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AMTM position history

The shares of Amentum (AMTM) that Ruane, Cunniff & Goldfarb L.P. reported in each quarter’s 13F.

Equity, COM

Shares held by quarter

New Add Reduce Exit

  1. 2024 Q3: 2,530,489 shares, $82M, 1.3% of portfolio, New
  2. 2024 Q4: 2,436,294 shares, $51M, 0.87% of portfolio, Reduce −3.7%
  3. 2025 Q1: 2,393,039 shares, $44M, 0.79% of portfolio, Reduce −1.8%
  4. 2025 Q2: 2,441,743 shares, $58M, 0.99% of portfolio, Add +2.0%
  5. 2025 Q3: 2,423,748 shares, $58M, 0.96% of portfolio, Reduce −0.7%
  6. 2025 Q4: 2,394,129 shares, $69M, 1.1% of portfolio, Reduce −1.2%
  7. 2026 Q1: 1,622,982 shares, $42M, 0.70% of portfolio, Reduce −32.2%
  8. 2026 Q2: 537,213 shares, $11M, 0.17% of portfolio, Reduce −66.9%
Holdings date Value % of holdings Shares Filing date All 13F holders