Top 10 Contributors
S&P 500: 7690.73 | 📈 Up (0.46%)
Market Structure Score
49/100
Weak Structure
🔁 Regime shift: Neutral → Narrow / Fragile
Headline index performance continued to rely disproportionately on a concentrated leadership cohort, suggesting underlying strength remained narrower than headline returns implied. Internal confirmation remains limited, reducing confidence in the durability of the current market character.
Underlying market conditions have weakened sufficiently to raise questions about the durability of the current trend. The Market Structure Score of 49/100 reflects low confidence in this assessment.
⬥ 169 of 502 stocks advanced (▲33.7%)
⬥ 324 stocks declined (▼64.5%)
⬥ 9 stocks unchanged
⬥ Leadership remained concentrated.
⬥ Leadership continued to rotate.
Leadership continued to rotate across sectors, but weakening participation and internal confirmation suggest the rotation is becoming less supportive of the broader market trend.
Elevated leadership concentration could reduce the market’s resilience. Rapid leadership rotation suggests institutional conviction remains fluid. Breadth continues to lag headline index performance. Participation has weakened across the broader market. Trading conviction remains below recent norms. Decliners continue to outnumber advancers. Should these conditions deteriorate further, confidence in the current market assessment would likely weaken.
The outlook remains cautious until participation broadens, leadership stabilizes, and internal confirmation begins to recover.
The weight of the internal evidence continues to support a narrow momentum leadership market environment with low confidence. While short-term price fluctuations are inevitable, sustained improvement in participation and leadership would reinforce the current assessment, whereas renewed deterioration in market internals would warrant a more defensive interpretation.
Market Signals
▶ ⚠️ Weak participation — selling pressure dominated the session.
▶ ⚠️ Leadership became highly concentrated in a handful of mega-cap stocks.
▶ 🔄 Leadership rotation accelerated.
▶ 📉 Participation deteriorated noticeably from the previous session.
▶ ⚠️ Large-cap leadership outpaced the broader market.
Top Contributors (>0.01%)
| Ticker | Return | Contribution | Share | Impact_Efficiency | Rank |
|---|---|---|---|---|---|
| AMZN | 4.98% | 0.19% | 14.47% | 0.038059 | 1 |
| NVDA | 1.38% | 0.11% | 8.61% | 0.081569 | 2 |
| TSLA | 3.76% | 0.07% | 5.19% | 0.018065 | 3 |
| GOOGL | 1.01% | 0.06% | 4.67% | 0.060595 | 4 |
| AVGO | 1.78% | 0.05% | 4.14% | 0.030490 | 5 |
| MU | 2.97% | 0.05% | 3.90% | 0.017208 | 6 |
| MSFT | 0.84% | 0.04% | 3.15% | 0.048795 | 7 |
| AMD | 1.76% | 0.02% | 1.76% | 0.013094 | 8 |
| SNDK | 5.53% | 0.02% | 1.68% | 0.003988 | 9 |
| PLTR | 4.36% | 0.02% | 1.66% | 0.004972 | 10 |
| LRCX | 3.13% | 0.02% | 1.54% | 0.006447 | 11 |
| INTC | 2.43% | 0.02% | 1.49% | 0.008055 | 12 |
| WDC | 6.09% | 0.02% | 1.39% | 0.002994 | 13 |
| STX | 3.41% | 0.01% | 0.81% | 0.003100 | 14 |
Definitions:
Contribution – The weighted impact of a stock’s return on the overall index move
(weight × return). This reflects how much each stock actually moved the index.
Share – The proportion of total index movement attributable to a given stock.
Higher values indicate outsized influence relative to peers.
Impact Efficiency – The ratio of contribution to return, highlighting how effectively
a stock’s price move translates into index impact (primarily driven by index weight).
