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Insmed (INSM) Short Interest Ratio & Short Volume

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$66.19 -2.32 (-3.38%)
As of 02:28 PM Eastern
This is a fair market value price provided by Polygon.io. Learn more.

Insmed Short Interest Data

Insmed (INSM) has a short interest of 15.78 million shares. This marks a 4.37% increase in short interest from the previous month. The short interest ratio (days to cover) is 7.2, indicating that it would take 7.2 days of the average trading volume of 2.33 million shares to cover all short positions.

Current Short Interest
15,780,000 shares
Previous Short Interest
15,120,000 shares
Change Vs. Previous Month
+4.37%
Dollar Volume Sold Short
$1.14 billion
Short Interest Ratio
7.2 Days to Cover
Last Record Date
April 30, 2025
Outstanding Shares
182,139,000 shares
Percentage of Shares Shorted
8.66%
Today's Trading Volume
1,150,784 shares
Average Trading Volume
2,326,600 shares
Today's Volume Vs. Average
49%
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INSM Short Interest Over Time

INSM Days to Cover Over Time

INSM Percentage of Float Shorted Over Time

Insmed Short Interest History

Report DateTotal Shares Sold ShortDollar Volume Sold ShortChange from Previous ReportPercentage of Float ShortedDays to CoverPrice on Report Date
4/30/202515,780,000 shares $1.14 billion +4.4%N/A7.2 $72.00
4/15/202515,120,000 shares $1.07 billion +4.3%8.9%7.1 $71.07
3/31/202514,500,000 shares $1.11 billion +0.2%8.5%7.3 $76.29
3/15/202514,470,000 shares $1.11 billion -1.0%8.5%7.8 $76.55
2/28/202514,620,000 shares $1.19 billion +1.1%8.6%7.6 $81.55
2/15/202514,460,000 shares $1.15 billion -0.6%8.5%7.9 $79.31
1/31/202514,540,000 shares $1.11 billion -3.6%N/A8.1 $76.58
1/15/202515,090,000 shares $1.06 billion -2.3%N/A8.8 $70.20
12/31/202415,440,000 shares $1.07 billion +18.7%N/A10 $69.04
12/15/202413,010,000 shares $931.91 million +3.1%N/A8.5 $71.63
11/30/202412,620,000 shares $948.52 million +4.3%N/A8.3 $75.16
11/15/202412,100,000 shares $802.11 million -12.6%N/A7.8 $66.29
10/31/202413,850,000 shares $931.83 million +1.1%N/A8.1 $67.28
10/15/202413,700,000 shares $1.02 billion +3.8%N/A7.8 $74.66
9/30/202413,200,000 shares $963.60 million +8.0%N/A6.7 $73.00
9/15/202412,220,000 shares $912.35 million -0.1%N/A5.4 $74.66
8/31/202412,230,000 shares $935.23 million -9.4%N/A4.9 $76.47
8/15/202413,500,000 shares $1.00 billion -1.4%N/A3.7 $74.14
7/31/202413,690,000 shares $995.95 million -7.9%N/A3.9 $72.75
7/15/202414,870,000 shares $1.15 billion +15.9%N/A4.2 $77.47
6/30/202412,830,000 shares $859.61 million +10.9%N/A3.7 $67.00
6/15/202411,570,000 shares $739.55 million +6.5%N/A3.5 $63.92
5/31/202410,860,000 shares $597.84 million +9.4%N/A3.6 $55.05
5/15/20249,930,000 shares $247.55 million +16.4%N/A5.6 $24.93
4/30/20248,530,000 shares $210.86 million -9.3%N/A4.8 $24.72
4/15/20249,400,000 shares $252.11 million +4.0%N/A5.5 $26.82
3/31/20249,040,000 shares $245.26 million +2.3%N/A5.4 $27.13
3/15/20248,840,000 shares $227.36 million +3.2%N/A5.5 $25.72
2/29/20248,570,000 shares $237.56 million -7.2%N/A5 $27.72
2/15/20249,230,000 shares $265.36 million -11.2%N/A5.4 $28.75
1/31/202410,390,000 shares $288.84 million +9.1%N/A6.6 $27.80
1/15/20249,520,000 shares $270.94 million -7.8%N/A6 $28.46
12/31/202310,320,000 shares $319.82 million -14.9%N/A7 $30.99
12/15/202312,130,000 shares $344.73 million No ChangeN/A8.5 $28.42
11/30/202312,130,000 shares $303.49 million -14.4%N/A9 $25.02
11/15/202314,170,000 shares $352.83 million -8.2%N/A10.1 $24.90
10/31/202315,440,000 shares $386.93 million +13.4%N/A11.1 $25.06
10/15/202313,620,000 shares $337.23 million +6.4%N/A9.7 $24.76
9/30/202312,800,000 shares $323.20 million -6.4%N/A9.5 $25.25
9/15/202313,680,000 shares $364.02 million +10.0%N/A10.6 $26.61
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8/31/202312,440,000 shares $272.31 million +11.9%N/A10.1 $21.89
8/15/202311,120,000 shares $250.31 million +9.1%N/A10.4 $22.51
7/31/202310,190,000 shares $225.10 million +5.6%N/A9.8 $22.09
7/15/20239,650,000 shares $198.79 million +7.7%N/A9.8 $20.60
6/30/20238,960,000 shares $189.06 million -4.6%N/A9 $21.10
6/15/20239,390,000 shares $187.89 million +4.2%N/A8.9 $20.01
5/31/20239,010,000 shares $171.46 million -2.7%N/A8.1 $19.03
5/15/20239,260,000 shares $178.44 million +1.7%N/A7.8 $19.27
4/30/20239,110,000 shares $177.65 million -8.2%N/A7.5 $19.50
4/15/20239,920,000 shares $166.16 million -6.7%N/A8.3 $16.75
3/31/202310,630,000 shares $181.24 million -3.7%N/A8.6 $17.05
3/15/202311,040,000 shares $197.28 million +6.0%N/A8.6 $17.87
2/28/202310,420,000 shares $212.36 million -2.5%N/A8 $20.38
2/15/202310,690,000 shares $218.18 million -6.4%N/A8.2 $20.41
1/31/202311,420,000 shares $245.87 million +6.0%N/A8.6 $21.53
1/15/202310,770,000 shares $209.48 million +0.8%N/A6.9 $19.45
12/30/202210,690,000 shares $213.59 million +16.1%N/A6.9 $19.98
12/15/20229,210,000 shares $179.23 million +16.9%N/A6.4 $19.46
11/30/20227,880,000 shares $145.70 million +6.1%N/A5.7 $18.49
11/15/20227,430,000 shares $140.35 million -4.3%N/A5.4 $18.89
10/31/20227,760,000 shares $134.40 million -10.3%N/A5.7 $17.32
10/15/20228,650,000 shares $179.06 million +0.5%N/A6.5 $20.70
9/30/20228,610,000 shares $185.46 million +7.2%N/A7.7 $21.54
9/15/20228,030,000 shares $194.17 million +22.6%N/A6.9 $24.18
8/31/20226,550,000 shares $161.26 million -3.3%N/A5.6 $24.62
8/15/20226,770,000 shares $185.50 million -5.8%N/A5.9 $27.40
7/31/20227,190,000 shares $159.04 million -20.6%N/A5.9 $22.12
7/15/20229,060,000 shares $209.56 million -17.4%N/A7.8 $23.13
6/30/202210,970,000 shares $216.33 million -4.1%N/A9.6 $19.72
6/15/202211,440,000 shares $203.63 million +4.9%15.6%10.1 $17.80
5/31/202210,910,000 shares $205.33 million -0.9%N/A10.2 $18.82
5/15/202211,010,000 shares $200.27 million -2.6%N/A10.3 $18.19
4/30/202211,300,000 shares $248.26 million +0.9%N/A11.4 $21.97
4/15/202211,200,000 shares $287.28 million +10.0%N/A11.7 $25.65
3/31/202210,180,000 shares $239.23 million +1.4%N/A10.8 $23.50
3/15/202210,040,000 shares $218.77 million -2.1%N/A11.5 $21.79
2/28/202210,260,000 shares $245.21 million +2.9%N/A11.7 $23.90
2/15/20229,970,000 shares $242.17 million +9.0%N/A11.7 $24.29
1/31/20229,150,000 shares $207.52 million +29.8%N/A11.5 $22.68
1/15/20227,050,000 shares $167.30 million -0.3%N/A9.2 $23.73
12/31/20217,070,000 shares $192.59 million -4.6%N/A9.4 $27.24
12/15/20217,410,000 shares $207.70 million +3.6%N/A9.2 $28.03
11/30/20217,150,000 shares $196.77 million -0.4%N/A8.6 $27.52
11/15/20217,180,000 shares $218.99 million -3.8%N/A8.8 $30.50
10/29/20217,460,000 shares $224.92 million -18.7%N/A9.2 $30.15
10/15/20219,180,000 shares $243.18 million +4.1%8.2%11.8 $26.49
9/30/20218,820,000 shares $242.90 million +1.5%7.9%11.4 $27.54
9/15/20218,690,000 shares $240.19 million -15.8%7.8%12.2 $27.64
8/31/202110,320,000 shares $289.37 million +7.1%9.3%13.4 $28.04
8/13/20219,640,000 shares $227.12 million +5.5%8.7%11.9 $23.56
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7/30/20219,140,000 shares $224.84 million +12.7%8.2%7.7 $24.60
7/15/20218,110,000 shares $222.94 million -1.5%7.4%6.9 $27.49
6/30/20218,230,000 shares $234.23 million +0.9%7.5%7.2 $28.46
6/15/20218,160,000 shares $239.17 million +5.4%7.4%6.9 $29.31
5/28/20217,740,000 shares $190.40 million -5.8%7.1%6.1 $24.60
5/14/20218,220,000 shares $209.45 million +7.0%N/A6.4 $25.48
4/30/20217,680,000 shares $268.03 million -12.1%N/A6.7 $34.90
4/15/20218,740,000 shares $288.59 million -0.6%N/A9.3 $33.02
3/31/20218,790,000 shares $283.74 million +2.5%N/A9 $32.28
3/15/20218,580,000 shares $335.56 million +6.7%N/A8.8 $39.11
2/26/20218,040,000 shares $298.77 million +0.3%N/A9.2 $37.16
2/12/20218,020,000 shares $323.53 million -5.1%N/A9.7 $40.34
1/29/20218,450,000 shares $316.62 million -6.9%N/A10 $37.47
1/15/20219,080,000 shares $339.32 million -1.0%N/A10.3 $37.37
12/31/20209,170,000 shares $311.60 million -4.3%N/A10.9 $33.98
12/15/20209,580,000 shares $382.29 million -7.7%N/A11.4 $39.91
11/30/202010,380,000 shares $413.12 million -9.7%N/A12 $39.80
11/15/202011,500,000 shares $415.61 million +5.8%N/A13.5 $36.14
10/30/202010,870,000 shares $344.25 million -7.3%N/A13 $31.67
10/15/202011,730,000 shares $415.24 million +4.0%N/A14.9 $35.40
9/30/202011,280,000 shares $362.54 million -2.8%N/A14.3 $32.14
9/15/202011,600,000 shares $378.97 million -0.2%N/A13.9 $32.67
8/31/202011,620,000 shares $327.57 million -6.4%N/A14.5 $28.19
8/14/202012,420,000 shares $330.62 million -5.6%N/A14.4 $26.62
7/31/202013,160,000 shares $343.74 million -3.7%N/A14.2 $26.12
7/15/202013,670,000 shares $374.56 million -2.7%N/A12.4 $27.40
6/30/202014,050,000 shares $377.38 million +3.1%N/A12.2 $26.86
6/15/202013,630,000 shares $386.96 million +0.7%N/A11.2 $28.39
5/29/202013,540,000 shares $337.82 million +2.6%N/A10 $24.95

INSM Short Interest - Frequently Asked Questions

What is Insmed's current short interest?

Short interest is the volume of Insmed shares that have been sold short but have not yet been closed out or covered. As of April 30th, investors have sold 15,780,000 shares of INSM short. Learn More on Insmed's current short interest.

What is a good short interest ratio for Insmed?

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. INSM shares currently have a short interest ratio of 7.0. Learn More on Insmed's short interest ratio.

Which institutional investors are shorting Insmed?

As of the most recent reporting period, the following institutional investors, funds, and major shareholders have reported short positions of Insmed: Jane Street Group LLC, Parallax Volatility Advisers L.P., Caption Management LLC, Twin Tree Management LP, HAP Trading LLC, Walleye Trading LLC, Walleye Capital LLC, Garda Capital Partners LP, Simplex Trading LLC, Jefferies Financial Group Inc., and Jefferies Financial Group Inc.. These positions are disclosed in Form 13F filings with the Securities and Exchange Commission.

Is Insmed's short interest increasing or decreasing?

Insmed saw a increase in short interest during the month of April. As of April 30th, there was short interest totaling 15,780,000 shares, an increase of 4.4% from the previous total of 15,120,000 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 Insmed's short interest compare to its competitors?

Here is how the short interest of companies in the industry of "pharmaceutical preparations" compare to Insmed: Takeda Pharmaceutical Company Limited (0.15%), Alnylam Pharmaceuticals, Inc. (2.42%), Teva Pharmaceutical Industries Limited (2.51%), Royalty Pharma plc (5.42%), Summit Therapeutics Inc. (3.66%), Intra-Cellular Therapies, Inc. (2.58%), United Therapeutics Co. (4.45%), Genmab A/S (0.39%), BioMarin Pharmaceutical Inc. (2.35%), Dr. Reddy's Laboratories Limited (1.79%),

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 Insmed stock?

Short selling INSM is an investing strategy that aims to generate trading profit from Insmed as its price is falling. INSM shares are trading up $0.63 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 Insmed?

A short squeeze for Insmed 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 INSM, which in turn drives the price of the stock up even further.

How often is Insmed'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 INSM, twice per month. The most recent reporting period available is April, 30 2025.




This page (NASDAQ:INSM) was last updated on 5/21/2025 by MarketBeat.com Staff
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