The Real Santa Claus Rally Starts Christmas Day, Not October

The Dow Jones Industrial Average has risen 77% of the time between Christmas and the second day of January since 1896 — and that, according to Mark Hulbert, is the only "Santa Claus rally" with any statistical significance.

Everything analysts label a Santa Claus rally before Christmas, he argues, is marketing.

What's driving the 'early Santa' hype?

Hulbert, a regular MarketWatch contributor whose Hulbert Ratings audits investment newsletters, says Wall Street habitually takes Santa's name in vain. If this year follows the pattern, analysts will soon brand every autumn rally, however small, as a Santa Claus rally.

He sees motive, not statistics, behind the labels. Analysts chasing attention are, in his words, "just as shameless as the retailers who, earlier and earlier every year, start displaying their Christmas merchandise."

The examples pile up. In mid-October of last year, two analysts Hulbert follows pronounced a Santa Claus rally imminent. In late October 2025, another analyst advised clients to sell underperforming stocks to boost profits during the supposedly upcoming rally. Google search data from last year's fourth quarter shows interest in the phrase "Santa Claus rally" already picking up in late October.

The takeaway: the "early Santa Claus rally" is a sales pitch, not a seasonal pattern.

Do November and December offer an edge?

Hulbert tested the claim directly. For every month, he calculated the Dow's maximum rally potential — the gain from a month's lowest close to the highest close of the following month. It's a clairvoyant's measure: you'd need to know in advance when the index bottoms and peaks to capture it. But as a test of seasonal strength, it works, because it captures whether the year's final two months hold unusually large rally potential.

They don't. Averaged across the entire history of the DJIA, which dates to the late 1890s, the November-December rally potential is indistinguishable from the all-month average.

That doesn't mean the market won't rally between now and Christmas. It means that if it does, the gain owes nothing to Santa Claus. Hulbert's analogy: "With just as much statistical validity, you could claim that any rally in October is a 'Great Pumpkin Rally.'"

The takeaway: for an edge to exist, November and December would need to outperform other months — and the data says they don't.

What are the real numbers?

The genuine Santa Claus rally runs a narrow window: Christmas through the second day of January. The record since 1896, per Hulbert's calculations:

• The DJIA rose 77% of the time over that window, with an average gain across all years of 1.5%.
• Over all periods of similar length, the DJIA rose just 56% of the time, with an average gain of 0.2%.
• The gap between the two is significant at the 95% confidence level statisticians use to judge whether a pattern is genuine.

A 1.5% average gain against a 0.2% baseline is a real spread, backed by nearly 130 years of data. The 77% hit rate against 56% elsewhere is the strongest figure in the entire seasonal story.

The takeaway: one narrow post-Christmas window, not a two-month stretch, carries the statistical weight.

What should investors do?

Hulbert's advice is blunt: "Be patient. The only Santa Claus rally that counts won't arrive until Christmas — just like the big man himself."

For investors fielding October calls to reposition portfolios ahead of a supposedly imminent Santa rally, the data suggests waiting. The pattern that clears statistical scrutiny doesn't begin until December 25.