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Boston Scientific (BSX) Short Interest Ratio & Short Volume

Boston Scientific logo
$56.12 -0.73 (-1.28%)
As of 03:27 PM Eastern
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Boston Scientific Short Interest Overview

As of April 15, 2026, Boston Scientific (BSX) had a short interest of 25.61 million shares sold short, representing 1.73% of the public float. This marks a 8.86% increase in short interest since the prior report. The short interest ratio (days to cover) is 1.8, meaning it would take 1.8 days of the average trading volume of 16.34 million shares to cover all short positions.

Current Short Interest
25,614,558 shares
Previous Short Interest
23,529,218 shares
Change Vs. Previous Month
8.86%
Dollar Volume Sold Short
$1.65 billion
Short Interest Ratio
1.8 Days to Cover
Last Record Date
April 15, 2026
Outstanding Shares
1,486,175,000 shares
Short Percent of Float
1.73%
Today's Trading Volume
8,152,077 shares
Average Trading Volume
16,343,556 shares
Today's Volume Vs. Average
50%
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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 Tesla Short Interest History & Recent Changes

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Report DateTotal Shares Sold ShortDollar Volume Sold ShortChange from Previous ReportPercentage of Float ShortedDays to CoverPrice on Report Date
4/15/202625,614,558 shares $1.65 billion +8.9%1.7%1.8 $64.61
3/31/202623,529,218 shares $1.47 billion -7.5%1.6%1.43 $62.64
3/13/202625,441,563 shares $1.76 billion -3.1%1.7%1.98 $69.15
2/27/202626,261,043 shares $2.01 billion -1.4%1.8%1.94 $76.68
2/13/202626,641,433 shares $1.99 billion -5.8%1.8%0.95 $74.72
1/30/202628,281,105 shares $2.65 billion +20.8%1.9%1.97 $93.58
1/15/202623,415,429 shares $2.11 billion +17.0%1.6%2.27 $90.00
12/31/202520,010,940 shares $1.91 billion +4.5%1.4%2.37 $95.29
12/15/202519,144,680 shares $1.76 billion +2.2%1.3%1.89 $92.18
11/28/202518,734,072 shares $1.91 billion -11.1%1.3%1.89 $101.95
11/14/202521,076,004 shares $2.17 billion +8.3%1.4%2.73 $102.73
10/31/202519,453,503 shares $1.96 billion -0.9%1.3%2.28 $100.81
10/15/202519,630,000 shares $1.92 billion +1.2%1.3%2.3 $97.77
9/30/202519,400,000 shares $1.89 billion +2.0%N/A2.3 $97.55
9/15/202519,020,000 shares $1.90 billion +0.2%N/A2.4 $99.75
8/31/202518,990,000 shares $2.00 billion +2.1%1.3%2.7 $105.56
8/15/202518,600,000 shares $1.92 billion +14.3%N/A2.6 $103.15
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
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
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

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 April 15th, traders have sold 25,614,558 shares of BSX short. 1.73% 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 1.8. 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: Hsbc Holdings PLC, Tudor Investment Corp ET AL, Millennium Management LLC, Caption Management LLC, Citadel Advisors LLC, Balyasny Asset Management L.P., Squarepoint Ops LLC, Verition Fund Management LLC, Walleye Trading LLC, PEAK6 LLC, Barclays PLC, Marshall Wace LLP, Walleye Capital LLC, Wells Fargo & Company MN, Jane Street Group LLC, XY Capital Ltd, Group One Trading LLC, Simplex Trading LLC, Allianz Asset Management GmbH, JPMorgan Chase & Co., Lido Advisors LLC, Goldman Sachs Group Inc., BNP Paribas Financial Markets, Huntington National Bank, and Jefferies Financial Group Inc.. 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. 1.73% of Boston Scientific's floating shares are currently sold short.

Is Boston Scientific's short interest increasing or decreasing?

Boston Scientific saw a increase in short interest in the month of April. As of April 15th, there was short interest totaling 25,614,558 shares, an increase of 8.9% from the previous total of 23,529,218 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?

1.73% of Boston Scientific's shares are currently sold short. Here is how the short interest of companies compare to Boston Scientific: Align Technology, Inc. (5.37%), HealthEquity, Inc. (4.95%), Merit Medical Systems, Inc. (4.98%), AMN Healthcare Services Inc (6.27%), DaVita Inc. (8.99%), Ecolab Inc. (1.18%), HCA Healthcare, Inc. (1.80%), Integer Holdings Corporation (11.59%), Medtronic PLC (1.21%), Stryker Corporation (1.29%),

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 ($87.50 billion), Invesco QQQ ($42.26 billion), iShares Russell 2000 ETF ($24.79 billion), Salesforce Inc. ($13.16 billion), SPDR S&P Biotech ETF ($10.01 billion), Western Digital Corporation ($9.77 billion), Sandisk Corporation ($8.69 billion), iShares 20+ Year Treasury Bond ETF ($8.06 billion), CoreWeave Inc. ($7.67 billion), and iShares iBoxx $ High Yield Corporate Bond ETF ($7.64 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 up $0.46 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 April, 15 2026.

What do BSX's short interest metrics mean?

Understanding short interest metrics can help you assess how traders are positioning around a stock like BSX:

  • Shares Sold Short: The total number of shares that have been sold by short sellers but have not yet been covered or closed out. A high number may indicate bearish sentiment.
  • Short Float: The percentage of a company’s publicly available shares (or "float") that are sold short. A higher short float suggests a greater portion of the stock is being bet against.
  • Days to Cover (Short Interest Ratio): This estimates how many days it would take short sellers to cover their positions, based on average daily trading volume. Higher values can signal potential for a short squeeze if buying pressure increases.

These metrics are often used by traders to gauge sentiment, volatility risk, and the potential for price movements based on short covering activity.



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This page (NYSE:BSX) was last updated on 5/5/2026 by MarketBeat.com Staff.
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