Power Integrations, Inc. (POWI) Stock Price & How to Invest

Power Integrations designs and sells high-voltage analog and mixed-signal integrated circuits used in AC-DC and DC-DC power conversion. Its chips regulate and convert electricity inside phone chargers, appliances, LED lighting, industrial equipment, EV and renewable-energy systems, and data-center power supplies. The company is fabless (it outsources manufacturing), which supports gross margins in the low-to-mid 50 percent range, and it has invested heavily in PowiGaN, its in-house gallium-nitride technology that improves efficiency and shrinks power supplies versus older silicon parts.

The investment picture is a specialized, profitable franchise recovering off a cyclical trough. Full-year 2025 revenue was about $443 million, up roughly 6 percent, and quarterly results in early 2026 showed industrial demand leading the rebound while consumer categories stayed soft. PowiGaN revenue grew more than 40 percent for the year, signaling a mix shift toward higher-value products. The tension for investors is valuation: the stock carries a very high price-to-earnings multiple on GAAP earnings, so the market is pricing in a durable upcycle and continued GaN share gains rather than the low-single-digit growth reported most recently.

Power Integrations is cyclical and heavily exposed to consumer electronics, so demand swings and customer inventory corrections can hit revenue sharply. Its valuation is demanding, with a GAAP price-to-earnings ratio well over 100, leaving little room for disappointment. Competition is intense from far larger power-semiconductor players including onsemi, Infineon, STMicroelectronics, NXP, and Texas Instruments, plus GaN-focused rivals such as Navitas. A large portion of sales flows through Asia, creating concentration, currency, and geopolitical exposure, and the GaN growth thesis could slow if adoption or pricing disappoints.

A simple financial snapshot. These are approximations and refresh quarterly; for current figures see Power Integrations, Inc.'s investor relations page or your broker.

• Revenue (TTM): ~$447M
• Q1 2026 revenue: ~$108M (up ~3% YoY)
• Non-GAAP gross margin: ~53.5%
• Non-GAAP EPS (Q1 2026): ~$0.25
• Market cap: ~$3.9B
• P/E ratio (GAAP): ~230x (elevated)

As of July 2026 the stock trades near the mid-$70s, well off its 52-week high above $90 but far above its low near $31. Revenue is growing in the low single digits off a cyclical trough while GAAP earnings remain depressed, which is why the reported price-to-earnings multiple is extremely high. The valuation reflects expectations for a broader semiconductor upcycle and GaN share gains rather than current earnings.

There are three common ways to get POWI exposure. Buy shares (or fractional shares) directly at any major broker. Hold an ETF that includes it, which spreads the position across many companies. Or build it into a focused thematic basket, so POWI sits alongside other stocks that express the same thesis.

Walnut takes the basket route. Describe a thesis where POWI fits (for example “AI infrastructure” or “dividend-growth large-caps”) and the AI proposes 5 to 6 constituents with target weights. You review the plan and fund it through your own broker when you're ready.

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POWI is a high-margin, cash-generative power-semiconductor specialist whose story hinges on GaN and industrial growth outrunning a premium valuation.

Whether POWI is worth buying today depends more on your time horizon and what you already hold than on any single call. We walk through valuation, what would have to go right, and the risks in is POWI a buy?, and where the stock could go from here in the POWI stock forecast.

For income investors, whether POWI pays a dividend and how the payout looks is covered in does POWI pay a dividend?