ATLANTIC INVESTMENT MANAGEMENT, INC.: APTIV PLC (APTV): Quarterly 13F Position History
As of Q1 2026, ATLANTIC INVESTMENT MANAGEMENT, INC. reported 322,971 shares of APTIV PLC (APTV), worth $22.4M and representing 13.1% of its 13F equity book. Quarter-over-quarter share count change: + 47,000 (+17.0%) . The position first appeared in Q1 2025 and has been disclosed across 5 13F-HR filings in Pactolio's tracked window.
- 322,971Shares Held (Latest Filing)
- $22.4MReported Market Value (Latest Filing)
- 13.1%Portfolio Weight (% of 13F Equity Book)
- +47,000Quarter-over-Quarter Share Change
- +$1.4MQuarter-over-Quarter Value Change
- 673,971Peak Reported Shares (Historical)
Quarterly 13F-HR Disclosure History Source: SEC 13F-HR filings, 5 quarter s
| Quarter | Shares | QoQ Share Change | Share Change (%) | Market Value | Weight | Implied Price |
|---|---|---|---|---|---|---|
| Q1 2026 | 322,971 | +47,000 | +17.0% | $22.4M | 13.1% | $69.4 |
| Q4 2025 | 275,971 | 29,500 | -9.7% | $21.0M | 11.8% | $76.1 |
| Q3 2025 | 305,471 | 45,500 | -13.0% | $26.3M | 15.1% | $86.2 |
| Q2 2025 | 350,971 | 323,000 | -47.9% | $23.9M | 12.2% | $68.2 |
| Q1 2025 | 673,971 | — | — | $40.1M | 22.4% | $59.5 |
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, not the manager's cost basis. See the full methodology document for the normalization rules.
When did ATLANTIC INVESTMENT MANAGEMENT, INC. first disclose a APTV position in 13F-HR filings?
ATLANTIC INVESTMENT MANAGEMENT, INC. first reported APTIV PLC (APTV) on its 13F-HR filing for the period ending 2025-03-31 (Q1 2025). The position has appeared on 5 reported quarters within Pactolio's tracked window.
What was ATLANTIC INVESTMENT MANAGEMENT, INC.'s most recent quarter-over-quarter share-count change in APTV?
Between Q4 2025 and Q1 2026, ATLANTIC INVESTMENT MANAGEMENT, INC. added 47,000 shares of APTV (+17.0%), bringing the total reported position to 322,971 shares at a market value of $22.4M.
Does the implied price-per-share represent ATLANTIC INVESTMENT MANAGEMENT, INC.'s cost basis in APTV?
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.