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Stock research / United States / GOSS / Short interest

Gossamer Bio, Inc. short interest

1.4M shares of Gossamer Bio were sold short at the 15 October 2026 settlement, near the bottom of its range over the last year (949K to 95.0M). Short sellers would need 5.1 days of normal trading to buy them back.

Shares sold short1.4Mat 15 Oct 2026
Change on the settlement before+16.0%-95% over a year
Days to cover5.12at 280K shares a day
Of shares in issue0.29%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 (949K to 95.0M), and the share price moved -95% 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 15 Feb 2019 as a table
    SettlementShares shortChangeAverage daily volumeDays to cover
    15 October 20261.4M+16.0%280K5.12
    30 September 20261.2M+30.5%353K3.50
    15 September 2026949K-98.9%187K5.07
    31 August 202682.6M-4.8%29.6M2.79
    14 August 202686.8M-8.6%11.8M7.37
    31 July 202695.0M+29.8%63.6M1.49
    15 July 202673.2M+36.3%19.3M3.79
    30 June 202653.7M-4.5%16.7M3.22
    15 June 202656.2M-10.5%16.5M3.41
    29 May 202662.8M+53.8%22.1M2.84
    15 May 202640.8M+2.0%3.6M11.48
    30 April 202640.0M-0.4%5.2M7.65
    15 April 202640.2M+7.2%8.3M4.85
    31 March 202637.5M+2.4%13.6M2.75
    13 March 202636.6M+5.5%13.6M2.70
    27 February 202634.7M+11.7%45.0M1.00
    13 February 202631.1M+16.1%6.1M5.10
    30 January 202626.8M+6.2%4.7M5.68
    15 January 202625.2M+4.6%4.6M5.43
    31 December 202524.1M+18.7%5.2M4.66
    15 December 202520.3M-13.3%3.5M5.73
    28 November 202523.4M-4.0%2.9M8.22
    14 November 202524.4M-2.0%2.6M9.45
    31 October 202524.9M-6.9%3.1M8.01
    15 October 202526.8M-2.3%3.2M8.24
    30 September 202527.4M+14.2%4.3M6.44
    15 September 202524.0M+8.8%5.7M4.23
    29 August 202522.0M+7.5%3.1M7.14
    15 August 202520.5M+9.4%3.0M6.81
    31 July 202518.7M+3.4%3.6M5.16
    15 July 202518.1M+7.2%1.6M11.65
    30 June 202516.9M+52.6%3.9M4.31
    13 June 202511.1M-0.1%1.3M8.66
    30 May 202511.1M+5.1%1.7M6.64
    15 May 202510.5M+4.7%1.5M7.24
    30 April 202510.1M+9.8%1.7M5.90
    15 April 20259.2M+15.0%1.6M5.68
    31 March 20258.0M+38.9%1.5M5.43
    14 March 20255.7M+2.7%1.5M3.90
    28 February 20255.6M-2.3%1.9M2.90
    14 February 20255.7M-1.6%2.0M2.91
    31 January 20255.8M-7.1%656K8.86
    15 January 20256.3M+2.2%1.3M4.79
    31 December 20246.1M-12.8%976K6.27
    13 December 20247.0M+10.0%3.3M2.15
    29 November 20246.4M-2.3%1.1M5.81
    15 November 20246.5M+3.5%1.0M6.32
    31 October 20246.3M-9.3%630K10.01
    15 October 20247.0M-10.3%913K7.61
    30 September 20247.8M-9.3%893K8.68
    13 September 20248.6M-5.9%900K9.50
    30 August 20249.1M-5.2%721K12.59
    15 August 20249.6M-0.4%1.0M9.55
    31 July 20249.6M+4.7%1.4M7.03
    15 July 20249.2M-4.6%1.9M4.88
    28 June 20249.6M-3.5%6.6M1.46
    14 June 202410.0M-24.4%1.1M8.74
    31 May 202413.2M+4.9%1.1M12.08
    15 May 202412.6M-2.0%2.7M4.72
    30 April 202412.8M+15.6%1.2M11.05
    15 April 202411.1M+3.2%1.7M6.41
    28 March 202410.8M-2.9%1.3M8.46
    15 March 202411.1M-22.5%1.5M7.31
    29 February 202414.3M-6.5%1.9M7.48
    15 February 202415.3M-8.4%817K18.74
    31 January 202416.7M-3.7%524K31.91
    12 January 202417.3M-1.2%653K26.57
    29 December 202317.6M-6.7%1.5M11.80
    15 December 202318.8M-16.6%2.5M7.43
    30 November 202322.6M+1.9%1.8M12.55
    15 November 202322.2M+10.6%2.0M11.09
    31 October 202320.0M-14.6%3.0M6.66
    13 October 202323.4M-1.7%1.2M20.06
    29 September 202323.8M+18.2%1.8M13.21
    15 September 202320.2M+2.0%3.1M6.46
    31 August 202319.8M-3.3%1.5M13.39
    15 August 202320.5M+1.6%1.5M13.64
    31 July 202320.1M+37.2%4.1M4.96
    14 July 202314.7M+2.2%1.6M9.09
    30 June 202314.4M-11.6%2.9M4.92
    15 June 202316.3M+6.5%2.7M5.96
    31 May 202315.3M-3.3%2.1M7.23
    15 May 202315.8M-3.1%1.3M12.45
    28 April 202316.3M-5.0%2.2M7.30
    14 April 202317.1M+0.4%1.9M8.98
    31 March 202317.1M-30.4%6.7M2.54
    15 March 202324.5M-7.9%3.6M6.73
    28 February 202326.6M+5.5%3.3M8.11
    15 February 202325.2M-0.4%2.7M9.51
    31 January 202325.4M-6.7%3.4M7.49
    13 January 202327.2M+1.0%4.0M6.83
    30 December 202226.9M+86.6%9.9M2.71
    15 December 202214.4M-32.9%12.6M1.14
    30 November 202221.5M+12.2%2.1M10.39
    15 November 202219.1M+0.8%1.1M16.79
    31 October 202219.0M+7.4%1.6M12.22
    14 October 202217.7M+1.7%1.3M13.14
    30 September 202217.4M+4.6%1.4M12.39
    15 September 202216.6M+3.0%866K19.18
    31 August 202216.1M+4.2%730K22.09
    15 August 202215.5M+6.6%1.4M11.35
    29 July 202214.5M+7.4%1.6M9.14
    15 July 202213.5M+14.0%3.4M4.01
    30 June 202211.9M-2.0%783K15.13
    15 June 202212.1M+7.8%525K23.05
    31 May 202211.2M-2.4%646K17.37
    13 May 202211.5M+10.1%1.1M10.50
    29 April 202210.4M-9.4%1.7M6.28
    14 April 202211.5M-2.7%534K21.57
    31 March 202211.8M-1.8%547K21.65
    15 March 202212.1M-0.8%523K23.06
    28 February 202212.2M-2.2%654K18.58
    15 February 202212.4M+0.8%572K21.74
    31 January 202212.3M+9.4%993K12.42
    14 January 202211.3M+2.8%572K19.70
    31 December 202111.0M+7.9%577K18.99
    15 December 202110.2M+1.3%608K16.73
    30 November 202110.0M-0.2%380K26.42
    15 November 202110.1M+10.4%588K17.11
    29 October 20219.1M+0.8%441K20.68
    15 October 20219.0M-2.4%485K18.65
    30 September 20219.3M-4.1%776K11.95
    15 September 20219.7M-3.3%484K19.95
    31 August 202110.0M-5.2%518K19.30
    13 August 202110.5M-4.9%519K20.31
    30 July 202111.1M+8.6%393K28.25
    15 July 202110.2M+3.2%375K27.21
    30 June 20219.9M-5.9%815K12.15
    15 June 202110.5M+1.2%389K27.06
    28 May 202110.4M-0.8%518K20.09
    14 May 202110.5M-3.3%494K21.20
    30 April 202110.8M-3.2%328K33.05
    15 April 202111.2M+1.2%536K20.89
    31 March 202111.1M+32.0%646K17.10
    15 March 20218.4M+6.2%728K11.50
    26 February 20217.9M+3.0%720K10.95
    12 February 20217.7M+18.8%611K12.51
    29 January 20216.4M-14.6%560K11.50
    15 January 20217.5M-4.3%458K16.47
    31 December 20207.9M+2.6%816K9.67
    15 December 20207.7M-8.2%905K8.50
    30 November 20208.4M+4.1%382K21.90
    13 November 20208.0M-19.8%486K16.53
    30 October 202010.0M-3.8%836K12.00
    15 October 202010.4M+5.7%1.6M6.61
    30 September 20209.9M+21.0%552K17.87
    15 September 20208.1M+0.6%272K29.91
    31 August 20208.1M-0.6%258K31.39
    14 August 20208.1M+3.5%416K19.57
    31 July 20207.9M+9.4%607K12.95
    15 July 20207.2M+23.9%443K16.21
    30 June 20205.8M+1.9%676K8.59
    15 June 20205.7M-2.7%558K10.20
    29 May 20205.9M+29.4%1.6M3.68
    15 May 20204.5M-4.4%409K11.06
    30 April 20204.7M-5.9%287K16.46
    15 April 20205.0M+1.9%344K14.60
    31 March 20204.9M-2.3%458K10.76
    13 March 20205.0M-2.3%433K11.64
    28 February 20205.2M-3.0%328K15.76
    14 February 20205.3M-4.7%307K17.35
    31 January 20205.6M+14.2%431K12.95
    15 January 20204.9M+11.5%426K11.48
    31 December 20194.4M+21.1%1.3M3.47
    13 December 20193.6M-2.6%301K12.01
    29 November 20193.7M-10.2%476K7.82
    15 November 20194.1M-6.9%343K12.06
    31 October 20194.4M-9.1%681K6.53
    15 October 20194.9M-2.6%376K13.02
    30 September 20195.0M+54.4%1.2M4.21
    13 September 20193.3M+2.0%391K8.33
    30 August 20193.2M-9.7%326K9.80
    15 August 20193.5M+3.7%224K15.81
    31 July 20193.4M+38.6%250K13.65
    15 July 20192.5M+18.6%171K14.41
    28 June 20192.1M+24.1%353K5.87
    14 June 20191.7M+6.0%134K12.43
    31 May 20191.6M+15.5%138K11.42
    15 May 20191.4M-6.1%96K14.28
    30 April 20191.5M+6.7%128K11.38
    15 April 20191.4M-6.5%156K8.72
    29 March 20191.5M+68.1%149K9.78
    15 March 2019867K+76.5%489K1.77
    28 February 2019491K+55.0%453K1.08
    15 February 2019317K924K1.00
    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.