CTSO vs ATRC

For growth investors, AtriCure, Inc.

(ATRC) is the stronger pick with 14. 9% revenue growth year-over-year, versus 14. 5% for Cytosorbents Corporation (CTSO). Analysts rate AtriCure, Inc. (ATRC) a "Buy" — based on 19 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.

Over the past 5 years, AtriCure, Inc.

(ATRC) delivered a total return of -64. 2%, compared to -92. 8% for Cytosorbents Corporation (CTSO). Over 10 years, the gap is even starker: ATRC returned +95. 1% versus CTSO's -86. 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), Cytosorbents Corporation (CTSO) is the lower-risk stock at 0.

92β versus AtriCure, Inc. 's 1. 03β — meaning ATRC is approximately 11% more volatile than CTSO relative to the S&P 500. On balance sheet safety, AtriCure, Inc. (ATRC) carries a lower debt/equity ratio of 18% versus 2% for Cytosorbents Corporation — giving it more financial flexibility in a downturn.

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

(ATRC) is pulling ahead at 14. 9% versus 14. 5% for Cytosorbents Corporation (CTSO). On earnings-per-share growth, the picture is similar: AtriCure, Inc. grew EPS 74. 7% year-over-year, compared to 41. 5% for Cytosorbents Corporation. Over a 3-year CAGR, ATRC leads at 17. 4% 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.

AtriCure, Inc.

(ATRC) is the more profitable company, earning -2. 1% net margin versus -58. 2% for Cytosorbents Corporation — meaning it keeps -2. 1% of every revenue dollar as bottom-line profit. Operating margin tells a similar story: ATRC leads at -0. 6% versus -47. 2% for CTSO. At the gross margin level — before operating expenses — ATRC leads at 74. 4%, 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.

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, AtriCure, Inc.

(ATRC) is the stronger choice — it scores higher on the combination of lower volatility, dividend reliability, and long-term compounding (low volatility (β 1. 03)). Both have compounded well over 10 years (ATRC: +95. 1%, CTSO: -86. 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.

Both stocks operate in the Healthcare sector, making this a peer-level intra-sector comparison — the same macro tailwinds and headwinds will affect both.

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.