Why Is ON Semiconductor Corp. (ON) Up 23% Since Last Earnings Report?

ON Semiconductor (ON) shares have risen approximately 23% since its last earnings report, outperforming the S&P 500, driven by upward trending earnings estimates. Despite a strong Growth Score of B, the stock has a weaker Momentum Score of F and an overall VGM Score of C, with a Zacks Rank #3 (Hold) suggesting an expected in-line return in the coming months. In comparison, NXP Semiconductors (NXPI), another stock in the same industry, has gained 9.1% over the past month but reported a revenue decrease of 9.3% year-over-year for the quarter ended March 2025.

Analysis

ON Semiconductor (ON) has demonstrated significant positive momentum, with its shares appreciating approximately 23% since its last earnings report, thereby outperforming the S&P 500. This surge is attributed to fresh earnings estimates trending upward. Despite this strong share performance and a favorable Growth Score of B, ON exhibits a concerning Momentum Score of F, alongside a Value Score of B, culminating in an overall VGM Score of C. The Zacks Rank #3 (Hold) assigned to ON suggests an expectation of in-line returns over the next few months, potentially indicating that the recent rally might temper. In contrast, industry peer NXP Semiconductors (NXPI) has seen a more modest gain of 9.1% over the past month. NXPI reported a significant 9.3% year-over-year revenue decrease to $2.84 billion for its quarter ended March 2025, with EPS also declining to $2.64 from $3.24 a year ago. NXP's outlook for the current quarter anticipates a further EPS decline of 16.9% year-over-year, and its Zacks Consensus Estimate has seen a slight negative revision of -0.2% recently. NXP also holds a Zacks Rank #3 (Hold) but has a weaker VGM Score of D, reflecting its more challenging fundamental picture compared to ON's recent performance metrics.

Key Decisions for Investors

• Given ON Semiconductor's substantial 23% share price increase and upward trending estimates, investors should acknowledge the recent outperformance but also consider the 'F' Momentum Score and 'Hold' rating, which may signal a period of consolidation or more moderate returns ahead.
• Investors holding or considering ON Semiconductor should weigh its positive Growth (B) and Value (B) metrics against its very weak Momentum (F) and overall neutral VGM (C), suggesting a balanced approach and close monitoring of upcoming catalysts before significantly increasing exposure after the recent rally.
• The declining revenue and earnings profile of NXP Semiconductors, evidenced by a 9.3% YoY revenue drop and projected 16.9% YoY EPS fall for the current quarter, alongside a 'D' VGM score, warrants caution, despite its 'Hold' rating, and may prompt a re-evaluation of its prospects relative to peers exhibiting stronger fundamental trends.