Pfizer (PFE) Short Interest Ratio & Short Volume

$24.52 +0.29 (+1.18%)

Closing price 10/17/2025 03:59 PM Eastern

Extended Trading

$24.53 +0.02 (+0.06%)

As of 10/17/2025 07:59 PM Eastern

Pfizer Short Interest Data

Pfizer (PFE) has a short interest of 113.95 million shares. This marks a 0.90% 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 63.48 million shares to cover all short positions.

Current Short Interest: 113,950,000 shares
Previous Short Interest: 112,930,000 shares
Change Vs. Previous Month: +0.90%
Dollar Volume Sold Short: $2.90 billion
Short Interest Ratio: 2.4 Days to Cover
Last Record Date: September 30, 2025

Outstanding Shares: 5,685,550,000 shares
Percentage of Shares Shorted: 2.00%
Today's Trading Volume: 40,044,697 shares
Average Trading Volume: 63,484,864 shares
Today's Volume Vs. Average: 63%

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Short Interest Chart Days to Cover Chart Short Percent of Float Chart

PFE Short Interest Over Time

PFE Days to Cover Over Time

PFE Percentage of Float Shorted Over Time

Pfizer Short Interest History

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Report Date	Total Shares Sold Short	Dollar Volume Sold Short	Change from Previous Report	Percentage of Float Shorted	Days to Cover	Price on Report Date
9/30/2025	113,950,000 shares	$2.90 billion	+0.9%	N/A	2.4	$25.46
9/15/2025	112,930,000 shares	$2.71 billion	+9.1%	N/A	2.6	$23.98
8/31/2025	103,470,000 shares	$2.56 billion	-9.1%	1.8%	2.5	$24.74
8/15/2025	113,850,000 shares	$2.86 billion	+5.6%	N/A	2.8	$25.16
7/31/2025	107,780,000 shares	$2.51 billion	+8.6%	1.9%	2.5	$23.27
7/15/2025	99,270,000 shares	$2.44 billion	-11.3%	N/A	2.3	$24.63
6/30/2025	111,910,000 shares	$2.72 billion	+4.9%	2.0%	2.4	$24.27
6/15/2025	106,730,000 shares	$2.62 billion	+1.7%	1.9%	2.2	$24.51
5/31/2025	104,990,000 shares	$2.46 billion	-2.2%	1.9%	2	$23.46
5/15/2025	107,380,000 shares	$2.42 billion	-6.8%	1.9%	2	$22.57
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4/30/2025	115,160,000 shares	$2.81 billion	+7.2%	N/A	2.2	$24.41
4/15/2025	107,430,000 shares	$2.41 billion	+10.2%	1.9%	2.1	$22.45
3/31/2025	97,490,000 shares	$2.47 billion	-1.7%	1.7%	2	$25.36
3/15/2025	99,170,000 shares	$2.55 billion	+4.4%	1.8%	2.2	$25.74
2/28/2025	94,960,000 shares	$2.51 billion	+6.6%	1.7%	2.3	$26.43
2/15/2025	89,120,000 shares	$2.27 billion	+21.1%	1.6%	2.2	$25.50
1/31/2025	73,570,000 shares	$1.95 billion	-19.8%	N/A	1.7	$26.51
1/15/2025	91,780,000 shares	$2.41 billion	+21.2%	N/A	2.1	$26.25
12/31/2024	75,710,000 shares	$2.01 billion	-11.3%	N/A	1.8	$26.53
12/15/2024	85,370,000 shares	$2.18 billion	-5.5%	N/A	2	$25.58
11/30/2024	90,380,000 shares	$2.37 billion	-4.4%	N/A	2.3	$26.21
11/15/2024	94,540,000 shares	$2.34 billion	+52.8%	N/A	2.5	$24.80
10/31/2024	61,870,000 shares	$1.75 billion	-12.8%	N/A	1.9	$28.29
10/15/2024	70,940,000 shares	$2.09 billion	+4.9%	N/A	2.3	$29.46
9/30/2024	67,620,000 shares	$1.96 billion	-9.7%	N/A	2.1	$28.94
9/15/2024	74,840,000 shares	$2.19 billion	+14.5%	N/A	2.4	$29.27
8/31/2024	65,380,000 shares	$1.90 billion	+5.9%	N/A	2	$29.01
8/15/2024	61,730,000 shares	$1.77 billion	-5.5%	N/A	1.8	$28.71
7/31/2024	65,330,000 shares	$2.00 billion	+17.3%	N/A	1.9	$30.54
7/15/2024	55,700,000 shares	$1.62 billion	-7.0%	N/A	1.5	$29.10
6/30/2024	59,890,000 shares	$1.68 billion	-3.5%	N/A	1.6	$27.98
6/15/2024	62,070,000 shares	$1.71 billion	-18.3%	N/A	1.6	$27.53
5/31/2024	75,970,000 shares	$2.18 billion	+8.2%	N/A	1.9	$28.68
5/15/2024	70,220,000 shares	$2.02 billion	+12.3%	N/A	1.7	$28.82
4/30/2024	62,510,000 shares	$1.60 billion	-8.2%	N/A	1.5	$25.61
4/15/2024	68,060,000 shares	$1.76 billion	+4.7%	N/A	1.6	$25.90
3/31/2024	65,000,000 shares	$1.80 billion	-9.3%	N/A	1.5	$27.75
3/15/2024	71,650,000 shares	$2.00 billion	+8.4%	N/A	1.7	$27.97
2/29/2024	66,120,000 shares	$1.76 billion	+9.0%	N/A	1.4	$26.55
2/15/2024	60,680,000 shares	$1.67 billion	+0.8%	N/A	1.3	$27.51

1/31/2024	60,190,000 shares	$1.63 billion	+4.5%	N/A	1.3	$27.06
1/15/2024	57,580,000 shares	$1.65 billion	+1.0%	N/A	1.4	$28.70
12/31/2023	57,030,000 shares	$1.64 billion	-7.9%	N/A	1.4	$28.79
12/15/2023	61,890,000 shares	$1.65 billion	+8.7%	N/A	1.6	$26.59
11/30/2023	56,940,000 shares	$1.73 billion	-1.0%	N/A	1.8	$30.44
11/15/2023	57,500,000 shares	$1.74 billion	+21.9%	N/A	2	$30.19
10/31/2023	47,180,000 shares	$1.44 billion	-13.5%	N/A	1.8	$30.56
10/15/2023	54,570,000 shares	$1.75 billion	+6.8%	N/A	2	$32.11
9/30/2023	51,080,000 shares	$1.69 billion	+2.3%	N/A	2.1	$33.17
9/15/2023	49,950,000 shares	$1.70 billion	-1.0%	N/A	2	$34.03
8/31/2023	50,460,000 shares	$1.79 billion	-3.7%	N/A	2.1	$35.38
8/15/2023	52,390,000 shares	$1.85 billion	+14.2%	N/A	1.9	$35.39
7/31/2023	45,860,000 shares	$1.65 billion	-13.0%	N/A	1.7	$36.06
7/15/2023	52,680,000 shares	$1.91 billion	-11.5%	N/A	2	$36.32
6/30/2023	59,510,000 shares	$2.18 billion	+8.0%	N/A	2.3	$36.68
6/15/2023	55,120,000 shares	$2.19 billion	-1.2%	N/A	2.2	$39.77
5/31/2023	55,780,000 shares	$2.12 billion	+21.5%	N/A	2.3	$38.02
5/15/2023	45,920,000 shares	$1.71 billion	+4.7%	N/A	1.9	$37.16
4/30/2023	43,870,000 shares	$1.71 billion	+6.0%	N/A	2.1	$38.89
4/15/2023	41,370,000 shares	$1.70 billion	-15.7%	N/A	1.9	$41.19
3/31/2023	49,070,000 shares	$2.00 billion	+11.2%	N/A	2.1	$40.80
3/15/2023	44,140,000 shares	$1.78 billion	+14.7%	N/A	2	$40.28
2/28/2023	38,490,000 shares	$1.56 billion	+1.2%	N/A	1.7	$40.57
2/15/2023	38,020,000 shares	$1.65 billion	-2.9%	N/A	1.7	$43.32
1/31/2023	39,170,000 shares	$1.73 billion	+5.4%	N/A	1.8	$44.16
1/15/2023	37,170,000 shares	$1.78 billion	-12.6%	N/A	1.7	$47.85
12/30/2022	42,530,000 shares	$2.18 billion	-26.7%	N/A	2	$51.24
12/15/2022	58,020,000 shares	$3.11 billion	-7.7%	N/A	2.7	$53.61
11/30/2022	62,830,000 shares	$3.15 billion	-10.3%	N/A	3.1	$50.13
11/15/2022	70,040,000 shares	$3.40 billion	+28.1%	N/A	3.6	$48.57
10/31/2022	54,690,000 shares	$2.55 billion	-12.5%	N/A	2.7	$46.55
10/15/2022	62,510,000 shares	$2.68 billion	+3.5%	N/A	3.2	$42.86
9/30/2022	60,370,000 shares	$2.64 billion	-5.5%	N/A	3.3	$43.76
9/15/2022	63,890,000 shares	$2.94 billion	+2.7%	N/A	3.6	$45.94
8/31/2022	62,200,000 shares	$2.81 billion	-8.5%	N/A	3.3	$45.23
8/15/2022	67,940,000 shares	$3.38 billion	+13.4%	N/A	3.4	$49.75
7/31/2022	59,900,000 shares	$3.03 billion	-11.1%	N/A	2.9	$50.51
7/15/2022	67,350,000 shares	$3.49 billion	-2.3%	N/A	3	$51.75
6/30/2022	68,930,000 shares	$3.61 billion	-10.5%	N/A	2.9	$52.43
6/15/2022	76,980,000 shares	$3.73 billion	-0.3%	N/A	3.1	$48.51
5/31/2022	77,200,000 shares	$4.09 billion	+33.9%	N/A	2.9	$53.04
5/15/2022	57,670,000 shares	$2.88 billion	-15.2%	N/A	2.1	$49.92
4/30/2022	67,990,000 shares	$3.34 billion	+8.5%	N/A	2.3	$49.07
4/15/2022	62,650,000 shares	$3.33 billion	+1.8%	N/A	2	$53.12
3/31/2022	61,560,000 shares	$3.19 billion	+0.6%	N/A	1.9	$51.77
3/15/2022	61,180,000 shares	$3.19 billion	-6.8%	N/A	1.7	$52.21
2/28/2022	65,640,000 shares	$3.08 billion	+3.8%	N/A	1.7	$46.94
2/15/2022	63,260,000 shares	$3.15 billion	-8.6%	N/A	1.5	$49.79
1/31/2022	69,220,000 shares	$3.65 billion	+8.0%	N/A	1.6	$52.69
1/15/2022	64,080,000 shares	$3.52 billion	+9.3%	N/A	1.5	$54.95

12/31/2021	58,640,000 shares	$3.46 billion	-11.2%	N/A	1.4	$59.05
12/15/2021	66,010,000 shares	$3.88 billion	+3.9%	N/A	1.7	$58.80
11/30/2021	63,560,000 shares	$3.42 billion	+0.0%	N/A	1.9	$53.73
11/15/2021	63,540,000 shares	$3.15 billion	+7.9%	N/A	2.1	$49.65
10/29/2021	58,880,000 shares	$2.58 billion	+8.1%	N/A	1.7	$43.74
10/15/2021	54,480,000 shares	$2.26 billion	+4.4%	N/A	1.7	$41.49
9/30/2021	52,180,000 shares	$2.24 billion	-3.5%	N/A	1.6	$43.01
9/15/2021	54,090,000 shares	$2.42 billion	-7.8%	N/A	1.7	$44.77
8/31/2021	58,670,000 shares	$2.70 billion	-4.5%	N/A	1.9	$46.07
8/13/2021	61,420,000 shares	$2.98 billion	+12.7%	N/A	2.1	$48.48
7/30/2021	54,500,000 shares	$2.33 billion	-11.0%	1.0%	2.1	$42.81
7/15/2021	61,240,000 shares	$2.46 billion	-3.0%	N/A	2.5	$40.09
6/30/2021	63,150,000 shares	$2.47 billion	+5.7%	N/A	2.4	$39.16
6/15/2021	59,770,000 shares	$2.37 billion	+1.3%	N/A	2.2	$39.59
5/28/2021	59,000,000 shares	$2.29 billion	+2.9%	N/A	2.2	$38.73
5/14/2021	57,320,000 shares	$2.30 billion	-1.2%	N/A	2	$40.10
4/30/2021	58,020,000 shares	$2.24 billion	-4.7%	N/A	1.9	$38.60
4/15/2021	60,890,000 shares	$2.26 billion	-7.6%	N/A	1.9	$37.17
3/31/2021	65,930,000 shares	$2.38 billion	-3.5%	N/A	2	$36.11
3/15/2021	68,320,000 shares	$2.39 billion	+1.0%	N/A	2	$34.94
2/26/2021	67,650,000 shares	$2.29 billion	+7.2%	N/A	1.7	$33.82
2/12/2021	63,120,000 shares	$2.17 billion	+0.0%	N/A	1.5	$34.43
1/29/2021	63,110,000 shares	$2.26 billion	-3.6%	N/A	1.3	$35.86
1/15/2021	65,480,000 shares	$2.41 billion	+0.3%	N/A	1.4	$36.75
12/31/2020	65,270,000 shares	$2.40 billion	+3.4%	N/A	1.5	$36.74
12/15/2020	63,140,000 shares	$2.48 billion	-0.9%	N/A	1.5	$39.21
11/30/2020	63,680,000 shares	$2.37 billion	-4.3%	N/A	1.7	$37.23
11/15/2020	66,530,000 shares	$2.57 billion	+44.9%	N/A	2.1	$38.62
10/30/2020	45,930,000 shares	$1.62 billion	+13.6%	N/A	1.7	$35.28

PFE Short Interest - Frequently Asked Questions

What is Pfizer's current short interest?: Short interest is the volume of Pfizer shares that have been sold short but have not yet been closed out or covered. As of September 30th, traders have sold 113,950,000 shares of PFE short. Learn More on Pfizer's current short interest.
What is a good short interest ratio for Pfizer?: 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. PFE shares currently have a short interest ratio of 2.0. Learn More on Pfizer's short interest ratio.
Which institutional investors are shorting Pfizer?: As of the most recent reporting period, the following institutional investors, funds, and major shareholders have reported short positions of Pfizer: Hudson Bay Capital Management LP, Nomura Holdings Inc., National Bank of Canada FI, Man Group plc, LMR Partners LLP, Hudson Bay Capital Management LP, Group One Trading LLC, BNP Paribas Financial Markets, Balyasny Asset Management L.P., Bank of America Corp DE, Jane Street Group LLC, Volterra Technologies LP, Squarepoint Ops LLC, Alphadyne Asset Management LP, Qube Research & Technologies Ltd, Maven Securities LTD, Bank of Nova Scotia, Capital Markets Trading UK LLP, CMT Capital Markets Trading GmbH, Capula Management Ltd, Walleye Capital LLC, Walleye Trading LLC, Groupe la Francaise, Capital Fund Management S.A., Jefferies Financial Group Inc., Eisler Capital Management Ltd., JPMorgan Chase & Co., Wernau Asset Management Inc., Citigroup Inc., SG Americas Securities LLC, Garda Capital Partners LP, Marathon Trading Investment Management LLC, Credit Industriel ET Commercial, Mirae Asset Securities USA Inc., Wolverine Asset Management LLC, Allianz Asset Management GmbH, Twin Tree Management LP, Credit Industriel ET Commercial, Total Wealth Planning & Management Inc., DAVENPORT & Co LLC, and IMC Chicago LLC. These positions are disclosed in Form 13F filings with the Securities and Exchange Commission.
Is Pfizer's short interest increasing or decreasing?: Pfizer saw a increase in short interest in the month of September. As of September 30th, there was short interest totaling 113,950,000 shares, an increase of 0.9% from the previous total of 112,930,000 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 Pfizer's short interest compare to its competitors?: Here is how the short interest of companies in the sector of "medical" compare to Pfizer: Amgen Inc. (2.40%), Gilead Sciences, Inc. (1.45%), Moderna, Inc. (18.66%), Novavax, Inc. (26.75%), Viatris Inc. (2.70%), AbbVie Inc. (0.93%), Bristol Myers Squibb Company (1.30%), Johnson & Johnson (0.75%), Eli Lilly and Company (0.91%), Merck & Co., Inc. (1.01%),
Which stocks are the most shorted right now?: As of the most recent reporting period, the following stocks had the largest short interest positions: AppLovin Corporation ($15.71 billion), Robinhood Markets, Inc. ($7.56 billion), Reddit Inc. ($4.55 billion), Coinbase Global, Inc. ($4.53 billion), CoreWeave Inc. ($4.43 billion), Charter Communications, Inc. ($4.07 billion), Seagate Technology Holdings PLC ($3.94 billion), IonQ, Inc. ($3.78 billion), TC Energy Corporation ($3.13 billion), and Live Nation Entertainment, Inc. ($3.12 billion). View all of the most shorted stocks.
What does it mean to sell short Pfizer stock?: Short selling PFE is an investing strategy that aims to generate trading profit from Pfizer as its price is falling. PFE shares are trading up $0.29 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 Pfizer?: A short squeeze for Pfizer 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 PFE, which in turn drives the price of the stock up even further.
How often is Pfizer'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 PFE, twice per month. The most recent reporting period available is September, 30 2025.

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This page (NYSE:PFE) was last updated on 10/19/2025 by MarketBeat.com Staff

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Pfizer (PFE) Short Interest Ratio & Short Volume

Pfizer Short Interest Data

PFE Short Interest Over Time

PFE Days to Cover Over Time

PFE Percentage of Float Shorted Over Time

Pfizer Short Interest History

PFE Short Interest - Frequently Asked Questions

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Pfizer (PFE) Short Interest Ratio & Short Volume

Pfizer Short Interest Data

PFE Short Interest Over Time

PFE Days to Cover Over Time

PFE Percentage of Float Shorted Over Time

Pfizer Short Interest History

PFE Short Interest - Frequently Asked Questions

More Short Interest Resources from MarketBeat

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