RMD vs TNDM vs DXCM vs NVCR

For growth investors, DexCom, Inc.

(DXCM) is the stronger pick with 15. 6% revenue growth year-over-year, versus 7. 9% for Tandem Diabetes Care, Inc. (TNDM). ResMed Inc. (RMD) offers the better valuation at 21. 8x trailing P/E (18. 8x forward), making it the more compelling value choice. Analysts rate ResMed Inc. (RMD) a "Buy" — based on 35 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, ResMed Inc.

(RMD) is the cheapest at 21. 8x versus DexCom, Inc. at 29. 1x. On forward P/E, ResMed Inc. is actually cheaper at 18. 8x. The PEG ratio (P/E divided by earnings growth rate) is the most growth-adjusted single valuation metric: ResMed Inc. wins at 1. 08x versus DexCom, Inc. 's 2. 34x — a reasonable growth-adjusted valuation.

Over the past 5 years, ResMed Inc.

(RMD) delivered a total return of +11. 0%, compared to -91. 3% for NovoCure Limited (NVCR). Over 10 years, the gap is even starker: RMD returned +293. 8% versus TNDM's -75. 4%. 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), ResMed Inc.

(RMD) is the lower-risk stock at 0. 66β versus NovoCure Limited's 2. 20β — meaning NVCR is approximately 236% more volatile than RMD relative to the S&P 500. On balance sheet safety, ResMed Inc. (RMD) carries a lower debt/equity ratio of 14% versus 3% for Tandem Diabetes Care, Inc. — giving it more financial flexibility in a downturn.

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

(DXCM) is pulling ahead at 15. 6% versus 7. 9% for Tandem Diabetes Care, Inc. (TNDM). On earnings-per-share growth, the picture is similar: DexCom, Inc. grew EPS 47. 2% year-over-year, compared to -106. 8% for Tandem Diabetes Care, Inc.. Over a 3-year CAGR, DXCM leads at 17. 0% 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.

ResMed Inc.

(RMD) is the more profitable company, earning 27. 2% net margin versus -20. 8% for NovoCure Limited — meaning it keeps 27. 2% of every revenue dollar as bottom-line profit. Operating margin tells a similar story: RMD leads at 32. 7% versus -23. 5% for NVCR. At the gross margin level — before operating expenses — NVCR leads at 74. 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, ResMed Inc. (RMD) is the more undervalued stock at a PEG of 1. 08x versus DexCom, Inc. 's 2. 34x. A PEG below 1. 5 suggests fair-to-attractive pricing relative to expected growth. On forward earnings alone, ResMed Inc. (RMD) trades at 18. 8x forward P/E versus 24. 5x for DexCom, Inc. — 5. 7x cheaper on a one-year earnings basis. Analyst consensus price targets imply the most upside for NVCR: 99. 0% to $33. 50.

In this comparison, RMD (1.

0% yield) pays a dividend. TNDM, DXCM, NVCR do not pay a meaningful dividend and should not be held primarily for income.

For long-horizon retirement investors, ResMed Inc.

(RMD) is the stronger choice — it scores higher on the combination of lower volatility, dividend reliability, and long-term compounding (low volatility (β 0. 66), 1. 0% yield, +293. 8% 10Y return). NovoCure Limited (NVCR) carries a higher beta of 2. 20 — meaning larger drawdowns in market downturns, which matters significantly when you cannot wait years for a recovery. Both have compounded well over 10 years (RMD: +293. 8%, NVCR: +30. 3%), 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 Healthcare sector, making this a peer-level intra-sector comparison — the same macro tailwinds and headwinds will affect both.

In terms of investment character: RMD is a mid-cap quality compounder stock; TNDM is a small-cap quality compounder stock; DXCM is a mid-cap high-growth stock; NVCR is a small-cap quality compounder stock. RMD pays a dividend while TNDM, DXCM, NVCR 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.