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HowShorted

GLSI short interest Nasdaq Capital Market

Greenwich LifeSciences, Inc. C. 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
1,631,150
vs previous settlement
โˆ’29,819 (-1.8%)
days to cover
19.78
Settlement date
15 Sep 2026

Shares short over time

Aggregate net short position time series for GLSI 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 GLSI days to cover

Fails to deliver

The SEC's fails-to-deliver figure for GLSI: 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
8,477
14 Sep 2026
Highest in window
164,926
16 Dec 2025
Days with a balance
175
Window
16 Sep 2025 to 14 Sep 2026
Aggregate net short position time series for Greenwich LifeSciences, Inc. C 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 165K shares.

History

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

Full reported short interest history
Settlement dateShares shortChangeDays to cover
15 Sep 20261,631,150โˆ’29,81919.78
31 Aug 20261,660,969+67,24911.35
14 Aug 20261,593,720+52,37513.27
31 Jul 20261,541,345+73,6067.18
15 Jul 20261,467,739+9,70012.12
30 Jun 20261,458,039โˆ’3,4728.63
15 Jun 20261,461,511โˆ’56,7179.02
29 May 20261,518,228โˆ’23,55813.37
15 May 20261,541,786โˆ’2,65311.02
30 Apr 20261,544,439+21,75610.97
15 Apr 20261,522,683+19,32213.05
31 Mar 20261,503,361+83,7647.46
13 Mar 20261,419,597+82,1279.03
27 Feb 20261,337,470+57,17210.11
13 Feb 20261,280,298โˆ’38,1835.81
30 Jan 20261,318,481โˆ’227,8901.32
15 Jan 20261,546,371โˆ’123,1623.41
31 Dec 20251,669,533+50,2741.83
15 Dec 20251,619,259+9,1023.68
28 Nov 20251,610,157+27,55527.34
14 Nov 20251,582,602+236,24014.03
31 Oct 20251,346,362+3,92719.89
15 Oct 20251,342,435โˆ’29,08022.66
30 Sep 20251,371,515+137,10416.25
15 Sep 20251,234,411+161,46013.94
29 Aug 20251,072,951+11,08031.70
15 Aug 20251,061,871+21,22620.26
31 Jul 20251,040,645+39,67411.86
15 Jul 20251,000,971โˆ’25,73815.85
30 Jun 20251,026,709+58,07121.84
13 Jun 2025968,638+8,78032.47
30 May 2025959,858โˆ’48,40923.29
15 May 20251,008,267+10,31630.60
30 Apr 2025997,951+87,27412.10
15 Apr 2025910,677+167,3614.12
31 Mar 2025743,316+84,91414.81
14 Mar 2025658,402+14,90034.84
28 Feb 2025643,502โˆ’9,63534.65
14 Feb 2025653,137+9,09930.44
31 Jan 2025644,038+31,32718.28
15 Jan 2025612,711+56,01512.09
31 Dec 2024556,696+26,52715.45
13 Dec 2024530,169+39,80316.25
29 Nov 2024490,366+19,62518.11
15 Nov 2024470,741โˆ’13,85814.84
31 Oct 2024484,599โˆ’16,62026.10
15 Oct 2024501,219+5,49021.61
30 Sep 2024495,729โˆ’9,45114.11
13 Sep 2024505,180+38,5539.66
30 Aug 2024466,627+14,92720.82
15 Aug 2024451,700+36,08514.53
31 Jul 2024415,615+45,00711.63
15 Jul 2024370,608+110,43811.04
28 Jun 2024260,170+30,7981.90
14 Jun 2024229,372+34,2869.44
31 May 2024195,086+18,0338.66
15 May 2024177,053โˆ’12,0715.63
30 Apr 2024189,124+4,0585.85
15 Apr 2024185,066+44,6024.88
28 Mar 2024140,464+3,4174.02
15 Mar 2024137,047+15,7831.72
29 Feb 2024121,264โˆ’52,3731.79
15 Feb 2024173,637+19,1252.92
31 Jan 2024154,512โˆ’6,6968.17
12 Jan 2024161,208+8,8976.76
29 Dec 2023152,311+37,6349.03
15 Dec 2023114,677โˆ’52,3277.46
30 Nov 2023167,004+21610.91
15 Nov 2023166,788+3,2488.75
31 Oct 2023163,540โˆ’20,76612.89
13 Oct 2023184,306โˆ’10,74019.80
29 Sep 2023195,046+14114.17
15 Sep 2023194,905+14,22814.16
31 Aug 2023180,677โˆ’6,34918.29
15 Aug 2023187,026+9,20210.35
31 Jul 2023177,824โˆ’8,49812.10
14 Jul 2023186,322โˆ’9,17910.81
30 Jun 2023195,501โˆ’28,5026.24
15 Jun 2023224,003โˆ’2,21310.17
31 May 2023226,216โˆ’15,81013.02
15 May 2023242,026โˆ’66,87110.57
28 Apr 2023308,897โˆ’31,1105.23
14 Apr 2023340,007+64,2973.71
31 Mar 2023275,710+83,1927.43
15 Mar 2023192,518+17,4724.84
28 Feb 2023175,046โˆ’2,0707.03
15 Feb 2023177,116โˆ’4,0094.50
31 Jan 2023181,125โˆ’19,7013.83
13 Jan 2023200,826โˆ’23,8106.01
30 Dec 2022224,636+30,3524.28
15 Dec 2022194,284โˆ’42,1195.73
30 Nov 2022236,403+5474.01
15 Nov 2022235,856+49,3195.38
31 Oct 2022186,537โˆ’51,4224.66
14 Oct 2022237,959โˆ’28,2679.19
30 Sep 2022266,226+9,1436.54
15 Sep 2022257,083+24,6834.92
31 Aug 2022232,400+37,8996.01
15 Aug 2022194,501โˆ’102,7432.68
29 Jul 2022297,244โˆ’121,1172.54
15 Jul 2022418,361+156,5221.00
30 Jun 2022261,839โˆ’105,1501.53
15 Jun 2022366,989+19,5301.17
31 May 2022347,459+39,0512.07
13 May 2022308,408+10,1095.42
29 Apr 2022298,299+24,4073.76
14 Apr 2022273,892โˆ’45,6256.76
31 Mar 2022319,517+119,5534.91
15 Mar 2022199,964+13,4614.04
28 Feb 2022186,503+2,3462.85
15 Feb 2022184,157+37,7021.75
31 Jan 2022146,455+58,8272.09
14 Jan 202287,628โˆ’19,6382.37
31 Dec 2021107,266โˆ’3,0091.00
15 Dec 2021110,275+3,8022.10
30 Nov 2021106,473+21,1945.01
15 Nov 202185,279โˆ’23,0144.38
29 Oct 2021108,293โˆ’8,3014.17
15 Oct 2021116,594โˆ’113,6903.89
30 Sep 2021230,284+96,6323.48
15 Sep 2021133,652โˆ’16,6022.54
31 Aug 2021150,254โˆ’33,2496.09
13 Aug 2021183,503โˆ’21,5457.09
30 Jul 2021205,048+6,0984.09
15 Jul 2021198,950+4,5323.28
30 Jun 2021194,418+75,4841.00
15 Jun 2021118,934สณโˆ’17,1011.00
28 May 2021136,035โˆ’5,9842.17
14 May 2021142,019+19,1111.65
30 Apr 2021122,908โˆ’194,6231.00
15 Apr 2021317,531+125,6841.00
31 Mar 2021191,847โˆ’52,0301.00
15 Mar 2021243,877+167,3771.00
26 Feb 202176,500+28,2361.00
12 Feb 202148,264+8,1541.00
29 Jan 202140,110โˆ’10,5621.00
15 Jan 202150,672+27,2571.00
31 Dec 202023,415โˆ’110,2531.00
15 Dec 2020133,668+128,8141.00
30 Nov 20204,854+3,4721.00
13 Nov 20201,382โˆ’4631.00
30 Oct 20201,845โˆ’2,8061.00
15 Oct 20204,651+1,4501.00
30 Sep 20203,201โ€“1.00

Scroll inside the table for earlier settlements, back to 30 Sep 2020.

Questions

Frequently asked questions

What is GLSI's short interest?
1,631,150 shares short for settlement date 15 Sep 2026, per FINRA's consolidated short interest report, down 29,819 from the previous settlement.
Why is there no percentage for GLSI?
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 GLSI's days to cover?
19.78 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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