Truck Engine Leader Plummets 10% Yesterday, Recovers 8.5 Trillion Won in Just One Day

Cummins Inc. (CMI), a diesel-engine and power-generation equipment manufacturer, surged 6.78% on the New York Stock Exchange to close at $577.73. Its market capitalization jumped by roughly $5.8 billion in a single day, reaching about $79.7 billion.

After yesterday’s earnings release, Cummins shares fell more than 10% on concerns over restructuring costs in its electrolyzer business and tariff headwinds. Today, however, they rebounded on buying interest after Truist raised its price target to $703 and reaffirmed a “buy” rating. Cummins has guided for 3–8% revenue growth by 2026, an EBITDA margin of 17–18%, and intends to return half of its operating cash flow to shareholders.

As a global leader in mid- and heavy-duty truck engines and diesel- and gas-powered generators in North America, Cummins is also expanding its cleaner-power offerings under the Accelera brand—adding hydrogen electrolyzers, batteries, and electric powertrains. While its performance remains sensitive to commercial-vehicle and industrial cycles, growing demand for data-center power and the shift to green commercial fleets is renewing investor interest in Cummins as a long-term growth story.