Stock Market Overview
Track major U.S. stock market indices, explore sector performance across the economy, and access research tools to analyze individual stocks. For today's live market data, movers, and earnings, visit Market Today.
Major Indices
The three primary benchmarks for U.S. equities. The S&P 500 tracks 500 large-cap companies, the Dow Jones follows 30 blue-chip industrials, and the Nasdaq Composite is weighted toward technology.
Sector Performance
All sectors →The market is divided into 11 GICS sectors. Green indicates positive performance, red indicates negative. The intensity reflects the magnitude of the move. Click any sector to see its individual stocks.
Market Tools & Resources
Research and analysis tools to help you make informed investment decisions.
Daily snapshot with breadth, sentiment, gainers, losers, earnings reports, and insider trades.
Filter stocks by market cap, P/E ratio, dividend yield, sector, and price. Export results to CSV.
Side-by-side comparison of up to 8 stocks with price, fundamentals, dividends, and analyst ratings.
Visual treemap of ~470 S&P 500 stocks sized by market cap and colored by daily performance.
Top gainers, losers, and most actively traded stocks ranked by percentage change and volume.
Composite fear & greed index based on breadth, momentum, volatility, and 5 other indicators.
Upcoming and past earnings reports with EPS estimates, actual results, and surprise percentages.
Upcoming ex-dividend dates with yield information. Filter by minimum yield to find income opportunities.
Recent SEC filings of insider buys and sells. Track what executives and directors are doing with their shares.
Key economic events including Fed meetings, jobs reports, CPI releases, and GDP announcements.
Upcoming initial public offerings with expected dates, price ranges, and company details.
Browse the full directory of tracked stocks with price, change, market cap, and sector information.
Largest Companies by Market Cap
View all →The most valuable publicly traded companies. Market capitalization is calculated by multiplying the current share price by the total number of outstanding shares.
Understanding the Stock Market
What Are Stock Indices?
A stock index measures the performance of a group of stocks representing a segment of the market. The S&P 500, for example, includes 500 of the largest U.S. companies and is widely considered the best gauge of the overall U.S. stock market. Index movements are weighted, so larger companies have a bigger impact on the index value.
How to Read Sector Performance
Sector performance shows how different areas of the economy are performing. When technology is up but energy is down, it signals a rotation of capital between industries. Broad green across most sectors typically indicates a risk-on market, while broad red suggests risk-off sentiment. Sector ETFs track each industry group.
Key Metrics Explained
P/E Ratio compares price to earnings — lower may mean undervalued. Market Cap is total company value (price × shares). Dividend Yield is annual dividends as a percentage of price. EPS (earnings per share) shows profitability on a per-share basis.
Market Hours & Trading
U.S. stock markets are open Monday through Friday, 9:30 AM to 4:00 PM Eastern Time. Pre-market trading begins at 4:00 AM and after-hours trading extends to 8:00 PM ET. Markets are closed on federal holidays. Earnings are typically reported before market open (BMO) or after market close (AMC).