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Merck & Co., Inc. (MRK) Short Interest Ratio & Short Volume

Merck & Co., Inc. logo
$83.14 -0.12 (-0.14%)
Closing price 05/2/2025 03:59 PM Eastern
Extended Trading
$83.34 +0.20 (+0.24%)
As of 05/2/2025 07:59 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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Merck & Co., Inc. Short Interest Data

Merck & Co., Inc. (MRK) has a short interest of 41.93 million shares, representing 1.67% of the float (the number of shares available for trading by the public). This marks a 10.52% increase in short interest from the previous month. The short interest ratio (days to cover) is 2.4, indicating that it would take 2.4 days of the average trading volume of 12.03 million shares to cover all short positions.

Current Short Interest
41,930,000 shares
Previous Short Interest
37,940,000 shares
Change Vs. Previous Month
+10.52%
Dollar Volume Sold Short
$3.28 billion
Short Interest Ratio
2.4 Days to Cover
Last Record Date
April 15, 2025
Outstanding Shares
2,521,759,000 shares
Short Percent of Float
1.67%
Today's Trading Volume
11,754,543 shares
Average Trading Volume
12,026,928 shares
Today's Volume Vs. Average
98%
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Short Interest ChartDays to Cover ChartShort Percent of Float Chart

MRK Short Interest Over Time

MRK Days to Cover Over Time

MRK Percentage of Float Shorted Over Time

Merck & Co., Inc. 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
4/15/202541,930,000 shares $3.28 billion +10.5%1.7%2.4 $78.28
3/31/202537,940,000 shares $3.40 billion +2.2%1.5%2.3 $89.74
3/15/202537,130,000 shares $3.52 billion -9.3%1.5%2.4 $94.72
2/28/202540,940,000 shares $3.78 billion +27.1%1.6%2.8 $92.23
2/15/202532,210,000 shares $2.67 billion +8.8%1.3%2.3 $83.01
1/31/202529,600,000 shares $2.92 billion -13.3%1.2%2.3 $98.80
1/15/202534,120,000 shares $3.42 billion +10.3%N/A3 $100.20
12/31/202430,930,000 shares $3.08 billion -3.4%N/A2.8 $99.48
12/15/202432,030,000 shares $3.27 billion -2.3%N/A2.8 $102.00
11/30/202432,790,000 shares $3.33 billion +24.6%N/A3.1 $101.64
11/15/202426,320,000 shares $2.53 billion +0.3%N/A2.6 $96.30
10/31/202426,230,000 shares $2.68 billion +0.7%N/A2.8 $102.32
10/15/202426,040,000 shares $2.90 billion -4.5%N/A2.6 $111.54
9/30/202427,260,000 shares $3.10 billion +9.9%N/A2.9 $113.56
9/15/202424,810,000 shares $2.87 billion -4.3%N/A2.5 $115.86
8/31/202425,910,000 shares $3.07 billion +4.4%N/A2.7 $118.45
8/15/202424,810,000 shares $2.81 billion -7.2%N/A2.6 $113.31
7/31/202426,720,000 shares $3.02 billion +8.8%N/A2.9 $113.13
7/15/202424,570,000 shares $3.15 billion +5.2%N/A3 $128.12
6/30/202423,350,000 shares $2.89 billion +19.9%N/A2.8 $123.80
6/15/202419,470,000 shares $2.52 billion -4.6%N/A2.6 $129.48
5/31/202420,410,000 shares $2.56 billion +0.7%N/A2.5 $125.58
5/15/202420,270,000 shares $2.67 billion +8.1%N/A2.5 $131.74
4/30/202418,750,000 shares $2.42 billion -8.2%N/A2.3 $129.19
4/15/202420,430,000 shares $2.58 billion +4.3%N/A2.5 $126.19
3/31/202419,590,000 shares $2.58 billion -15.4%N/A2.3 $131.95
3/15/202423,160,000 shares $2.81 billion +39.5%N/A2.8 $121.53
2/29/202416,600,000 shares $2.11 billion -1.3%N/A2.1 $127.15
2/15/202416,820,000 shares $2.13 billion -1.2%N/A2 $126.54
1/31/202417,020,000 shares $2.06 billion -18.2%N/A2 $120.78
1/15/202420,810,000 shares $2.47 billion +16.5%N/A2.5 $118.63
12/31/202317,870,000 shares $1.95 billion +32.7%N/A2.2 $109.02
12/15/202313,470,000 shares $1.42 billion -19.3%N/A1.7 $105.64
11/30/202316,690,000 shares $1.71 billion -7.4%N/A2.3 $102.48
11/15/202318,020,000 shares $1.83 billion +9.8%N/A2.7 $101.35
10/31/202316,410,000 shares $1.68 billion +3.9%N/A2.5 $102.68
10/15/202315,790,000 shares $1.64 billion +6.5%N/A2.4 $104.01
9/30/202314,830,000 shares $1.53 billion +6.8%N/A2.2 $102.95
9/15/202313,880,000 shares $1.49 billion -5.2%N/A2 $107.47
8/31/202314,640,000 shares $1.60 billion +1.2%N/A2 $108.98
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8/15/202314,460,000 shares $1.57 billion +2.3%N/A1.9 $108.66
7/31/202314,140,000 shares $1.51 billion -21.1%N/A1.9 $106.65
7/15/202317,920,000 shares $1.92 billion +6.3%N/A2.5 $107.34
6/30/202316,860,000 shares $1.94 billion +12.7%N/A2.4 $115.36
6/15/202314,960,000 shares $1.64 billion -4.4%N/A2.1 $109.40
5/31/202315,650,000 shares $1.73 billion -20.2%N/A2.1 $110.41
5/15/202319,620,000 shares $2.28 billion +2.7%N/A2.6 $116.37
4/30/202319,100,000 shares $2.21 billion -10.5%N/A2.5 $115.47
4/15/202321,340,000 shares $2.46 billion -3.3%N/A2.6 $115.31
3/31/202322,070,000 shares $2.35 billion +13.0%N/A2.6 $106.39
3/15/202319,540,000 shares $2.10 billion -4.9%N/A2.3 $107.63
2/28/202320,550,000 shares $2.18 billion +5.6%N/A2.4 $106.24
2/15/202319,470,000 shares $2.10 billion +13.5%N/A2.2 $107.68
1/31/202317,150,000 shares $1.84 billion +5.7%N/A1.9 $107.41
1/15/202316,220,000 shares $1.82 billion -5.8%N/A1.7 $112.25
12/30/202217,210,000 shares $1.91 billion -16.1%N/A1.8 $110.95
12/15/202220,510,000 shares $2.25 billion +4.5%N/A2.2 $109.63
11/30/202219,630,000 shares $2.16 billion +0.8%N/A2.1 $110.12
11/15/202219,470,000 shares $1.94 billion -4.4%N/A2.2 $99.60
10/31/202220,360,000 shares $2.06 billion +5.8%N/A2.4 $101.20
10/15/202219,240,000 shares $1.77 billion -5.7%N/A2.3 $92.18
9/30/202220,400,000 shares $1.76 billion +4.9%N/A2.5 $86.12
9/15/202219,450,000 shares $1.69 billion +0.8%N/A2.2 $86.75
8/31/202219,290,000 shares $1.65 billion -2.4%N/A2 $85.36
8/15/202219,760,000 shares $1.79 billion +17.7%N/A1.9 $90.60
7/31/202216,790,000 shares $1.50 billion -17.4%N/A1.5 $89.34
7/15/202220,330,000 shares $1.93 billion -0.7%N/A1.8 $94.96
6/30/202220,470,000 shares $1.87 billion +2.6%N/A1.7 $91.17
6/15/202219,950,000 shares $1.69 billion -14.6%N/A1.7 $84.63
5/31/202223,350,000 shares $2.15 billion +8.3%N/A2 $92.03
5/15/202221,570,000 shares $1.95 billion +27.0%N/A1.9 $90.41
4/30/202216,980,000 shares $1.51 billion -11.9%0.7%1.5 $88.69
4/15/202219,280,000 shares $1.68 billion +14.4%0.8%1.6 $86.91
3/31/202216,860,000 shares $1.38 billion +1.6%0.7%1.4 $82.05
3/15/202216,590,000 shares $1.30 billion -14.8%0.7%1.4 $78.64
2/28/202219,460,000 shares $1.49 billion +10.3%0.8%1.5 $76.58
2/15/202217,650,000 shares $1.37 billion -12.2%0.7%1.3 $77.81
1/31/202220,090,000 shares $1.64 billion -14.5%0.8%1.4 $81.48
1/15/202223,490,000 shares $1.91 billion +1.4%0.9%1.7 $81.38
12/31/202123,160,000 shares $1.77 billion +8.8%0.9%1.7 $76.64
12/15/202121,290,000 shares $1.60 billion +13.7%0.8%1.3 $75.29
11/30/202118,730,000 shares $1.40 billion -15.6%0.7%1.1 $74.91
11/15/202122,180,000 shares $1.86 billion +6.4%0.9%1.5 $83.69
10/29/202120,840,000 shares $1.83 billion -4.8%N/A1.4 $88.05
10/15/202121,880,000 shares $1.71 billion -3.0%N/A1.6 $78.33
9/30/202122,560,000 shares $1.69 billion -19.9%N/A1.7 $75.11
9/15/202128,180,000 shares $2.05 billion +2.8%N/A2.7 $72.81
8/31/202127,420,000 shares $2.09 billion +2.7%N/A2.7 $76.29
8/13/202126,690,000 shares $2.05 billion +15.2%N/A2.5 $76.72
7/30/202123,170,000 shares $1.78 billion +4.1%N/A2.1 $76.87
Silicon Valley Gold Rush (Ad)

A new technology has sparked a modern-day gold rush in Silicon Valley. OpenAI’s Sam Altman invested $375M. Bill Gates has backed four companies in this space. The World Economic Forum calls it “the most exciting human discovery since fire.” Whitney Tilson believes this trend could mint a new class of wealthy investors—and he’s sharing one stock to watch now, for free.

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7/15/202122,250,000 shares $1.73 billion -7.0%N/A1.9 $77.90
6/30/202123,930,000 shares $1.86 billion +8.4%N/A2 $77.77
6/15/202122,070,000 shares $1.67 billion +17.2%N/A1.9 $75.70
5/28/202118,830,000 shares $1.43 billion -9.4%N/A1.5 $75.89
5/14/202120,790,000 shares $1.64 billion +1.6%0.8%1.7 $78.69
4/30/202120,470,000 shares $1.51 billion -2.6%0.8%1.6 $73.68
4/15/202121,020,000 shares $1.61 billion -11.5%0.8%1.8 $76.40
3/31/202123,740,000 shares $1.83 billion +30.9%0.9%2 $76.96
3/15/202118,140,000 shares $1.35 billion -11.0%0.7%1.5 $74.60
2/26/202120,380,000 shares $1.52 billion +10.3%0.8%2 $74.62
2/12/202118,470,000 shares $1.38 billion -0.6%0.7%1.9 $74.74
1/29/202118,580,000 shares $1.45 billion +1.9%0.7%2 $77.92
1/15/202118,230,000 shares $1.50 billion +14.2%0.7%2 $82.17
12/31/202015,970,000 shares $1.29 billion +17.5%0.6%1.8 $80.59
12/15/202013,590,000 shares $1.09 billion +0.7%0.5%1.6 $80.32
11/30/202013,500,000 shares $1.08 billion +0.3%N/A1.6 $79.86
11/15/202013,460,000 shares $1.09 billion -8.8%0.5%1.6 $81.09
10/30/202014,750,000 shares $1.12 billion +40.1%0.6%1.8 $75.89
10/15/202010,530,000 shares $847.77 million -4.1%0.4%1.3 $80.51
9/30/202010,980,000 shares $910.79 million +0.1%0.4%1.4 $82.95
9/15/202010,970,000 shares $923.78 million -9.4%0.4%1.4 $84.21
8/31/202012,110,000 shares $1.03 billion +2.6%0.5%1.4 $85.27
8/14/202011,800,000 shares $985.06 million -13.9%0.5%1.3 $83.48
7/31/202013,700,000 shares $1.10 billion -6.4%0.5%1.4 $80.24
7/15/202014,640,000 shares $1.16 billion -1.6%0.6%1.5 $79.44
6/30/202014,880,000 shares $1.15 billion +2.2%0.6%1.4 $77.33
6/15/202014,560,000 shares $1.08 billion -7.9%0.6%1.3 $74.02
5/29/202015,810,000 shares $1.28 billion -16.8%0.6%1.2 $80.72
5/15/202018,990,000 shares $1.52 billion +0.5%0.8%1.4 $79.78

MRK Short Interest - Frequently Asked Questions

What is Merck & Co., Inc.'s current short interest?

Short interest is the volume of Merck & Co., Inc. shares that have been sold short but have not yet been covered or closed out. As of April 15th, traders have sold 41,930,000 shares of MRK short. 1.67% of Merck & Co., Inc.'s shares are currently sold short. Learn More on Merck & Co., Inc.'s current short interest.

What is a good short interest ratio for Merck & Co., Inc.?

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. MRK shares currently have a short interest ratio of 2.0. Learn More on Merck & Co., Inc.'s short interest ratio.

Which institutional investors are shorting Merck & Co., Inc.?

As of the most recent reporting period, the following institutional investors, funds, and major shareholders have reported short positions of Merck & Co., Inc.: Concurrent Investment Advisors LLC, Fulcrum Asset Management LLP, IMC Chicago LLC, Insight Advisors LLC PA, CTC LLC, Wolverine Trading LLC, Squarepoint Ops LLC, Point72 Asset Management L.P., Man Group plc, Maven Securities LTD, Millennium Management LLC, Laurion Capital Management LP, Jefferies Financial Group Inc., Group One Trading LLC, Eisler Capital Management Ltd., D. E. Shaw & Co. Inc., Cubist Systematic Strategies LLC, Capstone Investment Advisors LLC, Citadel Advisors LLC, Balyasny Asset Management L.P., Bank of America Corp DE, BNP Paribas Financial Markets, Jane Street Group LLC, Berkley W R Corp, Lido Advisors LLC, Tudor Investment Corp ET AL, Parallax Volatility Advisers L.P., Susquehanna International Group LLP, SIH Partners LLLP, HAP Trading LLC, Concourse Financial Group Securities Inc., Marshall Wace LLP, Walleye Trading LLC, Walleye Capital LLC, Barclays PLC, Capital Fund Management S.A., Capula Management Ltd, Wells Fargo & Company MN, JPMorgan Chase & Co., Mirae Asset Securities USA Inc., Simplex Trading LLC, Twin Tree Management LP, Delta Accumulation LLC, Marathon Trading Investment Management LLC, Allianz Asset Management GmbH, and Wolverine Asset Management LLC. These positions are disclosed in Form 13F filings with the Securities and Exchange Commission.

What is a good short interest percentage for Merck & Co., Inc.?

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. 1.67% of Merck & Co., Inc.'s floating shares are currently sold short.

Is Merck & Co., Inc.'s short interest increasing or decreasing?

Merck & Co., Inc. saw a increase in short interest in the month of April. As of April 15th, there was short interest totaling 41,930,000 shares, an increase of 10.5% from the previous total of 37,940,000 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 Merck & Co., Inc.'s short interest compare to its competitors?

1.67% of Merck & Co., Inc.'s shares are currently sold short. Here is how the short interest of companies in the industry of "pharmaceutical preparations" compare to Merck & Co., Inc.: Eli Lilly and Company (0.76%), Johnson & Johnson (0.87%), AbbVie Inc. (0.96%), Pfizer Inc. (1.90%), Bristol-Myers Squibb (1.48%), Zoetis Inc. (1.74%), Royalty Pharma plc (6.15%), Corcept Therapeutics Incorporated (13.18%), Jazz Pharmaceuticals plc (7.81%), Perrigo Company plc (3.59%),

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 ($21.71 billion), iShares 20+ Year Treasury Bond ETF ($9.48 billion), Strategy Incorporated ($8.92 billion), Charter Communications, Inc. ($3.86 billion), Apollo Global Management, Inc. ($3.86 billion), Capital One Financial Co. ($3.72 billion), Super Micro Computer, Inc. ($3.47 billion), AppLovin Co. ($2.64 billion), VanEck Semiconductor ETF ($2.46 billion), and The Kroger Co. ($2.33 billion). View all of the most shorted stocks.

What does it mean to sell short Merck & Co., Inc. stock?

Short selling MRK is an investing strategy that aims to generate trading profit from Merck & Co., Inc. as its price is falling. MRK shares are trading down $0.12 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 Merck & Co., Inc.?

A short squeeze for Merck & Co., Inc. 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 MRK, which in turn drives the price of the stock up even further.

How often is Merck & Co., Inc.'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 MRK, twice per month. The most recent reporting period available is April, 15 2025.



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This page (NYSE:MRK) was last updated on 5/3/2025 by MarketBeat.com Staff
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