Hedge Fund

ATLANTIC INVESTMENT MANAGEMENT, INC.

New York, NY SEC Registered Investment Advisor Institutional CIK: 0001063296
13F Score ?
4
3Y · Top 10 · Mgr Wt
13F Score ?
7
7Y · Top 10 · Mgr Wt
S&P 500 ?
80
Benchmark
$178M
AUM
+13.49%
2025 Q4
+13.51%
1-Year Return
+100.00%
Top 10 Concentration
+42.06%
Turnover
+2.00%
AUM Change
Since 2001
First Filing
11
# of Holdings

Fund Overview

13F Filed: 2026-02-17

As of 2025 Q4, Atlantic Investment Management, Inc. manages $178M in reported 13F assets , holds 11 positions with +100.00% top-10 concentration , and delivered a 1-year return of +13.51% on its disclosed equity portfolio. Filing 13F reports since 2001.

About

Investment Strategy

Analytics Summary

Risk Profile

Key Personnel

Alexander Roepers — Founder, President & Chief Investment Officer
Official 13F Filings — SEC EDGAR Key personnel and Fund Overview may contain mistakes

Activity Summary — 2025 Q4

Q4 2025 13F Filed: Feb 17, 2026

Top Buys

% $
Stock % Impact
+13.83%
+12.26%
+6.80%
+6.32%
+4.76%
+0.05%

Top Sells

% $
Stock % Impact
Sold All 😨 Was: 16.95% -16.62%
Sold All 😨 Was: 7.26% -7.11%
Sold All 😨 Was: 4.81% -4.72%
-3.76%
-3.01%
DOLE DOLE PLC..
Sold All 😨 Was: 2.55%
-2.50%

Top Holdings

2025 Q4
Stock %
18.63%
13.83%
12.26%
11.82%
10.93%
10.13%
View All Holdings

Activity Summary

Latest
Market Value $178M
AUM Change +2.00%
New Positions 4
Increased Positions 2
Closed Positions 5
Top 10 Concentration +100.00%
Portfolio Turnover +42.06%
Alt Turnover +43.04%

Sector Allocation Trends

Quarterly History
Free View: Last 10 Quarters. Subscribe to see full history

Holdings Analysis

Size: % of Portfolio Color: Last Full-Quarter Return No data
Free: 10 quarters

Positions Dynamics

Visualizing Top 20 holdings weight history over the last 10 quarters.

Portfolio Analytics — Latest

ATLANTIC INVESTMENT MANAGEMENT, INC. risk dashboard covering volatility, beta, value-at-risk, drawdowns, concentration, factor tilts, benchmark comparison, and stress testing for the latest disclosed portfolio.

Risk access
Building institutional risk profile...
Guru Intelligence Hub Pro
Real-time Analytics
High-Conviction Alpha
AAPL 92.4
NVDA 88.1
MSFT 74.3
Strategy Guardian
Style Drift 0.12
Sector Rotation 0.38

Tracking institutional benchmark deviation

Scenario Lab
2008 GFC -32.4%
Covid-19 -18.1%
2022 Bear -24.7%
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Real conviction scores for every holding  ·  Strategy Guardian alerts  ·  Live Scenario Lab stress tests
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Best Strategy vs. Benchmarks

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Returns
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Latest Quarter
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1-Year Return
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Ann. Return
Risk
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Std Deviation
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Max Drawdown
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Beta vs SPY
Quality
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Sharpe
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Sortino
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Win Rate
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Payoff Ratio
Edge Metrics Last 10 quarters only
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Alpha annualized
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Up Capture
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Down Capture

Strategy Backtester: ATLANTIC INVESTMENT MANAGEMENT, INC.

Replicate top holdings performance • Compare vs benchmarks • Optimize N

Find the best N! Test multiple portfolio sizes at once to discover the optimal configuration.

Risk insights! Identify periods when the fund lagged the benchmark – critical for timing entries.

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+127%
Avg. Return

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Underperformance Analysis — Top 10 Holdings vs SPY

Backtesting ATLANTIC INVESTMENT MANAGEMENT, INC.'s top 10 holdings against SPY identified 71 underperformance periods. Worst drawdown: 2024-09 – 2025-05 (-41.1% vs SPY, 9 quarters). Currently underperforming.

Avg. lag: -9.9% vs SPY Avg. duration: 2.2 quarters
Backtest Snapshot — Top 10 Holdings (Mn-Weighted)

The ticker-level breakdown shows how each of ATLANTIC INVESTMENT MANAGEMENT, INC.'s top holdings contributed to portfolio returns quarter by quarter. Strongest recent contributors inside the last 5 years of the quarterly Top 10 backtest window: GTLS (2024 Q2 – 2025 Q3, +8.0 pts), OSK (2024 Q4 – 2025 Q3, +6.9 pts), FLS (2022 Q3 – 2024 Q2, +6.8 pts), TKR (2021 Q4 – 2024 Q1, +6.5 pts), WCC (2023 Q1 – 2025 Q1, +5.9 pts) .

Strategy ann.: 0.2% SPY ann.: 8.8% Period: 2001–2026
Best Recent Contributors — Last 5Y
2 of 5 recent top contributors lagged SPY, which means even some of this fund's best return drivers still failed to beat a simple index over the same window.
2024 Q2 – 2025 Q3 • 6Q in Top 10 Beat SPY
GTLS
+87%
SPY
+28%
Contrib
+8.0%
2024 Q4 – 2025 Q3 • 4Q in Top 10 Beat SPY
OSK
+59%
SPY
+13%
Contrib
+6.9%
2022 Q3 – 2024 Q2 • 8Q in Top 10 Beat SPY
FLS
+81%
SPY
+55%
Contrib
+6.8%
2021 Q4 – 2024 Q1 • 10Q in Top 10 Lagged SPY
TKR
+24%
SPY
+29%
Contrib
+6.5%
2023 Q1 – 2025 Q1 • 9Q in Top 10 Lagged SPY
WCC
+59%
SPY
+61%
Contrib
+5.9%
Stock return (green = beat SPY)   Stock return (red = lagged SPY)   SPY same period   Cumulative contribution during the last 5 years of the quarterly Mn-weighted Top 10 strategy

Frequently Asked Questions

What does Atlantic Investment Management, Inc. invest in?
Atlantic Investment Management, Inc. employs a concentrated activist value investment philosophy focused on building significant positions in undervalued mid-cap companies where constructive engagement with management can catalyze shareholder value realization. The firm's approach reflects Alexander Roepers' conviction that concentrated ownership positions combined with informed dialogue with corporate leadership creates superior investment outcomes compared to passive value investing in diversified portfolios. **13F Portfolio Composition** analysis reveals highly concentrated positioning with observable emphasis on industrials and consumer sectors, reflecting preference for tangible businesses with identifiable operational improvement opportunities, capital allocation inefficiencies, or strategic alternatives that may unlock embedded value. **Top 10 Holdings Concentration** tracking through the platform demonstrates exceptional position concentration characteristic of activist investors with differentiated research capabilities and willingness to engage directly with portfolio companies. The activist orientation distinguishes Atlantic from passive value managers, as the firm seeks not merely to identify undervaluation but to catalyze corporate actions including operational restructuring, capital return programs, strategic transactions, or governance improvements that accelerate value recognition timelines. The investment process incorporates exhaustive fundamental research examining asset values, earnings power, competitive positioning, and management quality alongside assessment of engagement leverage and corporate receptivity to shareholder input. Low to moderate turnover reflects patient capital deployment allowing activist theses to develop through engagement cycles.
What is Atlantic Investment Management, Inc.'s AUM?
Atlantic Investment Management, Inc. reported $178M in 13F assets as of 2025 Q4. Note: 13F AUM reflects only long equity positions reported to the SEC and may differ from total assets under management.
How concentrated is Atlantic Investment Management, Inc.'s portfolio?
Atlantic Investment Management, Inc. holds 11 disclosed positions. The top 10 holdings represent +100.00% of the reported portfolio, indicating a highly concentrated investment approach.
How to track Atlantic Investment Management, Inc. 13F filings?
Track Atlantic Investment Management, Inc.'s quarterly filings on SEC EDGAR or on this page — data is updated within days of each filing deadline. Subscribe to 13Foresight for position-change alerts.
Who manages Atlantic Investment Management, Inc.?
Atlantic Investment Management, Inc. is managed by Alexander Roepers (Founder, President & Chief Investment Officer).

Disclaimer: 13Foresight is not a registered investment adviser, broker-dealer, or financial planner. All information on this site is provided solely for informational and educational purposes and does not constitute investment advice, a solicitation, or a recommendation to buy or sell any security. Portfolio backtests shown on this page are hypothetical and simulated — they do not represent actual trading results and were constructed with the benefit of hindsight. Actual results would differ materially. 13F filings disclose only long equity positions valued above $10,000, submitted up to 45 days after quarter-end; they do not capture short positions, options, bonds, cash, private investments, or non-U.S. securities. A fund's backtest performance may not reflect its actual returns, as managers frequently generate alpha through strategies not visible in 13F data. Past performance is not indicative of future results. All data sourced from public SEC EDGAR filings. Use at your own risk. Full Terms of Use.

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