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Alcon (ALC) Short Interest Ratio & Short Volume

Alcon logo
$63.09 -1.24 (-1.92%)
Closing price 03:59 PM Eastern
Extended Trading
$62.95 -0.14 (-0.22%)
As of 06:21 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 Massive. Learn more.
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Alcon Short Interest Overview

As of September 15, 2026, Alcon (ALC) had a short interest of 17.49 million shares sold short, representing 3.59% of the public float. This marks a 20.05% increase in short interest since the prior report. The short interest ratio (days to cover) is 11.3, meaning it would take 11.3 days of the average trading volume of 1.86 million shares to cover all short positions.

Current Short Interest
17,487,148 shares
Previous Short Interest
14,566,618 shares
Change Vs. Previous Month
20.05%
Dollar Volume Sold Short
$1.18 billion
Short Interest Ratio
11.3 Days to Cover
Last Record Date
September 15, 2026
Outstanding Shares
494,616,000 shares
Short Percent of Float
3.59%
Today's Trading Volume
2,390,981 shares
Average Trading Volume
1,858,262 shares
Today's Volume Vs. Average
129%
Short Selling Alcon?
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Short Interest ChartDays to Cover ChartShort Percent of Float Chart

ALC Short Interest Over Time

ALC Days to Cover Over Time

ALC Percentage of Float Shorted Over Time

Alcon 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
9/15/202617,487,148 shares $1.18 billion +20.1%3.6%11.25 $67.73
8/31/202614,566,618 shares $1.05 billion +22.8%3.0%12.57 $72.14
8/14/202611,865,695 shares $881.32 million -13.1%2.4%5.35 $74.28
7/31/202613,658,171 shares $941.31 million +5.0%2.8%6.06 $68.92
7/15/202613,005,560 shares $890.74 million +25.2%2.7%5.36 $68.49
6/30/202610,385,331 shares $697.12 million +20.5%2.1%5.46 $67.13
6/15/20268,622,220 shares $570.95 million +52.9%1.8%4.98 $66.22
5/29/20265,637,580 shares $373.50 million -5.7%1.1%2.14 $66.25
5/15/20265,977,239 shares $380.52 million +11.4%1.2%2.04 $63.66
4/30/20265,367,916 shares $401.83 million +4.3%1.1%3.83 $74.86
4/15/20265,146,734 shares $415.66 million +5.1%1.1%3.64 $80.76
3/31/20264,896,217 shares $368.79 million +1.6%1.0%3.31 $75.32
3/13/20264,820,959 shares $372.72 million -9.0%1.0%3.21 $77.31
2/27/20265,297,253 shares $461.59 million -17.8%1.1%2.46 $87.14
2/13/20266,444,577 shares $510.78 million -14.9%1.3%2.94 $79.26
1/30/20267,576,851 shares $613.88 million +12.9%1.5%5.62 $81.02
1/15/20266,710,711 shares $534.74 million -3.5%1.4%4.85 $79.69
12/31/20256,950,885 shares $547.38 million +6.6%N/A7.35 $78.75
12/15/20256,523,852 shares $516.58 million +5.8%1.3%4.19 $79.18
11/28/20256,164,426 shares $488.90 million +15.3%1.2%3.28 $79.31
11/14/20255,386,672 shares $417.75 million -20.8%1.1%1.81 $77.55
10/31/20256,801,187 shares $502.90 million +13.4%1.4%4.05 $73.94
10/15/20256,000,000 shares $445.47 million +10.9%1.2%2.8 $74.25
9/30/20255,410,000 shares $403.05 million -14.3%1.1%2.7 $74.50
9/15/20256,310,000 shares $488.33 million +16.9%1.3%3.3 $77.39
8/31/20255,400,000 shares $431.01 million +8.0%1.1%2.8 $79.82
8/15/20255,000,000 shares $439.30 million -29.0%1.0%2.7 $87.86
7/31/20257,040,000 shares $615.85 million +2.2%1.4%4.2 $87.48
7/15/20256,890,000 shares $592.79 million +11.9%1.4%4.3 $86.04
6/30/20256,160,000 shares $543.93 million +17.8%1.3%3.6 $88.30
6/15/20255,230,000 shares $450.79 million +10.6%1.1%3 $86.19
5/31/20254,730,000 shares $406.07 million -5.8%1.0%2.8 $85.85
5/15/20255,020,000 shares $440.71 million +22.4%1.0%2.9 $87.79
4/30/20254,100,000 shares $400.28 million -5.3%0.8%2.5 $97.63
4/15/20254,330,000 shares $396.19 million +56.3%0.9%2.6 $91.50
3/31/20252,770,000 shares $262.89 million +33.8%0.6%1.7 $94.91
3/15/20252,070,000 shares $184.24 million -40.9%0.4%1.6 $89.00
2/28/20253,500,000 shares $323.91 million +12.2%0.7%2.8 $92.55
2/15/20253,120,000 shares $280.83 million -2.8%0.6%2.8 $90.01
1/31/20253,210,000 shares $292.64 million -1.5%0.7%3 $91.17
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1/15/20253,260,000 shares $271.33 million +6.2%0.7%3.6 $83.23
12/31/20243,070,000 shares $260.61 million -3.8%0.6%3.7 $84.89
12/15/20243,190,000 shares $268.50 million +15.6%0.7%4 $84.17
11/30/20242,760,000 shares $245.23 million -11.8%0.6%3.5 $88.85
11/15/20243,130,000 shares $266.46 million -1.0%0.6%4 $85.13
10/31/20243,160,000 shares $290.66 million -7.9%0.7%4.5 $91.98
10/15/20243,430,000 shares $331.44 million +11.0%0.7%4.7 $96.63
9/30/20243,090,000 shares $309.15 million -5.2%0.6%3.8 $100.05
9/15/20243,260,000 shares $321.11 million +9.0%0.7%4 $98.50
8/31/20242,990,000 shares $292.06 million +6.4%0.6%3.7 $97.68
8/15/20242,810,000 shares $263.77 million -6.6%0.6%3.4 $93.87
7/31/20243,010,000 shares $282.94 million -20.0%0.6%3.5 $94.00
7/15/20243,760,000 shares $338.25 million No Change0.8%4.6 $89.96
6/30/20243,760,000 shares $334.94 million -8.7%0.8%4.6 $89.08
6/15/20244,120,000 shares $373.60 million +3.0%0.9%5 $90.68
5/31/20244,000,000 shares $356.52 million +0.5%0.8%4.6 $89.13
5/15/20243,980,000 shares $358.04 million +22.1%0.8%4.3 $89.96
4/30/20243,260,000 shares $252.88 million -2.1%0.7%3.6 $77.57
4/15/20243,330,000 shares $270.03 million -22.9%0.7%3.6 $81.09
3/31/20244,320,000 shares $359.81 million +9.1%0.9%4.6 $83.29
3/15/20243,960,000 shares $336.52 million -11.6%0.8%4.5 $84.98
2/29/20244,480,000 shares $378.78 million +10.9%0.9%5.4 $84.55
2/15/20244,040,000 shares $314.72 million -10.8%0.8%5 $77.90
1/31/20244,530,000 shares $340.25 million +19.2%0.9%5.2 $75.11
1/15/20243,800,000 shares $304.19 million -10.2%0.8%4.5 $80.05
12/31/20234,230,000 shares $330.45 million +9.6%0.9%5.2 $78.12
12/15/20233,860,000 shares $292.28 million +8.7%0.8%4.6 $75.72
11/30/20233,550,000 shares $268.49 million +26.3%0.7%4.3 $75.63
11/15/20232,810,000 shares $198.25 million +19.1%0.6%3.6 $70.55
10/31/20232,360,000 shares $168.32 million -18.6%0.5%3.2 $71.32
10/15/20232,900,000 shares $218.08 million -2.7%0.6%4.1 $75.20
9/30/20232,980,000 shares $229.64 million +11.2%0.6%4.5 $77.06
9/15/20232,680,000 shares $219.55 million -5.0%0.6%4.2 $81.92
8/31/20232,820,000 shares $234.03 million -33.8%0.6%4.4 $82.99
8/15/20234,260,000 shares $341.48 million +21.7%0.9%6.2 $80.16
7/31/20233,500,000 shares $297.27 million -9.3%0.7%4.6 $84.94
7/15/20233,860,000 shares $327.44 million +11.6%0.8%4.8 $84.83
6/30/20233,460,000 shares $284.10 million -11.7%0.7%3.8 $82.11
6/15/20233,920,000 shares $317.09 million -13.3%0.8%3.6 $80.89
5/31/20234,520,000 shares $349.80 million -19.6%0.9%3.7 $77.39
5/15/20235,620,000 shares $447.58 million -26.3%1.2%4.4 $79.64
4/30/20237,630,000 shares $553.02 million +4.5%1.6%6.6 $72.48
4/15/20237,300,000 shares $524.51 million +18.1%1.5%6.2 $71.85
3/31/20236,180,000 shares $435.94 million -1.0%1.3%5.5 $70.54
3/15/20236,240,000 shares $406.79 million +9.1%1.3%6.6 $65.19
2/28/20235,720,000 shares $390.33 million -5.9%1.2%6.8 $68.24
2/15/20236,080,000 shares $458.55 million +1.8%1.3%7.6 $75.42
1/31/20235,970,000 shares $449.00 million +3.5%1.2%6.6 $75.21
1/15/20235,770,000 shares $427.21 million +6.7%1.2%6.2 $74.04
12/30/20225,410,000 shares $370.86 million -7.2%1.1%5.7 $68.55
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12/15/20225,830,000 shares $401.57 million +3.7%1.2%5.6 $68.88
11/30/20225,620,000 shares $387.16 million +4.7%1.2%5.5 $68.89
11/15/20225,370,000 shares $340.30 million -2.0%1.1%5.3 $63.37
10/31/20225,480,000 shares $332.53 million +17.9%1.1%5.7 $60.68
10/15/20224,650,000 shares $267.75 million +4.0%1.0%5.1 $57.58
9/30/20224,470,000 shares $260.06 million -8.8%0.9%5.3 $58.18
9/15/20224,900,000 shares $333.35 million +5.8%1.0%6.5 $68.03
8/31/20224,630,000 shares $304.10 million +4.3%1.0%6.1 $65.68
8/15/20224,440,000 shares $309.02 million -8.6%0.9%5.7 $69.60
7/31/20224,860,000 shares $379.52 million -0.8%1.0%5.8 $78.09
7/15/20224,900,000 shares $349.13 million -17.4%1.0%5.5 $71.25
6/30/20225,930,000 shares $414.45 million -4.1%1.2%6.3 $69.89
6/15/20226,180,000 shares $410.91 million -6.1%1.3%6.5 $66.49
5/31/20226,580,000 shares $491.72 million -1.4%1.3%7.2 $74.73
5/15/20226,670,000 shares $471.24 million -23.6%1.4%7.4 $70.65
4/30/20228,730,000 shares $621.66 million +14.1%1.8%10.4 $71.21
4/15/20227,650,000 shares $588.29 million -3.4%1.6%9.4 $76.90
3/31/20227,920,000 shares $628.29 million +4.2%1.6%9.8 $79.33
3/15/20227,600,000 shares $551.76 million -6.3%N/A9.7 $72.60
2/28/20228,110,000 shares $624.39 million -0.5%1.7%10.2 $76.99
2/15/20228,150,000 shares $642.46 million -0.7%1.7%10.4 $78.83
1/31/20228,210,000 shares $630.36 million +19.0%1.6%10.8 $76.78
1/15/20226,900,000 shares $542.27 million -9.7%1.4%9.7 $78.59
12/31/20217,640,000 shares $665.60 million +10.7%1.5%11.3 $87.12
12/15/20216,900,000 shares $585.26 million -1.7%1.4%10.5 $84.82
11/30/20217,020,000 shares $550.37 million +1.2%1.4%11 $78.40
11/15/20216,940,000 shares $566.58 million -1.1%1.4%10.6 $81.64
10/29/20217,020,000 shares $585.19 million -4.9%1.4%9.1 $83.36
10/15/20217,380,000 shares $575.79 million -0.9%1.5%9.6 $78.02

ALC Short Interest - Frequently Asked Questions

Short interest is the volume of Alcon shares that have been sold short but have not yet been covered or closed out. As of September 15th, investors have sold 17,487,148 shares of ALC short. 3.59% of Alcon's shares are currently sold short. Learn More on Alcon's current short interest.

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. ALC shares currently have a short interest ratio of 11.3. Learn More on Alcon's short interest ratio.

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. 3.59% of Alcon's floating shares are currently sold short.

Alcon saw a increase in short interest in the month of September. As of September 15th, there was short interest totaling 17,487,148 shares, an increase of 20.0% from the previous total of 14,566,618 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.

3.59% of Alcon's shares are currently sold short. Here is how the short interest of companies in the industry of "healthcare equipment & supplies" compare to Alcon: The Cooper Companies, Inc. (5.38%), DexCom, Inc. (4.59%), Medline (3.17%), West Pharmaceutical Services, Inc. (3.40%), Solventum Corporation (2.86%), Align Technology, Inc. (5.49%), Bausch + Lomb Corporation (0.90%), Merit Medical Systems, Inc. (6.64%), ICU Medical, Inc. (6.19%), Envista Holdings Corporation (6.42%),

As of the most recent reporting period, the following stocks had the largest short interest positions: SPDR S&P 500 ETF Trust ($75.21 billion), Invesco QQQ ($46.31 billion), iShares Russell 2000 ETF ($27.98 billion), SPDR S&P Biotech ETF ($11.59 billion), Nebius Group N.V. ($9.70 billion), Canadian Natural Resources Limited ($9.42 billion), iShares 20+ Year Treasury Bond ETF ($8.70 billion), iShares iBoxx $ High Yield Corporate Bond ETF ($8.53 billion), iShares iBoxx $ Investment Grade Corporate Bond ETF ($7.79 billion), and Financial Select Sector SPDR Fund ($7.74 billion). View all of the most shorted stocks.

Short selling ALC is an investing strategy that aims to generate trading profit from Alcon as its price is falling. ALC shares are trading down $1.01 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.

A short squeeze for Alcon occurs when it has a large amount of short interest and its stock increases in price. This forces short sellers to cover their short interest positions by buying actual shares of ALC, which in turn drives the price of the stock up even further.

Short interest is typically published by a stock exchange once per month. However, NASDAQ publishes a report for U.S. stocks, including ALC, twice per month. The most recent reporting period available is September, 15 2026.

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

  • 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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Short Interest Tools

Short interest data for NYSE:ALC is sourced from the Financial Industry Regulatory Authority (FINRA), with the most recent report published on 9/24/2026. FINRA publishes updated short interest twice a month.
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