927,100 shares $33.70 million -4.9%4.1%2.6 $36.35
8/31/2021974,500 shares $33.03 million -10.6%4.3%3.4 $33.89
8/13/20211,090,000 shares $35.04 million +2.8%4.8%3.9 $32.15
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7/30/20211,060,000 shares $27.73 million +16.6%4.9%3.7 $26.16
7/15/2021908,800 shares $26.36 million -1.2%4.2%3.4 $29.01
6/30/2021919,700 shares $25.96 million +53.9%4.2%3.7 $28.23
6/15/2021597,700 shares $18.97 million -6.3%2.8%2.9 $31.73
5/28/2021638,000 shares $20.39 million +7.7%2.9%3 $31.96
5/14/2021592,500 shares $15.46 million +20.3%2.9%3.2 $26.10
4/30/2021492,500 shares $14.29 million +61.9%1.7%3.5 $29.01
4/15/2021304,300 shares $8.85 million -54.1%1.1%2.4 $29.08
3/31/2021663,200 shares $21.24 million +7.5%3.2%5.3 $32.03
3/15/2021617,200 shares $18.84 million +5.6%3.0%4.9 $30.52
2/26/2021584,500 shares $21.15 million +23.4%2.9%4.9 $36.18
2/12/2021473,800 shares $18.16 million -3.4%2.3%3.6 $38.33
1/29/2021490,400 shares $17.51 million -27.2%2.4%3.3 $35.71
1/15/2021673,900 shares $26.02 million No Change3.3%4.2 $38.61

HRMY Short Interest - Frequently Asked Questions

What is Harmony Biosciences' current short interest?

Short interest is the volume of Harmony Biosciences shares that have been sold short but have not yet been covered or closed out. As of April 30th, traders have sold 3,250,000 shares of HRMY short. 7.46% of Harmony Biosciences' shares are currently sold short. Learn More on Harmony Biosciences' current short interest.

What is a good short interest ratio for Harmony Biosciences?

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. HRMY shares currently have a short interest ratio of 4.0. Learn More on Harmony Biosciences's short interest ratio.

Which institutional investors are shorting Harmony Biosciences?

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

What is a good short interest percentage for Harmony Biosciences?

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. 7.46% of Harmony Biosciences' floating shares are currently sold short.

What is Harmony Biosciences' float size?

Harmony Biosciences currently has issued a total of 57,424,000 shares. Some of Harmony Biosciences' outstanding shares are available for trading, while others are subject to various restrictions. The public float, also referred to as floating shares or "the float", are shares that publicly owned, unrestricted and available to trade on the open market. Harmony Biosciences currently has a public float of 43,570,000 shares.

How does Harmony Biosciences' short interest compare to its competitors?

7.46% of Harmony Biosciences' shares are currently sold short. Here is how the short interest of companies in the industry of "pharmaceutical products" compare to Harmony Biosciences: Roivant Sciences Ltd. (12.03%), Revolution Medicines, Inc. (8.89%), Elanco Animal Health Incorporated (5.00%), Blueprint Medicines Co. (8.76%), BridgeBio Pharma, Inc. (11.68%), Verona Pharma plc (9.87%), TG Therapeutics, Inc. (14.56%), Grifols, S.A. (1.26%), Lantheus Holdings, Inc. (10.28%), Legend Biotech Co. (3.67%),

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 Harmony Biosciences stock?

Short selling HRMY is an investing strategy that aims to generate trading profit from Harmony Biosciences as its price is falling. HRMY shares are trading down $0.37 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 Harmony Biosciences?

A short squeeze for Harmony Biosciences 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 HRMY, which in turn drives the price of the stock up even further.

How often is Harmony Biosciences' 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 HRMY, twice per month. The most recent reporting period available is April, 30 2025.




This page (NASDAQ:HRMY) was last updated on 5/23/2025 by MarketBeat.com Staff
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