Permian Investment Partners, LP: AMENTUM HOLDINGS INC (AMTM): Quarterly 13F Position History
As of Q2 2026, Permian Investment Partners, LP reported 1,433,028 shares of AMENTUM HOLDINGS INC (AMTM), worth $29.6M and representing 3.4% of its 13F equity book. Quarter-over-quarter share count change: 133,972 (-8.5%) . The position first appeared in Q1 2026 and has been disclosed across 2 13F-HR filings in Pactolio's tracked window.
- 1,433,028Shares Held (Latest Filing)
- $29.6MReported Market Value (Latest Filing)
- 3.4%Portfolio Weight (% of 13F Equity Book)
- 133,972Quarter-over-Quarter Share Change
- -$11.2MQuarter-over-Quarter Value Change
- 1,567,000Peak Reported Shares (Historical)
Recent initiation: Permian Investment Partners, LP first reported AMTM on the Q1 2026 filing, so fewer than three quarters of history are available.
Quarterly 13F-HR Disclosure History Source: SEC 13F-HR filings, 2 quarter s
| Quarter | Shares | QoQ Share Change | Share Change (%) | Market Value | Weight | Implied Price |
|---|---|---|---|---|---|---|
| Q2 2026 | 1,433,028 | 133,972 | -8.5% | $29.6M | 3.4% | $20.7 |
| Q1 2026 | 1,567,000 | – | – | $40.9M | 4.5% | $26.1 |
Methodology & FAQ
How This Position History Is Sourced
Each row is one SEC Form 13F-HR filing disclosing this position. Share count, market value, and reported quarter are taken verbatim from the filing; portfolio weight is recomputed against the same filing's total reported equity book. Implied price-per-share is market value divided by shares, a quarter-end mark rather than the manager's cost basis. See the full methodology document for the normalization rules.
When did Permian Investment Partners, LP first disclose a AMTM position in 13F-HR filings?
Permian Investment Partners, LP first reported AMENTUM HOLDINGS INC (AMTM) on its 13F-HR filing for the period ending 2026-03-31 (Q1 2026). The position has appeared on 2 reported quarters within Pactolio's tracked window.
What was Permian Investment Partners, LP's most recent quarter-over-quarter share-count change in AMTM?
Between Q1 2026 and Q2 2026, Permian Investment Partners, LP reduced its AMTM position by 133,972 shares (-8.5%), leaving 1,433,028 shares at a market value of $29.6M.
Does the implied price-per-share represent Permian Investment Partners, LP's cost basis in AMTM?
No. The implied price-per-share column is the 13F-HR reported market value divided by reported share count on the filing date (end of quarter). It is a quarter-end mark, not a cost basis or transaction price. Use it as a sanity check on the value column, not as an indicator of the manager's entry or exit price.