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Boston Scientific (BSX) Short Interest Ratio & Short Volume

Boston Scientific logo
$103.15 -1.00 (-0.96%)
Closing price 08/15/2025 03:59 PM Eastern
Extended Trading
$103.37 +0.22 (+0.21%)
As of 08/15/2025 07:58 PM 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.
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Boston Scientific Short Interest Data

Boston Scientific (BSX) has a short interest of 16.27 million shares, representing 1.10% of the float (the number of shares available for trading by the public). This marks a -16.86% decrease in short interest from the previous month. The short interest ratio (days to cover) is 2.2, indicating that it would take 2.2 days of the average trading volume of 6.96 million shares to cover all short positions.

Current Short Interest
16,270,000 shares
Previous Short Interest
19,570,000 shares
Change Vs. Previous Month
-16.86%
Dollar Volume Sold Short
$1.71 billion
Short Interest Ratio
2.2 Days to Cover
Last Record Date
July 31, 2025
Outstanding Shares
1,481,752,000 shares
Short Percent of Float
1.10%
Today's Trading Volume
5,342,171 shares
Average Trading Volume
6,961,994 shares
Today's Volume Vs. Average
77%
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Short Interest ChartDays to Cover ChartShort 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

Export to Excel
Report DateTotal Shares Sold ShortDollar Volume Sold ShortChange from Previous ReportPercentage of Float ShortedDays to CoverPrice on Report Date
7/31/202516,270,000 shares $1.71 billion -16.9%1.1%2.2 $104.87
7/15/202519,570,000 shares $2.02 billion +2.7%N/A2.6 $103.43
6/30/202519,050,000 shares $2.05 billion +8.9%1.3%2.4 $107.45
6/15/202517,490,000 shares $1.74 billion +2.8%1.2%2.1 $99.60
5/31/202517,020,000 shares $1.79 billion +1.6%1.2%2.1 $105.08
5/15/202516,750,000 shares $1.75 billion +6.6%1.1%2 $104.63
4/30/202515,710,000 shares $1.62 billion +8.4%N/A1.9 $102.90
4/15/202514,490,000 shares $1.36 billion +10.6%1.0%1.7 $94.19
3/31/202513,100,000 shares $1.32 billion +3.8%0.9%1.6 $100.95
3/15/202512,620,000 shares $1.23 billion -1.9%0.9%1.9 $97.26
2/28/202512,870,000 shares $1.34 billion +12.3%0.9%2.1 $104.02
2/15/202511,460,000 shares $1.22 billion +9.7%0.8%2 $106.20
1/31/202510,450,000 shares $1.07 billion -27.4%N/A1.9 $102.40
1/15/202514,400,000 shares $1.39 billion -0.8%N/A2.5 $96.87
12/31/202414,520,000 shares $1.30 billion +17.8%N/A2.5 $89.32
12/15/202412,330,000 shares $1.11 billion +0.7%N/A2.1 $90.11
11/30/202412,250,000 shares $1.11 billion +11.2%N/A2.1 $90.66
11/15/202411,020,000 shares $958.46 million -14.6%N/A1.8 $86.98
10/31/202412,910,000 shares $1.08 billion +14.2%N/A2.3 $84.02
10/15/202411,310,000 shares $981.37 million +3.6%N/A2 $86.77
9/30/202410,920,000 shares $915.10 million -10.5%N/A2 $83.80
9/15/202412,200,000 shares $1.02 billion +10.7%N/A2.2 $83.31
8/31/202411,020,000 shares $901.33 million +2.6%N/A2 $81.79
8/15/202410,740,000 shares $833.21 million -0.6%N/A1.9 $77.58
7/31/202410,800,000 shares $797.69 million -6.3%N/A1.8 $73.86
7/15/202411,530,000 shares $899.57 million +2.5%N/A1.9 $78.02
6/30/202411,250,000 shares $866.36 million -2.5%N/A1.9 $77.01
6/15/202411,540,000 shares $885.81 million -13.8%N/A1.9 $76.76
5/31/202413,380,000 shares $1.01 billion +8.5%N/A2.2 $75.59
5/15/202412,330,000 shares $917.97 million -11.6%N/A2 $74.45
4/30/202413,940,000 shares $1.00 billion +5.9%N/A2.2 $71.86
4/15/202413,160,000 shares $887.51 million +5.9%N/A2 $67.44
3/31/202412,430,000 shares $851.33 million +8.3%N/A1.9 $68.49
3/15/202411,480,000 shares $760.32 million +21.6%N/A1.8 $66.23
2/29/20249,440,000 shares $625.02 million -14.4%N/A1.5 $66.21
2/15/202411,030,000 shares $728.97 million +1.5%N/A1.7 $66.09
1/31/202410,870,000 shares $687.64 million -4.9%N/A1.6 $63.26
1/15/202411,430,000 shares $685.11 million +22.3%N/A1.7 $59.94
12/31/20239,350,000 shares $540.52 million -19.7%N/A1.3 $57.81
12/15/202311,640,000 shares $649.63 million +26.0%N/A1.6 $55.81
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11/30/20239,240,000 shares $516.42 million -22.0%N/A1.2 $55.89
11/15/202311,850,000 shares $638.12 million +29.7%N/A1.4 $53.85
10/31/20239,140,000 shares $467.88 million -32.3%N/A1.1 $51.19
10/15/202313,490,000 shares $668.02 million -7.5%N/A1.6 $49.52
9/30/202314,580,000 shares $769.82 million +22.7%N/A1.9 $52.80
9/15/202311,880,000 shares $628.45 million -2.8%N/A1.6 $52.90
8/31/202312,220,000 shares $659.15 million +40.1%N/A1.7 $53.94
8/15/20238,720,000 shares $450.65 million +4.7%N/A1.2 $51.68
7/31/20238,330,000 shares $431.91 million +13.2%N/A1.1 $51.85
7/15/20237,360,000 shares $390.30 million -13.2%N/A0.9 $53.03
6/30/20238,480,000 shares $458.51 million -2.8%N/A1 $54.07
6/15/20238,720,000 shares $470.79 million -29.5%N/A1 $53.99
5/31/202312,360,000 shares $636.29 million -23.0%N/A1.3 $51.48
5/15/202316,050,000 shares $861.56 million -10.7%N/A1.8 $53.68
4/30/202317,970,000 shares $936.60 million +16.4%N/A2.1 $52.12
4/15/202315,440,000 shares $799.33 million +1.9%N/A1.9 $51.77
3/31/202315,160,000 shares $758.45 million +5.9%N/A1.9 $50.03
3/15/202314,310,000 shares $686.45 million +12.8%N/A2 $47.97
2/28/202312,690,000 shares $592.88 million +29.9%N/A1.8 $46.72
2/15/20239,770,000 shares $462.02 million -26.2%N/A1.5 $47.29
1/31/202313,230,000 shares $611.89 million -15.3%N/A2 $46.25
1/15/202315,610,000 shares $726.33 million +10.6%N/A2.3 $46.53
12/30/202214,110,000 shares $652.87 million -1.7%N/A2.1 $46.27
12/15/202214,350,000 shares $664.69 million +8.8%N/A2.1 $46.32
11/30/202213,190,000 shares $597.11 million +0.2%N/A1.9 $45.27
11/15/202213,170,000 shares $558.67 million -5.3%N/A1.9 $42.42
10/31/202213,910,000 shares $599.66 million -8.6%N/A2 $43.11
10/15/202215,220,000 shares $608.50 million -8.8%N/A2.2 $39.98
9/30/202216,690,000 shares $646.40 million +3.7%N/A2.5 $38.73
9/15/202216,100,000 shares $679.42 million +5.9%N/A2.4 $42.20
8/31/202215,210,000 shares $613.12 million -9.8%N/A2.1 $40.31
8/15/202216,860,000 shares $710.65 million +22.6%N/A2.2 $42.15
7/31/202213,750,000 shares $564.44 million -14.3%N/A1.7 $41.05
7/15/202216,040,000 shares $602.30 million -2.4%N/A1.9 $37.55
6/30/202216,440,000 shares $612.72 million -13.6%N/A1.9 $37.27
6/15/202219,020,000 shares $685.29 million +25.3%1.4%2.2 $36.03
5/31/202215,180,000 shares $622.53 million +1.2%1.1%1.8 $41.01
5/15/202215,000,000 shares $594.90 million +21.5%1.1%1.7 $39.66
4/30/202212,350,000 shares $520.06 million +3.2%0.9%1.4 $42.11
4/15/202211,970,000 shares $529.67 million -23.6%0.9%1.3 $44.25
3/31/202215,670,000 shares $694.02 million +13.4%1.1%1.7 $44.29
3/15/202213,820,000 shares $589.56 million -21.5%1.0%1.5 $42.66
2/28/202217,600,000 shares $777.39 million -0.3%1.3%1.9 $44.17
2/15/202217,650,000 shares $776.78 million -3.8%1.3%1.9 $44.01
1/31/202218,340,000 shares $786.79 million +19.1%1.3%2 $42.90
1/15/202215,400,000 shares $690.84 million +1.9%1.1%1.9 $44.86
12/31/202115,120,000 shares $642.30 million +11.5%1.1%2 $42.48
12/15/202113,560,000 shares $545.65 million -7.8%1.0%1.8 $40.24
11/30/202114,700,000 shares $559.63 million -6.4%1.0%2.1 $38.07
11/15/202115,710,000 shares $649.45 million -26.0%1.1%2.4 $41.34
Altucher: It Looks Like My Trump prediction is coming true (Ad)

New Hampshire just launched a Strategic Crypto Reserve — and James Altucher says it’s the first sign that “Trump’s Great Gain” has officially begun. Altucher believes select cryptos could turn $900 into $108,000 over the next 12 months — and he’s laying out the full gameplan in a new presentation.

See Altucher’s Trump crypto prediction here
10/29/202121,220,000 shares $915.22 million -6.0%1.5%3.3 $43.13
10/15/202122,570,000 shares $979.54 million -5.1%1.6%3.6 $43.40
9/30/202123,790,000 shares $1.03 billion +15.8%1.7%3.7 $43.39
9/15/202120,540,000 shares $924.51 million +2.7%1.5%3.2 $45.01
8/31/202120,000,000 shares $903 million +19.0%1.4%3.2 $45.15
8/13/202116,810,000 shares $745.19 million +17.9%1.2%2.6 $44.33
7/30/202114,260,000 shares $650.26 million +15.5%1.0%2.2 $45.60
7/15/202112,350,000 shares $520.68 million -2.8%N/A1.9 $42.16
6/30/202112,710,000 shares $543.48 million -5.2%N/A1.8 $42.76
6/15/202113,400,000 shares $572.85 million +17.5%N/A1.9 $42.75
5/28/202111,400,000 shares $485.07 million -2.9%N/A1.6 $42.55
5/14/202111,740,000 shares $488.50 million -29.4%N/A1.5 $41.61
4/30/202116,620,000 shares $732.94 million +13.8%N/A2 $44.10
4/15/202114,610,000 shares $579.58 million -3.2%N/A1.7 $39.67
3/31/202115,090,000 shares $587.91 million -15.1%N/A1.6 $38.96
3/15/202117,780,000 shares $690.75 million -0.2%N/A1.8 $38.85
2/26/202117,810,000 shares $706.52 million -2.3%N/A1.5 $39.67
2/12/202118,230,000 shares $708.60 million +26.8%N/A1.5 $38.87
1/29/202114,380,000 shares $522.57 million -6.6%N/A1.1 $36.34
1/15/202115,400,000 shares $556.86 million +2.2%N/A1.1 $36.16
12/31/202015,070,000 shares $535.74 million -7.8%N/A1.1 $35.55
12/15/202016,340,000 shares $546.57 million +33.7%N/A1.2 $33.45
11/30/202012,220,000 shares $410.59 million -5.8%N/A1 $33.60
11/15/202012,970,000 shares $492.60 million +6.6%N/A1.2 $37.98
10/30/202012,170,000 shares $407.70 million +5.6%N/A1.3 $33.50
10/15/202011,520,000 shares $467.94 million -10.8%N/A1.5 $40.62
9/30/202012,920,000 shares $493.67 million -20.5%N/A1.8 $38.21
9/15/202016,250,000 shares $666.58 million +9.5%N/A1.9 $41.02
8/31/202014,840,000 shares $608.74 million -9.9%N/A1.6 $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 July 31st, investors have sold 16,270,000 shares of BSX short. 1.10% of Boston Scientific's shares are currently sold 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 2.0. 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: 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, Wealth Enhancement Advisory Services LLC, Quaker Wealth Management LLC, and Jane Street Group LLC. These positions are disclosed in Form 13F filings with the Securities and Exchange Commission.

What is a good short interest percentage for Boston Scientific?

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. 1.10% of Boston Scientific's floating shares are currently sold short.

Is Boston Scientific's short interest increasing or decreasing?

Boston Scientific saw a decrease in short interest during the month of July. As of July 31st, there was short interest totaling 16,270,000 shares, a decrease of 16.9% from the previous total of 19,570,000 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?

1.10% of Boston Scientific's shares are currently sold short. Here is how the short interest of companies compare to Boston Scientific: Align Technology, Inc. (4.04%), Hologic, Inc. (2.00%), HealthEquity, Inc. (5.64%), Merit Medical Systems, Inc. (5.86%), AMN Healthcare Services Inc (10.06%), DaVita Inc. (8.98%), Ecolab Inc. (0.99%), HCA Healthcare, Inc. (2.44%), Integer Holdings Corporation (6.80%), Medtronic PLC (0.91%),

Which stocks are the most shorted right now?

As of the most recent reporting period, the following stocks had the largest short interest positions: SPDR S&P 500 ETF Trust ($70.87 billion), Invesco QQQ ($30.12 billion), iShares Russell 2000 ETF ($19.85 billion), iShares 20+ Year Treasury Bond ETF ($10.34 billion), MicroStrategy Incorporated ($8.98 billion), iShares iBoxx $ Investment Grade Corporate Bond ETF ($7.61 billion), SPDR S&P Biotech ETF ($6.81 billion), Invesco S&P 500 Equal Weight ETF ($6.14 billion), Palo Alto Networks, Inc. ($5.97 billion), and Super Micro Computer, Inc. ($5.28 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 $1.00 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 July, 31 2025.



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This page (NYSE:BSX) was last updated on 8/16/2025 by MarketBeat.com Staff
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