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HowShorted

GOSS short interest Nasdaq Global Market

Gossamer Bio, Inc. Common Stoc. FINRA's reported shares short for this symbol, twice a month by settlement date, shown as the regulator publishes them. No percentage is shown: an SEC filer exists but no defensible share count is available yet.

Shares short
948,623
vs previous settlement
โˆ’81,684,694 (-98.9%)
days to cover
5.07
Settlement date
15 Sep 2026

Shares short over time

Aggregate net short position time series for GOSS shares short

Days to cover

FINRA's own figure: reported shares short divided by the security's average daily trading volume, published alongside each settlement.

Aggregate net short position time series for GOSS days to cover

Fails to deliver

The SEC's fails-to-deliver figure for GOSS: the aggregate net balance of shares that failed to be delivered at each settlement date, published by the SEC twice a month and shown here verbatim for the trailing window. A balance is not a daily flow, and a fail has many ordinary causes; the SEC says it cannot guarantee the accuracy of the data. See what fails to deliver are and the largest balances today.

Latest balance
6,311
14 Sep 2026
Highest in window
18,391,665
21 Jul 2026
Days with a balance
130
Window
16 Sep 2025 to 14 Sep 2026
Aggregate net short position time series for Gossamer Bio, Inc. Common Stoc fails to deliver

Source: U.S. Securities and Exchange Commission, fails-to-deliver data (public domain). Only settlement days with a positive balance appear; the largest balance in the window was 18M shares.

History

Every FINRA settlement we hold for GOSS, newest first. สณ marks a figure FINRA itself flagged as revised.

Full reported short interest history
Settlement dateShares shortChangeDays to cover
15 Sep 2026948,623โˆ’81,684,6945.07
31 Aug 202682,633,317โˆ’4,153,1812.79
14 Aug 202686,786,498โˆ’8,199,5187.37
31 Jul 202694,986,016+21,807,1751.49
15 Jul 202673,178,841+19,482,8503.79
30 Jun 202653,695,991โˆ’2,516,0153.22
15 Jun 202656,212,006โˆ’6,603,9113.41
29 May 202662,815,917+21,977,2502.84
15 May 202640,838,667+820,35811.48
30 Apr 202640,018,309โˆ’177,7987.65
15 Apr 202640,196,107+2,695,8074.85
31 Mar 202637,500,300+878,0142.75
13 Mar 202636,622,286+1,906,7482.70
27 Feb 202634,715,538+3,623,1961.00
13 Feb 202631,092,342+4,313,1065.10
30 Jan 202626,779,236+1,556,7935.68
15 Jan 202625,222,443+1,107,6105.43
31 Dec 202524,114,833+3,803,9224.66
15 Dec 202520,310,911โˆ’3,127,6545.73
28 Nov 202523,438,565โˆ’983,7238.22
14 Nov 202524,422,288โˆ’496,1349.45
31 Oct 202524,918,422โˆ’1,841,2468.01
15 Oct 202526,759,668โˆ’637,5488.24
30 Sep 202527,397,216+3,404,0026.44
15 Sep 202523,993,214+1,946,3124.23
29 Aug 202522,046,902+1,544,3907.14
15 Aug 202520,502,512+1,757,3476.81
31 Jul 202518,745,165+623,1275.16
15 Jul 202518,122,038+1,215,71911.65
30 Jun 202516,906,319+5,829,7924.31
13 Jun 202511,076,527โˆ’6,0098.66
30 May 202511,082,536+542,0446.64
15 May 202510,540,492+470,8047.24
30 Apr 202510,069,688+896,9895.90
15 Apr 20259,172,699+1,198,6435.68
31 Mar 20257,974,056+2,233,0105.43
14 Mar 20255,741,046+153,6073.90
28 Feb 20255,587,439โˆ’129,7332.90
14 Feb 20255,717,172โˆ’94,2352.91
31 Jan 20255,811,407โˆ’441,6198.86
15 Jan 20256,253,026+134,6674.79
31 Dec 20246,118,359โˆ’899,2906.27
13 Dec 20247,017,649+640,5102.15
29 Nov 20246,377,139โˆ’150,3785.81
15 Nov 20246,527,517+223,1696.32
31 Oct 20246,304,348โˆ’648,32510.01
15 Oct 20246,952,673โˆ’800,0647.61
30 Sep 20247,752,737โˆ’798,4458.68
13 Sep 20248,551,182โˆ’532,5159.50
30 Aug 20249,083,697โˆ’499,33712.59
15 Aug 20249,583,034โˆ’39,3749.55
31 Jul 20249,622,408+431,9017.03
15 Jul 20249,190,507โˆ’439,4834.88
28 Jun 20249,629,990โˆ’352,1331.46
14 Jun 20249,982,123โˆ’3,221,3708.74
31 May 202413,203,493+621,04012.08
15 May 202412,582,453โˆ’263,1234.72
30 Apr 202412,845,576+1,733,12311.05
15 Apr 202411,112,453+348,4996.41
28 Mar 202410,763,954โˆ’322,2938.46
15 Mar 202411,086,247โˆ’3,215,7137.31
29 Feb 202414,301,960โˆ’1,001,4877.48
15 Feb 202415,303,447โˆ’1,411,96018.74
31 Jan 202416,715,407โˆ’633,65231.91
12 Jan 202417,349,059โˆ’213,28726.57
29 Dec 202317,562,346โˆ’1,254,26911.80
15 Dec 202318,816,615โˆ’3,758,4127.43
30 Nov 202322,575,027+416,57612.55
15 Nov 202322,158,451+2,131,68411.09
31 Oct 202320,026,767โˆ’3,411,9186.66
13 Oct 202323,438,685โˆ’409,06620.06
29 Sep 202323,847,751+3,673,60113.21
15 Sep 202320,174,150+400,0906.46
31 Aug 202319,774,060โˆ’677,56413.39
15 Aug 202320,451,624+323,37413.64
31 Jul 202320,128,250+5,457,4244.96
14 Jul 202314,670,826+312,6019.09
30 Jun 202314,358,225โˆ’1,892,5194.92
15 Jun 202316,250,744+995,7185.96
31 May 202315,255,026โˆ’515,2397.23
15 May 202315,770,265โˆ’509,23212.45
28 Apr 202316,279,497โˆ’849,2827.30
14 Apr 202317,128,779+66,6748.98
31 Mar 202317,062,105โˆ’7,453,2772.54
15 Mar 202324,515,382โˆ’2,106,3186.73
28 Feb 202326,621,700สณ+1,376,4318.11
15 Feb 202325,245,269โˆ’108,3519.51
31 Jan 202325,353,620โˆ’1,814,7057.49
13 Jan 202327,168,325+277,7706.83
30 Dec 202226,890,555+12,482,1152.71
15 Dec 202214,408,440โˆ’7,065,5631.14
30 Nov 202221,474,003+2,340,37310.39
15 Nov 202219,133,630+156,04516.79
31 Oct 202218,977,585+1,314,56212.22
14 Oct 202217,663,023+289,51913.14
30 Sep 202217,373,504+764,70012.39
15 Sep 202216,608,804+483,49819.18
31 Aug 202216,125,306+655,36522.09
15 Aug 202215,469,941+959,52311.35
29 Jul 202214,510,418+998,2469.14
15 Jul 202213,512,172+1,658,8244.01
30 Jun 202211,853,348โˆ’238,14215.13
15 Jun 202212,091,490+876,00123.05
31 May 202211,215,489โˆ’281,38017.37
13 May 202211,496,869+1,057,91710.50
29 Apr 202210,438,952โˆ’1,085,5246.28
14 Apr 202211,524,476โˆ’316,97121.57
31 Mar 202211,841,447โˆ’219,32221.65
15 Mar 202212,060,769โˆ’95,93323.06
28 Feb 202212,156,702โˆ’268,51718.58
15 Feb 202212,425,219+92,91221.74
31 Jan 202212,332,307+1,057,16912.42
14 Jan 202211,275,138+311,06919.70
31 Dec 202110,964,069+799,86118.99
15 Dec 202110,164,208+130,35916.73
30 Nov 202110,033,849โˆ’25,10826.42
15 Nov 202110,058,957+946,69217.11
29 Oct 20219,112,265+73,09620.68
15 Oct 20219,039,169โˆ’226,94418.65
30 Sep 20219,266,113โˆ’394,78611.95
15 Sep 20219,660,899โˆ’332,85219.95
31 Aug 20219,993,751โˆ’552,22419.30
13 Aug 202110,545,975โˆ’543,24220.31
30 Jul 202111,089,217+875,20328.25
15 Jul 202110,214,014+318,46527.21
30 Jun 20219,895,549โˆ’624,01312.15
15 Jun 202110,519,562สณ+120,24927.06
28 May 202110,399,313โˆ’80,77420.09
14 May 202110,480,087โˆ’353,21721.20
30 Apr 202110,833,304โˆ’356,47133.05
15 Apr 202111,189,775+134,50320.89
31 Mar 202111,055,272+2,682,54417.10
15 Mar 20218,372,728+489,75111.50
26 Feb 20217,882,977+230,52110.95
12 Feb 20217,652,456+1,209,12512.51
29 Jan 20216,443,331โˆ’1,105,47411.50
15 Jan 20217,548,805โˆ’339,29916.47
31 Dec 20207,888,104+198,2459.67
15 Dec 20207,689,859โˆ’682,6238.50
30 Nov 20208,372,482+333,40621.90
13 Nov 20208,039,076โˆ’1,990,79916.53
30 Oct 202010,029,875โˆ’391,06712.00
15 Oct 202010,420,942+564,9056.61
30 Sep 20209,856,037+1,713,68017.87
15 Sep 20208,142,357+48,22229.91
31 Aug 20208,094,135โˆ’50,15331.39
14 Aug 20208,144,288+277,30619.57
31 Jul 20207,866,982+678,44112.95
15 Jul 20207,188,541+1,386,72616.21
30 Jun 20205,801,815+107,9978.59
15 Jun 20205,693,818โˆ’156,59810.20
29 May 20205,850,416+1,330,4843.68
15 May 20204,519,932สณโˆ’205,89111.06
30 Apr 20204,725,823โˆ’294,37916.46
15 Apr 20205,020,202+91,41014.60
31 Mar 20204,928,792โˆ’118,16610.76
13 Mar 20205,046,958โˆ’118,30611.64
28 Feb 20205,165,264โˆ’157,28515.76
14 Feb 20205,322,549โˆ’262,53917.35
31 Jan 20205,585,088+695,84012.95
15 Jan 20204,889,248+505,34311.48
31 Dec 20194,383,905+762,8203.47
13 Dec 20193,621,085โˆ’98,48112.01
29 Nov 20193,719,566โˆ’423,8907.82
15 Nov 20194,143,456โˆ’305,60512.06
31 Oct 20194,449,061โˆ’444,6396.53
15 Oct 20194,893,700โˆ’133,07613.02
30 Sep 20195,026,776+1,770,1334.21
13 Sep 20193,256,643+64,9448.33
30 Aug 20193,191,699โˆ’343,0559.80
15 Aug 20193,534,754+125,77015.81
31 Jul 20193,408,984+949,30313.65
15 Jul 20192,459,681+385,26314.41
28 Jun 20192,074,418+402,9405.87
14 Jun 20191,671,478+94,26812.43
31 May 20191,577,210+212,20411.42
15 May 20191,365,006โˆ’88,79914.28
30 Apr 20191,453,805+91,34611.38
15 Apr 20191,362,459โˆ’94,4328.72
29 Mar 20191,456,891+590,2149.78
15 Mar 2019866,677+375,7261.77
28 Feb 2019490,951+174,3011.08
15 Feb 2019316,650โ€“1.00

Scroll inside the table for earlier settlements, back to 15 Feb 2019.

Questions

Frequently asked questions

What is GOSS's short interest?
948,623 shares short for settlement date 15 Sep 2026, per FINRA's consolidated short interest report, down 81,684,694 from the previous settlement.
Why is there no percentage for GOSS?
Because no defensible share count exists to divide by: an SEC filer exists but no defensible share count is available yet. The symbol maps to an SEC filer, but its share count cannot be used yet. A newly listed company needs two cover-page counts on file before the first is trusted; a split or an unexplained jump pauses publication until a fresh SEC count corroborates it; a secondary share class publishes under the company's primary line; and a foreign filer's short count is in depositary-share units. This page upgrades to a percentage automatically once a defensible count exists.
What is GOSS's days to cover?
5.07 days for settlement date 15 Sep 2026: FINRA's own short interest ratio, the reported shares short divided by average daily trading volume, published in the same file and shown verbatim. We hold no volume data ourselves.
Is this the short float?
No. This page shows FINRA's share count only. Short float divides that count by the public float, and short interest as we publish it elsewhere divides it by shares outstanding from SEC filings. Neither denominator is available for this line, so neither ratio is shown.
How often does this update?
FINRA member firms report short positions as of the 15th and the last business day of each month, and FINRA publishes the consolidated figures about nine business days later. We ingest each file the day it appears and re-read recent settlements for revisions.

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