Hong Kong financial shares fell Friday. Beijing's new capital controls are causing concern. Global banks with mainland China business face tighter rules. Offshore account openings and fund flows are under stricter scrutiny. This impacts wealth management and cross-border banking services. Investors are watching the effects on business growth and earnings.

Some banks are exercising more caution with offshore accounts for their mainland China clients amid tighter investment controls from Beijing.

The luxury market is under the spotlight as it has been the key driver for the city’s property market recovery this year.