IPWR vs ON vs POWI vs WOLF

For growth investors, Power Integrations, Inc.

(POWI) is the stronger pick with 5. 9% revenue growth year-over-year, versus -56. 1% for Ideal Power Inc. (IPWR). Power Integrations, Inc. (POWI) offers the better valuation at 184. 2x trailing P/E (58. 7x forward), making it the more compelling value choice. Analysts rate ON Semiconductor Corporation (ON) a "Buy" — based on 46 analyst ratings — the highest consensus in this comparison. The "better buy" depends entirely on your goals: growth investors should weight revenue trajectory, value investors should weight P/E and PEG, and income investors should weight dividend yield and streak.

On trailing P/E, Power Integrations, Inc.

(POWI) is the cheapest at 184. 2x versus ON Semiconductor Corporation at 346. 8x. On forward P/E, ON Semiconductor Corporation is actually cheaper at 33. 7x — notably different from the trailing picture, reflecting expected earnings growth.

Over the past 5 years, ON Semiconductor Corporation (ON) delivered a total return of +160.

4%, compared to -52. 9% for Wolfspeed, Inc. (WOLF). Over 10 years, the gap is even starker: ON returned +1033% versus IPWR's -90. 8%. Past returns do not guarantee future results, and the stock with the higher historical return may already have its best growth priced in.

By beta (market sensitivity over 5 years), ON Semiconductor Corporation (ON) is the lower-risk stock at 1.

91β versus Wolfspeed, Inc. 's 2. 99β — meaning WOLF is approximately 56% more volatile than ON relative to the S&P 500. On balance sheet safety, Ideal Power Inc. (IPWR) carries a lower debt/equity ratio of 5% versus 45% for ON Semiconductor Corporation — giving it more financial flexibility in a downturn.

By revenue growth (latest reported year), Power Integrations, Inc.

(POWI) is pulling ahead at 5. 9% versus -56. 1% for Ideal Power Inc. (IPWR). On earnings-per-share growth, the picture is similar: Ideal Power Inc. grew EPS 9. 4% year-over-year, compared to -92. 0% for ON Semiconductor Corporation. Over a 3-year CAGR, WOLF leads at 9. 8% annualised revenue growth. Higher growth typically commands a higher valuation multiple — check whether the premium P/E or P/S is justified by the growth rate using the PEG ratio.

Power Integrations, Inc.

(POWI) is the more profitable company, earning 5. 0% net margin versus -280. 4% for Ideal Power Inc. — meaning it keeps 5. 0% of every revenue dollar as bottom-line profit. Operating margin tells a similar story: ON leads at 12. 5% versus -289. 8% for IPWR. At the gross margin level — before operating expenses — POWI leads at 54. 5%, reflecting greater pricing power or product mix advantage. Stronger margins indicate durable pricing power, lower cost of revenue, or higher mix of software/services. They are one of the clearest signs of business quality.

On forward earnings alone, ON Semiconductor Corporation (ON) trades at 33.

7x forward P/E versus 58. 7x for Power Integrations, Inc. — 25. 1x cheaper on a one-year earnings basis. Analyst consensus price targets imply the most upside for POWI: 10. 0% to $79. 00.

In this comparison, POWI (1.

2% yield) pays a dividend. IPWR, ON, WOLF do not pay a meaningful dividend and should not be held primarily for income.

For long-horizon retirement investors, ON Semiconductor Corporation (ON) is the stronger choice — it scores higher on the combination of lower volatility, dividend reliability, and long-term compounding (+1033% 10Y return).

Ideal Power Inc. (IPWR) carries a higher beta of 2. 28 — meaning larger drawdowns in market downturns, which matters significantly when you cannot wait years for a recovery. Both have compounded well over 10 years (ON: +1033%, IPWR: -90. 8%), confirming both are viable long-term holds — but the lower-volatility option typically results in less emotional selling during corrections. Retirement portfolios generally favour predictability over maximum returns. Consult a financial advisor before making allocation decisions.

These companies operate in different sectors (IPWR (Industrials) and ON (Technology) and POWI (Technology) and WOLF (Technology)), which means they face different economic cycles, regulatory environments, and macro sensitivities — making direct comparison nuanced.

POWI pays a dividend while IPWR, ON, WOLF do not, making them suitable for different income and tax situations. These fundamental differences mean investors should not choose between them on a single metric — the "better stock" depends entirely on which of these characteristics aligns with your investment strategy.