* The S&P 500 posted a 1.3% weekly gain.
* The index is currently 0.5% below its record close reached on June 2nd, 2026.
* The S&P 500 is up 10.7% year-to-date.
* The S&P Equal Weight is up 11.8% year-to-date.
* The S&P 500 reached an all-time high of 1565.15 on October 9, 2007.
* The index dropped approximately 57% from its high by March 9, 2009.
* A new all-time high was reached on March 28, 2013, closing at 1569.19.
* The largest intraday price volatility since December 24th, 2018, occurred on April 9th, 2025, with a range of 10.77%.
* The S&P 500 is market cap-weighted; the S&P Equal Weight Index weights each company equally.
* ETFs associated with the S&P 500 include IVV, SPY, VOO, SPYM, and RSP.

The S&P 500 posted a 1.3% gain in its second consecutive winning week. The index is currently 0.5% below the record close reached on June 2nd, 2026. Year-to-date performance shows the S&P 500 at 10.7%, while the S&P Equal Weight index is up 11.8%.
The analysis of historical data surrounding the S&P 500 since October 9, 2007, reveals significant volatility. The period following the peak of October 9, 2007, included a severe drawdown, with the index dropping approximately 57% by March 9, 2009, which marked the start of the Global Financial Crisis. A subsequent record high was reached on March 28, 2013, closing at 1569.19.
Volatility metrics indicate that the largest intraday price volatility since December 24th, 2018, occurred on April 9th, 2025, reaching 10.77%. Trends identified by moving averages show that the index has been above the 50-day moving average since June 29th, 2026, and above the 200-day moving average since April 8th, 2026, with the 50-day average remaining above the 200-day average since July 1st, 2025.
The S&P 500 is a market capitalization-weighted index, whereas the S&P Equal Weight Index features equal weighting for its constituents. This difference resulted in the S&P Equal Weight index showing a higher year-to-date gain compared to the standard S&P 500.

The comparison between the market-cap-weighted S&P 500 and the equal-weighted S&P Equal Weight reveals a divergence in performance over time, specifically showing that the latter achieved a higher year-to-date gain (11.8% versus 10.7%). This suggests that factor exposure matters significantly, as market capitalization weighting filters results differently than equal weighting across periods of growth or stress.
The historical view of volatility, especially when contextualized around the Global Financial Crisis of 2007–2009, implies that periods of peak valuation are not inherently associated with sustained stability; rather, they frame extreme risk cycles. The trajectory moving from the 2007 peak through the subsequent trough demonstrates that recovery is often protracted, as evidenced by the multi-year gap until the next record high in 2013.
The shift in focus from a simple performance metric to volatility analysis—overlaying price with intraday range and utilizing moving averages—forces an examination of dynamic risk rather than static levels. The finding that the index has been above key moving averages since specific dates (e.g., above the 50-day average since June 29th, 2026) establishes a baseline for trend analysis within this timeframe. This structure prompts questioning: If volatility remains high, how do the different weighting schemes—market cap versus equal weight—influence the experience of those fluctuations for investors? What historical precedents exist for market behavior when shifts in underlying correlation (as suggested by the comparison between the two indices) occur?