Session brief · Thursday, September 17, 2026 close
Stocks rose. 3,076 rose, 1,886 fell — but communication services lagged.
8 of 11 sectors finished higher. Technology led at +1.96%; Communication Services lagged at -1.93%.
The biggest liquid gainer was Paradium.AI (PAAI), up 271.2% in communication services.
Among benchmarks, QQQ (Nasdaq-100) did best at +1.73% and IWM (Russell 2000) did worst at +0.53%.
Market breadth
5,117 common stocks · previous-session close▲ 3,076 advancing (60.1%)155 unchanged▼ 1,886 declining (36.9%)
Sectors, cap-weighted
| Sector | Change | Rising | Falling |
|---|---|---|---|
| Technology | +1.96% | 410 | 205 |
| Healthcare | +1.07% | 562 | 274 |
| Materials | +0.88% | 168 | 80 |
| Consumer Discretionary | +0.84% | 314 | 231 |
| Utilities | +0.72% | 79 | 39 |
| Energy | +0.46% | 69 | 55 |
| Industrials | +0.38% | 230 | 179 |
| Real Estate | +0.35% | 131 | 85 |
| Consumer Staples | −0.09% | 57 | 52 |
| Financials | −0.16% | 399 | 347 |
| Communication Services | −1.93% | 50 | 72 |
Top gainers
Top losers
Most active
Common stocks · $2+ · 500K+ shares · $100M+ market cap · previous-session close. Changes compare the Sep 17, 2026 close with Sep 16, 2026; stocks with unexplained price jumps are excluded.