Power Integrations went into this earnings print with a rich P/E of 131.1x and a stock that had already slipped over the past quarter. The immediate reaction was harsh. The share price fell 4.8% today to US$58.98. That move jars with a quarter that showed clear earnings progress.

Revenue reached US$118.9m and non GAAP operating margin reached 17.1%. Free cash flow was about US$18m. The real story for you is not a broken thesis. It is a valuation heavy stock that just posted a solid margin step up and nudged guidance higher.

Is Power Integrations on a justified growth multiple at 131.1x P/E, or has the market priced in too much earnings optimism already? Compare the current valuation drivers in our valuation analysis for Power Integrations.

Q2 2026 Earnings Summary

• Revenue, Q2 2026 vs. Q2 2025: US$118.9m vs. US$115.9m (up about 3%)
• Net Income, Q2 2026 vs. Q2 2025: US$9.8m vs. US$1.4m (very large increase)
• Basic EPS, Q2 2026 vs. Q2 2025: US$0.18 vs. US$0.02 (very large increase)
• Non GAAP Operating Margin, Q2 2026 vs. Q1 2026: 17.1% vs. roughly 11.7% (expansion of about 540 basis points quarter on quarter)

Prefer clear charts instead of scrolling through dense tables of Power Integrations figures? See the full visual breakdown of the stock, including its valuation picture at a glance, in our company report for Power Integrations.

Power Integrations Starts To Prove The High‑Voltage Pivot

The bullish story on Power Integrations is that a pivot into high voltage GaN and system level products will replace softer legacy demand with higher quality growth and better margins. Q2 gives some concrete proof points. Revenue is only up modestly year on year, yet non GAAP operating margin has stepped up to 17.1% with guidance pointing to 17 to 19% in Q3. That supports the idea that a richer product mix and tighter cost control are starting to work.

On the technology side, the 2,200 V PowiGaN launch and NVIDIA aligned 800 V auxiliary rack designs show the company is building the product set required for AI data centers, EVs and energy infrastructure. Automotive revenue is set to double this year and a Tier 1 micro DC DC, direct current to direct current, win for next year adds another early milestone. The long dated revenue targets are not proven yet, but the operational markers are moving in the right direction.

Compare these margin gains and new product wins with how institutions are resetting their expectations. See the consensus price target analysis for Power Integrations

Power Integrations Bear Case Still Has Teeth

Bearish investors argue that Power Integrations is shifting into high power and automotive before the new engines are large enough to offset structurally weaker legacy businesses. Q2 and the Q3 outlook do not fully remove that worry. Revenue grew only modestly year on year and guidance points to steady rather than sharp acceleration. That matters given prior multiyear declines in revenue, operating margin and EPS.

The risk that GaN adoption and AI or EV ramps arrive later than hoped is also still on the table. The 2,200 V PowiGaN platform is a technology demo, not a shipping product, and management talks in multi year timelines for both high voltage data center and larger automotive contributions. With the stock down about 19% over 90 days, the market reaction hints that solid margin progress alone has not yet disproved concerns about timing, scale and execution of the pivot.

After a period of volatile trading, insider selling, and one-off items, you might wonder whether this is just the surface. Review our full risk analysis for Power Integrations which shows 4 important warning signs

Stay Ahead With Simply Wall St

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This article by Simply Wall St is general in nature. We provide commentary based on historical data and analyst forecasts only using an unbiased methodology and our articles are not intended to be financial advice. It does not constitute a recommendation to buy or sell any stock, and does not take account of your objectives, or your financial situation. We aim to bring you long-term focused analysis driven by fundamental data. Note that our analysis may not factor in the latest price-sensitive company announcements or qualitative material. Simply Wall St has no position in any stocks mentioned.