Boston Scientific (BSX) Short Interest Ratio & Short Volume

$107.14 -0.15 (-0.14%)

Closing price 09/5/2025 03:59 PM Eastern

Extended Trading

$106.48 -0.66 (-0.62%)

As of 09/5/2025 07:50 PM Eastern

Boston Scientific Short Interest Data

Boston Scientific (BSX) has a short interest of 18.60 million shares. This marks a 14.32% increase in short interest from the previous month. The short interest ratio (days to cover) is 2.6, indicating that it would take 2.6 days of the average trading volume of 5.79 million shares to cover all short positions.

Current Short Interest: 18,600,000 shares
Previous Short Interest: 16,270,000 shares
Change Vs. Previous Month: +14.32%
Dollar Volume Sold Short: $1.92 billion
Short Interest Ratio: 2.6 Days to Cover
Last Record Date: August 15, 2025

Outstanding Shares: 1,481,752,000 shares
Percentage of Shares Shorted: 1.26%
Today's Trading Volume: 4,062,436 shares
Average Trading Volume: 5,787,252 shares
Today's Volume Vs. Average: 70%

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Short Interest Chart Days to Cover Chart Short Percent of Float Chart

BSX Short Interest Over Time

BSX Days to Cover Over Time

BSX Percentage of Float Shorted Over Time

Boston Scientific Short Interest History

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Report Date	Total Shares Sold Short	Dollar Volume Sold Short	Change from Previous Report	Percentage of Float Shorted	Days to Cover	Price on Report Date
8/15/2025	18,600,000 shares	$1.92 billion	+14.3%	N/A	2.6	$103.15
7/31/2025	16,270,000 shares	$1.71 billion	-16.9%	1.1%	2.2	$104.87
7/15/2025	19,570,000 shares	$2.02 billion	+2.7%	N/A	2.6	$103.43
6/30/2025	19,050,000 shares	$2.05 billion	+8.9%	1.3%	2.4	$107.45
6/15/2025	17,490,000 shares	$1.74 billion	+2.8%	1.2%	2.1	$99.60
5/31/2025	17,020,000 shares	$1.79 billion	+1.6%	1.2%	2.1	$105.08
5/15/2025	16,750,000 shares	$1.75 billion	+6.6%	1.1%	2	$104.63
4/30/2025	15,710,000 shares	$1.62 billion	+8.4%	N/A	1.9	$102.90
4/15/2025	14,490,000 shares	$1.36 billion	+10.6%	1.0%	1.7	$94.19
3/31/2025	13,100,000 shares	$1.32 billion	+3.8%	0.9%	1.6	$100.95
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3/15/2025	12,620,000 shares	$1.23 billion	-1.9%	0.9%	1.9	$97.26
2/28/2025	12,870,000 shares	$1.34 billion	+12.3%	0.9%	2.1	$104.02
2/15/2025	11,460,000 shares	$1.22 billion	+9.7%	0.8%	2	$106.20
1/31/2025	10,450,000 shares	$1.07 billion	-27.4%	N/A	1.9	$102.40
1/15/2025	14,400,000 shares	$1.39 billion	-0.8%	N/A	2.5	$96.87
12/31/2024	14,520,000 shares	$1.30 billion	+17.8%	N/A	2.5	$89.32
12/15/2024	12,330,000 shares	$1.11 billion	+0.7%	N/A	2.1	$90.11
11/30/2024	12,250,000 shares	$1.11 billion	+11.2%	N/A	2.1	$90.66
11/15/2024	11,020,000 shares	$958.46 million	-14.6%	N/A	1.8	$86.98
10/31/2024	12,910,000 shares	$1.08 billion	+14.2%	N/A	2.3	$84.02
10/15/2024	11,310,000 shares	$981.37 million	+3.6%	N/A	2	$86.77
9/30/2024	10,920,000 shares	$915.10 million	-10.5%	N/A	2	$83.80
9/15/2024	12,200,000 shares	$1.02 billion	+10.7%	N/A	2.2	$83.31
8/31/2024	11,020,000 shares	$901.33 million	+2.6%	N/A	2	$81.79
8/15/2024	10,740,000 shares	$833.21 million	-0.6%	N/A	1.9	$77.58
7/31/2024	10,800,000 shares	$797.69 million	-6.3%	N/A	1.8	$73.86
7/15/2024	11,530,000 shares	$899.57 million	+2.5%	N/A	1.9	$78.02
6/30/2024	11,250,000 shares	$866.36 million	-2.5%	N/A	1.9	$77.01
6/15/2024	11,540,000 shares	$885.81 million	-13.8%	N/A	1.9	$76.76
5/31/2024	13,380,000 shares	$1.01 billion	+8.5%	N/A	2.2	$75.59
5/15/2024	12,330,000 shares	$917.97 million	-11.6%	N/A	2	$74.45
4/30/2024	13,940,000 shares	$1.00 billion	+5.9%	N/A	2.2	$71.86
4/15/2024	13,160,000 shares	$887.51 million	+5.9%	N/A	2	$67.44
3/31/2024	12,430,000 shares	$851.33 million	+8.3%	N/A	1.9	$68.49
3/15/2024	11,480,000 shares	$760.32 million	+21.6%	N/A	1.8	$66.23
2/29/2024	9,440,000 shares	$625.02 million	-14.4%	N/A	1.5	$66.21
2/15/2024	11,030,000 shares	$728.97 million	+1.5%	N/A	1.7	$66.09
1/31/2024	10,870,000 shares	$687.64 million	-4.9%	N/A	1.6	$63.26
1/15/2024	11,430,000 shares	$685.11 million	+22.3%	N/A	1.7	$59.94
12/31/2023	9,350,000 shares	$540.52 million	-19.7%	N/A	1.3	$57.81

12/15/2023	11,640,000 shares	$649.63 million	+26.0%	N/A	1.6	$55.81
11/30/2023	9,240,000 shares	$516.42 million	-22.0%	N/A	1.2	$55.89
11/15/2023	11,850,000 shares	$638.12 million	+29.7%	N/A	1.4	$53.85
10/31/2023	9,140,000 shares	$467.88 million	-32.3%	N/A	1.1	$51.19
10/15/2023	13,490,000 shares	$668.02 million	-7.5%	N/A	1.6	$49.52
9/30/2023	14,580,000 shares	$769.82 million	+22.7%	N/A	1.9	$52.80
9/15/2023	11,880,000 shares	$628.45 million	-2.8%	N/A	1.6	$52.90
8/31/2023	12,220,000 shares	$659.15 million	+40.1%	N/A	1.7	$53.94
8/15/2023	8,720,000 shares	$450.65 million	+4.7%	N/A	1.2	$51.68
7/31/2023	8,330,000 shares	$431.91 million	+13.2%	N/A	1.1	$51.85
7/15/2023	7,360,000 shares	$390.30 million	-13.2%	N/A	0.9	$53.03
6/30/2023	8,480,000 shares	$458.51 million	-2.8%	N/A	1	$54.07
6/15/2023	8,720,000 shares	$470.79 million	-29.5%	N/A	1	$53.99
5/31/2023	12,360,000 shares	$636.29 million	-23.0%	N/A	1.3	$51.48
5/15/2023	16,050,000 shares	$861.56 million	-10.7%	N/A	1.8	$53.68
4/30/2023	17,970,000 shares	$936.60 million	+16.4%	N/A	2.1	$52.12
4/15/2023	15,440,000 shares	$799.33 million	+1.9%	N/A	1.9	$51.77
3/31/2023	15,160,000 shares	$758.45 million	+5.9%	N/A	1.9	$50.03
3/15/2023	14,310,000 shares	$686.45 million	+12.8%	N/A	2	$47.97
2/28/2023	12,690,000 shares	$592.88 million	+29.9%	N/A	1.8	$46.72
2/15/2023	9,770,000 shares	$462.02 million	-26.2%	N/A	1.5	$47.29
1/31/2023	13,230,000 shares	$611.89 million	-15.3%	N/A	2	$46.25
1/15/2023	15,610,000 shares	$726.33 million	+10.6%	N/A	2.3	$46.53
12/30/2022	14,110,000 shares	$652.87 million	-1.7%	N/A	2.1	$46.27
12/15/2022	14,350,000 shares	$664.69 million	+8.8%	N/A	2.1	$46.32
11/30/2022	13,190,000 shares	$597.11 million	+0.2%	N/A	1.9	$45.27
11/15/2022	13,170,000 shares	$558.67 million	-5.3%	N/A	1.9	$42.42
10/31/2022	13,910,000 shares	$599.66 million	-8.6%	N/A	2	$43.11
10/15/2022	15,220,000 shares	$608.50 million	-8.8%	N/A	2.2	$39.98
9/30/2022	16,690,000 shares	$646.40 million	+3.7%	N/A	2.5	$38.73
9/15/2022	16,100,000 shares	$679.42 million	+5.9%	N/A	2.4	$42.20
8/31/2022	15,210,000 shares	$613.12 million	-9.8%	N/A	2.1	$40.31
8/15/2022	16,860,000 shares	$710.65 million	+22.6%	N/A	2.2	$42.15
7/31/2022	13,750,000 shares	$564.44 million	-14.3%	N/A	1.7	$41.05
7/15/2022	16,040,000 shares	$602.30 million	-2.4%	N/A	1.9	$37.55
6/30/2022	16,440,000 shares	$612.72 million	-13.6%	N/A	1.9	$37.27
6/15/2022	19,020,000 shares	$685.29 million	+25.3%	1.4%	2.2	$36.03
5/31/2022	15,180,000 shares	$622.53 million	+1.2%	1.1%	1.8	$41.01
5/15/2022	15,000,000 shares	$594.90 million	+21.5%	1.1%	1.7	$39.66
4/30/2022	12,350,000 shares	$520.06 million	+3.2%	0.9%	1.4	$42.11
4/15/2022	11,970,000 shares	$529.67 million	-23.6%	0.9%	1.3	$44.25
3/31/2022	15,670,000 shares	$694.02 million	+13.4%	1.1%	1.7	$44.29
3/15/2022	13,820,000 shares	$589.56 million	-21.5%	1.0%	1.5	$42.66
2/28/2022	17,600,000 shares	$777.39 million	-0.3%	1.3%	1.9	$44.17
2/15/2022	17,650,000 shares	$776.78 million	-3.8%	1.3%	1.9	$44.01
1/31/2022	18,340,000 shares	$786.79 million	+19.1%	1.3%	2	$42.90
1/15/2022	15,400,000 shares	$690.84 million	+1.9%	1.1%	1.9	$44.86
12/31/2021	15,120,000 shares	$642.30 million	+11.5%	1.1%	2	$42.48
12/15/2021	13,560,000 shares	$545.65 million	-7.8%	1.0%	1.8	$40.24
11/30/2021	14,700,000 shares	$559.63 million	-6.4%	1.0%	2.1	$38.07

11/15/2021	15,710,000 shares	$649.45 million	-26.0%	1.1%	2.4	$41.34
10/29/2021	21,220,000 shares	$915.22 million	-6.0%	1.5%	3.3	$43.13
10/15/2021	22,570,000 shares	$979.54 million	-5.1%	1.6%	3.6	$43.40
9/30/2021	23,790,000 shares	$1.03 billion	+15.8%	1.7%	3.7	$43.39
9/15/2021	20,540,000 shares	$924.51 million	+2.7%	1.5%	3.2	$45.01
8/31/2021	20,000,000 shares	$903 million	+19.0%	1.4%	3.2	$45.15
8/13/2021	16,810,000 shares	$745.19 million	+17.9%	1.2%	2.6	$44.33
7/30/2021	14,260,000 shares	$650.26 million	+15.5%	1.0%	2.2	$45.60
7/15/2021	12,350,000 shares	$520.68 million	-2.8%	N/A	1.9	$42.16
6/30/2021	12,710,000 shares	$543.48 million	-5.2%	N/A	1.8	$42.76
6/15/2021	13,400,000 shares	$572.85 million	+17.5%	N/A	1.9	$42.75
5/28/2021	11,400,000 shares	$485.07 million	-2.9%	N/A	1.6	$42.55
5/14/2021	11,740,000 shares	$488.50 million	-29.4%	N/A	1.5	$41.61
4/30/2021	16,620,000 shares	$732.94 million	+13.8%	N/A	2	$44.10
4/15/2021	14,610,000 shares	$579.58 million	-3.2%	N/A	1.7	$39.67
3/31/2021	15,090,000 shares	$587.91 million	-15.1%	N/A	1.6	$38.96
3/15/2021	17,780,000 shares	$690.75 million	-0.2%	N/A	1.8	$38.85
2/26/2021	17,810,000 shares	$706.52 million	-2.3%	N/A	1.5	$39.67
2/12/2021	18,230,000 shares	$708.60 million	+26.8%	N/A	1.5	$38.87
1/29/2021	14,380,000 shares	$522.57 million	-6.6%	N/A	1.1	$36.34
1/15/2021	15,400,000 shares	$556.86 million	+2.2%	N/A	1.1	$36.16
12/31/2020	15,070,000 shares	$535.74 million	-7.8%	N/A	1.1	$35.55
12/15/2020	16,340,000 shares	$546.57 million	+33.7%	N/A	1.2	$33.45
11/30/2020	12,220,000 shares	$410.59 million	-5.8%	N/A	1	$33.60
11/15/2020	12,970,000 shares	$492.60 million	+6.6%	N/A	1.2	$37.98
10/30/2020	12,170,000 shares	$407.70 million	+5.6%	N/A	1.3	$33.50
10/15/2020	11,520,000 shares	$467.94 million	-10.8%	N/A	1.5	$40.62
9/30/2020	12,920,000 shares	$493.67 million	-20.5%	N/A	1.8	$38.21
9/15/2020	16,250,000 shares	$666.58 million	+9.5%	N/A	1.9	$41.02

BSX Short Interest - Frequently Asked Questions

What is Boston Scientific's current short interest?: Short interest is the volume of Boston Scientific shares that have been sold short but have not yet been closed out or covered. As of August 15th, traders have sold 18,600,000 shares of BSX short. Learn More on Boston Scientific's current short interest.
What is a good short interest ratio for Boston Scientific?: 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. BSX shares currently have a short interest ratio of 3.0. Learn More on Boston Scientific's short interest ratio.
Which institutional investors are shorting Boston Scientific?: As of the most recent reporting period, the following institutional investors, funds, and major shareholders have reported short positions of Boston Scientific: Hudson Bay Capital Management LP, Nomura Holdings Inc., LMR Partners LLP, Hudson Bay Capital Management LP, Group One Trading LLC, Cubist Systematic Strategies LLC, BNP Paribas Financial Markets, Balyasny Asset Management L.P., Bank of America Corp DE, Jane Street Group LLC, Caption Management LLC, Volterra Technologies LP, Squarepoint Ops LLC, Qube Research & Technologies Ltd, Maven Securities LTD, Capula Management Ltd, Walleye Capital LLC, Walleye Trading LLC, Lido Advisors LLC, Delta Accumulation LLC, Capital Fund Management S.A., Hsbc Holdings PLC, Eisler Capital Management Ltd., JPMorgan Chase & Co., Citigroup Inc., Credit Industriel ET Commercial, Huntington National Bank, Allianz Asset Management GmbH, Twin Tree Management LP, Credit Industriel ET Commercial, Concurrent Investment Advisors LLC, and Wealth Enhancement Advisory Services LLC. These positions are disclosed in Form 13F filings with the Securities and Exchange Commission.
Is Boston Scientific's short interest increasing or decreasing?: Boston Scientific saw a increase in short interest in August. As of August 15th, there was short interest totaling 18,600,000 shares, an increase of 14.3% from the previous total of 16,270,000 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 Boston Scientific's short interest compare to its competitors?: Here is how the short interest of companies compare to Boston Scientific: Align Technology, Inc. (3.40%), Hologic, Inc. (1.66%), HealthEquity, Inc. (5.91%), Merit Medical Systems, Inc. (5.35%), AMN Healthcare Services Inc (8.60%), Cardinal Health, Inc. (3.20%), DaVita Inc. (9.57%), Ecolab Inc. (1.01%), HCA Healthcare, Inc. (2.48%), Medtronic PLC (1.10%),
Which stocks are the most shorted right now?: As of the most recent reporting period, the following stocks had the largest short interest positions: Lucid Group, Inc. ($8.00 billion), Spotify Technology ($5.48 billion), AppLovin Corporation ($5.11 billion), Reddit Inc. ($5.02 billion), Coinbase Global, Inc. ($3.99 billion), Charter Communications, Inc. ($3.89 billion), Live Nation Entertainment, Inc. ($3.18 billion), Seagate Technology Holdings PLC ($2.59 billion), ResMed Inc. ($2.55 billion), and Rocket Lab Corporation ($2.52 billion). View all of the most shorted stocks.
What does it mean to sell short Boston Scientific stock?: Short selling BSX is an investing strategy that aims to generate trading profit from Boston Scientific as its price is falling. BSX shares are trading down $0.15 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 Boston Scientific?: A short squeeze for Boston Scientific 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 BSX, which in turn drives the price of the stock up even further.
How often is Boston Scientific'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 BSX, twice per month. The most recent reporting period available is August, 15 2025.

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This page (NYSE:BSX) was last updated on 9/6/2025 by MarketBeat.com Staff

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Boston Scientific (BSX) Short Interest Ratio & Short Volume

Boston Scientific Short Interest Data

BSX Short Interest Over Time

BSX Days to Cover Over Time

BSX Percentage of Float Shorted Over Time

Boston Scientific Short Interest History

BSX Short Interest - Frequently Asked Questions

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Boston Scientific (BSX) Short Interest Ratio & Short Volume

Boston Scientific Short Interest Data

BSX Short Interest Over Time

BSX Days to Cover Over Time

BSX Percentage of Float Shorted Over Time

Boston Scientific Short Interest History

BSX Short Interest - Frequently Asked Questions

More Short Interest Resources from MarketBeat

MarketBeat All Access Features

Best-in-Class Portfolio Monitoring

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