Onsemi Stock Rises 5% as Free Cash Flow Quadruples
onsemi (NASDAQ:ON) shares rose about 6% premarket after Q2 results. Revenue increased 9% to $1.60B, above analysts’ $1.589B estimate. Non-GAAP EPS was $0.74 vs $0.71 consensus. Free cash flow rose to $425.4M, up from about a quarter earlier, with FCF margin 27%. Q3 guidance: revenue $1.65B-$1.75B, non-GAAP EPS $0.81-$0.93.
How this was made

The 30-second read
Why it matters
The combination of an earnings beat, a large free-cash-flow improvement, and specific Q3 guidance creates a clear catalyst for traders to reprice near-term fundamentals and buyback expectations.
Market read
Cash generation and margin expansion, plus Q3 guidance, are the core drivers behind the stock’s premarket jump.
What to watch
The article mentions multiple initiatives (Synaptics acquisition, MGX role, GaN portfolio, Rivian win), but does not quantify their near-term financial impact beyond the headline guidance ranges.
Background
onsemi is a power and sensing semiconductor supplier serving automotive, industrial, and data-center end markets.
Ticker impact
onsemi reported Q2 revenue of $1.60B, non-GAAP EPS $0.74, and guided Q3 revenue $1.65B to $1.75B alongside a major free-cash-flow surge.
Bullish bias with potential follow-through if investors focus on cash generation and margin durability.
The article provides multiple concrete, decision-relevant datapoints: earnings beat, FCF quadrupling to $425.4M, FCF margin expansion to 27%, and explicit Q3 guidance ranges.
Market effects
Strength in power and sensing chip cash generation can improve sentiment toward automotive, industrial, and data-center semiconductor demand.
Primarily US-listed semiconductor sentiment; limited direct regional linkage beyond broader chip risk appetite.
AI data-center growth commentary and MGX ecosystem expansion may influence global peers’ read-through on power-silicon demand.
Counterpoint
FCF margin expansion may be partly timing-driven; investors could fade the move if margins normalize or guidance is not sustained.
Key entities
- companyonsemi
Reported Q2 results with free cash flow quadrupling and issued Q3 guidance.
- companySynaptics
Named as the acquisition target agreed by onsemi.
- companyNvidia
Named for onsemi’s expanded role in Nvidia’s MGX ecosystem.
- companyRivian
Named for onsemi winning power business on Rivian’s R2 platform.