MEI vs PLXS vs VICR vs SMTC vs MPWR

For growth investors, Monolithic Power Systems, Inc.

(MPWR) is the stronger pick with 26. 4% revenue growth year-over-year, versus -6. 0% for Methode Electronics, Inc. (MEI). Plexus Corp. (PLXS) offers the better valuation at 42. 6x trailing P/E (32. 6x forward), making it the more compelling value choice. Analysts rate Plexus Corp. (PLXS) a "Buy" — based on 18 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, Plexus Corp.

(PLXS) is the cheapest at 42. 6x versus Monolithic Power Systems, Inc. at 125. 6x. On forward P/E, Plexus Corp. is actually cheaper at 32. 6x. The PEG ratio (P/E divided by earnings growth rate) is the most growth-adjusted single valuation metric: Vicor Corporation wins at 2. 07x versus Plexus Corp. 's 3. 34x.

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

(MPWR) delivered a total return of +404. 2%, compared to -73. 7% for Methode Electronics, Inc. (MEI). Over 10 years, the gap is even starker: VICR returned +26. 5% versus MEI's -51. 6%. 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), Plexus Corp.

(PLXS) is the lower-risk stock at 1. 64β versus Vicor Corporation's 2. 87β — meaning VICR is approximately 75% more volatile than PLXS relative to the S&P 500. On balance sheet safety, Monolithic Power Systems, Inc. (MPWR) carries a lower debt/equity ratio of 1% versus 102% for Semtech Corporation — giving it more financial flexibility in a downturn.

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

(MPWR) is pulling ahead at 26. 4% versus -6. 0% for Methode Electronics, Inc. (MEI). On earnings-per-share growth, the picture is similar: Vicor Corporation grew EPS 1764% year-over-year, compared to -65. 2% for Monolithic Power Systems, Inc.. Over a 3-year CAGR, MPWR leads at 15. 9% 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.

Vicor Corporation (VICR) is the more profitable company, earning 29.

1% net margin versus -17. 8% for Semtech Corporation — meaning it keeps 29. 1% of every revenue dollar as bottom-line profit. Operating margin tells a similar story: MPWR leads at 26. 1% versus -2. 3% for MEI. 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.

The PEG ratio (forward P/E divided by expected earnings growth rate) is the most precise measure of undervaluation relative to growth potential.

By this metric, Vicor Corporation (VICR) is the more undervalued stock at a PEG of 2. 07x versus Plexus Corp. 's 3. 34x. Both stocks trade at elevated growth-adjusted valuations, so expected growth needs to materialise. On forward earnings alone, Plexus Corp. (PLXS) trades at 32. 6x forward P/E versus 92. 5x for Vicor Corporation — 60. 0x cheaper on a one-year earnings basis. Analyst consensus price targets imply the most upside for MPWR: 0. 9% to $1615. 00.

In this comparison, MEI (6.

0% yield), MPWR (0. 4% yield) pay a dividend. PLXS, VICR, SMTC do not pay a meaningful dividend and should not be held primarily for income.

For long-horizon retirement investors, Plexus Corp.

(PLXS) is the stronger choice — it scores higher on the combination of lower volatility, dividend reliability, and long-term compounding (+529. 5% 10Y return). Monolithic Power Systems, Inc. (MPWR) carries a higher beta of 2. 27 — meaning larger drawdowns in market downturns, which matters significantly when you cannot wait years for a recovery. Both have compounded well over 10 years (PLXS: +529. 5%, MPWR: +25. 3%), 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.

Both stocks operate in the Technology sector, making this a peer-level intra-sector comparison — the same macro tailwinds and headwinds will affect both.

In terms of investment character: MEI is a small-cap income-oriented stock; PLXS is a small-cap quality compounder stock; VICR is a mid-cap quality compounder stock; SMTC is a mid-cap quality compounder stock; MPWR is a mid-cap high-growth stock. MEI pays a dividend while PLXS, VICR, SMTC, MPWR 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.