PRO vs APPF vs PCTY vs SPSC vs QLYS

For growth investors, AppFolio, Inc.

(APPF) is the stronger pick with 19. 7% revenue growth year-over-year, versus 8. 8% for PROS Holdings, Inc. (PRO). Qualys, Inc. (QLYS) offers the better valuation at 17. 5x trailing P/E (12. 9x forward), making it the more compelling value choice. Analysts rate PROS Holdings, Inc. (PRO) a "Buy" — based on 20 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, Qualys, Inc.

(QLYS) is the cheapest at 17. 5x versus AppFolio, Inc. at 43. 8x. On forward P/E, SPS Commerce, Inc. is actually cheaper at 12. 7x — notably different from the trailing picture, reflecting expected earnings growth. The PEG ratio (P/E divided by earnings growth rate) is the most growth-adjusted single valuation metric: Paylocity Holding Corporation wins at 0. 50x versus SPS Commerce, Inc. 's 0. 89x — a PEG below 1. 0 traditionally signals the market is underpricing earnings growth.

Over the past 5 years, AppFolio, Inc.

(APPF) delivered a total return of +30. 6%, compared to -41. 9% for SPS Commerce, Inc. (SPSC). Over 10 years, the gap is even starker: APPF returned +1277% versus PRO's +98. 0%. 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), Paylocity Holding Corporation (PCTY) is the lower-risk stock at 0.

43β versus PROS Holdings, Inc. 's 1. 47β — meaning PRO is approximately 243% more volatile than PCTY relative to the S&P 500. On balance sheet safety, SPS Commerce, Inc. (SPSC) carries a lower debt/equity ratio of 1% versus 18% for Paylocity Holding Corporation — giving it more financial flexibility in a downturn.

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

(APPF) is pulling ahead at 19. 7% versus 8. 8% for PROS Holdings, Inc. (PRO). On earnings-per-share growth, the picture is similar: PROS Holdings, Inc. grew EPS 64. 8% year-over-year, compared to -30. 1% for AppFolio, Inc.. Over a 3-year CAGR, APPF leads at 26. 3% 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.

Qualys, Inc.

(QLYS) is the more profitable company, earning 29. 6% net margin versus -6. 2% for PROS Holdings, Inc. — meaning it keeps 29. 6% of every revenue dollar as bottom-line profit. Operating margin tells a similar story: QLYS leads at 33. 2% versus -5. 8% for PRO. At the gross margin level — before operating expenses — QLYS leads at 82. 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.

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, Paylocity Holding Corporation (PCTY) is the more undervalued stock at a PEG of 0. 50x versus SPS Commerce, Inc. 's 0. 89x. A PEG below 1. 0 is traditionally considered the threshold for growth-adjusted undervaluation. On forward earnings alone, SPS Commerce, Inc. (SPSC) trades at 12. 7x forward P/E versus 27. 6x for PROS Holdings, Inc. — 14. 8x cheaper on a one-year earnings basis. Analyst consensus price targets imply the most upside for PCTY: 54. 0% to $168. 08.

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, AppFolio, Inc.

(APPF) is the stronger choice — it scores higher on the combination of lower volatility, dividend reliability, and long-term compounding (low volatility (β 0. 71), +1277% 10Y return). Both have compounded well over 10 years (APPF: +1277%, PRO: +98. 0%), 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 Technology sector, making this a peer-level intra-sector comparison — the same macro tailwinds and headwinds will affect both.

In terms of investment character: PRO is a small-cap quality compounder stock; APPF is a small-cap high-growth stock; PCTY is a small-cap quality compounder stock; SPSC is a small-cap high-growth stock; QLYS is a small-cap deep-value 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.