Mizuho raises ON Semiconductor stock price target on AI server demand By Investing.com

Mizuho raised its price target on ON Semiconductor to $150 from $130 while keeping an Outperform rating, citing AI server ramps, 800-volt architecture adoption, and improving industrial demand. The firm now values ON at 32x fiscal 2027 EPS versus 28x previously, with lead times extending past 40 weeks for some products and capacity remaining tight in AI server MOSFETs. The stock has already surged 193% over the past year, and the article notes broad analyst upward revisions but also elevated valuation at 88.56x P/E.

Analysis

The main second-order implication is not just that ON gets a richer multiple, but that the market is re-rating the entire AI power stack around longer-duration content growth rather than near-term unit growth. That usually favors the names with the cleanest exposure to datacenter power density and the least legacy industrial baggage, which is why ON and ADI can keep outperforming even if end-demand is choppy. The same dynamic also increases the odds of multiple expansion fatigue: once a stock is priced for several years of flawless execution, any evidence of order normalization can trigger a sharp de-rating even if fundamentals remain solid.

The more interesting competitive angle is that tight capacity in high-spec power components can create a temporary moat for suppliers with the best mix, but it also invites substitution risk over a 6-18 month horizon. If lead times stay stretched, hyperscalers and OEMs will accelerate dual-sourcing and redesigns, which tends to compress pricing power later in the cycle. That is especially relevant for ON versus TXN: TXN’s broader analog franchise gives it more ballast, while ON’s upside is more concentrated in the AI power theme and therefore more exposed if datacenter capex growth decelerates.

The contrarian view is that the market may be overpaying for the narrative that every AI server content dollar is equally durable. In practice, the first wave of AI power spend is often the easiest to capture, but later phases face efficiency gains, architecture shifts, and customer bargaining pressure that can reduce attach rates. If the next couple of quarters show strong bookings but weaker forward commentary on 800V ramp timing or industrial recovery, the stock could gap down materially because expectations are already stretched.

From a portfolio perspective, the best expression is to own the winners with a defined exit rather than chase outright beta. The setup favors names with accelerating estimate revisions and a clearer path to margin leverage, but it also argues for using options or pairs to reduce valuation risk. The key catalyst window is the next 1-2 earnings prints, where management commentary on backlog, customer diversification, and mix will matter more than the headline growth rate.

Key Decisions for Investors

• Stay long ON into the next earnings window, but express it via a call spread rather than stock; the asymmetry is better if the company confirms sustained AI power demand, while valuation risk is capped if growth merely meets expectations.
• Pair long ON / short TXN on a 3-6 month horizon if you want pure AI power exposure; ON has more upside torque to 800V and server ramps, while TXN is the cleaner hedge if the analog cycle broadens and the AI premium compresses.
• Add ADI on pullbacks as the lower-beta beneficiary of the same power-density theme; use it as a relative-quality long versus ON if you want less downside from multiple compression.
• Fade the move with a tactical short only if guidance implies order normalization or slower conversion of lead times into revenue; in that case, look for 15-20% downside over 1-2 quarters as momentum investors unwind.
• Avoid chasing after large upside gaps; if ON rerates another 10-15% without a corresponding upward revision in FY27 estimates, take profits because the risk/reward shifts quickly once the stock trades on perfection.