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Stock research / United States / PFE / Short interest

Pfizer Inc. short interest

137.8M shares of Pfizer were sold short at the 15 October 2026 settlement, the fewest since 15 Apr 2026. Short sellers would need 4.5 days of normal trading to buy them back.

Shares sold short137.8Mat 15 Oct 2026
Change on the settlement before-8.3%+18% over a year
Days to cover4.47at 30.8M shares a day
Of shares in issue2.42%shares short over shares outstanding
New to this? How to read this page
  1. Short interest is the number of shares investors have borrowed and sold, betting the price will fall, and not yet bought back.
  2. Days to cover is shares short over an average day's trading: how many days it would take short sellers to buy them all back. Above 5 or so is high.
  3. Rising short interest says more investors are betting against the stock. A crowded short can also rise fast if shorts rush to buy back.
  4. Brokers report it twice a month to FINRA, about ten days after each settlement date.
  5. What is short interest?

Short interest, days to cover and the price

Short interest is the fewest since 15 Apr 2026, and the share price moved +20% over the last year.

Shares sold shortDays to coverShare price

Three charts on one timeline. Top: shares sold short at each settlement. Middle: days to cover, taller meaning shorts would need longer to buy back. Bottom: the share price, so you can see whether shorts added as the price fell or rose.

How it compares

every company on the site

    The bar ranks every company on the site from the lowest on the left to the highest on the right, in three equal thirds; the small figures under it are the values where each third starts, and the black tick is the middle company. The orange dot is this company; the grey ticks are the other companies in its industry (hover or tap for names). A hatched block is companies tied at none.

    Every settlement since 29 Dec 2017 as a table
    SettlementShares shortChangeAverage daily volumeDays to cover
    15 October 2026137.8M-8.3%30.8M4.47
    30 September 2026150.2M-3.2%34.0M4.41
    15 September 2026155.2M+2.4%31.7M4.90
    31 August 2026151.5M+1.5%35.0M4.33
    14 August 2026149.3M-7.6%42.3M3.53
    31 July 2026161.5M-1.4%38.6M4.18
    15 July 2026163.8M+0.1%42.8M3.83
    30 June 2026163.6M+0.9%60.9M2.69
    15 June 2026162.1M-0.4%35.2M4.60
    29 May 2026162.7M+3.3%32.8M4.96
    15 May 2026157.5M+12.2%38.2M4.12
    30 April 2026140.3M+5.2%35.0M4.01
    15 April 2026133.4M+0.7%33.4M3.99
    31 March 2026132.5M+0.8%43.0M3.08
    13 March 2026131.4M-8.0%40.5M3.25
    27 February 2026142.8M-2.4%35.1M4.07
    13 February 2026146.4M+2.3%58.1M2.52
    30 January 2026143.0M+10.2%51.5M2.78
    15 January 2026129.8M-0.2%47.5M2.73
    31 December 2025130.0M-6.8%47.5M2.74
    15 December 2025139.5M+0.3%46.9M2.97
    28 November 2025139.1M+6.4%55.5M2.50
    14 November 2025130.7M+3.2%126.0M1.04
    31 October 2025126.6M+8.4%59.3M2.13
    15 October 2025116.8M+2.5%63.5M1.84
    30 September 2025114.0M+0.9%60.5M1.88
    15 September 2025112.9M+9.2%43.6M2.59
    29 August 2025103.5M-9.1%36.4M2.84
    15 August 2025113.8M+5.6%49.7M2.29
    31 July 2025107.8M+8.6%40.1M2.69
    15 July 202599.3M-11.3%40.2M2.47
    30 June 2025111.9M+4.9%38.4M2.92
    13 June 2025106.7M+1.7%36.7M2.91
    30 May 2025105.0M-2.2%39.9M2.63
    15 May 2025107.4M-6.8%51.2M2.10
    30 April 2025115.2M+7.2%49.0M2.35
    15 April 2025107.4M+10.2%66.0M1.63
    31 March 202597.5M-1.7%69.6M1.40
    14 March 202599.2M+4.4%44.6M2.22
    28 February 202595.0M+6.6%40.8M2.33
    14 February 202589.1M+21.1%42.2M2.11
    31 January 202573.6M-19.8%37.7M1.95
    15 January 202591.8M+21.2%33.7M2.72
    31 December 202475.7M-11.3%46.1M1.64
    13 December 202485.4M-5.6%39.9M2.14
    29 November 202490.4M-4.4%43.4M2.08
    15 November 202494.5M+52.8%57.7M1.64
    31 October 202461.9M-12.8%36.2M1.71
    15 October 202470.9M+4.9%32.0M2.22
    30 September 202467.6M-9.6%29.2M2.31
    13 September 202474.8M+14.5%31.0M2.42
    30 August 202465.4M+5.9%24.2M2.71
    15 August 202461.7M-5.5%31.6M1.95
    31 July 202465.3M+17.3%41.8M1.56
    15 July 202455.7M-7.0%27.9M1.99
    28 June 202459.9M-3.5%33.1M1.81
    14 June 202462.1M-18.3%33.7M1.84
    31 May 202476.0M+8.2%35.1M2.16
    15 May 202470.2M+12.3%51.6M1.36
    30 April 202462.5M-8.2%36.8M1.70
    15 April 202468.1M+4.7%36.7M1.86
    28 March 202465.0M-9.3%33.6M1.94
    15 March 202471.7M+8.4%57.9M1.24
    29 February 202466.1M+9.0%37.0M1.79
    15 February 202460.7M+0.8%39.1M1.55
    31 January 202460.2M+4.5%50.4M1.19
    12 January 202457.6M+1.0%40.9M1.41
    29 December 202357.0M-7.8%44.6M1.28
    15 December 202361.9M+8.7%70.6M1.00
    30 November 202356.9M-1.0%26.9M2.11
    15 November 202357.5M+21.9%30.7M1.87
    31 October 202347.2M-13.5%35.2M1.34
    13 October 202354.6M+6.8%26.0M2.10
    29 September 202351.1M+2.3%27.8M1.83
    15 September 202349.9M-1.0%27.6M1.81
    31 August 202350.5M-3.7%21.7M2.32
    15 August 202352.4M+14.2%25.1M2.08
    31 July 202345.9M-12.9%23.7M1.94
    14 July 202352.7M-11.5%20.2M2.61
    30 June 202359.5M+8.0%32.3M1.85
    15 June 202355.1M-1.2%21.8M2.52
    31 May 202355.8M+21.5%39.2M1.42
    15 May 202345.9M+4.7%22.5M2.04
    28 April 202343.9M+6.0%20.1M2.19
    14 April 202341.4M-15.7%20.8M1.99
    31 March 202349.1M+11.2%21.1M2.33
    15 March 202344.1M+14.7%22.8M1.94
    28 February 202338.5M+1.2%20.8M1.85
    15 February 202338.0M-2.9%21.6M1.76
    31 January 202339.2M+5.4%28.2M1.39
    13 January 202337.2M-12.6%23.6M1.58
    30 December 202242.5M-26.7%17.5M2.43
    15 December 202258.0M-7.7%22.6M2.57
    30 November 202262.8M-10.3%17.2M3.66
    15 November 202270.0M+28.1%22.5M3.11
    31 October 202254.7M-12.5%23.7M2.31
    14 October 202262.5M+3.5%20.7M3.02
    30 September 202260.4M-5.5%19.1M3.16
    15 September 202263.9M+2.7%16.6M3.84
    31 August 202262.2M-8.4%16.1M3.86
    15 August 202267.9M+13.4%19.9M3.42
    29 July 202259.9M-11.1%18.1M3.31
    15 July 202267.4M-2.3%15.9M4.22
    30 June 202268.9M-10.5%23.0M3.00
    15 June 202277.0M-0.3%19.9M3.86
    31 May 202277.2M+33.9%27.1M2.84
    13 May 202257.7M-15.2%28.5M2.03
    29 April 202268.0M+8.5%25.2M2.70
    14 April 202262.6M+1.8%23.1M2.71
    31 March 202261.6M+0.6%30.5M2.02
    15 March 202261.2M-6.8%32.0M1.91
    28 February 202265.6M+3.8%30.9M2.12
    15 February 202263.3M-8.6%35.2M1.80
    31 January 202269.2M+8.0%38.6M1.79
    14 January 202264.1M+9.3%39.2M1.63
    31 December 202158.6M-11.2%49.5M1.18
    15 December 202166.0M+3.9%47.2M1.40
    30 November 202163.6M+0.0%42.4M1.50
    15 November 202163.5M+7.9%53.3M1.19
    29 October 202158.9M+8.1%22.4M2.63
    15 October 202154.5M+4.4%22.5M2.42
    30 September 202152.2M-3.5%26.4M1.98
    15 September 202154.1M-7.8%25.4M2.13
    31 August 202158.7M-4.5%50.3M1.17
    13 August 202161.4M+12.7%40.6M1.51
    30 July 202154.5M-11.0%30.4M1.79
    15 July 202161.2M-3.0%19.1M3.21
    30 June 202163.1M+5.6%20.5M3.08
    15 June 202159.8M+1.3%23.7M2.52
    28 May 202159.0M+2.9%20.3M2.90
    14 May 202157.3M-1.2%35.6M1.61
    30 April 202158.0M-4.7%25.6M2.27
    15 April 202160.9M-7.6%22.4M2.72
    31 March 202165.9M-3.5%26.9M2.45
    15 March 202168.3M+1.0%27.6M2.47
    26 February 202167.6M+7.2%27.5M2.46
    12 February 202163.1M+0.0%35.1M1.80
    29 January 202163.1M-3.6%30.9M2.04
    15 January 202165.5M+0.3%31.6M2.07
    31 December 202065.3M+3.4%33.6M1.94
    15 December 202063.1M-0.8%63.2M1.00
    30 November 202063.7M-4.3%42.4M1.50
    13 November 202066.5M+44.9%52.9M1.26
    30 October 202045.9M+13.6%25.7M1.79
    15 October 202040.4M-10.5%18.6M2.18
    30 September 202045.2M+5.6%17.9M2.52
    15 September 202042.8M-5.4%24.4M1.75
    31 August 202045.2M-10.0%19.1M2.36
    14 August 202050.2M-6.1%19.5M2.57
    31 July 202053.5M+12.7%34.8M1.54
    15 July 202047.5M-7.8%31.3M1.52
    30 June 202051.5M-4.2%29.7M1.73
    15 June 202053.7M+3.3%34.9M1.54
    29 May 202052.0M-1.1%17.4M3.00
    15 May 202052.6M+7.4%20.4M2.58
    30 April 202049.0M+10.5%20.3M2.42
    15 April 202044.3M-4.6%23.5M1.88
    31 March 202046.4M-21.4%40.7M1.14
    13 March 202059.1M+10.1%39.4M1.50
    28 February 202053.7M-8.5%38.0M1.41
    14 February 202058.7M-3.9%19.5M3.01
    31 January 202061.0M+7.1%26.8M2.28
    15 January 202057.0M-0.3%15.5M3.67
    31 December 201957.1M-2.9%18.6M3.07
    13 December 201958.8M+1.5%13.4M4.40
    29 November 201958.0M+12.2%21.7M2.67
    15 November 201951.7M+4.1%20.7M2.49
    31 October 201949.6M+1.2%18.0M2.75
    15 October 201949.0M+2.5%15.5M3.16
    30 September 201947.8M-18.3%20.7M2.31
    13 September 201958.5M-0.6%21.6M2.71
    30 August 201958.9M+6.6%20.9M2.81
    15 August 201955.2M-18.7%34.1M1.62
    31 July 201968.0M+17.7%29.9M2.27
    15 July 201957.7M+1.3%20.1M2.87
    28 June 201957.0M-10.7%26.2M2.17
    14 June 201963.8M-8.0%17.6M3.63
    31 May 201969.4M+4.3%25.0M2.77
    15 May 201966.5M+39.8%22.7M2.94
    30 April 201947.6M-26.9%28.0M1.70
    15 April 201965.0M-18.6%16.5M3.95
    29 March 201979.9M-22.8%20.1M3.98
    15 March 2019103.5M-25.1%29.6M3.50
    28 February 2019138.2M-11.4%22.9M6.02
    15 February 2019156.0M+264.8%22.2M7.02
    31 January 201942.8M-8.8%33.2M1.29
    15 January 201946.9M-5.8%23.4M2.00
    31 December 201849.7M-16.6%30.7M1.62
    14 December 201859.6M+18.4%25.6M2.33
    30 November 201850.3M+6.3%21.9M2.30
    15 November 201847.4M+1.7%23.9M1.98
    31 October 201846.6M-7.5%26.1M1.78
    15 October 201850.4M+0.9%23.7M2.13
    28 September 201849.9M-1.4%18.9M2.64
    14 September 201850.6M+4.3%18.0M2.81
    31 August 201848.5M-7.1%18.8M2.57
    15 August 201852.2M-4.5%22.6M2.31
    31 July 201854.7M-5.2%20.7M2.64
    13 July 201857.6M-2.6%17.0M3.40
    29 June 201859.2M-8.5%21.0M2.81
    15 June 201864.7M+4.8%20.4M3.17
    31 May 201861.7M-3.1%19.3M3.19
    15 May 201863.7M-2.7%24.8M2.57
    30 April 201865.4M-19.2%19.9M3.29
    13 April 201881.0M-17.6%20.6M3.94
    29 March 201898.3M-31.2%23.7M4.15
    15 March 2018142.9M+131.1%22.2M6.44
    28 February 201861.8M-3.6%23.7M2.61
    15 February 201864.1M+12.6%33.5M1.92
    31 January 201857.0M+9.2%28.2M2.02
    12 January 201852.2M+4.5%15.6M3.34
    29 December 201749.9M11.8M4.22
    Shares in millions (M) or thousands (K); hold the pointer on a figure for the exact count. FINRA publishes consolidated short interest twice a month, about ten days after each settlement.