Buoyant trend on bourses leads options traders to make bets

Hong Kong options traders have never been so bullish on the city's stock market after surging inflows from the Chinese mainland propelled the Hang Seng Index to the biggest rally worldwide last week.

Wagers on gains for the benchmark gauge increased to the most expensive level on record versus bearish ones on Friday as the measure completed a 7.9 percent weekly advance, the most among major equity gauges.

Surging demand for bullish contracts has been a past harbinger of gains.