ZKIN vs LIN vs APD vs CODA

For growth investors, Coda Octopus Group, Inc.

(CODA) is the stronger pick with 30. 7% revenue growth year-over-year, versus -34. 2% for ZK International Group Co. , Ltd. (ZKIN). Coda Octopus Group, Inc. (CODA) offers the better valuation at 32. 2x trailing P/E (22. 5x forward), making it the more compelling value choice. Analysts rate Linde plc (LIN) a "Buy" — based on 28 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, Coda Octopus Group, Inc.

(CODA) is the cheapest at 32. 2x versus Linde plc at 33. 8x. On forward P/E, Coda Octopus Group, Inc. is actually cheaper at 22. 5x. The PEG ratio (P/E divided by earnings growth rate) is the most growth-adjusted single valuation metric: Linde plc wins at 1. 09x versus Coda Octopus Group, Inc. 's 5. 24x — a reasonable growth-adjusted valuation.

Over the past 5 years, Linde plc (LIN) delivered a total return of +73.

9%, compared to -96. 2% for ZK International Group Co. , Ltd. (ZKIN). Over 10 years, the gap is even starker: CODA returned +844. 4% versus ZKIN's -97. 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), ZK International Group Co.

, Ltd. (ZKIN) is the lower-risk stock at -0. 53β versus Coda Octopus Group, Inc. 's 1. 00β — meaning CODA is approximately -288% more volatile than ZKIN relative to the S&P 500. On balance sheet safety, Coda Octopus Group, Inc. (CODA) carries a lower debt/equity ratio of 1% versus 106% for Air Products and Chemicals, Inc. — giving it more financial flexibility in a downturn.

By revenue growth (latest reported year), Coda Octopus Group, Inc.

(CODA) is pulling ahead at 30. 7% versus -34. 2% for ZK International Group Co. , Ltd. (ZKIN). On earnings-per-share growth, the picture is similar: Coda Octopus Group, Inc. grew EPS 15. 6% year-over-year, compared to -110. 3% for Air Products and Chemicals, Inc.. Over a 3-year CAGR, CODA leads at 6. 1% 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.

Linde plc (LIN) is the more profitable company, earning 20.

3% net margin versus -5. 6% for ZK International Group Co. , Ltd. — meaning it keeps 20. 3% of every revenue dollar as bottom-line profit. Operating margin tells a similar story: LIN leads at 26. 3% versus -7. 3% for APD. At the gross margin level — before operating expenses — CODA leads at 66. 5%, 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, Linde plc (LIN) is the more undervalued stock at a PEG of 1. 09x versus Coda Octopus Group, Inc. 's 5. 24x. A PEG below 1. 5 suggests fair-to-attractive pricing relative to expected growth. On forward earnings alone, Coda Octopus Group, Inc. (CODA) trades at 22. 5x forward P/E versus 27. 7x for Linde plc — 5. 2x cheaper on a one-year earnings basis. Analyst consensus price targets imply the most upside for CODA: 17. 6% to $14. 00.

In this comparison, APD (2.

4% yield), LIN (1. 2% yield) pay a dividend. ZKIN, CODA do not pay a meaningful dividend and should not be held primarily for income.

For long-horizon retirement investors, Linde plc (LIN) is the stronger choice — it scores higher on the combination of lower volatility, dividend reliability, and long-term compounding (low volatility (β 0.

24), 1. 2% yield, +375. 2% 10Y return). Both have compounded well over 10 years (LIN: +375. 2%, CODA: +844. 4%), 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 (ZKIN (Basic Materials) and LIN (Basic Materials) and APD (Basic Materials) and CODA (Industrials)), which means they face different economic cycles, regulatory environments, and macro sensitivities — making direct comparison nuanced.

In terms of investment character: ZKIN is a small-cap quality compounder stock; LIN is a large-cap quality compounder stock; APD is a mid-cap quality compounder stock; CODA is a small-cap high-growth stock. LIN, APD pay a dividend while ZKIN, CODA 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.