ShortInterestHistory.com

AMTM Short Interest History

AMTM Short Interest (September 15, 2026 Update)
Short interest for AMTM was 12.2M as of September 15, 2026, +1.1% from the prior report.
This page tracks AMTM short interest over time, including historical values, changes between reports, and days to cover.

Amentum Holdings, Inc. | AMTM | NYSE | Latest report: September 15, 2026

Current Short Interest12.2M
Prior Short Interest12.1M
Change Shares133.3K
Change %+1.1%
Average Daily Volume1.7M
Days to Cover7.34

At the latest settlement date of September 15, 2026, Amentum Holdings, Inc. (AMTM) showed reported short interest of 12,229,137 shares. That compared with 12,095,846 shares in the prior report, a change of 133.3K shares, or +1.1%. The latest reported days to cover was 7.34, based on average daily volume of 1.7M.

The historical data currently tracked for AMTM includes 46 reported entries from September 30, 2024 to September 15, 2026. Over that span, reported short interest has ranged from 376.1K to 13.9M shares.

Short Interest Over Time

Days to Cover Over Time

Extreme edge-case readings may reflect unusually low reported average volume.

Short Interest History for AMTM

Settlement DateShort InterestPrior Short InterestChange SharesChange %Average Daily VolumeDays to Cover
September 15, 202612,229,13712,095,846133.3K+1.1%1.7M7.34
August 31, 202612,095,84610,651,4341.4M+13.6%2.5M4.8
August 14, 202610,651,43412,385,682-1.7M-14.0%2.5M4.2
July 31, 202612,385,68213,453,698-1.1M-7.9%1.8M7.07
July 15, 202613,453,69813,742,445-288.7K-2.1%1.9M7.03
June 30, 202613,742,44513,599,381143.1K+1.1%2.2M6.11
June 15, 202613,599,38113,844,021-244.6K-1.8%1.7M8.01
May 29, 202613,844,02113,878,459-34.4K-0.2%2.2M6.3
May 15, 202613,878,45913,853,12025.3K+0.2%2.6M5.32
April 30, 202613,853,12011,750,0882.1M+17.9%1.6M8.57
April 15, 202611,750,08811,373,750376.3K+3.3%1.7M7
March 31, 202611,373,75010,860,074513.7K+4.7%1.8M6.3
March 13, 202610,860,0749,780,3721.1M+11.0%2.0M5.46
February 27, 20269,780,3729,028,792751.6K+8.3%1.8M5.52
February 13, 20269,028,7928,360,229668.6K+8.0%3.4M2.64
January 30, 20268,360,2298,306,75553.5K+0.6%1.8M4.6
January 15, 20268,306,7557,043,1421.3M+17.9%2.0M4.19
December 31, 20257,043,1427,000,68342.5K+0.6%1.6M4.53
December 15, 20257,000,6839,555,161-2.6M-26.7%2.6M2.74
November 28, 20259,555,1617,519,7242.0M+27.1%4.4M2.16
November 14, 20257,519,7249,745,819-2.2M-22.8%1.3M5.97
October 31, 20259,745,8199,431,953313.9K+3.3%1.2M8.01
October 15, 20259,431,9539,562,783-130.8K-1.4%1.8M5.1
September 15, 20258,548,1419,263,705-715.6K-7.7%1.4M6.1
August 29, 20259,263,7058,110,3531.2M+14.2%1.2M7.44
August 15, 20258,110,3537,431,510678.8K+9.1%1.7M4.8
July 31, 20257,431,5109,170,999-1.7M-19.0%1.6M4.58
July 15, 20259,170,9998,707,396463.6K+5.3%1.4M6.59
June 30, 20258,707,3969,968,475-1.3M-12.7%2.1M4.11
June 13, 20259,968,4759,021,099947.4K+10.5%3.1M3.17
May 30, 20259,021,0998,526,543494.6K+5.8%2.2M4.08
May 15, 20258,526,5438,766,489-239.9K-2.7%2.1M4.11
April 30, 20258,766,4898,975,648-209.2K-2.3%2.1M4.22
April 15, 20258,975,6489,879,663-904.0K-9.2%2.8M3.15
March 31, 20259,879,6638,869,6031.0M+11.4%2.6M3.74
February 28, 20259,578,4858,965,362613.1K+6.8%1.9M5.03
February 14, 20258,965,3628,190,515774.8K+9.5%2.2M4.04
January 31, 20258,190,5158,397,191-206.7K-2.5%2.1M3.97
January 15, 20258,397,1917,108,0581.3M+18.1%2.6M3.17
December 31, 20247,108,0584,512,8892.6M+57.5%6.5M1.09
December 13, 20244,512,8893,342,3971.2M+35.0%1.7M2.6
November 29, 20243,342,3972,264,6641.1M+47.6%2.0M1.64
November 15, 20242,264,6642,658,229-393.6K-14.8%1.4M1.59
October 31, 20242,658,2292,889,211-231.0K-8.0%1.7M1.58
October 15, 20242,889,211376,1132.5M+668.2%4.6M1
September 30, 2024376,1130376.1K+100.0%1.7M1

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