Jeremy Grantham's AMTM Position Overview
Jeremy Grantham (via Grantham, Mayo, Van Otterloo & Co. LLC) currently holds 21,601 shares of Amentum Holdings, Inc. (AMTM) worth $446,493, representing 0.00% of the portfolio. First purchased in 2025-Q3, this short-term holding has been held for 4 quarters.
Based on 13F filings, Jeremy Grantham has maintained this position in AMTM for several quarters, showing initial confidence in the investment. Largest addition occurred in Q2 2026, adding 21,601 shares. Largest reduction occurred in Q1 2026, reducing 10,457 shares.
Analysis based on 13F filings available since 2013 Q2
Jeremy Grantham's Amentum Holdings (AMTM) Holding Value Over Time
Track share changes against reported price movement
Quarterly Amentum Holdings (AMTM) Trades by Jeremy Grantham
| Report Date | Bought/Sold (Sh.) | % Change | Qtr. End Shares | Reported Price |
|---|---|---|---|---|
| Q2 2026 | +21,601 | New Buy | 21,601 | $20.67 |
| Q1 2026 | -10,457 | Sold Out | 0 | $0.00 |
| Q3 2025 | +10,457 | New Buy | 10,457 | $23.95 |
Jeremy Grantham's Amentum Holdings Investment FAQs
Jeremy Grantham first purchased Amentum Holdings, Inc. (AMTM) in Q3 2025, acquiring 10,457 shares, as reported in their 13F filing for that period. Note: Analysis reflects filings available since Q2 2013; earlier records may be incomplete.
Jeremy Grantham has held Amentum Holdings, Inc. (AMTM) for 4 quarters since Q3 2025.
Jeremy Grantham's largest addition to Amentum Holdings, Inc. (AMTM) was in Q2 2026, adding 21,601 shares worth $446,493.
According to the latest 13F filing for Q2 2026, Jeremy Grantham's firm, Grantham, Mayo, Van Otterloo & Co. LLC, owns 21,601 shares of Amentum Holdings, Inc. (AMTM), valued at approximately $446,493.
As of the Q2 2026 filing, Amentum Holdings, Inc. (AMTM) represents approximately 0.00% of Jeremy Grantham's publicly disclosed stock portfolio, making it one of their key holdings.
Jeremy Grantham's peak holding in Amentum Holdings, Inc. (AMTM) was 21,601 shares, as reported at the end of Q2 2026.