Session brief · Tuesday, August 18, 2026 close
Stocks slipped. 2,874 fell, 1,791 rose — and energy bucked the tape.
6 of 11 sectors finished higher. Energy led at +1.36%; Materials lagged at -1.80%.
The biggest liquid gainer was Super League Enterprise (SLE), up 82.1% in technology.
Among benchmarks, DIA (Dow 30) did best at -0.24% and QQQ (Nasdaq-100) did worst at -1.69%.
Market breadth
4,786 common stocks · previous-session close▲ 1,791 advancing (37.4%)121 unchanged▼ 2,874 declining (60.1%)
Sectors, cap-weighted
| Sector | Change | Rising | Falling |
|---|---|---|---|
| Energy | +1.36% | 60 | 60 |
| Consumer Staples | +1.30% | 65 | 44 |
| Healthcare | +1.28% | 406 | 389 |
| Communication Services | +0.83% | 49 | 68 |
| Utilities | +0.32% | 55 | 57 |
| Financials | +0.04% | 249 | 408 |
| Consumer Discretionary | −0.37% | 175 | 351 |
| Real Estate | −0.43% | 82 | 128 |
| Industrials | −0.85% | 110 | 284 |
| Technology | −1.59% | 226 | 359 |
| Materials | −1.80% | 42 | 196 |
Top gainers
Top losers
Most active
Common stocks · $2+ · 500K+ shares · $100M+ market cap · previous-session close. Changes compare the Aug 18, 2026 close with Aug 17, 2026; stocks with unexplained price jumps are excluded.