Shares in Industrial and Commercial Bank of China (ICBC) have risen 14.6% on its Hong Kong debut, following the world's biggest flotation.
ICBC's shares have proved to be very popular
The share price closed at 3.52 Hong Kong dollars ($0.45; 23.9p) on Friday from its start price of HK$3.07.
The bank, China's largest lender, raised as much as $21.9bn from its dual listing in Shanghai and Hong Kong.
China's surging economy, which is set to grow by more than 10% this year, has created strong demand for bank shares.
Shares were at one stage 18% above thier opening value.
Four of China's banks have floated since last year, however, there are fears that banks have been overvalued, with questions raised over levels of bad debt.