BYD’s Diamond-Cooling Pact and Dividend Date Signal Pivot as Profit Trough Nears

BYD deepens diamond thermal management R&D for EVs and data centers, launches new hybrids, and declares dividend despite 55% Q1 profit slump; Goldman sees trough.

BYD is threading a needle between near-term margin pressure and long-term technical edge. The Chinese automaker has deepened its research partnership with Huifeng Diamond on diamond-based thermal management, while also scheduling a dividend payment that underscores its commitment to shareholder returns even as first-quarter earnings cratered 55% year on year.

The cooling collaboration, which builds on a joint laboratory established in 2020, targets heat dissipation for power electronics and battery systems. Diamond composites offer far superior thermal conductivity compared to conventional materials, a critical advantage as EV powertrains push toward 800-volt architectures and faster charging speeds. The partners aim to have a pilot line running by 2026 and then scale to mass production. Huifeng Diamond estimates that BYD’s vehicle-testing platform can shorten development cycles by more than 30%.

The timing aligns with broader industry trends. At Computex 2026, server maker Wiwynn demonstrated AI data-center infrastructure using diamond composite cooling and liquid-metal thermal interfaces. Both the automotive and AI hardware sectors are grappling with the same heat-density challenge, and BYD is positioning itself to supply a solution.

On the product front, BYD is keeping up the pressure at home with a flurry of new hybrid launches. The Sealion 06 DM-i, a plug-in hybrid SUV, hit the Chinese market priced from 129,900 yuan. It uses the fifth generation of BYD’s DM technology and boasts a combined CLTC range of more than 1,800 kilometres. Higher trim levels add LiDAR and the “God’s Eye B” intelligent driving system. A second model, the Song Ultra DM-i, is due on May 28, also equipped with the fifth-generation DM powertrain comprising a 1.5-litre petrol engine and a 175-kilowatt electric motor. Buyers can choose between a 26.6-kilowatt-hour battery offering 205 kilometres of electric range or a 38-kilowatt-hour unit good for 310 kilometres.

The aggressive model offensive is designed to defend market share in China’s brutal price war, which was the main culprit behind BYD’s 55% profit slump in the first quarter of 2026. Goldman Sachs, however, sees that quarter as the trough. The bank expects a recovery in the second and third quarters, citing improving cost discipline and the arrival of new models with ultra-fast charging. That view has helped stabilise the stock.

In Hong Kong, BYD shares closed at 93.65 Hong Kong dollars, up 2.24% on the day, though the stock remains near the bottom of its 52-week range of 88.50 to 154.33 Hong Kong dollars. The board has proposed a dividend of 0.358 renminbi per share for the 2025 financial year. The ex-dividend date for H-shares is June 11, 2026, with payment scheduled for July 31, giving a yield of roughly 0.39% at the current price.

Overseas expansion offers another avenue to offset domestic pressure. Chinese automakers now hold 15% of the European electric-vehicle market, a figure analysts see as validation of BYD’s cost advantage and vertically integrated supply chain. The company is testing the Sealion 6 PHEV and Atto 2 DM-i in India, and the Dolphin G DM-i — BYD’s first model developed specifically for export markets — will launch in the UK in June 2026. The push comes as S&P predicts China could lead a decline in global light-vehicle demand in 2026, and as tariff threats in Europe remain an unresolved risk.

The next near-term catalyst is the Song Ultra DM-i launch on May 28. Whether BYD can convert its product pipeline into sales momentum in a softening home market will determine if the share price can break out of its current trough. The diamond-cooling research, meanwhile, positions the company for the next technology cycle — but that payoff is still years away.