You cannot find today's stock performance in a static article
Stock prices change throughout each trading day — sometimes every few seconds — so any article that lists specific prices or performance numbers is outdated by the time you read it. Instead of looking for today's numbers here, you need a live source that updates in real time: a financial website, a brokerage app, or a market data service.
The most widely used free sources are Yahoo Finance, Google Finance, and MarketWatch. Each shows the current price of individual stocks, major indexes like the S&P 500 and Nasdaq, and the percentage change since the market opened. If you own stocks through a brokerage account — whether that is Fidelity, Charles Schwab, Vanguard, or another firm — your account dashboard shows your holdings and their current value.
This article explains what you are looking at when you check those live sources, what the different numbers mean, and how to find the specific information you need.
Key Takeaways
- Stock prices update continuously during market hours (9:30 a.m. to 4 p.m. Eastern time on weekdays), so you need a live source like Yahoo Finance or your brokerage app, not an article.
- The percentage change shown next to a stock price tells you how much it has moved since the previous day's close, not whether it is a good investment.
- Major indexes like the S&P 500 and Nasdaq give you a snapshot of overall market direction, but individual stocks often move differently than the broader market.
- Your brokerage account shows the current value of stocks you own, including gains or losses from your purchase price, updated throughout the trading day.
- After-hours trading (4 p.m. to 8 p.m. Eastern) shows price movement outside regular hours, but with much lower trading volume and wider price swings.
How to read the numbers on a stock price page
When you look up a stock, you see the current price, the change since yesterday's close, and the percentage change. The price is what one share costs right now. The change is the dollar amount it has moved since the market closed the previous day. The percentage is that same move expressed as a percent of yesterday's closing price.
For example, if a stock closed yesterday at $100 and is trading at $102 now, the change is +$2 and the percentage change is +2%. That percentage is useful because it lets you compare the movement of a $20 stock that moved $1 (also +5%) to a $200 stock that moved $10 (+5%) — both moved the same percentage, even though the dollar amounts look different.
You will also see a high and low for the day — the highest and lowest prices that stock has traded at since the market opened this morning. The 52-week high and low show the highest and lowest prices over the past year, which gives you context for whether today's price is near the top, bottom, or middle of its recent range.
What the major indexes tell you about overall market direction
The S&P 500, Nasdaq Composite, and Dow Jones Industrial Average are the three most commonly cited indexes. Each one is a basket of stocks designed to represent a slice of the market. The S&P 500 tracks 500 large U.S. companies. The Nasdaq Composite includes about 3,000 stocks, with a heavy weight toward technology companies. The Dow tracks 30 large, established companies.
When you hear "the market is up" or "the market is down," people are usually referring to one of these three indexes. If the S&P 500 is up 1.5% today, that means the average movement of those 500 stocks, weighted by their size, is up 1.5%. This gives you a sense of whether stocks overall are moving up or down, but it does not tell you how any individual stock is performing — a stock can be down while the index is up, or vice versa.
The percentage change for an index works the same way as for an individual stock: it shows the move since the previous day's close. You can also see the year-to-date change, which shows how the index has performed since January 1 of the current year.
The difference between regular trading hours and after-hours trading
The regular U.S. stock market is open from 9:30 a.m. to 4 p.m. Eastern time on weekdays when the market is not closed for a holiday. Most trading volume happens during these hours, and the prices you see are the most reliable.
After-hours trading runs from 4 p.m. to 8 p.m. Eastern. During this window, prices can move significantly, but the volume of trades is much lower. That means a price swing can happen on very few shares, and the bid-ask spread — the gap between what buyers are willing to pay and what sellers are asking — is often wider. If you see a stock price has moved sharply after 4 p.m., be cautious about assuming that is the "real" price; it may reverse when regular trading opens the next morning.
Pre-market trading runs from 4 a.m. to 9:30 a.m. Eastern and follows the same pattern: lower volume, wider spreads, and prices that may not hold once the regular market opens.
How to find stock information for companies you own or are watching
If you own stocks through a brokerage, your account dashboard is the fastest place to check. Log into your account and look for a "Portfolio" or "Holdings" section. You will see each stock you own, its current price, the number of shares you hold, the total value of that position, and your gain or loss from your purchase price.
If you want to look up a stock you do not own, search for the company name or ticker symbol on Yahoo Finance, Google Finance, or MarketWatch. The ticker symbol is a one- to five-letter code — Apple is AAPL, Microsoft is MSFT, Tesla is TSLA. Typing the ticker into any of these sites takes you directly to the stock's page.
Many financial websites also let you set up a watchlist — a personal list of stocks you want to track without owning them. This is useful if you are researching companies before deciding whether to buy.
Why today's price alone does not tell you much
A stock being up or down today is normal market movement. Individual stocks move up and down every single day based on trading activity, news, earnings reports, and shifts in investor sentiment. A stock down 3% today might be up 15% over the past month, or down 40% over the past year.
If you are trying to decide whether to buy or sell a stock, looking at today's price is not useful. You need to understand why you own it (or why you are considering buying it), what the company does, what its financial health looks like, and what your investment timeline is. Today's move is just noise unless it is tied to actual news about the company.
If you own a stock and it drops sharply, resist the urge to sell when ready just because of the one-day move. If you sold based on every daily fluctuation, you would be trading constantly and paying fees and taxes on every transaction. Long-term investors typically ignore daily price swings and focus on whether their reasons for owning the stock have changed.
How to set up alerts so you do not have to check constantly
Most brokerages and financial websites let you set price alerts. You choose a stock and a price level, and the service sends you a notification — usually by email or app notification — when the stock reaches that price. This way you do not have to check the market every hour.
You can set an alert for a stock you own if it drops below a certain price (a signal to review whether you still want to hold it) or for a stock you are watching if it reaches a price you think is attractive to buy. Be realistic about the price you choose — if you set an alert for a $100 stock to notify you when it hits $99, you will get alerts constantly on normal daily movement.
Your brokerage app settings usually have an "Alerts" or "Notifications" section where you can add these. Check the settings to make sure you are getting notifications the way you prefer — some people want email, others want app notifications only.
Frequently Asked Questions
Where do I find the stock market news that explains why a stock moved today?
Yahoo Finance, MarketWatch, and CNBC all publish news articles tied to individual stocks. When you look up a stock on Yahoo Finance, scroll down and you will see a "News" section with recent articles about that company. If a stock moved significantly, there is usually a news story explaining why — earnings miss, product announcement, regulatory change, or analyst rating change.
What does it mean when a stock is "halted"?
A trading halt is a temporary pause in trading, usually triggered when a stock moves more than a certain percentage in a short time or when the company is about to release major news. Halts last a few minutes to a few hours and are designed to prevent panic selling or buying. You will see a notification on the stock's page if a halt is in effect.
Can I buy or sell stocks after 4 p.m. when the regular market closes?
Yes, if your brokerage offers after-hours trading. However, prices are less reliable because volume is lower, spreads are wider, and fewer buyers and sellers are active. Most individual investors stick to regular market hours (9:30 a.m. to 4 p.m. Eastern) for buying and selling.
Why does my brokerage show a different price than Yahoo Finance?
The difference is usually a few seconds of delay. Yahoo Finance and other public websites have a slight delay in their data feeds, while your brokerage shows you real-time prices because you are logged into your account. The prices should be nearly identical, but if you see a big difference, refresh your browser or app.
Is a stock down 10% today a good time to buy?
Not necessarily. A one-day drop tells you the price has moved, not whether the stock is undervalued or overvalued. You would need to understand the reason for the drop, the company's financial health, and whether the price aligns with what you think the company is worth. A drop can be a buying opportunity or a sign of a real problem — the price move alone does not tell you which.