OESX vs POWI vs MPWR vs LEDS

For growth investors, SemiLEDs Corporation (LEDS) is the stronger pick with 729.

8% revenue growth year-over-year, versus -12. 0% for Orion Energy Systems, Inc. (OESX). Monolithic Power Systems, Inc. (MPWR) offers the better valuation at 123. 6x trailing P/E (73. 1x forward), making it the more compelling value choice. Analysts rate Power Integrations, Inc. (POWI) a "Buy" — based on 16 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, Monolithic Power Systems, Inc.

(MPWR) is the cheapest at 123. 6x versus Power Integrations, Inc. at 184. 2x. On forward P/E, Power Integrations, Inc. is actually cheaper at 55. 5x — notably different from the trailing picture, reflecting expected earnings growth.

Over the past 5 years, Monolithic Power Systems, Inc.

(MPWR) delivered a total return of +366. 2%, compared to -83. 6% for Orion Energy Systems, Inc. (OESX). Over 10 years, the gap is even starker: MPWR returned +24. 9% versus OESX's -32. 5%. 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), Orion Energy Systems, Inc.

(OESX) is the lower-risk stock at 1. 10β versus Monolithic Power Systems, Inc. 's 2. 28β — meaning MPWR is approximately 108% more volatile than OESX relative to the S&P 500. On balance sheet safety, Monolithic Power Systems, Inc. (MPWR) carries a lower debt/equity ratio of 1% versus 144% for SemiLEDs Corporation — giving it more financial flexibility in a downturn.

By revenue growth (latest reported year), SemiLEDs Corporation (LEDS) is pulling ahead at 729.

8% versus -12. 0% for Orion Energy Systems, Inc. (OESX). On earnings-per-share growth, the picture is similar: SemiLEDs Corporation grew EPS 53. 1% year-over-year, compared to -65. 2% for Monolithic Power Systems, Inc.. Over a 3-year CAGR, LEDS leads at 82. 7% 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.

Monolithic Power Systems, Inc.

(MPWR) is the more profitable company, earning 22. 1% net margin versus -14. 8% for Orion Energy Systems, Inc. — meaning it keeps 22. 1% of every revenue dollar as bottom-line profit. Operating margin tells a similar story: MPWR leads at 26. 1% versus -13. 3% for OESX. At the gross margin level — before operating expenses — MPWR leads at 55. 2%, 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, Power Integrations, Inc.

(POWI) trades at 55. 5x forward P/E versus 73. 1x for Monolithic Power Systems, Inc. — 17. 6x 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), MPWR (0. 4% yield) pay a dividend. OESX, LEDS do not pay a meaningful dividend and should not be held primarily for income.

For long-horizon retirement investors, Orion Energy Systems, Inc.

(OESX) is the stronger choice — it scores higher on the combination of lower volatility, dividend reliability, and long-term compounding (low volatility (β 1. 10)). Monolithic Power Systems, Inc. (MPWR) 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 (OESX: -32. 5%, MPWR: +24. 9%), 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 (OESX (Industrials) and POWI (Technology) and MPWR (Technology) and LEDS (Technology)), which means they face different economic cycles, regulatory environments, and macro sensitivities — making direct comparison nuanced.

In terms of investment character: OESX is a small-cap quality compounder stock; POWI is a small-cap quality compounder stock; MPWR is a mid-cap high-growth stock; LEDS is a small-cap high-growth stock. POWI pays a dividend while OESX, MPWR, LEDS 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.