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Thermo Fisher Scientific (TMO) Short Interest Ratio & Short Volume

Thermo Fisher Scientific logo
$393.53 -6.95 (-1.74%)
Closing price 05/23/2025 03:59 PM Eastern
Extended Trading
$399.95 +6.42 (+1.63%)
As of 05/23/2025 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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Thermo Fisher Scientific Short Interest Data

Thermo Fisher Scientific (TMO) has a short interest of 4.54 million shares, representing 1.20% of the float (the number of shares available for trading by the public). This marks a -5.22% decrease in short interest from the previous month. The short interest ratio (days to cover) is 1.9, indicating that it would take 1.9 days of the average trading volume of 1.87 million shares to cover all short positions.

Current Short Interest
4,540,000 shares
Previous Short Interest
4,790,000 shares
Change Vs. Previous Month
-5.22%
Dollar Volume Sold Short
$1.95 billion
Short Interest Ratio
1.9 Days to Cover
Last Record Date
April 30, 2025
Outstanding Shares
377,494,000 shares
Float Size
376,830,000 shares
Short Percent of Float
1.20%
Today's Trading Volume
2,318,052 shares
Average Trading Volume
1,869,410 shares
Today's Volume Vs. Average
124%
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Short Interest ChartDays to Cover ChartShort Percent of Float Chart

TMO Short Interest Over Time

TMO Days to Cover Over Time

TMO Percentage of Float Shorted Over Time

Thermo Fisher 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
4/30/20254,540,000 shares $1.95 billion -5.2%1.2%1.9 $428.48
4/15/20254,790,000 shares $2.11 billion +21.6%1.3%2.2 $440.91
3/31/20253,940,000 shares $1.96 billion -7.7%1.1%1.9 $498.05
3/15/20254,270,000 shares $2.24 billion +2.9%1.1%2.3 $523.44
2/28/20254,150,000 shares $2.20 billion +7.5%1.1%2.1 $528.99
2/15/20253,860,000 shares $2.06 billion -2.3%1.0%1.9 $532.58
1/31/20253,950,000 shares $2.36 billion +14.2%1.0%1.9 $598.40
1/15/20253,460,000 shares $1.91 billion -1.7%0.9%1.8 $551.64
12/31/20243,520,000 shares $1.83 billion -11.1%0.9%2 $520.23
12/15/20243,960,000 shares $2.09 billion +11.9%1.0%2.3 $526.89
11/30/20243,540,000 shares $1.87 billion +9.6%0.9%2.2 $529.63
11/15/20243,230,000 shares $1.66 billion +10.2%0.9%2.2 $513.08
10/31/20242,930,000 shares $1.60 billion -3.9%0.8%2.4 $546.55
10/15/20243,050,000 shares $1.83 billion -11.6%0.8%2.3 $600.52
9/30/20243,450,000 shares $2.13 billion -13.5%0.9%2.6 $618.57
9/15/20243,990,000 shares $2.44 billion +12.7%1.1%2.7 $611.17
8/31/20243,540,000 shares $2.18 billion +6.6%0.9%2.3 $615.07
8/15/20243,320,000 shares $2.00 billion -7.3%0.9%2.1 $603.69
7/31/20243,580,000 shares $2.20 billion +17.8%0.9%2.3 $613.34
7/15/20243,040,000 shares $1.65 billion -10.3%0.8%2 $544.30
6/30/20243,390,000 shares $1.87 billion +6.3%0.9%2.3 $553.00
6/15/20243,190,000 shares $1.82 billion -1.5%0.8%2.3 $572.05
5/31/20243,240,000 shares $1.84 billion +15.7%0.9%2.4 $567.98
5/15/20242,800,000 shares $1.68 billion +1.1%0.7%2.1 $599.02
4/30/20242,770,000 shares $1.58 billion +7.0%0.7%2 $568.74
4/15/20242,590,000 shares $1.44 billion +0.4%0.7%1.8 $557.87
3/31/20242,580,000 shares $1.50 billion -24.8%0.7%1.7 $581.21
3/15/20243,430,000 shares $2.00 billion +16.7%0.9%2.2 $584.15
2/29/20242,940,000 shares $1.67 billion +1.0%0.8%1.7 $569.25
2/15/20242,910,000 shares $1.60 billion +1.0%0.8%1.7 $548.57
1/31/20242,880,000 shares $1.55 billion -1.4%0.8%1.6 $538.93
1/15/20242,920,000 shares $1.59 billion -0.3%0.8%1.5 $544.32
12/31/20232,930,000 shares $1.56 billion +0.7%0.8%1.5 $530.79
12/15/20232,910,000 shares $1.51 billion +16.4%0.8%1.6 $518.40
11/30/20232,500,000 shares $1.24 billion -8.1%0.7%1.4 $495.76
11/15/20232,720,000 shares $1.28 billion -1.1%0.7%1.5 $470.59
10/31/20232,750,000 shares $1.22 billion +0.4%0.7%1.7 $444.85
10/15/20232,740,000 shares $1.32 billion +13.7%0.7%1.9 $482.85
9/30/20232,410,000 shares $1.22 billion -13.0%0.6%1.7 $506.17
9/15/20232,770,000 shares $1.43 billion +6.1%0.7%1.9 $515.42
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8/31/20232,610,000 shares $1.45 billion +2.0%0.7%1.8 $557.10
8/15/20232,560,000 shares $1.37 billion -15.8%0.7%1.6 $534.40
7/31/20233,040,000 shares $1.67 billion +11.4%0.8%1.8 $548.66
7/15/20232,730,000 shares $1.45 billion -2.5%0.7%1.6 $529.36
6/30/20232,800,000 shares $1.46 billion +1.5%0.7%1.8 $521.38
6/15/20232,760,000 shares $1.48 billion -11.3%0.7%1.8 $535.11
5/31/20233,110,000 shares $1.58 billion +3.3%0.8%2.1 $508.46
5/15/20233,010,000 shares $1.58 billion -1.6%0.8%2.3 $523.68
4/30/20233,060,000 shares $1.70 billion +3.7%0.8%2.5 $554.90
4/15/20232,950,000 shares $1.74 billion -3.0%0.8%2.4 $588.84
3/31/20233,040,000 shares $1.75 billion +5.6%0.8%2.3 $576.37
3/15/20232,880,000 shares $1.56 billion +15.2%0.8%2.1 $542.70
2/28/20232,500,000 shares $1.35 billion -5.7%0.7%1.7 $541.76
2/15/20232,650,000 shares $1.50 billion +12.3%0.7%1.8 $566.83
1/31/20232,360,000 shares $1.35 billion -22.6%0.6%1.5 $570.33
1/15/20233,050,000 shares $1.78 billion +8.2%0.8%1.8 $583.84
12/30/20222,820,000 shares $1.55 billion -7.2%0.7%1.7 $550.69
12/15/20223,040,000 shares $1.68 billion +5.9%0.8%1.9 $553.79
11/30/20222,870,000 shares $1.61 billion -3.7%0.7%1.9 $560.22
11/15/20222,980,000 shares $1.63 billion +2.1%0.8%2 $546.09
10/31/20222,920,000 shares $1.50 billion -3.3%0.8%2.1 $513.97
10/15/20223,020,000 shares $1.52 billion +4.9%0.8%2.4 $503.05
9/30/20222,880,000 shares $1.46 billion -8.3%0.7%2.3 $507.19
9/15/20223,140,000 shares $1.73 billion +18.9%0.8%2.7 $551.98
8/31/20222,640,000 shares $1.44 billion -6.4%0.7%2.2 $545.32
8/15/20222,820,000 shares $1.70 billion +6.0%0.7%2.3 $604.49
7/31/20222,660,000 shares $1.59 billion -3.3%0.7%2 $598.41
7/15/20222,750,000 shares $1.48 billion -6.8%0.7%1.9 $538.87
6/30/20222,950,000 shares $1.60 billion +13.5%N/A2.1 $543.28
6/15/20222,600,000 shares $1.34 billion -14.5%N/A1.8 $514.76
5/31/20223,040,000 shares $1.73 billion -7.9%0.8%2.1 $567.57
5/15/20223,300,000 shares $1.79 billion -2.7%0.8%2.2 $541.42
4/30/20223,390,000 shares $1.87 billion +39.5%0.9%2.2 $552.92
4/15/20222,430,000 shares $1.38 billion -13.5%0.6%1.6 $568.90
3/31/20222,810,000 shares $1.66 billion +4.5%0.7%1.7 $590.65
3/15/20222,690,000 shares $1.48 billion +0.4%0.7%1.7 $550.64
2/28/20222,680,000 shares $1.46 billion +3.5%0.7%1.7 $544.00
2/15/20222,590,000 shares $1.44 billion +7.5%N/A1.6 $556.67
1/31/20222,410,000 shares $1.40 billion -11.4%N/A1.6 $581.30
1/15/20222,720,000 shares $1.62 billion +7.9%N/A1.8 $594.80
12/31/20212,520,000 shares $1.68 billion -7.4%N/A1.9 $667.24
12/15/20212,720,000 shares $1.78 billion -2.5%N/A2.1 $655.74
11/30/20212,790,000 shares $1.77 billion +6.1%N/A2 $632.83
11/15/20212,630,000 shares $1.66 billion +7.4%N/A2.1 $632.36
10/29/20212,450,000 shares $1.55 billion -5.8%N/A2 $633.07
10/15/20212,600,000 shares $1.51 billion +1.2%0.7%2.2 $582.39
9/30/20212,570,000 shares $1.47 billion -0.8%0.7%2.2 $571.33
9/15/20212,590,000 shares $1.46 billion -3.7%0.7%2.1 $562.96
8/31/20212,690,000 shares $1.49 billion -5.0%0.7%2.2 $554.95
8/13/20212,830,000 shares $1.54 billion -4.4%0.7%1.9 $544.64
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7/30/20212,960,000 shares $1.60 billion -1.3%0.8%1.9 $540.01
7/15/20213,000,000 shares $1.54 billion -1.6%0.8%1.8 $514.48
6/30/20213,050,000 shares $1.54 billion +8.5%0.8%1.7 $504.47
6/15/20212,810,000 shares $1.32 billion -13.0%0.7%1.6 $470.08
5/28/20213,230,000 shares $1.52 billion -8.2%0.8%1.8 $469.50
5/14/20213,520,000 shares $1.61 billion +10.3%0.9%2.1 $456.92
4/30/20213,190,000 shares $1.48 billion -1.5%0.8%1.8 $464.39
4/15/20213,240,000 shares $1.55 billion +19.1%0.8%1.8 $478.04
3/31/20212,720,000 shares $1.23 billion -13.4%0.7%1.5 $451.47
3/15/20213,140,000 shares $1.41 billion +14.2%0.8%1.8 $450.49
2/26/20212,750,000 shares $1.24 billion -3.5%0.7%1.6 $451.47
2/12/20212,850,000 shares $1.41 billion -3.4%0.7%1.6 $494.05
1/29/20212,950,000 shares $1.46 billion +17.5%0.8%1.6 $496.48
1/15/20212,510,000 shares $1.25 billion -9.1%0.6%1.4 $496.91
12/31/20202,760,000 shares $1.27 billion +17.5%0.7%1.6 $461.73
12/15/20202,350,000 shares $1.10 billion -6.0%0.6%1.5 $467.13
11/30/20202,500,000 shares $1.13 billion +7.8%0.6%1.6 $453.40
11/15/20202,320,000 shares $1.13 billion -2.5%0.6%1.5 $488.59
10/30/20202,380,000 shares $1.12 billion +7.7%0.6%1.7 $471.88
10/15/20202,210,000 shares $1.03 billion -6.8%0.6%1.8 $467.01
9/30/20202,370,000 shares $1.05 billion -23.1%0.6%1.9 $441.52
9/15/20203,080,000 shares $1.34 billion +21.7%0.8%2.4 $435.10
8/31/20202,530,000 shares $1.09 billion -3.4%0.6%1.9 $428.98
8/14/20202,620,000 shares $1.08 billion -14.1%0.7%2 $413.76
7/31/20203,050,000 shares $1.26 billion -2.2%0.8%2.2 $413.95
7/15/20203,120,000 shares $1.21 billion +4.0%0.8%2.1 $387.46
6/30/20203,000,000 shares $1.09 billion -18.0%0.8%1.9 $362.34
6/15/20203,660,000 shares $1.25 billion +6.1%0.9%2.1 $340.82
5/29/20203,450,000 shares $1.20 billion -1.7%0.9%1.6 $349.19

TMO Short Interest - Frequently Asked Questions

What is Thermo Fisher Scientific's current short interest?

Short interest is the volume of Thermo Fisher Scientific shares that have been sold short but have not yet been closed out or covered. As of April 30th, traders have sold 4,540,000 shares of TMO short. 1.20% of Thermo Fisher Scientific's shares are currently sold short. Learn More on Thermo Fisher Scientific's current short interest.

What is a good short interest ratio for Thermo Fisher 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. TMO shares currently have a short interest ratio of 2.0. Learn More on Thermo Fisher Scientific's short interest ratio.

Which institutional investors are shorting Thermo Fisher Scientific?

As of the most recent reporting period, the following institutional investors, funds, and major shareholders have reported short positions of Thermo Fisher Scientific: Jane Street Group LLC, Goldman Sachs Group Inc., Parallax Volatility Advisers L.P., Millennium Management LLC, Cubist Systematic Strategies LLC, Twin Tree Management LP, HAP Trading LLC, BNP Paribas Financial Markets, Brant Point Investment Management LLC, Eisler Capital Management Ltd., PEAK6 LLC, Jane Street Group LLC, Walleye Trading LLC, Walleye Capital LLC, Credit Agricole S A, Hsbc Holdings PLC, Maven Securities LTD, Arrowpoint Investment Partners Singapore Pte. Ltd., Simplex Trading LLC, JPMorgan Chase & Co., Wolverine Asset Management LLC, Citigroup Inc., XY Capital Ltd, Jefferies Financial Group Inc., Baader Bank Aktiengesellschaft, Readystate Asset Management LP, Allianz Asset Management GmbH, Caas Capital Management LP, and Fulcrum Asset Management LLP. These positions are disclosed in Form 13F filings with the Securities and Exchange Commission.

What is a good short interest percentage for Thermo Fisher 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. 1.20% of Thermo Fisher Scientific's floating shares are currently sold short.

Is Thermo Fisher Scientific's short interest increasing or decreasing?

Thermo Fisher Scientific saw a decline in short interest in April. As of April 30th, there was short interest totaling 4,540,000 shares, a decline of 5.2% from the previous total of 4,790,000 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.

What is Thermo Fisher Scientific's float size?

Thermo Fisher Scientific currently has issued a total of 377,494,000 shares. Some of Thermo Fisher Scientific's outstanding shares are available for trading, while others are subject to various restrictions. The public float, also referred to as floating shares or "the float", are shares that publicly owned, unrestricted and available to trade on the open market. Thermo Fisher Scientific currently has a public float of 376,830,000 shares.

How does Thermo Fisher Scientific's short interest compare to its competitors?

1.20% of Thermo Fisher Scientific's shares are currently sold short. Here is how the short interest of companies compare to Thermo Fisher Scientific: Agilent Technologies, Inc. (1.52%), Mettler-Toledo International Inc. (2.56%), Waters Co. (2.68%), Illumina, Inc. (3.51%), Bio-Techne Co. (4.13%), Bio-Rad Laboratories, Inc. (5.77%), Charles River Laboratories International, Inc. (5.44%), Bruker Co. (7.19%), Pacific Biosciences of California, Inc. (16.40%), Harvard Bioscience, Inc. (3.36%),

Which stocks are the most shorted right now?

As of the most recent reporting period, the following stocks had the largest short interest positions: Spotify Technology S.A. ($4.67 billion), Charter Communications, Inc. ($4.58 billion), Capital One Financial Co. ($4.47 billion), The Kroger Co. ($2.56 billion), Reddit, Inc. ($2.23 billion), Rivian Automotive, Inc. ($2.16 billion), Live Nation Entertainment, Inc. ($1.90 billion), SoFi Technologies, Inc. ($1.85 billion), Zscaler, Inc. ($1.75 billion), and Omnicom Group Inc. ($1.75 billion). View all of the most shorted stocks.

What does it mean to sell short Thermo Fisher Scientific stock?

Short selling TMO is an investing strategy that aims to generate trading profit from Thermo Fisher Scientific as its price is falling. TMO shares are trading down $6.95 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 Thermo Fisher Scientific?

A short squeeze for Thermo Fisher Scientific 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 TMO, which in turn drives the price of the stock up even further.

How often is Thermo Fisher 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 TMO, twice per month. The most recent reporting period available is April, 30 2025.



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This page (NYSE:TMO) was last updated on 5/24/2025 by MarketBeat.com Staff
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