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Koppers Holdings vs Trex: KOP and TREX compared

Koppers Holdings is the larger company: $499M of revenue in its latest quarter (Q3 2026) against $360M for Trex (Q3 2026). Trex is growing faster (+26% against +3% a year earlier). Trex is more profitable, with an operating margin of 20.2% against 6.1%.

Koppers Holdings vs Trex, latest quarterKoppers Holdings vs Trex, latest quarterKoppers Holdings (KOP)Trex (TREX)Revenue$499M$360MRevenue growth, Y/Y+3%+26%Operating margin6.1%20.2%Net margin2.9%14.6%Free cash flow$19.4M$135M

Where the money goes: KOP and TREX

Koppers Holdings (KOP) · Q3 2026

Koppers Holdings, Q3 2026: revenue $499M (+3% year over year), operating margin 6.1%, net earnings $14.7M, operating cash flow $30.6M. The chart follows the revenue to costs, profit and cash.

Trex (TREX) · Q3 2026

Trex, Q3 2026: revenue $360M (+26% year over year), operating margin 20.2%, net earnings $52.5M, operating cash flow $153M. The chart follows the revenue to costs, profit and cash.

Koppers Holdings (KOP)Trex (TREX)
Latest quarterQ3 2026Q3 2026
Revenue$499M$360M
Revenue growth, Y/Y+3%+26%
Gross margin—36.0%
Operating margin6.1%20.2%
Net earnings$14.7M$52.5M
Net margin2.9%14.6%
Operating cash flow$30.6M$153M
Free cash flow$19.4M$135M
Market value$589M$5.6B
P/E—31.6×
Analysts’ mean target$53.33$59.58

Questions

Which is bigger, Koppers Holdings or Trex?

Koppers Holdings is the larger company: $499M of revenue in its latest quarter (Q3 2026) against $360M for Trex (Q3 2026).

Is Koppers Holdings or Trex growing faster?

Trex is growing faster (+26% against +3% a year earlier).

Which is more profitable, Koppers Holdings or Trex?

Trex is more profitable, with an operating margin of 20.2% against 6.1%.

More: Koppers Holdings earnings · how Koppers Holdings makes money · Trex earnings · how Trex makes money

From the companies' latest 10-Q, 10-K or earnings release (10-Q filed Nov 6, 2026; 10-Q filed Nov 4, 2026). Fiscal quarters can end on different dates. Not investment advice.