Bank of Chongqing (1963) rose just 0.3 percent over its offer price while Mega Expo (1360) gained as much as 8.3 percent in the gray market, ahead of trading debuts for both firms today.
The mainland lender closed at HK$6.02, according to Phillip Securities, compared to the HK$6 mid- range of its offer price, while local events manager Mega Expo rose to HK$1.44, from HK$1.33.
Shanghai-based China Pioneer Pharma (1345) had a disappointing opening day, closing at HK$3.84, or 6.34 percent lower than its offer price. Each investor lost HK$260 per board lot of 1,000 shares.
Separately, three mainland firms ended bookbuilding yesterday.
Boyaa Interactive International drew HK$86.2 billion after being oversubscribed by 827 times. It is the highest amount frozen in an IPO this year.
The Shenzhen-based webgame developer, which also notched the highest number of subscribers, is famous for its online game Texas Poker.
Hefei-based Huishang Bank was oversubscribed by 10 times and froze HK$10.9 billion. Both Huishang and Boyaa start trading on Tuesday.
In other action, China Success Finance Group from Foshan saw its retail tranche oversubscribed by 20 times, with trading to start next Wednesday.
That came as Foshan peer Dong Peng Ceramics started pre-marketing its float.
The ceramic tile maker plans to raise at least HK$1.2 billion and the roadshow is expected next week. Chairman He Xinmin had vowed to take the firm public three years ago.
Meanwhile, the IPO boom is expected to continue as Deloitte China said funds raised locally will likely total HK$100 billion this year. Twenty more firms are expected to list in the remaining weeks and draw HK$30 billion.
Initial public offerings as of October 31 raised a total of HK$70.5 billion, up 44 percent on-year, Deloitte said.
That puts the main board in a strong position to surpass London as the third most-popular listing destination in the world, after the New York Stock Exchange and Nasdaq.