Atlantic Investment Management, Inc. holds a concentrated book of 12 reported positions worth $192.0M as of Q2 2026 (disclosed Aug 14, 2026, a ~45-day 13F lag). This quarter they opened Ashland Inc and trimmed Kirby Corp. Their largest long position is Ashland Inc at 17% of the reported non-option book. Cloning the disclosed picks since 2013 would be -5% (-0.4%/yr). That is a simulation of the disclosed long book, not audited returns.
The reported book (valued from quarter-end) returned +42.1%, a 47.6-point gap that is the cost of the ~45-day 13F disclosure lag a real follower can't avoid.
Growth of $10,000 cloning Atlantic Investment Management, Inc.'s disclosed long 13F book, rebalanced on each filing date (so it reflects each quarter's actual reporting lag, ~45 days for the latest filing, with no look-ahead), total-return basis (dividends reinvested), derived from end-of-day prices. “Their reported book” values the same picks from quarter-end, before they were public. S&P 500 is SPY total return over the same window. Excludes shorts, cash, options and non-13F holdings. Not investment advice.
Top-heavy: concentrated book
Share of the disclosed book in its largest positions. A higher top-5 share means a more concentrated, higher-conviction portfolio.
100% mapped to company sectors
+1 sector below the cut, under 0.5% together
Direct operating-company sectors from our SIC-based security master. ETF/fund and unclassified holdings stay visible separately; this is not ETF look-through exposure.
Estimated $ traded · quarter-end prices (an exit at the prior quarter-end), no cost basis
Other tracked managers holding the same core names as Atlantic Investment Management, Inc.
| Manager / fund | Shared names | Their $ in those |
|---|---|---|
| Brickwood Asset Management LLP | 2 / 12 | $31.6M |
| Oceanic Investment Management LTD | 2 / 12 | $11.0M |
| Invenomic Capital Management LP | 4 / 12 | $141.3M |
| Lodge Hill Capital, LLC | 2 / 12 | $42.2M |
| Foresight Group Ltd Liability Partnership | 2 / 12 | $32.9M |
| DME Capital Management, LP | 3 / 12 | $201.5M |
| Encompass Capital Advisors LLC | 2 / 12 | $129.0M |
| Cruiser Capital Advisors, LLC | 2 / 12 | $7.1M |
Ranked by the share of each fund's own book sitting in the names it shares with Atlantic Investment Management, Inc.: only funds sharing at least a tenth of the book qualify. Index giants, bank custody books and market makers are excluded. They hold everything, so their overlap says nothing.
Bars show each position's share of the portfolio. Click a row for its position history.
| # | Security | Value | Shares | % Port | Last move | History |
|---|---|---|---|---|---|---|
| 1 | Ashland Inc COM | $33.5M | 509.0K | 17.5% | ▲New New position | |
| 2 | Aptiv PLC COM SHS | $27.9M | 453.8K | 14.5% | ▲+41% Added · +131K sh | |
| 3 | Kirby Corp COM | $25.4M | 186.7K | 13.2% | ▼−27% Reduced · −70K sh | |
| 4 | Dentsply Sirona Inc COM | $23.4M | 2.20M | 12.2% | ▲+261% Added · +1.6M sh | |
| 5 | PVH Corporation COM | $19.0M | 256.4K | 9.9% | ▲+100% Added · +128K sh | |
| 6 | Nomad Foods Ltd USD ORD SHS | $14.6M | 1.33M | 7.6% | ▲+0.1% Added · +1K sh | |
| 7 | Abm Inds Inc COM | $13.6M | 308.3K | 7.1% | ▲+40% Added · +88K sh | |
| 8 | Oshkosh Corp COM | $12.8M | 83.7K | 6.7% | ▼−39% Reduced · −53K sh | |
| 9 | Dauch Corp COM | $7.6M | 1.40M | 4.0% | ▼−63% Reduced · −2.4M sh | |
| 10 | Versigent PLC ORDINARY SHARES | $5.1M | 120.7K | 2.6% | ▲New New position | |
| 11 | Weatherford Intl PLC ORD SHS | $4.8M | 59.0K | 2.5% | ▼−72% Reduced · −153K sh | |
| 12 | National Energy Services Reu SHS | $4.2M | 140.0K | 2.2% | ▲+133% Added · +80K sh |
This fund page is the Follow view. The Build view lets your agent pull holdings, quarter changes, overlap, and source filings through API or MCP.
curl -H "Authorization: Bearer YOUR_API_KEY" \ "https://arkolith.com/api/v1/funds/1063296/holdings"
Use Arkolith to show ATLANTIC INVESTMENT MANAGEMENT, INC.'s latest holdings, largest changes, and filing provenance.
As-of date vs the date the SEC received each filing
Reported 13F total per quarter. Raw filing totals can include option notional.
| Quarter | As of | Filed | Lag | Positions | Value | Form |
|---|---|---|---|---|---|---|
| Q2 2026 | Jun 30, 2026 | Aug 14, 2026 | 45d | 12 | $192.0M | 13F-HR |
| Q1 2026 | Mar 31, 2026 | May 15, 2026 | 45d | 12 | $171.7M | 13F-HR |
| Q4 2025 | Dec 31, 2025 | Feb 17, 2026 | 48d | 10 | $177.6M | 13F-HR |
| Q3 2025 | Sep 30, 2025 | Nov 14, 2025 | 45d | 11 | $174.1M | 13F-HR |
| Q2 2025 | Jun 30, 2025 | Aug 14, 2025 | 45d | 11 | $196.0M | 13F-HR |
| Q1 2025 | Mar 31, 2025 | May 15, 2025 | 45d | 9 | $179.0M | 13F-HR |
| Q4 2024 | Dec 31, 2024 | Feb 14, 2025 | 45d | 10 | $207.0M | 13F-HR |
| Q3 2024 | Sep 30, 2024 | Nov 14, 2024 | 45d | 7 | $204.8M | 13F-HR |
| Q2 2024 | Jun 30, 2024 | Aug 14, 2024 | 45d | 12 | $221.9M | 13F-HR |
| Q1 2024 | Mar 31, 2024 | May 15, 2024 | 45d | 11 | $227.8M | 13F-HR |
| Q4 2023 | Dec 31, 2023 | Feb 14, 2024 | 45d | 10 | $219.0M | 13F-HR |
| Q3 2023 | Sep 30, 2023 | Nov 14, 2023 | 45d | 9 | $200.7M | 13F-HR |
| Q2 2023 | Jun 30, 2023 | Aug 14, 2023 | 45d | 9 | $203.1M | 13F-HR |
| Q1 2023 | Mar 31, 2023 | May 15, 2023 | 45d | 9 | $185.4M | 13F-HR |
| Q4 2022 | Dec 31, 2022 | Feb 14, 2023 | 45d | 9 | $184.8M | 13F-HR |
| Q3 2022 | Sep 30, 2022 | Nov 14, 2022 | 45d | 10 | $221.4M | 13F-HR |
| Q2 2022 | Jun 30, 2022 | Aug 15, 2022 | 46d | 11 | $263.9M | 13F-HR |
| Q1 2022 | Mar 31, 2022 | May 16, 2022 | 46d | 11 | $309.7M | 13F-HR |
| Q4 2021 | Dec 31, 2021 | Feb 14, 2022 | 45d | 10 | $358.0M | 13F-HR |
| Q3 2021 | Sep 30, 2021 | Nov 15, 2021 | 46d | 11 | $297.7M | 13F-HR |
| Q2 2021 | Jun 30, 2021 | Aug 16, 2021 | 47d | 9 | $318.5M | 13F-HR |
| Q1 2021 | Mar 31, 2021 | May 18, 2021 | 48d | 10 | $323.3M | 13F-HR/A |
| Q4 2020 | Dec 31, 2020 | Feb 16, 2021 | 47d | 10 | $299.5M | 13F-HR |
Holdings from SEC EDGAR 13F-HR filings, updated quarterly, filed up to 45 days after quarter-end. Public domain. Book totals and portfolio weights cover reported non-option positions, which can include notes and warrants. Disclosed put/call options are listed separately and excluded from those totals. The performance line is a simulation of the disclosed long book, not an audited return.