請問有無網址可揾到美國道指期貨資料??

try this for Dow Jones http://www.nyse.com/
try this for NASDAQ http://www.nasdaq.com/
try this for S & P http://www2.standardandpoors.com/portal/site/sp/en/us/page.family/indices_ei_gbl/2,3,2,1,0,0,0,0,0,0,0,0,0,0,0,0.html

According to website of BLOOMBERG:
INDEX PROFILE

The Dow Jones Industrial Average is a price-weighted average of 30 blue-chip stocks that are generally the leaders in their industry. It has been a widely followed indicator of the stock market since October 1, 1928