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Arthur J. Gallagher & Co. (AJG) Short Interest Ratio & Short Volume

Arthur J. Gallagher & Co. logo
$233.98 +1.28 (+0.55%)
As of 11:36 AM Eastern
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Arthur J. Gallagher & Co. Short Interest Overview

As of September 30, 2026, Arthur J. Gallagher & Co. (AJG) had a short interest of 8.23 million shares sold short, representing 3.26% of the public float. This marks a 29.22% increase in short interest since the prior report. The short interest ratio (days to cover) is 5.5, meaning it would take 5.5 days of the average trading volume of 1.89 million shares to cover all short positions.

Current Short Interest
8,234,507 shares
Previous Short Interest
6,372,633 shares
Change Vs. Previous Month
29.22%
Dollar Volume Sold Short
$1.88 billion
Short Interest Ratio
5.5 Days to Cover
Last Record Date
September 30, 2026
Outstanding Shares
256,300,000 shares
Short Percent of Float
3.26%
Today's Trading Volume
102,050 shares
Average Trading Volume
1,892,597 shares
Today's Volume Vs. Average
5%
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Short Interest ChartDays to Cover ChartShort Percent of Float Chart

AJG Short Interest Over Time

AJG Days to Cover Over Time

AJG Percentage of Float Shorted Over Time

Arthur J. Gallagher & Co. 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
9/30/20268,234,507 shares $1.88 billion +29.2%3.3%5.5 $228.62
9/15/20266,372,633 shares $1.58 billion -4.8%2.5%4.51 $248.54
8/31/20266,692,130 shares $1.76 billion +14.5%2.6%5.07 $262.39
8/14/20265,846,996 shares $1.47 billion -6.3%2.3%4.61 $251.07
7/31/20266,242,351 shares $1.56 billion -21.9%2.5%4.55 $249.35
7/15/20267,990,928 shares $1.98 billion +17.2%3.2%4.3 $247.51
6/30/20266,819,347 shares $1.57 billion -0.8%2.7%3.36 $229.88
6/15/20266,873,982 shares $1.48 billion +35.9%2.7%3.82 $215.56
5/29/20265,058,267 shares $1.02 billion -6.3%2.0%3.16 $201.23
5/15/20265,397,314 shares $1.08 billion -9.6%2.1%2.5 $199.81
4/30/20265,970,889 shares $1.23 billion -7.1%2.4%3.88 $206.19
4/15/20266,427,629 shares $1.44 billion +10.2%2.5%3.2 $223.28
3/31/20265,834,419 shares $1.26 billion +16.4%2.3%2.64 $216.37
3/13/20265,012,377 shares $1.04 billion -8.4%2.0%2.13 $207.86
2/27/20265,469,030 shares $1.25 billion +10.5%2.2%1.99 $227.86
2/13/20264,948,436 shares $1.03 billion -13.5%2.0%1.43 $208.22
1/30/20265,722,133 shares $1.43 billion +7.3%2.3%2.51 $249.40
1/15/20265,332,766 shares $1.36 billion +8.3%2.1%2.91 $255.92
12/31/20254,926,285 shares $1.28 billion +26.4%1.9%3.28 $259.09
12/15/20253,898,403 shares $999.16 million -8.6%1.5%2.28 $256.30
11/28/20254,263,068 shares $1.06 billion +4.3%1.7%2.68 $247.69
11/14/20254,086,481 shares $1.06 billion +8.5%1.6%2.27 $258.53
10/31/20253,767,919 shares $941.32 million -1.2%1.5%1.81 $249.83
10/15/20253,810,000 shares $1.13 billion -9.1%1.5%2.5 $296.67
9/30/20254,190,000 shares $1.30 billion +21.5%N/A3 $309.73
9/15/20253,450,000 shares $997.55 million -7.0%N/A2.3 $289.14
8/31/20253,710,000 shares $1.12 billion No Change1.5%2.5 $302.75
8/15/20253,710,000 shares $1.09 billion +51.4%N/A2.5 $292.62
7/31/20252,450,000 shares $704.33 million -15.2%1.0%1.8 $287.48
7/15/20252,890,000 shares $890.31 million +1.8%N/A2.2 $308.07
6/30/20252,840,000 shares $909.45 million -12.9%1.1%2 $320.23
6/15/20253,260,000 shares $1.03 billion -11.4%1.3%2.4 $316.38
5/31/20253,680,000 shares $1.28 billion -7.8%1.5%2.6 $347.64
5/15/20253,990,000 shares $1.35 billion +32.6%1.6%2.7 $338.19
4/30/20253,010,000 shares $964.01 million -13.8%N/A1.9 $320.27
4/15/20253,490,000 shares $1.17 billion -6.7%1.4%2.2 $335.20
3/31/20253,740,000 shares $1.29 billion +15.4%1.5%2.2 $345.01
3/15/20253,240,000 shares $1.05 billion -16.7%1.3%1.8 $325.35
2/28/20253,890,000 shares $1.31 billion +7.5%1.6%1.8 $337.61
2/15/20253,620,000 shares $1.16 billion +17.5%1.4%1.8 $321.59
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1/31/20253,080,000 shares $930.78 million -17.7%N/A1.6 $302.20
1/15/20253,740,000 shares $1.09 billion -60.1%N/A2.1 $290.58
12/31/20249,370,000 shares $2.66 billion +27.7%N/A5.4 $283.85
12/15/20247,340,000 shares $2.09 billion +157.5%N/A5 $284.59
11/30/20242,850,000 shares $889.88 million +3.3%N/A2.5 $312.24
11/15/20242,760,000 shares $813.04 million -3.5%N/A3 $294.58
10/31/20242,860,000 shares $804.20 million +1.1%N/A3.4 $281.19
10/15/20242,830,000 shares $813.43 million +19.4%N/A3.4 $287.43
9/30/20242,370,000 shares $666.85 million -16.3%N/A2.9 $281.37
9/15/20242,830,000 shares $841.61 million +5.2%N/A3.6 $297.39
8/31/20242,690,000 shares $787.01 million +15.5%N/A3.4 $292.57
8/15/20242,330,000 shares $662.65 million -12.1%N/A2.9 $284.40
7/31/20242,650,000 shares $751.14 million -16.4%N/A3.2 $283.45
7/15/20243,170,000 shares $857.36 million -5.4%N/A3.9 $270.46
6/30/20243,350,000 shares $868.69 million +19.2%N/A4 $259.31
6/15/20242,810,000 shares $725.65 million +4.9%N/A3.4 $258.24
5/31/20242,680,000 shares $678.92 million +25.8%N/A3.3 $253.33
5/15/20242,130,000 shares $536.23 million +19.0%N/A2.7 $251.75
4/30/20241,790,000 shares $420.13 million -15.2%N/A2.2 $234.71
4/15/20242,110,000 shares $489.71 million +6.0%N/A2.4 $232.09
3/31/20241,990,000 shares $497.58 million -11.2%N/A2.3 $250.04
3/15/20242,240,000 shares $567.10 million -6.3%N/A2.6 $253.17
2/29/20242,390,000 shares $582.99 million +23.8%N/A2.5 $243.93
2/15/20241,930,000 shares $464.40 million +6.6%N/A2 $240.62
1/31/20241,810,000 shares $420.21 million +6.5%N/A1.9 $232.16
1/15/20241,700,000 shares $399.16 million -11.9%N/A1.8 $234.80
12/31/20231,930,000 shares $434.02 million -5.9%N/A2.1 $224.88
12/15/20232,050,000 shares $456.76 million -17.3%N/A2.3 $222.81
11/30/20232,480,000 shares $617.32 million +9.3%N/A3.1 $248.92
11/15/20232,270,000 shares $546.41 million +17.0%N/A2.9 $240.71
10/31/20231,940,000 shares $456.85 million -7.6%N/A2.6 $235.49
10/15/20232,100,000 shares $491.15 million +4.0%N/A3 $233.88
9/30/20232,020,000 shares $460.42 million +12.9%N/A2.8 $227.93
9/15/20231,790,000 shares $411.95 million -26.6%N/A2.5 $230.14
8/31/20232,440,000 shares $562.37 million +53.5%N/A3.2 $230.48
8/15/20231,590,000 shares $355.87 million +12.0%N/A2 $223.82
7/31/20231,420,000 shares $305.02 million -15.0%N/A1.7 $214.81
7/15/20231,670,000 shares $357.18 million +1.2%N/A1.9 $213.88
6/30/20231,650,000 shares $362.29 million +0.6%N/A1.9 $219.57
6/15/20231,640,000 shares $350.35 million -11.4%N/A1.8 $213.63
5/31/20231,850,000 shares $370.63 million -15.1%N/A1.9 $200.34
5/15/20232,180,000 shares $474.87 million +1.4%N/A2.2 $217.83
4/30/20232,150,000 shares $447.33 million +1.9%N/A2.3 $208.06
4/15/20232,110,000 shares $422.95 million +22.7%N/A2.2 $200.45
3/31/20231,720,000 shares $329.05 million -13.1%N/A1.9 $191.31
3/15/20231,980,000 shares $350.64 million +10.0%N/A2.3 $177.09
2/28/20231,800,000 shares $337.23 million +37.4%N/A2.4 $187.35
2/15/20231,310,000 shares $249.33 million -17.6%N/A1.8 $190.33
1/31/20231,590,000 shares $311.19 million +14.4%N/A2.1 $195.72
1/15/20231,390,000 shares $273.20 million +18.8%N/A1.7 $196.55
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12/30/20221,170,000 shares $220.59 million -9.3%N/A1.4 $188.54
12/15/20221,290,000 shares $242.65 million -9.2%N/A1.4 $188.10
11/30/20221,420,000 shares $282.74 million -32.1%N/A1.4 $199.11
11/15/20222,090,000 shares $392.46 million +3.5%N/A2.2 $187.78
10/31/20222,020,000 shares $377.90 million -6.9%N/A2.1 $187.08
10/15/20222,170,000 shares $369.68 million -10.7%N/A2.3 $170.36
9/30/20222,430,000 shares $416.06 million -4.7%N/A2.7 $171.22
9/15/20222,550,000 shares $470.53 million -11.2%N/A2.9 $184.52
8/31/20222,870,000 shares $521.11 million +26.4%N/A3.5 $181.57
8/15/20222,270,000 shares $431.64 million +1.8%N/A2.8 $190.15
7/31/20222,230,000 shares $399.15 million +19.3%N/A2.7 $178.99
7/15/20221,870,000 shares $309.95 million +2.8%N/A2.2 $165.75
6/30/20221,820,000 shares $296.73 million +24.7%N/A2 $163.04
6/15/20221,460,000 shares $223.02 million -11.0%N/A1.5 $152.75
5/31/20221,640,000 shares $265.58 million -6.8%N/A1.7 $161.94
5/15/20221,760,000 shares $285.16 million +12.8%N/A1.8 $162.02
4/30/20221,560,000 shares $262.84 million -17.0%N/A1.6 $168.49
4/15/20221,880,000 shares $339.55 million +17.5%N/A1.8 $180.61
3/31/20221,600,000 shares $279.36 million -5.3%N/A1.6 $174.60
3/15/20221,690,000 shares $267.97 million +11.2%N/A1.7 $158.56
2/28/20221,520,000 shares $240.45 million -24.0%N/A1.5 $158.19
2/15/20222,000,000 shares $310.78 million +1.0%N/A2 $155.39
1/31/20221,980,000 shares $312.72 million +4.8%N/A2 $157.94
1/15/20221,890,000 shares $298.05 million +8.6%N/A2.1 $157.70
12/31/20211,740,000 shares $295.23 million +10.8%N/A2 $169.67
12/15/20211,570,000 shares $263.15 million -11.8%N/A1.7 $167.61
11/30/20211,780,000 shares $289.96 million +1.1%N/A1.9 $162.90
11/15/20211,760,000 shares $291.07 million -10.7%N/A1.8 $165.38
10/29/20211,970,000 shares $330.31 million -7.5%N/A2 $167.67
10/15/20212,130,000 shares $346.93 million -17.8%N/A2.1 $162.88

AJG Short Interest - Frequently Asked Questions

Short interest is the volume of Arthur J. Gallagher & Co. shares that have been sold short but have not yet been closed out or covered. As of September 30th, traders have sold 8,234,507 shares of AJG short. 3.26% of Arthur J. Gallagher & Co.'s shares are currently sold short. Learn More on Arthur J. Gallagher & Co.'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. AJG shares currently have a short interest ratio of 5.5. Learn More on Arthur J. Gallagher & Co.'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. 3.26% of Arthur J. Gallagher & Co.'s floating shares are currently sold short.

Arthur J. Gallagher & Co. saw a increase in short interest during the month of September. As of September 30th, there was short interest totaling 8,234,507 shares, an increase of 29.2% from the previous total of 6,372,633 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.

3.26% of Arthur J. Gallagher & Co.'s shares are currently sold short. Here is how the short interest of companies in the industry of "insurance" compare to Arthur J. Gallagher & Co.: Arch Capital Group Ltd. (2.33%), Erie Indemnity Company (10.18%), Willis Towers Watson Public Limited Company (3.20%), Aon plc (2.01%), Brown & Brown, Inc. (4.87%), Ryan Specialty Holdings Inc. (10.67%), Marsh & McLennan Companies, Inc. (1.34%), Hagerty, Inc. (0.52%), Baldwin Insurance Group, Inc. (6.39%), Neptune Insurance Holdings Inc. (6.97%),

As of the most recent reporting period, the following stocks had the largest short interest positions: SPDR S&P 500 ETF Trust ($75.10 billion), Invesco QQQ ($52.12 billion), iShares Russell 2000 ETF ($25.28 billion), SPDR S&P Biotech ETF ($11.70 billion), Nebius Group N.V. ($10.54 billion), iShares iBoxx $ Investment Grade Corporate Bond ETF ($9.69 billion), iShares iBoxx $ High Yield Corporate Bond ETF ($9.22 billion), iShares 20+ Year Treasury Bond ETF ($8.80 billion), Financial Select Sector SPDR Fund ($7.65 billion), and Lumentum Holdings Inc. ($7.23 billion). View all of the most shorted stocks.

Short selling AJG is an investing strategy that aims to generate trading profit from Arthur J. Gallagher & Co. as its price is falling. AJG shares are trading up $1.28 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 Arthur J. Gallagher & Co. 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 AJG, 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 AJG, twice per month. The most recent reporting period available is September, 30 2026.

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

  • 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 data for NYSE:AJG is sourced from the Financial Industry Regulatory Authority (FINRA), with the most recent report published on 10/9/2026. FINRA publishes updated short interest twice a month.
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