ON Semiconductor: Overbought Rally Stretches Valuation Ahead of Slow Recovery

What happened

ON Semiconductor's recent sharp rally has pushed its P/E to 35.1x forward earnings, well above historical norms, while FQ1'26 results and guidance remain underwhelming and dependent on a slow auto/industrial recovery that may not materialize until 2027. AI data center revenue is growing but from a small base, and the broader top-line impact from new design wins is still years away. The DeepValue report confirms limited margin of safety with a WAIT rating and an attractive entry near $50 versus the current ~$60. Management's aggressive $6B buyback and ambitious 2027 margin targets create execution risk if the cyclical rebound disappoints. The stock now prices in a clean recovery that the underlying business trends do not yet support, making the risk/reward unattractive.

Implication

Investors should reduce positions into strength and wait for a better entry around $50, where the margin of safety improves. The thesis requires clear evidence of auto revenue growth and gross margin expansion into the low-40s before adding exposure. The $6B buyback provides some support but cannot compensate for a structural earnings miss.

Thesis delta

The narrative has shifted from a neutral wait/hold to a more overtly cautious stance, as the stock's overbought condition and high valuation now reflect a recovery that remains uncertain and slow. The risk of a pullback has increased, and the margin of safety has evaporated, reinforcing the need for patience and a disciplined entry.