Mario Gabelli's AMTM Position Overview
Mario Gabelli (via Gamco Investors, Inc. Et Al) currently holds 91,861 shares of Amentum Holdings, Inc. (AMTM) worth $2.66 M, representing 0.03% of the portfolio. First purchased in 2025-Q2, this short-term holding has been held for 3 quarters.
Based on 13F filings, Mario Gabelli has maintained this position in AMTM for several quarters, showing initial confidence in the investment. Largest reduction occurred in Q3 2025, reducing 9,027 shares.
Analysis based on 13F filings available since 2013 Q2
Mario Gabelli's Amentum Holdings (AMTM) Holding Value Over Time
Track share changes against reported price movement
Quarterly Amentum Holdings (AMTM) Trades by Mario Gabelli
| Report Date | Bought/Sold (Sh.) | % Change | Qtr. End Shares | Reported Price |
|---|---|---|---|---|
| Q4 2025 | -7,782 | Reduce 7.81% | 91,861 | $29.00 |
| Q3 2025 | -9,027 | Reduce 8.31% | 99,643 | $23.95 |
| Q2 2025 | +108,670 | New Buy | 108,670 | $23.61 |
Mario Gabelli's Amentum Holdings Investment FAQs
Mario Gabelli first purchased Amentum Holdings, Inc. (AMTM) in Q2 2025, acquiring 108,670 shares, as reported in their 13F filing for that period. Note: Analysis reflects filings available since Q2 2013; earlier records may be incomplete.
Mario Gabelli has held Amentum Holdings, Inc. (AMTM) for 3 quarters since Q2 2025.
Mario Gabelli's largest addition to Amentum Holdings, Inc. (AMTM) was in Q2 2025, adding 108,670 shares worth $2.57 M.
According to the latest 13F filing for Q4 2025, Mario Gabelli's firm, Gamco Investors, Inc. Et Al, owns 91,861 shares of Amentum Holdings, Inc. (AMTM), valued at approximately $2.66 M.
As of the Q4 2025 filing, Amentum Holdings, Inc. (AMTM) represents approximately 0.03% of Mario Gabelli's publicly disclosed stock portfolio, making it one of their key holdings.
Mario Gabelli's peak holding in Amentum Holdings, Inc. (AMTM) was 108,670 shares, as reported at the end of Q2 2025.