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Perimeter Group vs Ecovyst: PRM and ECVT compared

Perimeter Group is the larger company: $390M of revenue in its latest quarter (Q3 2026) against $309M for Ecovyst (Q3 2026). Ecovyst is growing faster (+51% against +24% a year earlier). Perimeter Group is more profitable, with an operating margin of 106.8% against 9.5%.

Perimeter Group vs Ecovyst, latest quarterPerimeter Group vs Ecovyst, latest quarterPerimeter Group (PRM)Ecovyst (ECVT)Revenue$390M$309MRevenue growth, Y/Y+24%+51%Gross margin61.1%19.0%Operating margin106.8%9.5%Net margin78.1%5.9%

Where the money goes: PRM and ECVT

Perimeter Group (PRM) · Q3 2026

Perimeter Group, Q3 2026: revenue $390M (+24% year over year), operating margin 106.8%, net earnings $304M, operating cash flow $163M. The chart follows the revenue to costs, profit and cash.

Ecovyst (ECVT) · Q3 2026

Ecovyst, Q3 2026: revenue $309M (+51% year over year), operating margin 9.5%, net earnings $18.2M, operating cash flow $25.2M. The chart follows the revenue to costs, profit and cash.

Perimeter Group revenue by segment, Q3 2026Perimeter Group revenue by segment, Q3 2026Revenues from products$327MServices and others$63.2M
Ecovyst revenue by segment, Q3 2026Ecovyst revenue by segment, Q3 2026Virgin sulfuric acid$163MRegenerated sulfuric acid and tre…$107MCatalyst activation and sulfur di…$39.0M
Perimeter Group (PRM)Ecovyst (ECVT)
Latest quarterQ3 2026Q3 2026
Revenue$390M$309M
Revenue growth, Y/Y+24%+51%
Gross margin61.1%19.0%
Operating margin106.8%9.5%
Net earnings$304M$18.2M
Net margin78.1%5.9%
Operating cash flow$163M$25.2M
Free cash flow$150M—
Market value$5.2B—
P/E92.9×—
Analysts’ mean target$41.50—

Where the revenue comes from

Perimeter Group

Ecovyst

Questions

Which is bigger, Perimeter Group or Ecovyst?

Perimeter Group is the larger company: $390M of revenue in its latest quarter (Q3 2026) against $309M for Ecovyst (Q3 2026).

Is Perimeter Group or Ecovyst growing faster?

Ecovyst is growing faster (+51% against +24% a year earlier).

Which is more profitable, Perimeter Group or Ecovyst?

Perimeter Group is more profitable, with an operating margin of 106.8% against 9.5%.

More: Perimeter Group earnings · how Perimeter Group makes money · Ecovyst earnings · how Ecovyst makes money

From the companies' latest 10-Q, 10-K or earnings release (10-Q filed Nov 5, 2026; 10-Q filed Nov 5, 2026). Fiscal quarters can end on different dates. Not investment advice.