The 6,760 and 6,790 levels linger below as potential support
…After last Monday’s SPX close at 6,817, we officially moved into a bullish seasonal period, with the second half of December averaging a 1.30% return. Coincidentally, a 1.30% advance from the December 15th close would push the SPX into resistance in the 6,900 area, where we saw highs in October and earlier this month...”
- Monday Morning Outlook, December 22, 2025
The flow of news around the holidays tends to be slower-than-normal, but a stronger-than-expected third-quarter gross domestic product (GDP) report supported stocks last week, conveniently following a historical bullish seasonality script.
In fact, in Wednesday’s shortened Christmas Eve session, the S&P 500 Index (SPX--6,929.94) moved above its late October intraday high at 6,920. This breakout followed unsuccessful attempts to clear the 6,900-century mark earlier this month and was on the heels of a record closing high on Tuesday.
“A Santa Claus rally refers to the sustained increases found in the stock market during the last five trading days of December through the first two trading days of January. Since 1950, during this seven-day trading window, the S&P 500 has gained an average of 1.3% and been positive 79% of the time”
- Santa Claus Rally: What It Is and Means for Investors, Investopedia
Not only is the second half of December a bullish seasonal period, but last Wednesday began a period often marked by a "Santa Claus rally," per the excerpt above. Based on the average move in this seven-day period and the SPX’s Dec. 22 close at 6,878.49, the SPX would be expected to rise to 6,967.91 by Monday, Jan. 5.
For what it's worth, Santa Claus did not show up for bulls during this period last year, as Christmas Eve close marked a short-term top into mid-January. The SPX’s decline on the day after Christmas last year may have hinted at short-term trouble because Dec. 26 is higher 85% of the time since 1953, per research from Bespoke, the most consistently bullish day of the year. With Friday’s lower close, it remains to be seen if Santa answers the bell for bulls.
Last week was the second time this year that a breakout occurred above a prior all-time intraday AND closing high, after going more than one month without this happening. The first time this occurred was late June, when the SPX went on to trend higher in an orderly way, using its 30-day moving average as support on mild pullbacks as it hit new high after new high before entering a choppy phase that began in late October. This momentum could favor the bulls as the last three trading sessions of 2025 begin this week.

“… remember that quarterly expiration is imminent. The SPX Dec. 31 quarterly expiration 7,000 strike is home to sold calls as part of J.P. Morgan’s (JPM’s) quarterly expiration collar strategy executed at the end of each quarter. This implies that if the SPX breaks out above the 6,900-level by year end, the 7,000-millennium mark could be a significant speed bump from both a psychological and options-related vantage point”
- Monday Morning Outlook, December 22, 2025
With new highs last week, there is little in the way of technical resistance overhead. Potential option-related resistance at SPX 7,000 lingers into quarterly expiration on Dec. 31, however. This 7,000-millennium mark is just 70 points overhead, or about 1% above Friday’s close. If the SPX explodes through 7,000 this week, the area around 7,058 could be resistance, as this level is 20% above last year’s close. Round year-to-date percent return levels tend to mark important hesitation or pivot points, as we saw in August and September when the SPX approached the level 10% above the 2024 close.
If this is a failed breakout that pushes the SPX back below the late-October highs, the first level of support is in the area of 6,760 (early October resistance) and 6,790 (site of the 30-day and 50-day moving averages).
“The huge short interest on SPX components has and continues to be one of the biggest sentiment-based arguments for bulls in the context of the SPX hitting new all-time highs,,, In order for the next stage of major short covering on a rally, the SPX must move through resistance…”
- Monday Morning Outlook, December 15, 2025
Last week, I reasoned that amid the bullish seasonality, I wouldn’t be shocked if the SPX remained locked in its range, as I suspected there was little cash on the sidelines that could be supportive of a rally above resistance. After all, fund managers are sitting on low cash levels and if the action in the equity options market is indicative of short-term traders’ positioning, there was little cash from this group to fuel a rally.
But I said two weeks ago that if a breakout did occur, the shorts were a potential source of fuel to keep the rally going. Per the latest data on short interest that was released last week by the exchanges as of mid-December, this source of fuel grew larger. Note in the chart below that an increase of short interest on SPX components by 2.5% to a new multi-year high.
Moreover, with the SPX nearly 18% above its 2024 close, total short interest on SPX components is up 45%. In other words, the theme that was evident going into this year remains a major theme going into 2026 – a highly shorted market that could contribute to short-covering rallies at various times or contribute to shallow or brief pullbacks as shorts using such pullbacks to cover losing positions.
Thank you for checking in on my market views from week to week. I hope you are enjoying the holiday season, and I wish you and your families a Happy New Year! I look forward to guiding you through 2026 by providing insight into the risks and rewards from technical and sentiment-based perspectives.

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