Bubble or bargain?

Pedestrians walk past an electronic screen displaying the Hang Seng Index in Hong Kong, China, on Wednesday, Nov. 22, 2017. Hong Kong’s benchmark equity gauge rose above the 30,000 level for the first time in a decade as Tencent Holdings Ltd. extended its rally and Chinese financial shares climbed. Photographer: David Paul Morris/Bloomberg

Analysts question if tech giants will be able to maintain stellar earnings and justify their lofty values

THE valuation of tech companies has reached dizzying heights, or at least that is how it is being viewed.