Santa Claus Rally Explained | Why Markets Tend to Rise After December 15
Every December, markets start whispering about the Santa Claus rally. But here’s the part that often gets lost in the holiday noise: Santa doesn’t rush. He tends to arrive after December 15.
Looking back at 75 years of S&P 500 data, the pattern is surprisingly consistent. The first half of December is usually… fine. Sometimes choppy. Sometimes flat. But the stronger upside bias historically kicks in during the second half of the month, driving December’s long-term average return to around 1.4%.

📈 Why the late surge?
A few factors come into play: institutional investors making final portfolio adjustments, lower trading volumes creating less resistance, and that general year-end optimism that seems to lift everything. It’s like the market saves its best moves for the holiday finale.



