Shares of Cummins Inc. dropped as much as 7.5% in pre-market trading to $600, extending a sell-off that began after the company's Q2 2026 earnings report on August 4 revealed a familiar tension: red-hot demand, but rising costs eating into the bottom line. The results force shareholders to weigh whether Cummins' data center windfall can outrun its margin problem.
• Record Sales, But Profits Fell Short of What Wall Street Wanted
Cummins posted record quarterly revenue of $9.46 billion, up 9% year-over-year, while diluted EPS of $6.73 missed analyst expectations of $7.26.
Higher incentive compensation, freight costs, and R&D expenses weighed on margins across multiple segments. That gap — about $0.60 per share below consensus — is what triggered the sell-off. Management says incentive compensation alone will drop roughly $25 million per quarter in the second half, which should help close the margin gap.
• Data Center Power Is Booming, But Cummins Can't Build Fast Enough
North American Power Systems revenue jumped 19%, fueled by data center demand and manufacturing capacity added in late 2025.
China revenue, including joint ventures, surged 30% to $2.3 billion, with power-generation equipment sales in China up a stunning 88%. Yet CEO Jennifer Rumsey said 2026 growth remains constrained by available capacity for larger generators, and CFO Mark Smith noted the company is "generally selling new power-generation equipment into the second half of 2028." That backlog is both a reassurance and a ceiling on near-term upside.
• Management Raised Guidance — A Vote of Confidence Investors Are Discounting
Cummins now expects full-year revenue growth of 10% to 13%, up from 8%–11% prior, and lifted its EBITDA margin target to 18.0%–18.5%.
Rumsey also highlighted a new multi-year agreement with a global hyperscaler for backup power generators. Despite this, the stock at $600 trades well below the average analyst target of $754.86, where 22 analysts rate CMI a consensus "Buy."
• The Bigger Question: Can Margins Catch Up to the Revenue Story?
UBS expects earnings to climb from roughly $30 per share in 2026 toward $41 by 2028, driven by Power Systems scaling.
But R&D spending will stay elevated as Cummins simultaneously develops new truck engine platforms and natural gas generator programs. If costs normalize as management promises, today's dip could look like a gift. If they don't, the stock's premium prices in a future that keeps slipping.