KULR vs VICR vs AEHR vs MPWR vs ON

For growth investors, Monolithic Power Systems, Inc.

(MPWR) is the stronger pick with 26. 4% revenue growth year-over-year, versus -15. 3% for ON Semiconductor Corporation (ON). Vicor Corporation (VICR) offers the better valuation at 98. 3x trailing P/E (92. 5x forward), making it the more compelling value choice. Analysts rate KULR Technology Group, Inc. (KULR) a "Buy" — based on 2 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, Vicor Corporation (VICR) is the cheapest at 98.

3x versus ON Semiconductor Corporation at 355. 9x. On forward P/E, ON Semiconductor Corporation is actually cheaper at 33. 7x — notably different from the trailing picture, reflecting expected earnings growth. 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 Monolithic Power Systems, Inc. 's 2. 28x.

Over the past 5 years, Aehr Test Systems (AEHR) delivered a total return of +42.

2%, compared to -81. 9% for KULR Technology Group, Inc. (KULR). Over 10 years, the gap is even starker: AEHR returned +75. 0% versus KULR's -75. 9%. 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 Aehr Test Systems's 4. 86β — meaning AEHR is approximately 154% more volatile than ON relative to the S&P 500. On balance sheet safety, Monolithic Power Systems, Inc. (MPWR) carries a lower debt/equity ratio of 1% versus 45% for ON Semiconductor 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 -15. 3% for ON Semiconductor Corporation (ON). On earnings-per-share growth, the picture is similar: Vicor Corporation grew EPS 1764% year-over-year, compared to -92. 0% for ON Semiconductor Corporation. Over a 3-year CAGR, KULR leads at 64. 5% 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 -163. 2% for KULR Technology Group, Inc. — 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 -141. 9% for KULR. 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 Monolithic Power Systems, Inc. 's 2. 28x. Both stocks trade at elevated growth-adjusted valuations, so expected growth needs to materialise. On forward earnings alone, ON Semiconductor Corporation (ON) trades at 33. 7x forward P/E versus 92. 5x for Vicor Corporation — 58. 9x 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, MPWR (0.

4% yield) pays a dividend. KULR, VICR, AEHR, ON 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).

KULR Technology Group, Inc. (KULR) carries a higher beta of 3. 24 — 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%, KULR: -75. 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.

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: KULR is a small-cap quality compounder stock; VICR is a mid-cap quality compounder stock; AEHR is a small-cap quality compounder stock; MPWR is a mid-cap high-growth stock; ON is a mid-cap quality compounder stock. 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.