Cambricon has granted shares to 85% of its workforce and AMEC to more than 97%, as Chinese chip firms use equity to hold on to engineers.

Companies are rolling out an unprecedented wave of stock grants amid fierce domestic headhunting and an intensifying US-China tech race.

Cambricon has granted shares to 85% of its workforce and AMEC to more than 97%, as Chinese chip firms use equity to hold on to engineers.