White Paper
Merger Arbitrage: Opportunity in Regulatory Complexity

The strategic importance of mergers & acquisitions (M&A) appears to be increasing in today’s complex macroeconomic environment. Rapid technological disruption, supply chain reorientation, and deglobalization trends have increased the value of scale across many industries, as evidenced by expanding valuation premiums for larger companies. At the same time, companies expect to derive greater value than ever from strategic combinations, with estimated transaction synergies continuing to trend higher.


Meanwhile, global M&A activity is recovering following a cyclical slowdown in 2023 and 2024, when deal volumes fell to their lowest level relative to GDP in more than three decades amid heightened antitrust scrutiny in the U.S. and tighter financing conditions.

Today, despite the improved U.S. antitrust environment, global regulatory complexity has increased. Large transactions now frequently require review under multiple antitrust, foreign investment, national security, and sector-specific regulatory regimes across numerous jurisdictions, often resulting in extended approval timelines.

For merger arbitrage investors, complexity creates opportunity. The largest and most complicated transactions can offer attractive risk-adjusted returns for those capable of underwriting an increasingly multijurisdictional regulatory process. With mega deals representing the highest share of overall deal volume in over a decade, the opportunity set is robust.

As an investment strategy, merger arbitrage combines the yield characteristics of fixed income with idiosyncratic, event-driven return catalysts, while generally offering greater liquidity and shorter duration than credit instruments with comparable yields. Because returns are driven primarily by transaction-specific outcomes rather than market beta, merger arbitrage can provide attractive diversification benefits alongside credit-oriented strategies within an absolute return portfolio, which can result in managers having a greater ability to be opportunistic during times of spread dislocation.

While artificial intelligence (AI) tools can increasingly assist in analyzing transaction data and regulatory filings, large and complex deals remain highly idiosyncratic. With greater regulatory complexity, we believe differentiated research, local expertise, and on-the-ground diligence are critical for maximizing risk-adjusted returns.