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Mueller Industries vs Kaiser Aluminum: MLI and KALU compared
Mueller Industries is the larger company: $1.4B of revenue in its latest quarter (Q3 2026) against $1.2B for Kaiser Aluminum (Q3 2026). Kaiser Aluminum is growing faster (+44% against +32% a year earlier). Mueller Industries is more profitable, with an operating margin of 19.8% against 4.5%.
Where the money goes: MLI and KALU
Mueller Industries (MLI) · Q3 2026
Mueller Industries, Q3 2026: revenue $1.4B (+32% year over year), operating margin 19.8%, net earnings $221M, operating cash flow $337M. The chart follows the revenue to costs, profit and cash.
Kaiser Aluminum (KALU) · Q3 2026
Kaiser Aluminum, Q3 2026: revenue $1.2B (+44% year over year), operating margin 4.5%, net earnings $31.0M, operating cash flow $101M. The chart follows the revenue to costs, profit and cash.
| Mueller Industries (MLI) | Kaiser Aluminum (KALU) | |
|---|---|---|
| Latest quarter | Q3 2026 | Q3 2026 |
| Revenue | $1.4B | $1.2B |
| Revenue growth, Y/Y | +32% | +44% |
| Operating margin | 19.8% | 4.5% |
| Net earnings | $221M | $31.0M |
| Net margin | 15.6% | 2.6% |
| Operating cash flow | $337M | $101M |
| Free cash flow | $315M | $72.3M |
| Market value | $11.7B | $1.8B |
| P/E | 7.8× | 8.3× |
| Analysts’ mean target | $78.00 | $141.00 |
Where the revenue comes from
Mueller Industries
- Piping Systems: $876M (62%)
- Industrial Metals: $403M (28%)
- Climate: $140M (10%)
Kaiser Aluminum
- Packaging: $561M (46%)
- Aero Hs Products: $292M (24%)
- Ge Products: $278M (23%)
- Automotive Extrusions: $82.9M (7%)
Questions
Which is bigger, Mueller Industries or Kaiser Aluminum?
Mueller Industries is the larger company: $1.4B of revenue in its latest quarter (Q3 2026) against $1.2B for Kaiser Aluminum (Q3 2026).
Is Mueller Industries or Kaiser Aluminum growing faster?
Kaiser Aluminum is growing faster (+44% against +32% a year earlier).
Which is more profitable, Mueller Industries or Kaiser Aluminum?
Mueller Industries is more profitable, with an operating margin of 19.8% against 4.5%.
More: Mueller Industries earnings · how Mueller Industries makes money · Kaiser Aluminum earnings · how Kaiser Aluminum makes money
From the companies' latest 10-Q, 10-K or earnings release (10-Q filed Oct 21, 2026; 10-Q filed Oct 22, 2026). Fiscal quarters can end on different dates. Not investment advice.