The company now expects FY27 net operating income of at least £550m, up from previous guidance of £460m to £480m, with EBITDA guidance of £250m.
FY2027 guidance for operating expenses excluding variable remuneration of around £280m remains unchanged.
"The strength of this performance reflects the scale of our B2B platforms driving operational gearing and delivering higher profit margins as income growth is delivered against a largely fixed cost base," CMC said. "Our B2B platform business is well positioned to scale with several important milestones expected over the next 12 months and a continuous pipeline of new B2B opportunities."
The company said operational gearing and investing for growth through B2B platforms, products, technology and partnerships continue to drive profit margins higher.
At 1414 BST, the shares were up 36% at 625p.
Jefferies, wihch rates the stock at 'buy' with a 500p price target, said: "Such confidence after only a quarter of the financial year, and so soon after lower guidance in the FY26 preliminary results, is striking."
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