NVTS vs. SMTC: Which Semiconductor Stock Should You Buy Right Now?

Semtech (SMTC) reported record fiscal Q2 2027 data center revenue of $100 million, up 91% year over year and 39% sequentially, and expects Q3 data center revenue to rise 160% year over year; 1.6T products are projected to exceed 50% of Q3 data center revenue. Its fiscal 2027 backlog was fully booked, with more than 70% of its fiscal 2028 target already covered. The article recommends buying SMTC, trading at 6.81x forward sales, versus holding Navitas (NVTS), which trades at 33.57x and faces near-term revenue volatility from its strategy shift; shares are up 95.9% and 30.4% year to date, respectively.

Analysis

The key distinction is conversion risk, not simply exposure to AI. SMTC’s nearer-term product ramps and customer coverage make its revenue path more observable, but backlog and market-share claims do not establish conversion, margins, or cancellation risk. After a sharp rally, the risk is that any miss in 1.6T shipments, manufacturing capacity, or data-center spending is punished as a de-rating event. Its lower sales multiple versus NVTS is not automatically downside protection: sales multiples can obscure profitability, mix, and execution risk.

NVTS has greater duration and a more fragile bridge between design activity and reported revenue. Exiting established consumer markets before AI and industrial programs reach volume could leave a revenue trough; design wins are not orders. Conversely, if 800V adoption broadens across platforms, its power-semiconductor content could matter beyond the initial AC/DC stage. Incumbent power suppliers and alternative architectures are the second-order constraint; qualification wins do not guarantee durable share.

Near term, avoid chasing SMTC’s momentum. Over 1–3 months, monitor quarterly shipment conversion, data-center gross-margin contribution, customer concentration, and capacity/yield updates. Over 6–18 months, the thesis depends on sustained hyperscaler capex and successive speed/power transitions. A capex pause or customers shifting to alternative optical/power architectures would pressure both names, limiting the hedge value of a pair. Contrarian view: the article treats backlog and relative valuation as comfort, while the market may already be pricing an unusually smooth SMTC ramp; NVTS’s premium is vulnerable, but its upside convexity is also greater if production ramps exceed expectations.

Key Decisions for Investors

• Prefer SMTC over NVTS on relative fundamentals, but do not initiate a full position after the reported rally; scale in on weakness or after results confirm 1.6T shipment conversion and data-center margin contribution.
• For a defined-risk relative view, consider a modest long SMTC / short NVTS pair, sized below a standalone semiconductor position. It is a relative-execution trade, not a hedge against AI-capex weakness; reduce or close if SMTC misses shipment guidance or NVTS demonstrates sustained production revenue beyond design-ins.
• Treat NVTS as a watchlist/optionality position rather than a core AI-data-center holding until legacy-revenue runoff is quantified and new-program production ramps are visible. Verify revenue mix, customer qualification-to-volume timing, and cash needs before adding.
• Falsify the SMTC thesis if backlog coverage converts poorly, capacity constraints impair delivery, or 1.6T contribution fails to grow; reassess NVTS if consumer-market declines outpace high-power revenue growth or 800V deployment slips beyond the expected 2027 window.