MRX vs VIRT vs MKTX

For growth investors, Virtu Financial, Inc.

(VIRT) is the stronger pick with 26. 2% revenue growth year-over-year, versus 3. 8% for MarketAxess Holdings Inc. (MKTX). Virtu Financial, Inc. (VIRT) offers the better valuation at 9. 7x trailing P/E (8. 3x forward), making it the more compelling value choice. Analysts rate Marex Group plc Ordinary Shares (MRX) a "Buy" — based on 6 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, Virtu Financial, Inc.

(VIRT) is the cheapest at 9. 7x versus MarketAxess Holdings Inc. at 22. 9x. On forward P/E, Virtu Financial, Inc. is actually cheaper at 8. 3x. The PEG ratio (P/E divided by earnings growth rate) is the most growth-adjusted single valuation metric: Marex Group plc Ordinary Shares wins at 0. 27x versus MarketAxess Holdings Inc. 's 3. 03x — a PEG below 1. 0 traditionally signals the market is underpricing earnings growth.

Over the past 5 years, Marex Group plc Ordinary Shares (MRX) delivered a total return of +178.

6%, compared to -61. 8% for MarketAxess Holdings Inc. (MKTX). Over 10 years, the gap is even starker: VIRT returned +212. 0% versus MKTX's +38. 3%. 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), MarketAxess Holdings Inc.

(MKTX) is the lower-risk stock at -0. 28β versus Marex Group plc Ordinary Shares's 0. 74β — meaning MRX is approximately -363% more volatile than MKTX relative to the S&P 500. On balance sheet safety, MarketAxess Holdings Inc. (MKTX) carries a lower debt/equity ratio of 25% versus 8% for Marex Group plc Ordinary Shares — giving it more financial flexibility in a downturn.

By revenue growth (latest reported year), Virtu Financial, Inc.

(VIRT) is pulling ahead at 26. 2% versus 3. 8% for MarketAxess Holdings Inc. (MKTX). On earnings-per-share growth, the picture is similar: Virtu Financial, Inc. grew EPS 72. 7% year-over-year, compared to -8. 5% for MarketAxess Holdings Inc.. 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.

MarketAxess Holdings Inc.

(MKTX) is the more profitable company, earning 29. 0% net margin versus 8. 5% for Marex Group plc Ordinary Shares — meaning it keeps 29. 0% of every revenue dollar as bottom-line profit. Operating margin tells a similar story: MKTX leads at 41. 2% versus 32. 0% for MRX. At the gross margin level — before operating expenses — MRX leads at 74. 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, Marex Group plc Ordinary Shares (MRX) is the more undervalued stock at a PEG of 0. 27x versus MarketAxess Holdings Inc. 's 3. 03x. A PEG below 1. 0 is traditionally considered the threshold for growth-adjusted undervaluation. On forward earnings alone, Virtu Financial, Inc. (VIRT) trades at 8. 3x forward P/E versus 18. 6x for MarketAxess Holdings Inc. — 10. 4x cheaper on a one-year earnings basis. Analyst consensus price targets imply the most upside for MKTX: 28. 1% to $195. 60.

All stocks in this comparison pay dividends.

Virtu Financial, Inc. (VIRT) offers the highest yield at 2. 1%, versus 1. 4% for Marex Group plc Ordinary Shares (MRX).

For long-horizon retirement investors, MarketAxess Holdings Inc.

(MKTX) is the stronger choice — it scores higher on the combination of lower volatility, dividend reliability, and long-term compounding (low volatility (β -0. 28), 2. 0% yield). Both have compounded well over 10 years (MKTX: +38. 3%, MRX: +178. 6%), 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 Financial Services sector, making this a peer-level intra-sector comparison — the same macro tailwinds and headwinds will affect both.

In terms of investment character: MRX is a small-cap high-growth stock; VIRT is a small-cap high-growth stock; MKTX is a small-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.