Shares of Hong Kong-based investment bank CSC Financial (06066.HK) soared 9.67% to close at HK$7.52 on Monday, as investors cheered the company's strong profit growth in the third quarter despite a slight revenue decline.

In its earnings report released before the market open, CSC Financial posted a 6.4% year-over-year increase in net income to CN¥1.99 billion for the quarter ended September 30th. Revenue dipped 2.1% to CN¥4.82 billion, but the company's profit margin expanded from 38% to 41% thanks to lower operating expenses.

While earnings per share of CN¥0.15 missed analyst estimates of CN¥0.17, the overall earnings results appear to have outweighed the slight revenue miss. Analysts note CSC's stock had already climbed 16% in the past week, likely in anticipation of the strong profit figures. The Hong Kong capital markets firm is expected to deliver 15% annual revenue growth over the next three years, outpacing the industry average.