SNT vs ALRM vs DGLY vs OSIS vs SSTI

For growth investors, OSI Systems, Inc.

(OSIS) is the stronger pick with 11. 3% revenue growth year-over-year, versus -30. 4% for Digital Ally, Inc. (DGLY). Alarm. com Holdings, Inc. (ALRM) offers the better valuation at 19. 1x trailing P/E (16. 9x forward), making it the more compelling value choice. Analysts rate Alarm. com Holdings, Inc. (ALRM) 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.

On trailing P/E, Alarm.

com Holdings, Inc. (ALRM) is the cheapest at 19. 1x versus OSI Systems, Inc. at 27. 7x. On forward P/E, Alarm. com Holdings, Inc. is actually cheaper at 16. 9x. The PEG ratio (P/E divided by earnings growth rate) is the most growth-adjusted single valuation metric: OSI Systems, Inc. wins at 1. 39x versus Alarm. com Holdings, Inc. 's 1. 69x — a reasonable growth-adjusted valuation.

Over the past 5 years, OSI Systems, Inc.

(OSIS) delivered a total return of +149. 9%, compared to -100. 0% for Digital Ally, Inc. (DGLY). Over 10 years, the gap is even starker: OSIS returned +372. 9% versus DGLY's -100. 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), Senstar Technologies Ltd.

(SNT) is the lower-risk stock at 0. 52β versus Digital Ally, Inc. 's 3. 58β — meaning DGLY is approximately 590% more volatile than SNT relative to the S&P 500. On balance sheet safety, Senstar Technologies Ltd. (SNT) carries a lower debt/equity ratio of 1% versus 127% for Alarm. com Holdings, Inc. — giving it more financial flexibility in a downturn.

By revenue growth (latest reported year), OSI Systems, Inc.

(OSIS) is pulling ahead at 11. 3% versus -30. 4% for Digital Ally, Inc. (DGLY). On earnings-per-share growth, the picture is similar: Senstar Technologies Ltd. grew EPS 298. 9% year-over-year, compared to -227. 3% for SoundThinking, Inc.. Over a 3-year CAGR, SSTI leads at 20. 6% 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.

Alarm.

com Holdings, Inc. (ALRM) is the more profitable company, earning 13. 1% net margin versus -101. 0% for Digital Ally, Inc. — meaning it keeps 13. 1% of every revenue dollar as bottom-line profit. Operating margin tells a similar story: ALRM leads at 13. 4% versus -77. 4% for DGLY. At the gross margin level — before operating expenses — SNT leads at 64. 1%, 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, OSI Systems, Inc. (OSIS) is the more undervalued stock at a PEG of 1. 39x versus Alarm. com Holdings, Inc. 's 1. 69x. A PEG below 1. 5 suggests fair-to-attractive pricing relative to expected growth. On forward earnings alone, Alarm. com Holdings, Inc. (ALRM) trades at 16. 9x forward P/E versus 23. 0x for OSI Systems, Inc. — 6. 2x cheaper on a one-year earnings basis. Analyst consensus price targets imply the most upside for OSIS: 21. 7% to $293. 50.

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, Senstar Technologies Ltd.

(SNT) is the stronger choice — it scores higher on the combination of lower volatility, dividend reliability, and long-term compounding (low volatility (β 0. 52)). Digital Ally, Inc. (DGLY) carries a higher beta of 3. 58 — meaning larger drawdowns in market downturns, which matters significantly when you cannot wait years for a recovery. Both have compounded well over 10 years (SNT: +39. 8%, DGLY: -100. 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.

These companies operate in different sectors (SNT (Industrials) and ALRM (Technology) and DGLY (Industrials) and OSIS (Technology) and SSTI (Technology)), which means they face different economic cycles, regulatory environments, and macro sensitivities — making direct comparison nuanced.

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.