StarHub shares surged, drawing a query on unusual trading activity from the Singapore Exchange.
StarHub shares closed at $1.14, up 7.55%. The bulk of the gains was in the last half hour just before the market ended for the day.
In its response just over an hour later, the company says it is not aware of what might have caused the share price to move the way it did, and that it believes it is in compliance of relevant regulations.
The telco is due to report its full year earnings on Feb 7.
In recent months, several analysts have been suggesting that the local mobile sector might see some consolidation.
