Daily Report – 2026-08-13


S&P 500 Report

Top 10 Contributors


S&P 500: 7798.99 | πŸ“ˆ Up (0.69%)

Market Structure Score


63/100

Neutral Structure
Market internals are generally balanced without a decisive directional signal.
Market Summary
Executive Summary

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.

Market Character

The internal backdrop remains balanced, with improving conditions offset by pockets of continued weakness. The Market Structure Score of 63/100 reflects low confidence in this assessment.

Participation

318 of 502 stocks advanced (β–²63.3%)
181 stocks declined (β–Ό36.1%)
3 stocks unchanged
Advancers clearly outnumbered Decliners.
Leadership was broadly distributed.

Overall, participation was mixed, reducing confidence in the durability of today’s advance.

Leadership

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.

Risk Assessment

Rapid leadership rotation suggests institutional conviction remains fluid. Trading conviction remains below recent norms. Should these conditions deteriorate further, confidence in the current market assessment would likely weaken.

Outlook

Meaningful improvement in participation and internal confirmation will be needed before confidence can recover. Failure to improve would leave the market vulnerable to additional weakness.

Bottom Line

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

▶ πŸ“ˆ Cap-weighted leadership confirmed the advance.

▶ βœ… Leadership was broadly distributed across the market.

▶ πŸš€ Participation expanded sharply from the previous session.

▶ πŸ’Ή 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
MU 4.23% 0.07% 5.18% 0.017208 1
AAPL 1.00% 0.07% 4.97% 0.070144 2
TSLA 3.80% 0.07% 4.89% 0.018065 3
META 2.78% 0.06% 4.17% 0.021070 4
SNDK 13.67% 0.05% 3.88% 0.003988 5
MSFT 0.90% 0.04% 3.14% 0.048795 6
NVDA 0.54% 0.04% 3.13% 0.081569 7
GOOGL 0.64% 0.04% 2.83% 0.062198 8
INTC 3.58% 0.03% 2.05% 0.008055 9
NFLX 5.43% 0.03% 2.04% 0.005287 10
PLTR 4.66% 0.02% 1.65% 0.004972 11
WDC 7.31% 0.02% 1.56% 0.002994 12
LRCX 3.34% 0.02% 1.53% 0.006447 13
STX 4.91% 0.02% 1.08% 0.003100 14
V 1.68% 0.01% 0.99% 0.008265 15
AVGO 0.43% 0.01% 0.92% 0.030490 16
ORCL 1.92% 0.01% 0.84% 0.006150 17
CRM 4.16% 0.01% 0.80% 0.002716 18

Definitions:

Contribution – The weighted impact of a stock’s return on the overall index move
(weight Γ— 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).


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