Weichai Power's H-shares and A-shares both registered gains. At the time of writing, the H-share price had increased by 7.64% to HK$32.4, with a turnover of HK$796 million. The A-share price was up more than 5%.

The movement follows an announcement by FTSE Russell on March 4 regarding quarterly review changes to its FTSE China Index Series. The adjustments, which include adding Weichai Power to the FTSE China 50 Index, will take effect after the market close on March 20, 2026.

In a research note, HSBC highlighted that Weichai Power's H-shares and A-shares have surged 73% and 61% year-to-date, respectively, driven by exposure to the AIDC business. The bank raised its forecast for the average selling price of Weichai Power's Generac diesel generator sets to RMB 2.2 million for 2026 and RMB 2.5 million for 2027. Further upside potential is anticipated from the launch of higher-capacity products, such as Generac's planned 3.5-4MW generator sets scheduled for 2026.

HSBC now expects large data center engines to contribute 6%, 12%, and 18% to Weichai Power's net profit in 2025, 2026, and 2027, respectively.