TOMZ vs HROW vs CECO vs PAHC

For growth investors, CECO Environmental Corp.

(CECO) is the stronger pick with 38. 8% revenue growth year-over-year, versus 5. 2% for TOMI Environmental Solutions, Inc. (TOMZ). Phibro Animal Health Corporation (PAHC) offers the better valuation at 36. 3x trailing P/E (14. 2x forward), making it the more compelling value choice. Analysts rate Harrow Health, Inc. (HROW) a "Buy" — based on 10 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, Phibro Animal Health Corporation (PAHC) is the cheapest at 36.

3x versus CECO Environmental Corp. at 59. 4x. On forward P/E, Phibro Animal Health Corporation is actually cheaper at 14. 2x. The PEG ratio (P/E divided by earnings growth rate) is the most growth-adjusted single valuation metric: CECO Environmental Corp. wins at 1. 14x versus Phibro Animal Health Corporation's 1. 90x — a reasonable growth-adjusted valuation.

Over the past 5 years, CECO Environmental Corp.

(CECO) delivered a total return of +1003%, compared to -77. 6% for TOMI Environmental Solutions, Inc. (TOMZ). Over 10 years, the gap is even starker: CECO returned +1282% versus TOMZ's -80. 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), TOMI Environmental Solutions, Inc.

(TOMZ) is the lower-risk stock at -0. 06β versus Harrow Health, Inc. 's 2. 13β — meaning HROW is approximately -3611% more volatile than TOMZ relative to the S&P 500. On balance sheet safety, CECO Environmental Corp. (CECO) carries a lower debt/equity ratio of 8% versus 5% for Harrow Health, Inc. — giving it more financial flexibility in a downturn.

By revenue growth (latest reported year), CECO Environmental Corp.

(CECO) is pulling ahead at 38. 8% versus 5. 2% for TOMI Environmental Solutions, Inc. (TOMZ). On earnings-per-share growth, the picture is similar: Phibro Animal Health Corporation grew EPS 1883% year-over-year, compared to -29. 4% for TOMI Environmental Solutions, Inc.. Over a 3-year CAGR, HROW leads at 45. 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.

CECO Environmental Corp.

(CECO) is the more profitable company, earning 6. 5% net margin versus -57. 8% for TOMI Environmental Solutions, Inc. — meaning it keeps 6. 5% of every revenue dollar as bottom-line profit. Operating margin tells a similar story: HROW leads at 11. 2% versus -53. 0% for TOMZ. At the gross margin level — before operating expenses — HROW leads at 75. 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, CECO Environmental Corp. (CECO) is the more undervalued stock at a PEG of 1. 14x versus Phibro Animal Health Corporation's 1. 90x. A PEG below 1. 5 suggests fair-to-attractive pricing relative to expected growth. On forward earnings alone, Phibro Animal Health Corporation (PAHC) trades at 14. 2x forward P/E versus 82. 9x for Harrow Health, Inc. — 68. 6x cheaper on a one-year earnings basis. Analyst consensus price targets imply the most upside for HROW: 93. 8% to $75. 67.

In this comparison, PAHC (1.

1% yield) pays a dividend. TOMZ, HROW, CECO do not pay a meaningful dividend and should not be held primarily for income.

For long-horizon retirement investors, TOMI Environmental Solutions, Inc.

(TOMZ) is the stronger choice — it scores higher on the combination of lower volatility, dividend reliability, and long-term compounding (low volatility (β -0. 06)). Harrow Health, Inc. (HROW) carries a higher beta of 2. 13 — meaning larger drawdowns in market downturns, which matters significantly when you cannot wait years for a recovery. Both have compounded well over 10 years (TOMZ: -80. 3%, HROW: +914. 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.

These companies operate in different sectors (TOMZ (Industrials) and HROW (Healthcare) and CECO (Industrials) and PAHC (Healthcare)), which means they face different economic cycles, regulatory environments, and macro sensitivities — making direct comparison nuanced.

In terms of investment character: TOMZ is a small-cap quality compounder stock; HROW is a small-cap high-growth stock; CECO is a small-cap high-growth stock; PAHC is a small-cap high-growth stock. PAHC pays a dividend while TOMZ, HROW, CECO 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.