Yahoo Finance
The all purpose site with lots of good current information
on Companies.

Stockcharts.com/
Good site for charting stocks performance. Great
Technical Indicators easily embeddable.

Cboe.com
Options trading exchange with all kinds of great information
on Options trading.

Marketwatch's52 week high low list
Site with quick summary of stocks trading at 52 wk
highs and lows.

Nasdaq Short Interest
Lookup for Short Interest in Nasdaq stocks.

Nasdaq ETF Information and Screener
Nasdaq's ETF compare tool. You can see the ETFs details
and search for the ETFs you want to invest in.

Nasdaq pre-market movers, using heatmap
This very cool tool from Nasdaq tells you what's moving
in the pre-market (before the market opens)

Nasdaq after hour movers
Same tool as above, but for after the close. Use it to
see what moves after the market closes.
After market  Volume movers here.

NYSE short interest
NYSE Short interest data.

Nasdaq Unusual volume stocks
Nasdaq Unusual Volume stocks.

NYSE ADR list
Directory of ADR's, foreign stocks listed on the NYSE.

NYSE Research Staff Publications
A selection of good papers on equity markets,
trading, and related stuff by NYSE research staff.

Amex Short Interest Data
Amex short interest data.

http://www.cme.com/trading/dta/del/globex.html
CME's Futures values for major indices, 24 hours a day.
Nice to see this when the market is closed.

MSN Money's Screener
By far the best Free stock screener on the Net.

Thebulliondesk.com/
Monitoring Gold and Precious metals real time.

PHLX Options Expiration Calendar
Downloadable Options Expiration calendar.Stick it up on your
wall somewhere,  you will need this (PDF format).

US Stock Market Holiday calendar
Nasdaq (and NYSE) stock market holidays for this year.

CBOE's intraday put call ratio
Cboe's intraday put call ratio, very useful to see overall
market sentiment intraday and short term.

S&P Credit Rating News Releases
Company and Country Credit Rating News
Releases by Standard and Poors.

www.tc2000.com/
Powerful software for setting up custom stock screens.
Basic software is free.

http://www.investinginbonds.com/
Bond Market Associations Site provides quick summary
of the Government, Corporate and other bond markets.

US Department of Labor
US Department of Labor's Bureau of Labor Statistics
site. Employment report is published here.

US Census Bureau
US Housing Starts from the Census Bureau.

www.kitco.com/charts/
Quick charts of various metals.

www.agedwards.com/
AG Edwards offers daily bond market commentary
here.

Money Market Account Rates
Money market rates in your city/state.

www.investors.com/
Investor Business Daily's Flagship site always
has some great stuff for traders.

www.rothirainvesting.com
Comprehensive site for everything about Roth IRA
Investing, advantages, disadvantages, comparison, etc.

Kiplinger.com's Mutual Fund finder
Mutual Fund finder with a great set of input variations.

CNN's Millionaire Tool
Fun calculator from CNN to see if and when you will
become a Millionaire.

http://www.latinfinance.com/
Investing in Latin America.

http://www.amm.com/
News and views on Metals Trading throughout
the world.

http://www.traderinterviews.com/
Interviewing top traders and investors.

http://www.ivolatility.com/rank.j
Ranks stocks based on changes in Implied Volatility
of the options.

http://www.fibonaccitrader.com/
Trading system by Robert Krausz. 30 day free trial
offered, so you can see if it works for you.

http://www.elliottwave.com/
Site of the "wave theory" traders, pioneered by Elliot,
hence called Elliot wave theory trading.

http://www.hoadley.net/options/probgraphs.aspx?
Stock price distribution using Log-normal assumptions.
Input volatility and basic info and get the distribution of the
stock.

http://www.sec.gov/investor/pubs/daytips.htm
The US Government agency's advisory on hazardous
consequences of day trading. Fraud advisory here.

Technical Analysis-Japanese Candesticks basics
A nice introduction to Japanese Candlesticks
and their use in trading.

Technical Analysis-Japanese Candlesticks
Another site discussing Japanese Candlesticks.

Technical Analysis-Bollinger Bands
John Bollinger's site, where you can learn about
Bollinger Bands.

Technical Analysis-Bollinger Bands
Another good discussion of Bollinger Bands.

Lipper/Reuters top performing funds
Lists the top performing funds-1month, 1 year, etc.
Use this to see what the smart money is doing.

http://www.socialfunds.com/
Site for information on socially responsible investing
and associated funds.

ABN Amro's Trading Simulation
A real life type trading simulation from ABN Amro,
for it's employees and now open to the public.

For a brief intro and tips for investing/trading the stock market, click here.