Chipmaker Onsemi reports Q4 revenue down 11% YoY to $1.53B, vs. $1.54B est., as its two biggest business units continue to post sales declines; ON drops 4%+
Context & Ripple Effects
Onsemi's latest result extends a weak run in its largest businesses and was met with an immediate after-hours selloff in ON shares. The near-miss against expectations makes the issue less about a single quarterly surprise than the persistence of sales pressure.
The result sits alongside a broader uneven period for comparable chip suppliers: STMicro reported a 25.3% year-over-year revenue decline and reduced full-year outlook in 2024, followed by a Q3 operating-income drop of 53% in 2025 despite a much smaller revenue decline.
First-order effects
- Onsemi's two largest business units remain in contraction, leaving current revenue performance below the prior-year level and slightly below consensus expectations.
- ON shareholders absorb the immediate repricing: the stock fell more than 4% after hours following the report.
Second-order effects
- The result reinforces scrutiny of whether sales weakness at Onsemi is company-specific or shared across adjacent chip suppliers, particularly after STMicro's repeated revenue declines.
- A sustained shortfall in the biggest units can increase pressure on Onsemi to show where demand is stabilizing, because investors now have both revenue and segment-level weakness to assess.
Third-order effects
- If comparable suppliers continue to pair modest revenue declines with disproportionately weaker operating income, the sector's recovery will be judged increasingly on operating leverage rather than top-line stabilization alone.
- The pattern points to a more selective semiconductor cycle, in which suppliers with concentrated exposure to weak end markets may face longer valuation pressure until their core businesses return to growth.
The trend: Semiconductor investors are shifting from a broad cycle-recovery narrative toward company-by-company evidence that core business-unit demand and profitability have actually bottomed.