Energy, Consumer Staples, and Health Care were the only sectors to close higher in Monday's regular session, while eight others declined. The Energy Select Sector SPDR Fund (NYSE: XLE) led the gains with a 0.63% rise, contrasting sharply with the Technology Select Sector SPDR Fund (NYSE: XLK), which fell 1.62%.

The broader market followed a downward trajectory. The State Street SPDR S&P 500 ETF Trust (NYSE: SPY) dropped 0.81%, and the Invesco QQQ Trust (NASDAQ: QQQ) declined 1.53%. Meanwhile, the State Street SPDR Dow Jones Industrial Average ETF Trust (NYSE: DIA) fell 0.57%, and the iShares Russell 2000 Index Fund (NYSE: IWM) slipped 0.84%.

Sector performance breakdown

The session displayed a clear rotation into defensive names, with Energy providing the strongest support among cyclicals. The table below details the closing performance of all eleven sectors.

Leading sectors

Energy was the top performer, driven by large-cap strength. Chevron Corp (NYSE: CVX) rose 1.43%, ExxonMobil Holdings Corp (NYSE: XOM) gained 1.27%, and EOG Resources Inc (NYSE: EOG) added 0.49%.

Consumer Staples held firm with a 0.35% increase. Procter & Gamble Co (NYSE: PG) climbed 1.43%, Walmart Inc (NASDAQ: WMT) rose 1.02%, and Costco Wholesale Corp (NASDAQ: COST) advanced 0.70%.

Health Care edged up 0.11%. AbbVie Inc (NYSE: ABBV) led the group with a 0.74% gain, followed by Eli Lilly and Co (NYSE: LLY) at 0.51% and Johnson & Johnson (NYSE: JNJ) at 0.39%.

Lagging sectors

Technology faced the heaviest selling pressure, falling 1.62%. Oracle Corp (NYSE: ORCL) dropped 3.34%, Microsoft Corp (NASDAQ: MSFT) fell 1.93%, and Broadcom Inc (NASDAQ: AVGO) declined 1.18%.

Communication Services slid 1.43%, weighed down by Meta Platforms Inc (NASDAQ: META), which plunged 4.37%. Netflix Inc (NASDAQ: NFLX) lost 1.83%, and Alphabet Inc (NASDAQ: GOOG) fell 1.01%.

Consumer Discretionary retreated 1.19%. Tesla Inc (NASDAQ: TSLA) was the primary drag, falling 3.41%, while Amazon.com Inc (NASDAQ: AMZN) dropped 1.36%. McDonald's Corp (NYSE: MCD) saw a modest decline of 0.25%.

What the numbers show

The spread between the best-performing sector, Energy, and the worst, Technology, is 2.25 percentage points. This divergence is nearly double the magnitude of the decline in the S&P 500 ETF itself. While five sectors outpaced the S&P 500, the concentration of losses in high-growth areas like Technology and Communication Services suggests a defensive rotation rather than a uniform market sell-off.

The S&P 500 index is positioned in a historical "sweet spot" for fourth-quarter performance, according to Ryan Detrick, Chief Market Strategist at Carson Group. With the index up 12.90% year to date as of late September 25, it falls within the 10%-20% range that has historically preceded above-average Q4 returns.

Historical precedents point to gains

Data from Carson Investment Research indicates that when the S&P 500 rises between 10% and 20% through the end of the third quarter, the index has posted positive fourth-quarter returns in 18 out of 21 historical setups since 1950. This equates to an 85.7% positive rate. The average fourth-quarter return under these specific conditions is 5.3%.

Detrick highlighted that recent fourth-quarter performance has been "extremely strong," with the S&P 500 finishing higher in 12 of the past 13 years. The sole negative fourth quarter during this period occurred in 2018, when the index fell 14.0%, a period Detrick described as "the crash of 2018" and noted as the last midterm year under President Trump.

Comparative performance metrics

The following table compares the specific "sweet spot" conditions against broader historical averages and recent trends:

For all years since 1950, the average fourth-quarter gain for the S&P 500 is 4.2%, with positive returns occurring 80.3% of the time. The current year-to-date performance places the market in the upper tier of historical probability for year-end gains.

Market drivers and sector concentration

During an episode of the "Facts Versus Feelings" podcast, Detrick stated he expects a "strong fourth quarter" and maintains an overweight position in technology stocks. He noted that technology comprises 39% of the S&P 500, while communication services accounts for another 11%.

Sonu Varghese, Chief Macro Strategist at Carson Group, stated on the same podcast that technology sector revenues are expected to grow 40% in the third quarter. Detrick added that market history over the last century demonstrates that technology tends to lead bull markets.

Recent market performance

As of the latest close, the S&P 500 index has advanced 13.12% year to date. The Nasdaq Composite index was up 16.46%, and the Dow Jones Industrial Average gained 7.83% YTD.

On Friday, major exchange-traded funds tracking these indices closed higher:

• SPDR S&P 500 ETF Trust (NYSE: SPY) rose 0.54% to $771.35.
• Invesco QQQ Trust ETF (NASDAQ: QQQ) gained 0.46% to $744.50.
• State Street SPDR Dow Jones Industrial Average ETF Trust (NYSE: DIA) ended 0.94% higher at $517.49.

What the numbers show

A divergence exists between the long-term historical average and the recent short-term trend. While the average Q4 return since 1950 is 4.2%, the average over the last 13 years is slightly higher at 5.4%, with a median of 6.5%. This suggests that the recent era has been more conducive to Q4 rallies than the broader post-1950 history. However, the single outlier in this recent streak, the 2018 decline of 14.0%, was significantly more severe than the typical annual volatility, highlighting that while the frequency of losses has decreased, the magnitude of potential downside remains substantial in midterm election years.