CLS vs PLXS vs JBL vs FLEX

For growth investors, Celestica Inc.

(CLS) is the stronger pick with 30. 7% revenue growth year-over-year, versus -2. 3% for Flex Ltd. (FLEX). Plexus Corp. (PLXS) offers the better valuation at 41. 6x trailing P/E (33. 8x forward), making it the more compelling value choice. Analysts rate Celestica Inc. (CLS) a "Buy" — based on 27 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 41. 6x versus Flex Ltd. at 63. 1x. On forward P/E, Jabil Inc. is actually cheaper at 28. 4x — 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: Jabil Inc. wins at 0. 37x versus Plexus Corp. 's 3. 47x — a PEG below 1. 0 traditionally signals the market is underpricing earnings growth.

Over the past 5 years, Celestica Inc.

(CLS) delivered a total return of +45. 4%, compared to +174. 0% for Plexus Corp. (PLXS). Over 10 years, the gap is even starker: CLS returned +37. 0% versus PLXS's +515. 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), Plexus Corp.

(PLXS) is the lower-risk stock at 1. 65β versus Celestica Inc. 's 2. 75β — meaning CLS is approximately 66% more volatile than PLXS relative to the S&P 500. On balance sheet safety, Plexus Corp. (PLXS) carries a lower debt/equity ratio of 12% versus 2% for Jabil Inc. — giving it more financial flexibility in a downturn.

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

(CLS) is pulling ahead at 30. 7% versus -2. 3% for Flex Ltd. (FLEX). On earnings-per-share growth, the picture is similar: Celestica Inc. grew EPS 101. 9% year-over-year, compared to -47. 0% for Jabil Inc.. Over a 3-year CAGR, CLS leads at 20. 3% 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.

Celestica Inc.

(CLS) is the more profitable company, earning 6. 7% net margin versus 2. 2% for Jabil Inc. — meaning it keeps 6. 7% of every revenue dollar as bottom-line profit. Operating margin tells a similar story: CLS leads at 8. 6% versus 4. 0% for JBL. At the gross margin level — before operating expenses — CLS leads at 11. 7%, 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, Jabil Inc. (JBL) is the more undervalued stock at a PEG of 0. 37x versus Plexus Corp. 's 3. 47x. A PEG below 1. 0 is traditionally considered the threshold for growth-adjusted undervaluation. On forward earnings alone, Jabil Inc. (JBL) trades at 28. 4x forward P/E versus 41. 0x for Flex Ltd. — 12. 6x cheaper on a one-year earnings basis. Analyst consensus price targets imply the most upside for CLS: 19. 2% to $459. 00.

None of the stocks in this comparison currently pay a material dividend.

All are effectively zero-yield and should be held for capital appreciation rather than income.

For long-horizon retirement investors, Jabil Inc.

(JBL) is the stronger choice — it scores higher on the combination of lower volatility, dividend reliability, and long-term compounding (+1957% 10Y return). Celestica Inc. (CLS) carries a higher beta of 2. 75 — meaning larger drawdowns in market downturns, which matters significantly when you cannot wait years for a recovery. Both have compounded well over 10 years (JBL: +1957%, CLS: +37. 0%), 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: CLS is a mid-cap high-growth stock; PLXS is a small-cap quality compounder stock; JBL is a mid-cap quality compounder stock; FLEX 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.