How Lenovo, world's worst tech stock 5 months ago, became China's hottest

What was the world’s worst technology stock only months ago has become China’s hottest, staging a defiant comeback since it was booted off Hong Kong’s benchmark gauge.

Lenovo Group Ltd. has seen its shares surge 43 percent in the nearly five months since the announcement of its removal from the Hang Seng Index -- an increase that beats every other Chinese technology stock during the same period while outperforming the broader Hang Seng index that this month slumped into a bear market.

The rapid reboot of the PC manufacturer’s shares is a welcome surprise for investors who had grown accustomed