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HowShorted

CTRM short interest Nasdaq Capital Market

Castor Maritime Inc. Common Sh. 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
9,813
vs previous settlement
โˆ’5,645 (-36.5%)
days to cover
1.00
Settlement date
15 Sep 2026

Shares short over time

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

Fails to deliver

The SEC's fails-to-deliver figure for CTRM: 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.

Last balance on file
15
9 Sep 2026
Highest in window
4,500
12 Dec 2025
Days with a balance
9
Window
16 Sep 2025 to 14 Sep 2026
Aggregate net short position time series for Castor Maritime Inc. Common Sh 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 4.5K shares.

History

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

Full reported short interest history
Settlement dateShares shortChangeDays to cover
15 Sep 20269,813โˆ’5,6451.00
31 Aug 202615,458โˆ’13,0111.00
14 Aug 202628,469+4,6381.00
31 Jul 202623,831โˆ’761.00
15 Jul 202623,907+5,9701.00
30 Jun 202617,937+2,4571.00
15 Jun 202615,480+6,7101.00
29 May 20268,770โˆ’6,9831.00
15 May 202615,753+6,0541.00
30 Apr 20269,699โˆ’3,1081.00
15 Apr 202612,807โˆ’3,5561.00
31 Mar 202616,363+2,8161.00
13 Mar 202613,547+8,1651.00
27 Feb 20265,382โˆ’201.00
13 Feb 20265,402โˆ’1,6251.00
30 Jan 20267,027+2,3131.00
15 Jan 20264,714โˆ’8,8401.00
31 Dec 202513,554โˆ’8,0741.00
15 Dec 202521,628โˆ’8,6521.00
28 Nov 202530,280โˆ’14,9071.16
14 Nov 202545,187+26,9821.00
31 Oct 202518,205+1,4061.00
15 Oct 202516,799+1,9721.00
30 Sep 202514,827โˆ’23,3881.00
15 Sep 202538,215+1,5291.00
29 Aug 202536,686โˆ’19,2231.31
15 Aug 202555,909+5,9031.94
31 Jul 202550,006+8,6221.52
15 Jul 202541,384โˆ’13,4241.10
30 Jun 202554,808+9,2571.00
13 Jun 202545,551โˆ’18,4541.00
30 May 202564,005+4,7701.15
15 May 202559,235โˆ’25,4921.00
30 Apr 202584,727โˆ’18,0303.78
15 Apr 2025102,757+33,5131.78
31 Mar 202569,244+5,9431.00
14 Mar 202563,301+28,9921.11
28 Feb 202534,309โˆ’24,5891.00
14 Feb 202558,898+12,3291.89
31 Jan 202546,569+6,7531.58
15 Jan 202539,816+19,8451.00
31 Dec 202419,971โˆ’50,1811.00
13 Dec 202470,152โˆ’19,4041.08
29 Nov 202489,556+14,0922.08
15 Nov 202475,464+36,1531.00
31 Oct 202439,311+12,5301.00
15 Oct 202426,781+13,4171.00
30 Sep 202413,364โˆ’11,6161.00
13 Sep 202424,980โˆ’10,6631.00
30 Aug 202435,643โˆ’15,3941.00
15 Aug 202451,037โˆ’23,1271.14
31 Jul 202474,164+17,1461.63
15 Jul 202457,018+9,6271.29
28 Jun 202447,391โˆ’23,7241.00
14 Jun 202471,115โˆ’5,1311.58
31 May 202476,246+21,5871.00
15 May 202454,659โˆ’17,9151.00
30 Apr 202472,574+9,8411.11
15 Apr 202462,733+9,9011.00
28 Mar 202452,832โˆ’464,1411.00
15 Mar 2024516,973+17,1331.38
29 Feb 2024499,840โˆ’33,8131.00
15 Feb 2024533,653โˆ’341,7271.47
31 Jan 2024875,380+166,2781.86
12 Jan 2024709,102โˆ’32,4691.00
29 Dec 2023741,571โˆ’316,7421.10
15 Dec 20231,058,313+164,3981.39
30 Nov 2023893,915+18,7401.86
15 Nov 2023875,175โˆ’289,4902.19
31 Oct 20231,164,665+89,0742.85
13 Oct 20231,075,591+302,0112.47
29 Sep 2023773,580โˆ’173,3781.63
15 Sep 2023946,958โˆ’19,6512.98
31 Aug 2023966,609โˆ’343,2743.27
15 Aug 20231,309,883+1,6121.99
31 Jul 20231,308,271+41,9783.68
14 Jul 20231,266,293+195,0183.37
30 Jun 20231,071,275+14,8521.93
15 Jun 20231,056,423โˆ’461,2841.58
31 May 20231,517,707โˆ’112,0722.33
15 May 20231,629,779+144,4985.25
28 Apr 20231,485,281โˆ’350,1252.57
14 Apr 20231,835,406โˆ’299,9523.89
31 Mar 20232,135,358โˆ’251,4953.38
15 Mar 20232,386,853+1,223,0321.00
28 Feb 20231,163,821+45,5183.19
15 Feb 20231,118,303+8,1831.92
31 Jan 20231,110,120โˆ’96,3933.61
13 Jan 20231,206,513โˆ’730,5732.59
30 Dec 20221,937,086+678,3973.26
15 Dec 20221,258,689+37,1161.43
30 Nov 20221,221,573+222,5341.29
15 Nov 2022999,039โˆ’700,8972.29
31 Oct 20221,699,936โˆ’215,5634.80
14 Oct 20221,915,499+775,4872.83
30 Sep 20221,140,012โˆ’433,9122.34
15 Sep 20221,573,924+410,7322.60
31 Aug 20221,163,192โˆ’700,6091.45
15 Aug 20221,863,801โˆ’368,0952.66
29 Jul 20222,231,896+821,9623.13
15 Jul 20221,409,934โˆ’190,7932.34
30 Jun 20221,600,727โˆ’132,8801.92
15 Jun 20221,733,607โˆ’45,1791.39
31 May 20221,778,786โˆ’196,7761.45
13 May 20221,975,562โˆ’97,2801.17
29 Apr 20222,072,842โˆ’538,4241.00
14 Apr 20222,611,266+1,012,0661.00
31 Mar 20221,599,200โˆ’802,2011.09
15 Mar 20222,401,401+887,8681.08
28 Feb 20221,513,533โˆ’1,012,7491.00
15 Feb 20222,526,282+724,4221.00
31 Jan 20221,801,860+10,0431.05
14 Jan 20221,791,817โˆ’315,1951.51
31 Dec 20212,107,012โˆ’876,7851.23
15 Dec 20212,983,797+638,6961.57
30 Nov 20212,345,101โˆ’162,0921.01
15 Nov 20212,507,193โˆ’1,237,4081.00
29 Oct 20213,744,601โˆ’644,6791.45
15 Oct 20214,389,280+710,3601.64
30 Sep 20213,678,920+36,1211.00
15 Sep 20213,642,799โˆ’5,2231.00
31 Aug 20213,648,022โˆ’663,8241.23
13 Aug 20214,311,846โˆ’87,1661.00
30 Jul 20214,399,012โˆ’228,1932.05
15 Jul 20214,627,205+209,9371.40
30 Jun 20214,417,268+1,180,6911.00
15 Jun 20213,236,577โˆ’795,0531.00
28 May 20214,031,630สณโˆ’30,205,4791.00
14 May 202134,237,109+448,4521.00
30 Apr 202133,788,657+16,295,2121.00
15 Apr 202117,493,445+5,318,0901.00
31 Mar 202112,175,355+3,824,7611.00
15 Mar 20218,350,594โˆ’9,489,7821.00
26 Feb 202117,840,376โˆ’13,184,5521.00
12 Feb 202131,024,928โˆ’4,647,7651.00
29 Jan 202135,672,693+9,882,9761.00
15 Jan 202125,789,717+25,298,5391.00
31 Dec 2020491,178+200,3121.00
15 Dec 2020290,866โˆ’515,1151.00
30 Nov 2020805,981โˆ’742,0811.00
13 Nov 20201,548,062+667,9461.00
30 Oct 2020880,116+221,7441.00
15 Oct 2020658,372โˆ’342,2861.00
30 Sep 20201,000,658+363,7311.00
15 Sep 2020636,927+628,8641.00
31 Aug 20208,063โˆ’244,7711.00
14 Aug 2020252,834โˆ’125,9881.00
31 Jul 2020378,822โˆ’109,8031.00
15 Jul 2020488,625โˆ’4,8921.00
30 Jun 2020493,517+468,9971.00
15 Jun 202024,520+3,6701.00
29 May 202020,850+4,8631.00
15 May 202015,987โˆ’95,6601.00
30 Apr 2020111,647+100,8311.00
15 Apr 202010,816โˆ’29,4671.00
31 Mar 202040,283+28,1621.00
13 Mar 202012,121โˆ’13,6151.00
28 Feb 202025,736+21,0841.00
14 Feb 20204,652โˆ’2,1181.00
31 Jan 20206,770+3,6871.00
15 Jan 20203,083โˆ’42,2371.00
31 Dec 201945,320+30,2061.00
13 Dec 201915,114+2,1761.00
29 Nov 201912,938โˆ’3,1911.00
15 Nov 201916,129โˆ’53,1111.00
31 Oct 201969,240+51,5161.00
15 Oct 201917,724โˆ’24,2421.00
30 Sep 201941,966+4,1761.00
13 Sep 201937,790+21,7621.00
30 Aug 201916,028+5,5101.00
15 Aug 201910,518โˆ’8,3251.00
31 Jul 201918,843+6,4341.00
15 Jul 201912,409+3,2751.00
28 Jun 20199,134โˆ’8,4491.00
14 Jun 201917,583+14,8011.00
31 May 20192,782+5811.00
15 May 20192,201โˆ’29,1411.00
30 Apr 201931,342+20,9621.00
15 Apr 201910,380โˆ’30,9091.00
29 Mar 201941,289+38,2361.00
15 Mar 20193,053+2,9801.00
28 Feb 201973โˆ’1491.00
15 Feb 2019222โ€“1.54

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

Questions

Frequently asked questions

What is CTRM's short interest?
9,813 shares short for settlement date 15 Sep 2026, per FINRA's consolidated short interest report, down 5,645 from the previous settlement.
Why is there no percentage for CTRM?
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 CTRM's days to cover?
1.00 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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