Daily Report – 2026-05-18


S&P 500 Report

Top 10 Contributors


S&P 500: 7403.05 | ๐Ÿ“ˆ Up (0.02%)

Market Structure Score:

1/3
โ€” Weak / Fragile Structure


๐Ÿ” Regime shift: Weak / Risk-Off โ†’ Broad Bull

Market Summary

▶ The market is in a broad-based market move .

▶ Key drivers: MSFT (0.38%), V (2.12%), NFLX (3.02%), COST (2.62%), XOM (1.63%). Top 5 names account for 6.6% of total index movement.

▶ Market breadth: 357 of 502 stocks advanced (โ–ฒ 71.1%) while 142 declined (โ–ผ 28.3%). (3 unchanged)

Market Signals

▶ ๐Ÿš€ Breadth thrust โ€” strong expansion in participation

Top Contributors (>0.01%)

Ticker Return Contribution Share Impact_Efficiency Rank
MSFT 0.38% 0.02% 1.38% 0.051540 1
V 2.12% 0.02% 1.35% 0.009208 2
NFLX 3.02% 0.02% 1.34% 0.006362 3
COST 2.62% 0.02% 1.32% 0.007252 4
XOM 1.63% 0.02% 1.20% 0.010572 5
BRK-B 1.18% 0.02% 1.17% 0.014258 6
MA 2.35% 0.02% 1.14% 0.006997 7
CVX 2.63% 0.02% 1.08% 0.005894 8
JPM 0.98% 0.01% 0.93% 0.013638 9
NOW 8.78% 0.01% 0.93% 0.001520 10
WMT 1.44% 0.01% 0.92% 0.009179 11
ISRG 4.46% 0.01% 0.82% 0.002634 12
AMZN 0.27% 0.01% 0.80% 0.042017 13
BAC 1.85% 0.01% 0.74% 0.005740 14
ABT 4.07% 0.01% 0.73% 0.002595 15
RTX 2.79% 0.01% 0.73% 0.003791 16

Definitions:

Contribution โ€“ The weighted impact of a stockโ€™s return on the overall index move
(weight ร— return). This reflects how much each stock actually moved the index.

Share โ€“ The proportion of total index movement attributable to a given stock.
Higher values indicate outsized influence relative to peers.

Impact Efficiency โ€“ The ratio of contribution to return, highlighting how effectively
a stockโ€™s price move translates into index impact (primarily driven by index weight).


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