A unit of Sinopec, China’s largest oil refiner, has trimmed its stake in battery maker Contemporary Amperex Technology Co. by more than half following a dramatic post‑listing rally.

The move follows a sharp surge in CATL shares, prompting the refinery’s subsidiary to reassess its exposure to the fast‑growing battery sector. The divestment signals a shift in focus from energy refining to core petrochemical operations.

Investors will watch how the reduction affects CATL’s shareholder base and whether it signals wider investor sentiment toward Chinese battery firms. For Sinopec, the sale frees capital that can be redirected into refining upgrades or new renewable projects.

The decision underscores the volatility of battery stocks and the strategic recalibration of state‑backed enterprises amid fluctuating market dynamics.