CTM Short Interest (April 15, 2026 Update)
Short interest for CTM was 4.4M as of April 15, 2026, -8.3% from the prior report.
This page tracks CTM short interest over time, including historical values, changes between reports, and days to cover.
Castellum, Inc. | CTM | B | Latest report: April 15, 2026
At the latest settlement date of April 15, 2026, Castellum, Inc. (CTM) showed reported short interest of 4,403,986 shares. That compared with 4,800,688 shares in the prior report, a change of -396.7K shares, or -8.3%. The latest reported days to cover was 5.15, based on average daily volume of 855.3K.
The historical data currently tracked for CTM includes 82 reported entries from October 14, 2022 to April 15, 2026. The table below shows each reported settlement date currently included for this symbol.
Extreme edge-case readings may reflect unusually low reported average volume.
| Settlement Date | Short Interest | Prior Short Interest | Change Shares | Change % | Average Daily Volume | Days to Cover |
|---|---|---|---|---|---|---|
| April 15, 2026 | 4,403,986 | 4,800,688 | -396.7K | -8.3% | 855.3K | 5.15 |
| March 31, 2026 | 4,800,688 | 4,596,457 | 204.2K | +4.4% | 1.7M | 2.89 |
| March 13, 2026 | 4,596,457 | 3,844,921 | 751.5K | +19.6% | 715.3K | 6.43 |
| February 27, 2026 | 3,844,921 | 3,791,646 | 53.3K | +1.4% | 909.2K | 4.23 |
| February 13, 2026 | 3,791,646 | 3,617,871 | 173.8K | +4.8% | 1.2M | 3.29 |
| January 30, 2026 | 3,617,871 | 2,504,221 | 1.1M | +44.5% | 1.5M | 2.44 |
| January 15, 2026 | 2,504,221 | 2,423,431 | 80.8K | +3.3% | 1.9M | 1.32 |
| December 31, 2025 | 2,423,431 | 2,311,915 | 111.5K | +4.8% | 2.3M | 1.04 |
| December 15, 2025 | 2,311,915 | 4,301,349 | -2.0M | -46.3% | 1.7M | 1.36 |
| November 28, 2025 | 4,301,349 | 3,205,097 | 1.1M | +34.2% | 1.5M | 2.81 |
| November 14, 2025 | 3,205,097 | 3,508,498 | -303.4K | -8.6% | 5.3M | 1 |
| October 31, 2025 | 3,508,498 | 3,090,684 | 417.8K | +13.5% | 9.7M | 1 |
| October 15, 2025 | 3,090,684 | 3,125,885 | -35.2K | -1.1% | 2.6M | 1.19 |
| September 15, 2025 | 1,706,033 | 1,682,098 | 23.9K | +1.4% | 2.4M | 1 |
| August 29, 2025 | 1,682,098 | 1,540,327 | 141.8K | +9.2% | 2.1M | 1 |
| August 15, 2025 | 1,540,327 | 1,502,293 | 38.0K | +2.5% | 2.6M | 1 |
| July 31, 2025 | 1,502,293 | 2,232,035 | -729.7K | -32.7% | 3.4M | 1 |
| July 15, 2025 | 2,232,035 | 534,201 | 1.7M | +317.8% | 3.0M | 1 |
| June 30, 2025 | 534,201 | 699,494 | -165.3K | -23.6% | 1.7M | 1 |
| June 13, 2025 | 699,494 | 647,512 | 52.0K | +8.0% | 2.9M | 1 |
| May 30, 2025 | 647,512 | 1,459,143 | -811.6K | -55.6% | 1.5M | 1 |
| May 15, 2025 | 1,459,143 | 1,477,762 | -18.6K | -1.3% | 1.2M | 1.24 |
| April 30, 2025 | 1,477,762 | 2,076,266 | -598.5K | -28.8% | 738.0K | 2 |
| April 15, 2025 | 2,076,266 | 2,626,429 | -550.2K | -20.9% | 1.3M | 1.54 |
| March 31, 2025 | 2,626,429 | 2,839,407 | -213.0K | -7.5% | 4.8M | 1 |
| February 28, 2025 | 1,842,501 | 1,950,040 | -107.5K | -5.5% | 4.2M | 1 |
| February 14, 2025 | 1,950,040 | 648,703 | 1.3M | +200.6% | 6.9M | 1 |
| January 31, 2025 | 648,703 | 949,175 | -300.5K | -31.7% | 3.3M | 1 |
| January 15, 2025 | 949,175 | 3,098,036 | -2.1M | -69.4% | 11.7M | 1 |
| December 31, 2024 | 3,098,036 | 648,130 | 2.4M | +378.0% | 24.8M | 1 |
| December 13, 2024 | 648,130 | 204,292 | 443.8K | +217.3% | 4.1M | 1 |
| November 29, 2024 | 204,292 | 332,245 | -128.0K | -38.5% | 578.5K | 1 |
| November 15, 2024 | 332,245 | 101,066 | 231.2K | +228.7% | 7.8M | 1 |
| October 31, 2024 | 101,066 | 181,524 | -80.5K | -44.3% | 141.8K | 1 |
| October 15, 2024 | 181,524 | 204,221 | -22.7K | -11.1% | 63.9K | 2.84 |
| September 30, 2024 | 204,221 | 445,843 | -241.6K | -54.2% | 161.8K | 1.26 |
| September 13, 2024 | 445,843 | 490,345 | -44.5K | -9.1% | 213.8K | 2.09 |
| August 30, 2024 | 490,345 | 338,052 | 152.3K | +45.1% | 277.4K | 1.77 |
| August 15, 2024 | 338,052 | 586,487 | -248.4K | -42.4% | 388.3K | 1 |
| July 31, 2024 | 586,487 | 88,873 | 497.6K | +559.9% | 6.1M | 1 |
| July 15, 2024 | 88,873 | 124,254 | -35.4K | -28.5% | 196.0K | 1 |
| June 28, 2024 | 124,254 | 154,262 | -30.0K | -19.5% | 192.8K | 1 |
| June 14, 2024 | 154,262 | 175,026 | -20.8K | -11.9% | 153.1K | 1.01 |
| May 31, 2024 | 175,026 | 74,010 | 101.0K | +136.5% | 157.5K | 1.11 |
| May 15, 2024 | 74,010 | 97,948 | -23.9K | -24.4% | 76.0K | 1 |
| April 30, 2024 | 97,948 | 105,482 | -7.5K | -7.1% | 87.1K | 1.12 |
| April 15, 2024 | 105,482 | 84,049 | 21.4K | +25.5% | 104.6K | 1.01 |
| March 28, 2024 | 84,049 | 94,952 | -10.9K | -11.5% | 203.8K | 1 |
| March 15, 2024 | 94,952 | 50,402 | 44.5K | +88.4% | 222.8K | 1 |
| February 29, 2024 | 50,402 | 20,447 | 30.0K | +146.5% | 187.8K | 1 |
| February 15, 2024 | 20,447 | 45,271 | -24.8K | -54.8% | 89.7K | 1 |
| January 31, 2024 | 45,271 | 72,190 | -26.9K | -37.3% | 354.6K | 1 |
| December 29, 2023 | 101,422 | 111,033 | -9.6K | -8.7% | 293.2K | 1 |
| December 15, 2023 | 111,033 | 149,460 | -38.4K | -25.7% | 243.2K | 1 |
| November 30, 2023 | 149,460 | 238,731 | -89.3K | -37.4% | 361.7K | 1 |
| November 15, 2023 | 238,731 | 485,849 | -247.1K | -50.9% | 707.3K | 1 |
| October 31, 2023 | 485,849 | 121,125 | 364.7K | +301.1% | 1.9M | 1 |
| October 13, 2023 | 121,125 | 77,265 | 43.9K | +56.8% | 281.3K | 1 |
| September 29, 2023 | 77,265 | 148,662 | -71.4K | -48.0% | 59.7K | 1.29 |
| September 15, 2023 | 148,662 | 140,356 | 8.3K | +5.9% | 103.4K | 1.44 |
| August 31, 2023 | 140,356 | 30,857 | 109.5K | +354.9% | 270.3K | 1 |
| August 15, 2023 | 30,857 | 51,767 | -20.9K | -40.4% | 737.0K | 1 |
| July 31, 2023 | 51,767 | 48,126 | 3.6K | +7.6% | 88.5K | 1 |
| July 14, 2023 | 48,126 | 97,686 | -49.6K | -50.7% | 102.7K | 1 |
| June 30, 2023 | 97,686 | 43,360 | 54.3K | +125.3% | 1.5M | 1 |
| June 15, 2023 | 43,360 | 44,077 | -717 | -1.6% | 76.2K | 1 |
| May 31, 2023 | 44,077 | 56,849 | -12.8K | -22.5% | 60.2K | 1 |
| May 15, 2023 | 56,849 | 77,912 | -21.1K | -27.0% | 33.6K | 1.69 |
| April 28, 2023 | 77,912 | 101,642 | -23.7K | -23.3% | 81.2K | 1 |
| April 14, 2023 | 101,642 | 107,467 | -5.8K | -5.4% | 73.5K | 1.38 |
| March 31, 2023 | 107,467 | 96,652 | 10.8K | +11.2% | 53.1K | 2.02 |
| March 15, 2023 | 96,652 | 41,501 | 55.2K | +132.9% | 57.7K | 1.67 |
| February 28, 2023 | 41,501 | 39,443 | 2.1K | +5.2% | 46.8K | 1 |
| February 15, 2023 | 39,443 | 78,587 | -39.1K | -49.8% | 175.8K | 1 |
| January 31, 2023 | 78,587 | 110,154 | -31.6K | -28.7% | 87.0K | 1 |
| January 13, 2023 | 110,154 | 106,305 | 3.8K | +3.6% | 53.1K | 2.07 |
| December 30, 2022 | 106,305 | 144,780 | -38.5K | -26.6% | 269.2K | 1 |
| December 15, 2022 | 144,780 | 96,465 | 48.3K | +50.1% | 467.4K | 1 |
| November 30, 2022 | 96,465 | 110,132 | -13.7K | -12.4% | 101.2K | 1 |
| November 15, 2022 | 110,132 | 90,579 | 19.6K | +21.6% | 815.8K | 1 |
| October 31, 2022 | 90,579 | 10,816 | 79.8K | +737.5% | 183.5K | 1 |
| October 14, 2022 | 10,816 | 1,329 | 9.5K | +713.8% | 614.5K | 1 |