These were the best-performing ASX 200 shares in December 2025

The S&P/ASX 200 Index (ASX: XJO) was back on form in December and pushed higher.

During the month, the benchmark index managed to record a gain of 1.15% to end at 8,714.3 points.

While that was positive for investors, there were many ASX 200 shares that vastly…