全球几大股票指数？
1.道琼斯工业平均指数，英文简称Dow Jones Industrial Average， DJIA 由30种不同行业的大型贸易上市公司组成，其历史可以追溯到1896年5月26日，当时它包含11种证券。自那时起该指数不断调整，目前的成分股共有30只公司股票作为样本，包括通用电气、微软及IBM等著名企业，这些公司的总市值约2万亿美元，占标准普尔500成份股总值的70%以上。
从1896年到2004年间，道指的平均年度涨幅为8.2％，但此后就再没有超越这个纪录了。最近一次是2007年10月9日报收9，911点，比最高纪录低了近1/3，在次贷危机中损失惨重。尽管近年来涨幅有限，道琼斯工业平均指数仍然是全世界最有名的股市指标之一，也是人们最喜爱的投机标的。这是因为它的历史十分悠久（至今已涵盖美国经济长达一百多年）且成分股都属大型蓝筹股，因而较能反映整体宏观经济情况；此外由于它是以“平均”计算各行业的指数表现，剔除了股价异常变动带来的影响，因此比较可靠和易于跟踪与分析。
2.标准普尔500指数 S&P 500 is an index of stocks representing 500 companies listed on American stock exchanges that are considered to be the best representation of US economy as a whole， so it has become one of most influential measure for world's financial markets. It was created in March 1957 by Charles Dow， Thomas Edison and George Barr who used data from just twelve industrial averages at first， then added transportation shares later when they realized how important they were for overall market performance because they reflected demand trends better than their counterparts did. The current composition of this index includes 505 components and its average annual growth rate since inception back in 1957 until September 2016 amounted 8，3%; while volatility around yearly highs reached up to 29%， which means significant risks associated with investments into this asset class; however over long term periods (more than ten years) you will notice positive result due to higher earnings growth among portfolio components than what can be expected if only bonds or other safe assets would have been purchased instead these instruments being subject themselves towards economic developments affecting corporations underlying them directly through impact on consumer confidence levels， employment rates etcetera.
S&P 500 comprises large cap stocks with market capitalization greater than $1 billion; moreover every new addition goes though extensive screening process aiming at ensuring adequate diversity within industry groups based upon size parameters defined above rather than geographic distribution across United States regions alone although there definitely is something in common between all constituents – each single company must prove ability show consistent earnings growth over time period