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STEWART & STEVENSON SERVICES INC

SIC 3510Engines & Turbinesoperating

Exchange

Entity type

operating

Fiscal year end

Jan 31

Headquarters

TX

Research Summary

AI-assisted · Grounded in filings

Updated Nov 24, 2025

STEWART & STEVENSON SERVICES INC

Stewart & Stevenson Services Inc. operates within the heavy equipment and industrial services space traditionally linked to SIC 3531 (Construction Machinery) and adjacent industrial machinery codes, offering purpose-built power systems, mission-critical engines, and aftermarket support that keep energy, mining, and government fleets running; its core offerings span custom fabrication, modular power units, and lifecycle services tailored for energy producers, utilities, natural resource operators, and defense agencies that demand reliable, compliant gear in harsh environments. The firm’s market positioning targets commercial and public-sector operators needing rapid deployment of power-train solutions, field service technicians, and replacement components, while acknowledging material risks tied to volatile commodity cycles, tariff shifts, and increasingly stringent emissions and defense procurement rules that can delay contracts or require costly redesigns. With public disclosure sparse and latest filings currently unknown, investors should watch regulatory filings and macro trends closely; view live SEC filings on Earnings Feed.