New index highs, narrow market participation
Between October 2 and the October 7 close, the S&P 500 gained 1.02%, while the median return across 500 component stocks was just 0.21%. The index's advance remains concentrated in selected leaders rather than evenly distributed across the market.
1. Participation is improving, but remains weak
Only 44.3% of stocks are above the 200-day moving average, compared with 41.3% on October 2. This is a welcome short-term improvement, yet breadth stood at 55.5% four weeks earlier. The latest recovery has not reversed the broader deterioration.
2. Most stocks are far below their own peaks
Among the 497 stocks with valid drawdown data, 75.7% are more than 10% below their 52-week closing highs, 39.2% are more than 20% below, and 19.3% are more than 30% below. The median 52-week drawdown is approximately −16.0%. These statistics contrast sharply with the index reaching new highs.
3. Volume conditions remain negative
The median signed 20-session volume balance has improved from −20.53% on October 2 to −13.03% on October 7. Only 29.7% of eligible stocks have a positive balance. Median relative trading volume is about 0.95× normal levels, with just 12 of 499 eligible securities recording both a five-session gain and relative volume of at least 1.5×.
That is an improvement from recent weakness, but it does not yet demonstrate broad or sustained accumulation.
4. Leadership is concentrated in selected technology and power stocks
Notable weekly advances included PTC (+34.4%), Autodesk (+10.9%) and Broadcom (+6.0%), alongside positive performance in major technology names. Power-related companies were particularly strong: Vistra (+19.1%), Constellation Energy (+16.4%) and NRG Energy (+14.1%).
AI development and data-center electricity demand are plausible market themes associated with parts of this leadership. The scanner documents prices and trading patterns; it does not establish the underlying cause of individual moves.
5. The typical stock still lags the benchmark
Only 21.6% of constituents beat the S&P 500 over four weeks. The median stock underperformed the benchmark by approximately 5.45 percentage points over that period. New index highs therefore do not describe the experience of most component stocks.
6. What would signal broader strength?
A sustained increase in constituents above MA200, fewer deep drawdowns, more positive 20-session volume balances and a larger share beating the benchmark would provide stronger confirmation. Breadth divergences can persist for extended periods and do not, by themselves, predict an imminent decline.
Bottom line: the S&P 500 is making new highs while much of its underlying market remains in correction. The latest internal improvement is real but still narrow; a convincing recovery requires wider participation.
Complete S&P 500 Ranking — All 500 Securities
Original Weekly Analysis scanner workbook · Data through October 7, 2026.
Upload and processing of the original Excel will activate the full classification.
Methodology and limitations
Independent quantitative research based on the original Structural Alpha scanner Excel and the constituent-level and weekly summary histories supplied for the October 2–7, 2026 observation period. The historical sample contains 49 weekly observations from November 2025 through October 2026.
MA200 breadth applies to eligible stocks with valid 200-session averages. Drawdowns are relative to each stock's highest closing price in the preceding 52 weeks, not its intraday high. The signed 20-session volume balance is a quantitative indicator rather than direct proof of institutional flows.
Corporate actions, changes in constituents, price adjustments, missing observations and differing market histories can influence results. The scanner's classifications and rankings are descriptive, not personalized investment advice.
Structural Alpha · Independent quantitative research · For information only; not investment advice. Return to research archive