Free Trial

Inspire Medical Systems (INSP) Short Interest Ratio & Short Volume

Inspire Medical Systems logo
$165.38 -5.62 (-3.29%)
Closing price 03/25/2025 03:58 PM Eastern
Extended Trading
$165.32 -0.06 (-0.04%)
As of 09:02 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.

Inspire Medical Systems Short Interest Data

Inspire Medical Systems (INSP) has a short interest of 3.14 million shares, representing 11.04% of the float (the number of shares available for trading by the public). This marks a 8.28% increase in short interest from the previous month. The short interest ratio (days to cover) is 5.8, indicating that it would take 5.8 days of the average trading volume of 580,185 shares to cover all short positions.

Current Short Interest
3,140,000 shares
Previous Short Interest
2,900,000 shares
Change Vs. Previous Month
+8.28%
Dollar Volume Sold Short
$582.66 million
Short Interest Ratio
5.8 Days to Cover
Last Record Date
February 28, 2025
Outstanding Shares
29,760,000 shares
Short Percent of Float
11.04%
Today's Trading Volume
450,146 shares
Average Trading Volume
580,185 shares
Today's Volume Vs. Average
78%
Short Selling Inspire Medical Systems?
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 Inspire Medical Systems and its competitors with MarketBeat's FREE newsletter.

Skip Charts & View Short Interest History

INSP Short Interest Over Time

INSP Days to Cover Over Time

INSP Percentage of Float Shorted Over Time

Remove Ads

Inspire Medical Systems Short Interest History

Report DateTotal Shares Sold ShortDollar Volume Sold ShortChange from Previous ReportPercentage of Float ShortedDays to CoverPrice on Report Date
2/28/20253,140,000 shares $582.66 million +8.3%11.0%5.8 $185.56
2/15/20252,900,000 shares $535.73 million +15.1%10.2%5.4 $184.73
1/31/20252,520,000 shares $488.63 million +10.5%N/A4.6 $193.90
1/15/20252,280,000 shares $401.90 million -3.8%N/A4.2 $176.27
12/31/20242,370,000 shares $439.35 million +2.2%N/A4.9 $185.38
12/15/20242,320,000 shares $435.77 million +16.0%N/A4.8 $187.83
11/30/20242,000,000 shares $385.52 million -10.7%N/A3.5 $192.76
11/15/20242,240,000 shares $387.18 million +14.9%N/A3.7 $172.85
10/31/20241,950,000 shares $380.39 million +2.1%N/A3.4 $195.07
10/15/20241,910,000 shares $379.92 million -4.5%N/A3 $198.91
9/30/20242,000,000 shares $422.10 million +65.3%N/A3.1 $211.05
9/15/20241,210,000 shares $246.83 million -6.9%N/A1.7 $203.99
8/31/20241,300,000 shares $233.77 million +2.4%N/A2.1 $179.82
8/15/20241,270,000 shares $241.07 million +5.8%N/A2.1 $189.82
7/31/20241,200,000 shares $169.26 million -16.7%N/A1.6 $141.05
7/15/20241,440,000 shares $199.74 million -11.1%N/A2.3 $138.71
6/30/20241,620,000 shares $216.80 million -9.5%N/A2.4 $133.83
6/15/20241,790,000 shares $298.43 million -8.7%N/A2.7 $166.72
5/31/20241,960,000 shares $311.40 million +6.0%N/A3.3 $158.88
5/15/20241,850,000 shares $295.50 million -19.6%N/A3.2 $159.73
4/30/20242,300,000 shares $555.82 million -0.4%N/A3.9 $241.66
4/15/20242,310,000 shares $515.45 million +11.1%N/A4.6 $223.14
3/31/20242,080,000 shares $446.76 million +11.2%N/A4.3 $214.79
3/15/20241,870,000 shares $360.44 million +6.9%N/A3.7 $192.75
2/29/20241,750,000 shares $313.02 million -1.1%N/A3 $178.87
2/15/20241,770,000 shares $340.94 million +12.7%N/A2.9 $192.62
1/31/20241,570,000 shares $331.07 million +14.6%N/A2.2 $210.87
1/15/20241,370,000 shares $254.63 million +8.7%N/A1.9 $185.86
12/31/20231,260,000 shares $256.32 million +12.5%N/A1.6 $203.43
12/15/20231,120,000 shares $210.41 million +9.8%N/A1.5 $187.87
11/30/20231,020,000 shares $148.24 million -22.7%N/A1.4 $145.33
11/15/20231,320,000 shares $192.40 million +10.0%N/A1.8 $145.76
10/31/20231,200,000 shares $176.59 million +2.6%N/A1.7 $147.16
10/15/20231,170,000 shares $176.05 million -7.1%N/A1.8 $150.47
9/30/20231,260,000 shares $250.03 million +6.8%N/A2.3 $198.44
9/15/20231,180,000 shares $248.94 million +14.6%N/A2.3 $210.97
8/31/20231,030,000 shares $233.75 million -2.8%N/A1.9 $226.94
8/15/20231,060,000 shares $261.25 million +41.2%N/A2.2 $246.46
7/31/2023750,900 shares $216.07 million -12.1%N/A1.7 $287.75
7/15/2023854,400 shares $278.60 million -4.9%N/A2 $326.08
AI Boom Takes a Shocking Turn… (Ad)

AI is Creating Fortunes… (but not where you think!) Bryce Paul and the team at Crypto101 just released a brand-new report…

The #1 AI Coin for 2025 (Click here to access it now)
6/30/2023898,100 shares $291.41 million -32.0%N/A2.2 $324.47
6/15/20231,320,000 shares $402.47 million No ChangeN/A3.1 $304.90
5/31/20231,320,000 shares $385.88 million +11.9%N/A3.6 $292.33
5/15/20231,180,000 shares $349.34 million -5.6%N/A3.3 $296.05
4/30/20231,250,000 shares $334.54 million -10.1%N/A3.4 $267.63
4/15/20231,390,000 shares $363.15 million +10.3%N/A4.2 $261.26
3/31/20231,260,000 shares $294.93 million +26.0%N/A3.9 $234.07
3/15/20231,000,000 shares $242.06 million -2.9%N/A3.3 $242.06
2/28/20231,030,000 shares $267.73 million -15.6%N/A3.5 $259.93
2/15/20231,220,000 shares $339.17 million +11.9%N/A4.1 $278.01
1/31/20231,090,000 shares $275.84 million +5.8%N/A3.8 $253.06
1/15/20231,030,000 shares $264.64 million +11.2%N/A3.4 $256.93
12/30/2022926,200 shares $233.29 million +4.3%N/A2.9 $251.88
12/15/2022888,300 shares $227.11 million -21.4%N/A2.8 $255.67
11/30/20221,130,000 shares $272.97 million -7.4%N/A3.5 $241.57
11/15/20221,220,000 shares $260.47 million +0.8%N/A3.9 $213.50
10/31/20221,210,000 shares $235.89 million -11.0%N/A3.9 $194.95
10/15/20221,360,000 shares $223.07 million +8.8%N/A4.7 $164.02
9/30/20221,250,000 shares $221.71 million +9.7%N/A4.7 $177.37
9/15/20221,140,000 shares $226.23 million -14.9%N/A4.3 $198.45
8/31/20221,340,000 shares $256.60 million -6.9%N/A5 $191.49
8/15/20221,440,000 shares $322.46 million +2.1%N/A5.6 $223.93
7/31/20221,410,000 shares $294.68 million +1.4%5.2%4.8 $208.99
7/15/20221,390,000 shares $277.83 million +0.7%5.1%4.6 $199.88
6/30/20221,380,000 shares $252.08 million -3.5%5.1%4.4 $182.67
6/15/20221,430,000 shares $239.57 million -2.7%5.3%4.5 $167.53
5/31/20221,470,000 shares $259.94 million +7.3%5.4%5 $176.83
5/15/20221,370,000 shares $226.19 million +6.2%5.1%4.6 $165.10
4/30/20221,290,000 shares $265.43 million -3.7%4.8%4.5 $205.76
4/15/20221,340,000 shares $329.69 million +6.4%5.0%5.1 $246.04
3/31/20221,260,000 shares $323.43 million +9.6%4.7%4.8 $256.69
3/15/20221,150,000 shares $238.52 million +0.9%4.3%4.5 $207.41
2/28/20221,140,000 shares $278.23 million -1.7%4.2%4.2 $244.06
2/15/20221,160,000 shares $271.17 million +1.8%4.3%4.2 $233.77
1/31/20221,140,000 shares $252.27 million +20.9%4.3%4.5 $221.29
1/15/2022943,200 shares $224.05 million +11.9%3.5%4 $237.54
12/31/2021842,900 shares $193.92 million +10.9%3.2%3.9 $230.06
12/15/2021759,800 shares $164.42 million +38.2%2.8%3.7 $216.40
11/30/2021549,800 shares $122.75 million -12.5%2.1%2.7 $223.27
11/15/2021628,100 shares $174.39 million -20.2%2.4%3.3 $277.65
10/29/2021786,800 shares $212.11 million +1.8%2.9%3.8 $269.58
10/15/2021772,800 shares $189.48 million -5.1%2.9%3.6 $245.18
9/30/2021814,200 shares $189.61 million -9.3%3.1%3.2 $232.88
9/15/2021898,100 shares $211.79 million -14.5%3.4%3.4 $235.82
8/31/20211,050,000 shares $234.74 million +18.3%3.9%4.1 $223.56
8/13/2021887,300 shares $167.46 million -20.1%3.3%3.3 $188.73
7/30/20211,110,000 shares $203.31 million +28.8%4.2%4 $183.16
7/15/2021861,600 shares $150.11 million +5.7%3.2%3.2 $174.22
6/30/2021815,400 shares $157.58 million -0.5%3.1%3.5 $193.26
6/15/2021819,500 shares $153.59 million +14.6%3.1%3.6 $187.42
AI Boom Takes a Shocking Turn… (Ad)

AI is Creating Fortunes… (but not where you think!) Bryce Paul and the team at Crypto101 just released a brand-new report…

The #1 AI Coin for 2025 (Click here to access it now)
5/28/2021715,100 shares $138.94 million +6.7%2.7%3.2 $194.30
5/14/2021670,100 shares $111.66 million -2.3%N/A2.8 $166.63
4/30/2021686,100 shares $165.13 million -3.8%N/A3 $240.68
4/15/2021713,200 shares $160.23 million -0.5%N/A3.3 $224.67
3/31/2021717,100 shares $140.70 million -10.9%N/A3 $196.20
3/15/2021805,200 shares $175.57 million -1.7%N/A3.2 $218.05
2/26/2021819,300 shares $185.36 million -0.8%N/A3.1 $226.24
2/12/2021826,100 shares $191.80 million +5.9%N/A3.2 $232.18
1/29/2021780,400 shares $159.59 million +4.4%N/A2.8 $204.50
1/15/2021747,800 shares $158.14 million -4.5%N/A2.5 $211.47
12/31/2020782,900 shares $148.30 million +3.8%N/A2.7 $189.43
12/15/2020754,500 shares $146.99 million -5.8%N/A2.6 $194.82
11/30/2020801,000 shares $148.18 million -29.1%N/A2.5 $184.99
11/15/20201,130,000 shares $197.37 million -18.1%N/A3.6 $174.66
10/30/20201,380,000 shares $170.97 million -10.4%N/A4.3 $123.89
10/15/20201,540,000 shares $192.28 million -11.5%N/A5.2 $124.86
9/30/20201,740,000 shares $224.55 million +17.6%N/A5.6 $129.05
9/15/20201,480,000 shares $185.37 million -3.3%N/A4.2 $125.25
8/31/20201,530,000 shares $182.76 million -13.6%N/A4.7 $119.45
8/14/20201,770,000 shares $191.27 million -6.8%N/A5.4 $108.06
7/31/20201,900,000 shares $188.78 million -7.3%N/A5.5 $99.36
7/15/20202,050,000 shares $184.44 million -12.0%N/A5.8 $89.97
6/30/20202,330,000 shares $197.19 million +24.6%N/A5.8 $84.63
6/15/20201,870,000 shares $155.90 million -4.6%N/A4.5 $83.37
5/29/20201,960,000 shares $156.80 million -11.3%N/A4.4 $80.00
5/15/20202,210,000 shares $159.72 million +10.5%N/A4.5 $72.27
4/30/20202,000,000 shares $150.52 million -21.6%N/A4.3 $75.26
4/15/20202,550,000 shares $176.74 million +25.6%N/A5.3 $69.31
3/31/20202,030,000 shares $146.89 million +19.3%9.1%4.6 $72.36

INSP Short Interest - Frequently Asked Questions

What is Inspire Medical Systems' current short interest?

Short interest is the volume of Inspire Medical Systems shares that have been sold short but have not yet been covered or closed out. As of February 28th, investors have sold 3,140,000 shares of INSP short. 11.04% of Inspire Medical Systems' shares are currently sold short. Learn More on Inspire Medical Systems' current short interest.

What is a good short interest ratio for Inspire Medical Systems?

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. INSP shares currently have a short interest ratio of 6.0. Learn More on Inspire Medical Systems's short interest ratio.

Which institutional investors are shorting Inspire Medical Systems?

As of the most recent reporting period, the following institutional investors, funds, and major shareholders have reported short positions of Inspire Medical Systems: Wolverine Trading LLC, Summit Partners Public Asset Management LLC, Millennium Management LLC, Group One Trading LLC, D. E. Shaw & Co. Inc., Cubist Systematic Strategies LLC, Caption Management LLC, Citadel Advisors LLC, Jane Street Group LLC, Tudor Investment Corp ET AL, Berger Financial Group Inc, Two Sigma Securities LLC, Concourse Financial Group Securities Inc., PEAK6 LLC, Walleye Trading LLC, Walleye Capital LLC, JPMorgan Chase & Co., Twin Tree Management LP, and JPMorgan Chase & Co.. These positions are disclosed in Form 13F filings with the Securities and Exchange Commission.

What is a good short interest percentage for Inspire Medical Systems?

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. 11.04% of Inspire Medical Systems' floating shares are currently sold short.

Is Inspire Medical Systems' short interest increasing or decreasing?

Inspire Medical Systems saw a increase in short interest in February. As of February 28th, there was short interest totaling 3,140,000 shares, an increase of 8.3% from the previous total of 2,900,000 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 Inspire Medical Systems' short interest compare to its competitors?

11.04% of Inspire Medical Systems' shares are currently sold short. Here is how the short interest of companies in the industry of "medical equipment" compare to Inspire Medical Systems: Solventum Co. (3.10%), Smith & Nephew plc (0.37%), Penumbra, Inc. (3.72%), Stevanato Group S.p.A. (7.08%), Glaukos Co. (6.86%), Bausch + Lomb Co. (5.17%), Inari Medical, Inc. (4.24%), iRhythm Technologies, Inc. (9.49%), PROCEPT BioRobotics Co. (9.80%), Envista Holdings Co. (5.03%),

Which stocks are the most shorted right now?

As of the most recent reporting period, the following stocks had the largest short interest positions: Invesco QQQ ($23.74 billion), iShares 20+ Year Treasury Bond ETF ($10.75 billion), MicroStrategy Incorporated ($6.56 billion), Apollo Global Management, Inc. ($5.40 billion), Charter Communications, Inc. ($4.57 billion), AppLovin Co. ($4.45 billion), Capital One Financial Co. ($4.33 billion), Super Micro Computer, Inc. ($4.23 billion), Schlumberger Limited ($3.22 billion), and Royal Caribbean Cruises Ltd. ($3.06 billion). View all of the most shorted stocks.

What does it mean to sell short Inspire Medical Systems stock?

Short selling INSP is an investing strategy that aims to generate trading profit from Inspire Medical Systems as its price is falling. INSP shares are trading down $5.62 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 Inspire Medical Systems?

A short squeeze for Inspire Medical Systems 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 INSP, which in turn drives the price of the stock up even further.

How often is Inspire Medical Systems' 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 INSP, twice per month. The most recent reporting period available is February, 28 2025.




This page (NYSE:INSP) was last updated on 3/26/2025 by MarketBeat.com Staff
From Our Partners