Top 10 Contributors
S&P 500: 7437.63 | 📈 Up (1.72%)
Market Structure Score
71/100
Healthy Structure
🔁 Regime shift: Weak / Risk-Off → Narrow / Fragile
Headline index performance continued to rely disproportionately on a concentrated leadership cohort, suggesting underlying strength remained narrower than headline returns implied. Most internal measures were broadly consistent with this assessment, although some divergence remains beneath the surface.
Most internal measures remain supportive of the prevailing trend, although enough divergence persists to justify a measured rather than aggressive level of conviction. The Market Structure Score of 71/100 reflects moderate confidence in this assessment.
⬥ 149 of 502 stocks advanced (▲29.7%)
⬥ 352 stocks declined (▼70.1%)
⬥ 1 stock unchanged
⬥ Advancers clearly outnumbered Decliners.
⬥ Leadership remained concentrated.
Leadership continued to rotate across sectors, indicating investors were reallocating capital without abandoning risk exposure. Rotation of this nature is often consistent with a healthy bull market provided participation remains broad.
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. Should these conditions deteriorate further, confidence in the current market assessment would likely weaken.
The market is approaching an important inflection point. Broader participation and firmer leadership would shift the balance toward a more constructive outlook, whereas weaker breadth would increase the probability of renewed internal deterioration.
The weight of the internal evidence continues to support a narrow momentum leadership market environment with moderate 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.
▶ 📈 Cap-weighted leadership confirmed the advance.
▶ ⚠️ Leadership became highly concentrated in a handful of mega-cap stocks.
▶ 🔄 Leadership rotation accelerated.
▶ ⚠️ Elevated dispersion reflects increasingly uneven market behavior.
▶ 💪 Individual stock moves carried above-average conviction.
▶ ⚠️ Large-cap leadership outpaced the broader market.
▶ 💹 Winning stocks outperformed losers by a comfortable margin.
▶ ⭐ Performance was boosted by a handful of outsized winners.
Top Contributors (>0.01%)
| Ticker | Return | Contribution | Share | Impact_Efficiency | Rank |
|---|---|---|---|---|---|
| MSFT | 14.99% | 0.73% | 17.95% | 0.048795 | 1 |
| NVDA | 3.21% | 0.26% | 6.42% | 0.081569 | 2 |
| MU | 13.02% | 0.22% | 5.50% | 0.017208 | 3 |
| AMZN | 4.50% | 0.17% | 4.20% | 0.038059 | 4 |
| AMD | 12.84% | 0.17% | 4.13% | 0.013094 | 5 |
| LRCX | 20.69% | 0.13% | 3.27% | 0.006447 | 6 |
| AVGO | 4.29% | 0.13% | 3.21% | 0.030490 | 7 |
| INTC | 11.82% | 0.10% | 2.34% | 0.008055 | 8 |
| AMAT | 15.09% | 0.09% | 2.26% | 0.006111 | 9 |
| SNDK | 19.91% | 0.08% | 1.95% | 0.003988 | 10 |
| TSLA | 3.18% | 0.06% | 1.41% | 0.018065 | 11 |
| WDC | 16.70% | 0.05% | 1.23% | 0.002994 | 12 |
| STX | 16.13% | 0.05% | 1.23% | 0.003100 | 13 |
| ORCL | 7.96% | 0.05% | 1.20% | 0.006150 | 14 |
| GEV | 9.26% | 0.04% | 0.91% | 0.003988 | 15 |
| KLAC | 8.26% | 0.04% | 0.87% | 0.004289 | 16 |
| PWR | 16.63% | 0.03% | 0.67% | 0.001645 | 17 |
| CAT | 4.07% | 0.03% | 0.67% | 0.006719 | 18 |
| ANET | 8.03% | 0.02% | 0.52% | 0.002632 | 19 |
| DELL | 10.49% | 0.02% | 0.50% | 0.001924 | 20 |
| TXN | 4.21% | 0.02% | 0.44% | 0.004256 | 21 |
| GLW | 7.20% | 0.02% | 0.42% | 0.002368 | 22 |
| ETN | 6.71% | 0.02% | 0.41% | 0.002495 | 23 |
| LITE | 14.80% | 0.02% | 0.38% | 0.001037 | 24 |
| GS | 2.91% | 0.01% | 0.36% | 0.005032 | 25 |
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).
