Smurfit Westrock plc (SW) Income Statement

The 2025Q3 spike of 16.2% growth appears to reflect the full consolidation of WestRock, but by 2026Q2 growth has flattened to just 1.1% sequentially. This suggests that the initial revenue synergies may be fading, and organic volume growth is not yet compensating. Investors should monitor whether the company can re-accelerate growth through pricing or volume, as the current trajectory indicates a maturing post-merger phase.

The gross margin has declined by over 300 basis points year-over-year, and the 2026Q2 level of 17.4% is well below the peer average of around 21-29%. This suggests that SW may be facing higher fiber and energy costs, or that it lacks pricing power in a competitive packaging market. The margin compression appears structural rather than temporary, as it has persisted for several quarters, and may continue to weigh on profitability.

The 49% drop in operating income on a mere 0.4% revenue decline highlights that fixed costs are not being absorbed efficiently. SG&A expenses have remained relatively stable around $900-970M, while gross profit has shrunk, causing operating margins to compress from 7.6% to 3.8%. This suggests that the company's cost structure is too heavy for the current revenue base, and management may need to rationalize overhead to restore profitability.

While COGS has declined proportionally with revenue, SG&A has not adjusted, remaining at roughly 12-14% of revenue. This suggests that the merger has not yet delivered the expected cost synergies, or that integration-related expenses are offsetting savings. The lack of SG&A reduction is a key drag on operating margins, and management's ability to control these costs will be critical for margin recovery.