WOLF vs STM vs ON vs AEHR

For growth investors, Wolfspeed, Inc.

(WOLF) is the stronger pick with -6. 1% revenue growth year-over-year, versus -15. 3% for ON Semiconductor Corporation (ON). STMicroelectronics N. V. (STM) offers the better valuation at 321. 9x trailing P/E (48. 9x forward), making it the more compelling value choice. Analysts rate STMicroelectronics N. V. (STM) a "Buy" — based on 29 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, STMicroelectronics N.

V. (STM) is the cheapest at 321. 9x versus ON Semiconductor Corporation at 364. 7x. On forward P/E, ON Semiconductor Corporation is actually cheaper at 36. 1x — notably different from the trailing picture, reflecting expected earnings growth.

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

0%, compared to -54. 4% for Wolfspeed, Inc. (WOLF). Over 10 years, the gap is even starker: AEHR returned +69. 6% versus WOLF's +84. 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.

95β versus Aehr Test Systems's 4. 77β — meaning AEHR is approximately 145% more volatile than ON relative to the S&P 500. On balance sheet safety, Aehr Test Systems (AEHR) carries a lower debt/equity ratio of 9% versus 45% for ON Semiconductor Corporation — giving it more financial flexibility in a downturn.

By revenue growth (latest reported year), Wolfspeed, Inc.

(WOLF) is pulling ahead at -6. 1% versus -15. 3% for ON Semiconductor Corporation (ON). On earnings-per-share growth, the picture is similar: Aehr Test Systems grew EPS 0. 0% 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.

ON Semiconductor Corporation (ON) is the more profitable company, earning 2.

0% net margin versus -212. 4% for Wolfspeed, Inc. — meaning it keeps 2. 0% of every revenue dollar as bottom-line profit. Operating margin tells a similar story: ON leads at 12. 5% versus -175. 4% for WOLF. At the gross margin level — before operating expenses — AEHR leads at 40. 6%, 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 36.

1x forward P/E versus 48. 9x for STMicroelectronics N. V. — 12. 7x cheaper on a one-year earnings basis. Analyst consensus price targets imply the most upside for STM: -0. 8% to $57. 50.

In this comparison, STM (0.

6% yield) pays a dividend. WOLF, ON, AEHR do not pay a meaningful dividend and should not be held primarily for income.

For long-horizon retirement investors, STMicroelectronics N.

V. (STM) is the stronger choice — it scores higher on the combination of lower volatility, dividend reliability, and long-term compounding (0. 6% yield, +993. 5% 10Y return). Aehr Test Systems (AEHR) carries a higher beta of 4. 77 — meaning larger drawdowns in market downturns, which matters significantly when you cannot wait years for a recovery. Both have compounded well over 10 years (STM: +993. 5%, AEHR: +69. 6%), 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 null sector, making this a peer-level intra-sector comparison — the same macro tailwinds and headwinds will affect both.

STM pays a dividend while WOLF, ON, AEHR 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.