Santa Claus Rally Window Is Opening

BY BILL GRIFFO 

December 22, 2025

Hey Income Hunters,

Santa Claus Is Warming Up the Sleigh — The Rally Window Is Opening

Just when most investors are mentally checking out for the holidays, the market is quietly setting up one of its most reliable seasonal moves of the year — the Santa Claus Rally.

And according to the historical data, the clock is ticking.

For decades, the strongest stretch of the Santa Claus Rally has occurred between December 24 and January 3 — a narrow window when liquidity thins, tax-loss selling fades, bonus money hits accounts, and optimism replaces fear. 

That window is opening right now.

Even more interesting?
The last two years were negative during this period — and historically, the market has never produced three negative Santa Rally periods in a row.

That alone should have investors sitting up in their chairs.

 

What Is the Santa Claus Rally — Really?

The Santa Claus Rally isn’t folklore. It’s a measurable seasonal phenomenon observed since the 1950s

Historically:

  • The S&P 500 rises about 1.3%–1.7% on average during this window

  • Roughly 75%–80% of years are positive

  • Gains during this period often set the tone for January

When Santa shows up, he often brings momentum traders, short-covering, and performance-chasing fund managers with him.

Why the Last Two Years Failed — And Why That Matters Now

The last two Santa Rally windows were disappointments:

  • Heavy macro uncertainty

  • Aggressive Fed tightening

  • Persistent inflation fears

  • Tax-loss selling that lingered too long

But here’s the key insight for long-term investors:

The “official” Santa Claus Rally begins on December 24. It covers the last 5 trading days of December + the first 2 of January. SPX was up 77% of the time. 

The last 2 were negative, but there has never been a third straight down Santa Claus Rally. The chart below shows S&P 500 returns during the Santa Claus Rally:

 

 

Markets are probabilistic machines — not guarantees — but seasonality like this tends to reassert itself, especially when sentiment remains cautious and positioning is light.

Right now, many investors are still underweight equities, holding excess cash after a volatile year. That’s dry tinder for a late-year move.

 

What the Charts Are Telling Us

The seasonal charts confirm three important points:

  1. December 24–January 3 is the sweet spot
    Returns outside this window are far less consistent.

  2. After two weak years, the odds skew bullish
    Mean reversion matters — especially in seasonal patterns.

  3. Santa Rallies often occur quietly
    They begin when participation is low — not when CNBC is screaming “new highs.”

In other words, the rally usually starts before most investors believe it.

Seasonal Santa Claus Rally Trend 20-year Average Pattern

 

 

Market Impact: Why This Matters Beyond Year-End

A successful Santa Rally does more than pad December returns:

  • It boosts risk appetite into January

  • Encourages reallocation out of cash

  • Supports cyclical sectors and growth names

  • Often pressures bonds as capital rotates back into equities

This lines up with themes we’ve discussed before — especially liquidity quietly improving while investors remain skeptical.

(If you missed it, revisit “Powell Surrenders… Year-End Blow-Off Ahead” here:
Year-end Blow-oo Ahead

Santa Claus rally Outcomes % of years Positive vs Negative

 

 

The Bottom Line

Santa doesn’t knock loudly. He slips in quietly when pessimism is high and liquidity is thin.

With:

  • A historically bullish window opening now

  • Two prior negative years already behind us

  • Investors still cautious and underexposed

…the odds favor a rally that’s just getting started.

Don’t blink — this window is short, but it matters.

Live and Trade With Passion My Friends and Have a very Merry Christmas and Happy New Year!

Bill Griffo

 

Bill Griffo

Head Income Trader

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William Griffo

William Griffo

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About the Author

William Griffo

William Griffo

Former CBOE floor trader and CIO at Karman Line Capital. Author of ‘The Option Traders Hedge Fund’ with over 30 years of options trading experience.

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