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Boston Scientific (BSX) Short Interest Ratio & Short Volume

Boston Scientific logo
$99.23 -0.81 (-0.81%)
Closing price 03:59 PM Eastern
Extended Trading
$99.23 +0.00 (+0.00%)
As of 08:00 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 16.75 million shares, representing 1.14% of the float (the number of shares available for trading by the public). This marks a 6.62% increase in short interest from the previous month. The short interest ratio (days to cover) is 2.0, indicating that it would take 2.0 days of the average trading volume of 6.49 million shares to cover all short positions.

Current Short Interest
16,750,000 shares
Previous Short Interest
15,710,000 shares
Change Vs. Previous Month
+6.62%
Dollar Volume Sold Short
$1.75 billion
Short Interest Ratio
2.0 Days to Cover
Last Record Date
May 15, 2025
Outstanding Shares
1,479,446,000 shares
Short Percent of Float
1.14%
Today's Trading Volume
8,710,207 shares
Average Trading Volume
6,494,865 shares
Today's Volume Vs. Average
134%
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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
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
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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
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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
8/14/202016,470,000 shares $644.97 million +5.2%N/A1.7 $39.16
7/31/202015,660,000 shares $604.01 million +5.2%N/A1.5 $38.57
7/15/202014,890,000 shares $546.46 million -12.8%N/A1.4 $36.70
6/30/202017,070,000 shares $599.33 million -8.4%N/A1.5 $35.11
6/15/202018,640,000 shares $668.62 million +9.3%N/A1.6 $35.87

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 covered or closed out. As of May 15th, traders have sold 16,750,000 shares of BSX short. 1.14% 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: Quaker Wealth Management LLC, Jane Street Group LLC, Goldman Sachs Group Inc., Millennium Management LLC, Cubist Systematic Strategies LLC, Nomura Holdings Inc., Susquehanna International Group LLP, HAP Trading LLC, BNP Paribas Financial Markets, Eisler Capital Management Ltd., PEAK6 LLC, Jane Street Group LLC, Walleye Trading LLC, Walleye Capital LLC, Capital Fund Management S.A., Hsbc Holdings PLC, Simplex Trading LLC, JPMorgan Chase & Co., Citigroup Inc., XY Capital Ltd, Delta Accumulation LLC, Readystate Asset Management LP, Allianz Asset Management GmbH, Portman Square Capital LLP, Caas Capital Management LP, Fulcrum Asset Management LLP, Wealth Enhancement Advisory Services LLC, and IMC Chicago 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. 1.14% 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 May. As of May 15th, there was short interest totaling 16,750,000 shares, an increase of 6.6% from the previous total of 15,710,000 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?

1.14% of Boston Scientific's shares are currently sold short. Here is how the short interest of companies compare to Boston Scientific: Abbott Laboratories (1.29%), Intuitive Surgical, Inc. (1.37%), Stryker Co. (1.68%), Medtronic plc (1.06%), Becton, Dickinson and Company (1.14%), Edwards Lifesciences Co. (1.28%), IDEXX Laboratories, Inc. (3.81%), ResMed Inc. (7.50%), DexCom, Inc. (2.90%), STERIS plc (1.09%),

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 ($29.20 billion), Strategy Incorporated ($10.88 billion), iShares 20+ Year Treasury Bond ETF ($10.04 billion), Capital One Financial Co. ($5.51 billion), Charter Communications, Inc. ($5.00 billion), Super Micro Computer, Inc. ($4.43 billion), Apollo Global Management, Inc. ($4.02 billion), Hims & Hers Health, Inc. ($3.65 billion), VanEck Semiconductor ETF ($3.27 billion), and Coinbase Global, Inc. ($3.10 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 $0.46 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 May, 15 2025.



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This page (NYSE:BSX) was last updated on 6/10/2025 by MarketBeat.com Staff
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