RSSS vs CODA vs INFU vs SPOK vs NRDY

For growth investors, Coda Octopus Group, Inc.

(CODA) is the stronger pick with 30. 7% revenue growth year-over-year, versus -5. 9% for Nerdy, Inc. (NRDY). Spok Holdings, Inc. (SPOK) offers the better valuation at 14. 4x trailing P/E (16. 4x forward), making it the more compelling value choice. Analysts rate Coda Octopus Group, Inc. (CODA) a "Buy" — based on 1 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, Spok Holdings, Inc.

(SPOK) is the cheapest at 14. 4x versus Research Solutions, Inc. at 64. 5x. On forward P/E, Spok Holdings, Inc. is actually cheaper at 16. 4x.

Over the past 5 years, Spok Holdings, Inc.

(SPOK) delivered a total return of +61. 9%, compared to -91. 4% for Nerdy, Inc. (NRDY). Over 10 years, the gap is even starker: CODA returned +844. 4% versus NRDY's -90. 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), Spok Holdings, Inc.

(SPOK) is the lower-risk stock at 0. 42β versus Nerdy, Inc. 's 1. 76β — meaning NRDY is approximately 319% more volatile than SPOK relative to the S&P 500. On balance sheet safety, Coda Octopus Group, Inc. (CODA) carries a lower debt/equity ratio of 1% versus 67% for Nerdy, 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 -5. 9% for Nerdy, Inc. (NRDY). On earnings-per-share growth, the picture is similar: InfuSystem Holdings, Inc. grew EPS 181. 8% year-over-year, compared to 2. 7% for Spok Holdings, Inc.. Over a 3-year CAGR, RSSS leads at 14. 2% 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.

Coda Octopus Group, Inc.

(CODA) is the more profitable company, earning 15. 5% net margin versus -22. 3% for Nerdy, Inc. — meaning it keeps 15. 5% of every revenue dollar as bottom-line profit. Operating margin tells a similar story: CODA leads at 17. 1% versus -19. 3% for NRDY. At the gross margin level — before operating expenses — SPOK leads at 78. 8%, 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, Spok Holdings, Inc.

(SPOK) trades at 16. 4x forward P/E versus 22. 5x for Coda Octopus Group, Inc. — 6. 0x cheaper on a one-year earnings basis. Analyst consensus price targets imply the most upside for INFU: 67. 4% to $15. 00.

In this comparison, SPOK (11.

9% yield) pays a dividend. RSSS, CODA, INFU, NRDY do not pay a meaningful dividend and should not be held primarily for income.

For long-horizon retirement investors, Spok Holdings, Inc.

(SPOK) is the stronger choice — it scores higher on the combination of lower volatility, dividend reliability, and long-term compounding (low volatility (β 0. 42), 11. 9% yield). Nerdy, Inc. (NRDY) carries a higher beta of 1. 76 — meaning larger drawdowns in market downturns, which matters significantly when you cannot wait years for a recovery. Both have compounded well over 10 years (SPOK: +13. 3%, NRDY: -90. 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.

These companies operate in different sectors (RSSS (Technology) and CODA (Industrials) and INFU (Healthcare) and SPOK (Healthcare) and NRDY (Technology)), which means they face different economic cycles, regulatory environments, and macro sensitivities — making direct comparison nuanced.

In terms of investment character: RSSS is a small-cap quality compounder stock; CODA is a small-cap high-growth stock; INFU is a small-cap quality compounder stock; SPOK is a small-cap deep-value stock; NRDY is a small-cap quality compounder stock. SPOK pays a dividend while RSSS, CODA, INFU, NRDY 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.