AOS vs ZWS
AOS: Leading North American manufacturer of residential and commercial water heaters, boilers, and water treatment products serving replacement and new construction markets. ZWS: A leading provider of specification-driven water management and filtration solutions for institutional and commercial infrastructure.
Side-by-side fundamentals
| Metric | AOS | ZWS | Edge |
|---|---|---|---|
| Price as of 2026-07-22 close | $59.35 | $47.48 | |
| Market cap as of 2026-07-23 | $8.2B | $7.9B | |
| P/E as of 2026-07-23 | 15.51 | 36.93 | AOS lower |
| PEG as of 2026-07-23 | 3.23 | 2.70 | ZWS lower |
| Net margin as of 2026-07-23 | +13.8% | +12.3% | AOS higher |
| Gross margin as of 2026-07-23 | +38.8% | +45.4% | ZWS higher |
| Operating margin as of 2026-07-23 | +18.1% | +17.7% | AOS higher |
| ROE as of 2026-07-23 | +28.4% | +13.4% | AOS higher |
| ROA as of 2026-07-23 | +16.0% | +8.0% | AOS higher |
| Debt / equity as of 2026-07-23 | 0.33 | 0.31 | ZWS lower |
| Revenue growth (YoY) as of 2026-07-23 | +0.2% | +10.0% | ZWS higher |
| Revenue CAGR (3y) SEC XBRL | +0.7% | +9.8% | ZWS higher |
| Dividend yield as of 2026-07-23 | +2.5% | +0.9% | AOS higher |
| Dividend streak (yrs) SEC XBRL | 5 | 4 | AOS higher |
| Beta as of 2026-07-23 | 1.16 | 1.09 | |
| 1-year return as of 2026-07-22 close | -14.9% | +29.1% | ZWS higher |
Fundamentals: Finnhub, as of 2026-07-23. Filings: SEC EDGAR. Prices are delayed daily-close data.
Last updated 2026-07-22.
Informational only — NOT financial advice. All figures are delayed daily-close data from SEC EDGAR & Finnhub, shown with their as-of date; "Edge" cells are a pure numeric comparison, not a recommendation.