(Yicai Global) Dec. 21 -- The soaring new energy vehicle sector pushed Shenzhen's tech board to close over 3 percent higher today. That made battery giant Contemporary Amperex Technology the most valuable stock to ever have featured on the board.

The ChiNext Price Index, which tracks growth enterprises in Shenzhen, jumped 3.66 percent to 2,882.44 in the afternoon.

Other mainland equity benchmarks were also surging. The Shenzhen Component Index was at 14,134.85, up 2.03 percent. The Shanghai Composite Index climbed 0.76 percent higher to 3,420.57.

Shares of CATL [SHE:300750] rose 12.07 percent to close at a record high of CNY325 (USD49.70), making it the first company on the tech-heavy ChiNext to exceed CNY700 billion (USD106.9 billion) in market cap.

The electric fever was catching on. Carmaker BYD [SHE:002594] and battery tester Nebula Electronics [SHE:300648] both rose as much as they could over one day.

Editor: Emmi Laine