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Stock research / United States / PLUG / Short interest

Plug Power Inc. short interest

292.0M shares of Plug Power were sold short at the 15 October 2026 settlement, near the bottom of its range over the last year (284.6M to 348.4M). Short sellers would need 5.7 days of normal trading to buy them back.

Shares sold short292.0Mat 15 Oct 2026
Change on the settlement before+2.6%-12% over a year
Days to cover5.73at 50.9M shares a day
Of shares in issue20.90%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 near the bottom of its range over the last year (284.6M to 348.4M), and the share price moved -64% 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 2026292.0M+2.6%50.9M5.73
    30 September 2026284.6M-0.9%48.7M5.84
    15 September 2026287.3M-1.3%47.2M6.09
    31 August 2026291.0M+0.0%56.1M5.19
    14 August 2026290.9M-1.1%72.0M4.04
    31 July 2026294.0M-10.9%49.0M6.00
    15 July 2026330.1M-3.1%47.8M6.91
    30 June 2026340.7M+0.3%56.5M6.03
    15 June 2026339.6M-2.2%58.4M5.82
    29 May 2026347.3M+1.9%83.9M4.14
    15 May 2026340.7M-0.8%95.9M3.55
    30 April 2026343.5M-0.3%77.7M4.42
    15 April 2026344.6M+1.4%71.8M4.80
    31 March 2026339.7M+3.2%64.6M5.26
    13 March 2026329.1M+0.5%97.9M3.36
    27 February 2026327.3M-5.6%81.0M4.04
    13 February 2026346.6M-0.5%97.2M3.56
    30 January 2026348.4M+2.4%120.9M2.88
    15 January 2026340.2M-2.3%95.1M3.58
    31 December 2025348.1M+1.5%84.9M4.10
    15 December 2025343.0M+2.1%101.4M3.38
    28 November 2025336.1M+10.2%111.6M3.01
    14 November 2025305.1M-1.8%121.2M2.52
    31 October 2025310.6M-6.3%104.9M2.96
    15 October 2025331.4M-13.7%224.8M1.47
    30 September 2025383.8M+6.9%152.4M2.52
    15 September 2025358.8M+2.8%38.7M9.26
    29 August 2025349.1M+2.2%39.5M8.83
    15 August 2025341.5M+6.7%46.1M7.40
    31 July 2025320.2M+7.8%73.4M4.36
    15 July 2025297.0M+1.4%86.2M3.44
    30 June 2025292.9M+23.0%87.4M3.35
    13 June 2025238.1M+5.6%131.8M1.81
    30 May 2025225.6M-14.9%176.0M1.28
    15 May 2025265.1M+4.9%138.4M1.92
    30 April 2025252.7M-4.2%128.7M1.96
    15 April 2025263.6M-5.7%49.4M5.33
    31 March 2025279.7M-0.9%58.3M4.79
    14 March 2025282.3M-0.0%68.8M4.10
    28 February 2025282.4M-1.4%56.9M4.96
    14 February 2025286.4M+11.8%53.9M5.31
    31 January 2025256.1M+7.4%76.3M3.36
    15 January 2025238.5M+16.4%81.2M2.94
    31 December 2024204.9M-3.7%49.3M4.16
    13 December 2024212.7M+8.9%77.4M2.75
    29 November 2024195.3M-9.7%57.4M3.40
    15 November 2024216.2M-3.6%74.6M2.90
    31 October 2024224.2M-8.0%42.4M5.28
    15 October 2024243.8M-3.6%34.2M7.13
    30 September 2024253.0M-1.6%46.5M5.44
    13 September 2024257.0M+2.9%31.0M8.29
    30 August 2024249.8M+8.8%29.4M8.50
    15 August 2024229.5M+2.1%39.5M5.81
    31 July 2024224.7M+1.2%44.9M5.00
    15 July 2024222.0M+8.2%35.7M6.22
    28 June 2024205.2M+8.9%37.3M5.50
    14 June 2024188.4M+1.8%29.3M6.44
    31 May 2024185.1M-3.7%30.8M6.01
    15 May 2024192.3M+0.5%57.6M3.34
    30 April 2024191.3M+3.2%26.9M7.11
    15 April 2024185.4M+0.9%24.3M7.64
    28 March 2024183.8M+6.7%26.1M7.05
    15 March 2024172.2M+7.7%38.0M4.53
    29 February 2024159.8M-6.4%41.9M3.81
    15 February 2024170.8M-7.1%47.7M3.58
    31 January 2024183.9M+16.1%72.5M2.54
    12 January 2024158.3M-2.0%31.7M5.00
    29 December 2023161.5M+1.9%27.6M5.85
    15 December 2023158.4M+2.0%39.6M4.00
    30 November 2023155.4M+4.0%33.8M4.60
    15 November 2023149.5M+3.3%55.3M2.70
    31 October 2023144.6M+3.7%23.0M6.29
    13 October 2023139.4M+9.1%29.9M4.67
    29 September 2023127.8M-4.4%15.8M8.12
    15 September 2023133.8M+10.8%14.3M9.37
    31 August 2023120.7M+1.6%16.9M7.13
    15 August 2023118.8M+6.3%23.9M4.98
    31 July 2023111.8M-12.1%23.1M4.83
    14 July 2023127.1M+5.2%32.2M3.95
    30 June 2023120.9M+4.6%20.8M5.80
    15 June 2023115.5M-3.8%30.2M3.83
    31 May 2023120.1M+2.9%26.8M4.48
    15 May 2023116.7M+10.1%21.1M5.53
    28 April 2023106.0M+5.4%20.4M5.18
    14 April 2023100.6M+8.4%26.4M3.80
    31 March 202392.8M+5.3%18.2M5.09
    15 March 202388.1M+9.2%19.5M4.53
    28 February 202380.7M-0.1%12.5M6.43
    15 February 202380.8M-1.7%16.4M4.93
    31 January 202382.2M+7.8%20.2M4.07
    13 January 202376.2M-10.5%17.7M4.30
    30 December 202285.2M+3.0%14.7M5.81
    15 December 202282.7M+5.9%16.1M5.14
    30 November 202278.1M+6.3%13.9M5.60
    15 November 202273.5M+2.0%20.2M3.65
    31 October 202272.0M+15.4%19.1M3.77
    14 October 202262.4M-0.4%16.8M3.72
    30 September 202262.7M+3.8%15.8M3.96
    15 September 202260.3M-6.6%18.3M3.30
    31 August 202264.6M-0.5%23.4M2.76
    15 August 202264.9M-7.7%27.1M2.39
    29 July 202270.3M+6.7%23.7M2.97
    15 July 202265.9M+0.8%19.5M3.38
    30 June 202265.4M+2.0%18.9M3.46
    15 June 202264.1M-2.2%20.1M3.20
    31 May 202265.6M+1.5%26.0M2.52
    13 May 202264.6M-4.3%25.9M2.50
    29 April 202267.6M+6.8%23.1M2.93
    14 April 202263.3M-3.3%17.4M3.64
    31 March 202265.5M-5.4%19.2M3.42
    15 March 202269.2M+3.2%23.7M2.92
    28 February 202267.0M-4.2%19.8M3.39
    15 February 202270.0M+1.1%18.6M3.77
    31 January 202269.2M+11.6%30.0M2.31
    14 January 202262.0M+10.6%17.6M3.51
    31 December 202156.1M+8.7%16.1M3.48
    15 December 202151.6M+4.2%18.5M2.79
    30 November 202149.5M+2.0%19.8M2.50
    15 November 202148.6M-10.7%28.0M1.73
    29 October 202154.3M-8.3%26.9M2.02
    15 October 202159.3M+11.7%29.7M1.99
    30 September 202153.0M-2.6%17.0M3.12
    15 September 202154.5M+0.7%15.1M3.60
    31 August 202154.1M+7.2%16.8M3.21
    13 August 202150.4M+4.9%21.9M2.30
    30 July 202148.1M+10.6%14.9M3.23
    15 July 202143.5M+4.9%19.5M2.23
    30 June 202141.5M-16.5%36.9M1.12
    15 June 202149.7M-7.4%24.5M2.03
    28 May 202153.6M-1.8%34.4M1.56
    14 May 202154.6M+6.1%38.0M1.44
    30 April 202151.4M+7.5%34.2M1.50
    15 April 202147.8M+9.3%27.8M1.72
    31 March 202143.8M+0.2%36.8M1.19
    15 March 202143.7M+12.3%28.9M1.51
    26 February 202138.9M+5.4%30.5M1.27
    12 February 202136.9M-10.8%19.1M1.93
    29 January 202141.3M-34.2%49.2M1.00
    15 January 202162.8M-1.1%69.1M1.00
    31 December 202063.5M+0.2%32.4M1.96
    15 December 202063.4M-4.7%25.4M2.49
    30 November 202066.5M-8.3%38.0M1.75
    13 November 202072.5M+10.2%40.6M1.79
    30 October 202065.8M-8.8%19.8M3.32
    15 October 202072.2M+16.6%32.4M2.23
    30 September 202061.9M+4.0%20.9M2.97
    15 September 202059.5M+9.6%21.9M2.71
    31 August 202054.3M+4.4%28.4M1.91
    14 August 202052.0M-0.2%33.3M1.56
    31 July 202052.1M-10.8%15.5M3.37
    15 July 202058.4M-18.9%34.1M1.71
    30 June 202072.0M-0.1%29.3M2.46
    15 June 202072.1M+3.0%18.0M3.99
    29 May 202070.0M-2.2%8.5M8.27
    15 May 202071.6M+2.2%9.1M7.83
    30 April 202070.1M+0.7%8.1M8.62
    15 April 202069.6M+2.5%9.8M7.11
    31 March 202067.9M-6.4%14.8M4.60
    13 March 202072.6M+8.3%18.0M4.04
    28 February 202067.0M+17.9%34.5M1.94
    14 February 202056.8M+0.8%8.6M6.63
    31 January 202056.3M+1.1%11.7M4.83
    15 January 202055.8M+22.4%18.4M3.02
    31 December 201945.6M-2.3%8.4M5.41
    13 December 201946.6M-7.8%13.0M3.60
    29 November 201950.6M-0.8%11.3M4.46
    15 November 201951.0M+16.2%9.8M5.22
    31 October 201943.9M-0.1%6.2M7.09
    15 October 201944.0M-4.6%3.5M12.62
    30 September 201946.1M+7.9%5.5M8.34
    13 September 201942.7M+0.9%3.6M11.90
    30 August 201942.3M-5.3%1.8M23.09
    15 August 201944.7M-3.5%3.3M13.55
    31 July 201946.3M-8.7%2.4M19.24
    15 July 201950.7M+0.7%2.7M18.87
    28 June 201950.4M+2.2%4.7M10.63
    14 June 201949.3M-1.7%3.1M15.72
    31 May 201950.1M+8.9%4.9M10.17
    15 May 201946.0M-0.6%3.8M12.19
    30 April 201946.3M+2.5%3.4M13.65
    15 April 201945.2M+12.4%6.0M7.50
    29 March 201940.2M+4.3%6.3M6.36
    15 March 201938.5M-4.8%8.3M4.63
    28 February 201940.5M+3.7%3.1M12.92
    15 February 201939.0M+0.6%2.7M14.69
    31 January 201938.8M-2.4%1.9M20.11
    15 January 201939.7M+9.5%4.8M8.27
    31 December 201836.3M+6.0%5.2M7.04
    14 December 201834.2M-0.1%2.3M14.75
    30 November 201834.3M+1.3%1.4M25.15
    15 November 201833.8M-3.7%1.8M18.86
    31 October 201835.1M-4.1%2.3M14.98
    15 October 201836.6M+8.4%2.2M17.00
    28 September 201833.7M-6.2%2.6M13.22
    14 September 201836.0M+6.2%2.9M12.36
    31 August 201833.9M+0.1%2.9M11.80
    15 August 201833.9M+3.7%2.2M15.71
    31 July 201832.6M+7.0%2.0M15.98
    13 July 201830.5M-12.4%2.8M10.99
    29 June 201834.8M-7.5%2.9M12.18
    15 June 201837.6M+3.1%3.3M11.51
    31 May 201836.5M-0.2%4.4M8.28
    15 May 201836.6M+6.2%5.2M7.06
    30 April 201834.4M-0.2%3.3M10.29
    13 April 201834.5M-0.2%3.3M10.34
    29 March 201834.5M+0.4%4.0M8.69
    15 March 201834.4M+1.9%3.7M9.41
    28 February 201833.7M+1.4%3.9M8.58
    15 February 201833.3M+8.5%4.3M7.74
    31 January 201830.7M-2.8%3.0M10.33
    12 January 201831.5M-4.1%3.3M9.70
    29 December 201732.9M3.0M11.10
    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.