AptarGroup, Inc vs ADVANCED DRAINAGE SYSTEMS, INC., two Plastics stocks. A side-by-side on valuation, growth, margins, returns, and what each price is betting.
AptarGroup makes dispensing systems and packaging for beauty and pharma; Advanced Drainage makes plastic stormwater pipe, two very different plastics businesses. Advanced Drainage earns the higher return, 22.66% on equity against Aptar's 14.6%, and the fatter margin, 13.98% against 9.98%, on its infrastructure-driven demand. Aptar trades cheaper, 21.57 times earnings against 28.43, and carries almost no debt against Advanced Drainage's 0.87 turns. Both convert solid free cash near 4% to 4.7%. The pair sets a specialty-packaging maker against a plastic-pipe maker: Advanced Drainage earns more on stormwater and infrastructure spend, Aptar offers steadier beauty-and-pharma dispensing demand at a lower multiple.
Comparison updated 2026-07-11.
| Metric | ATR | WMS |
|---|---|---|
| Price | $125.55 | $150.90 |
| Market cap | $8.1B | $11.8B |
| Sector | Plastics | Plastics |
| Stage | Mature | Mature |
| Implied growth (priced in) | +6.3% | — |
| P/E | 21.5 | 27.7 |
| P/B | 3.07 | 6.29 |
| P/S | 2.10 | 3.88 |
| EV/EBITDA | 14.2 | 15.9 |
| Revenue growth | +9.0% | +5.2% |
| Gross margin | — | 35.1% |
| Operating margin | 10.9% | 7.9% |
| Net margin | 10.0% | 14.0% |
| Return on equity | 14.6% | 22.7% |
| Return on assets | 7.6% | 9.5% |
| Return on invested capital | 13.5% | 13.9% |
| FCF yield | 4.0% | 4.8% |
| Dividend yield | 1.5% | 0.5% |
| Debt / equity | 0.07 | 0.87 |
| Current ratio | 1.66 | 2.42 |
| Altman Z (solvency) | 7.73 | 4.27 |
| Piotroski F (quality) | 8 / 9 | 5 / 9 |
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The stronger value is highlighted per metric where one is strictly better on that single number; it is not an overall verdict on either company. For informational and research purposes only. Not investment advice. Not a recommendation to buy, sell, or hold any security. boothcheck is not a registered investment adviser. Past performance does not guarantee future results.