Session brief · Monday, May 18, 2026 close
Stocks edged lower. 2,572 rose, 2,252 fell — and energy bucked the tape.
8 of 11 sectors finished higher. Energy led at +1.94%; Materials lagged at -0.97%.
The biggest liquid gainer was Huachen AI Parking Management Technology Holding Co. (HCAI), up 98.6%.
Among benchmarks, DIA (Dow 30) did best at +0.33% and IWM (Russell 2000) did worst at -0.59%.
Market breadth
4,937 common stocks · previous-session close▲ 2,572 advancing (52.1%)113 unchanged▼ 2,252 declining (45.6%)
Sectors, cap-weighted
| Sector | Change | Rising | Falling |
|---|---|---|---|
| Energy | +1.94% | 93 | 30 |
| Communication Services | +1.71% | 83 | 41 |
| Real Estate | +1.16% | 177 | 38 |
| Consumer Staples | +0.77% | 65 | 48 |
| Financials | +0.73% | 518 | 187 |
| Utilities | +0.43% | 80 | 35 |
| Consumer Discretionary | +0.33% | 290 | 242 |
| Industrials | +0.19% | 213 | 187 |
| Technology | −0.61% | 320 | 279 |
| Healthcare | −0.76% | 277 | 547 |
| Materials | −0.97% | 104 | 134 |
Top gainers
HCAIHuachen AI Parking Management Technology Holding Co.Unclassified$11.00+98.6%GCTSGCT Semiconductor HoldingTechnology$2.58+41.0%AIIORobo.aiUnclassified$5.60+39.3%HIVEHIVE Digital TechnologiesFinancials$3.46+28.6%RAMPLiveRamp HoldingsTechnology$37.77+27.3%AMPGAMPLITECH GROUP INC. COMTechnology$3.70+25.4%
Top losers
Most active
Common stocks · $2+ · 500K+ shares · $100M+ market cap · previous-session close. Changes compare the May 18, 2026 close with May 15, 2026; stocks with unexplained price jumps are excluded.