1, different concepts.
The Standard & Poor's 500 Index is a stock index that records 500 listed companies in the United States. The stock index is created and maintained by Standard & Poor's Company. All companies covered by the Standard & Poor's 500 Index are listed companies traded on major American exchanges, such as new york Stock Exchange and Nasdaq.
Nasdaq, also known as Nasdaq and American Science and Technology Index, is the English abbreviation of the name of the automatic quotation system created by the National Association of Securities Dealers in 1968. Nasdaq is characterized by collecting and publishing quotations from securities companies that trade unlisted shares over the counter.
It has now become one of the largest stock exchange markets in the world. At present, there are more than 5,200 listed companies. Nasdaq is the first stock market in the world to adopt electronic trading, with more than 260,000 computer sales terminals in 55 countries and regions.
2. Different risks
NASDAQ 100 index is the main index of NASDAQ, and its 100 constituent stocks all have the characteristics of high technology, high growth and non-finance, which can be said to be the representative of American technology stocks. The 500 index contains more companies, so the risks are more dispersed and can reflect broader market changes.
3. Different directions
Nasdaq 100 is dominated by technology network stocks, such as Apple and Google, among which the S&P 500 has a wider coverage and is relatively average in the industry. There is also a Dow Jones industrial average, which is dominated by industry and is the three major stock indexes in the United States.
Extended data:
S&P 500 Index Range
S&P and other foreign stock indexes are only applicable to the stock exchange market, not to mention that there is no linkage between China stock market and foreign stock markets. Considerations on the reduction of S&P 500 stocks;
1, merge. After the merger of companies, the merged companies are naturally excluded from the index.
2. bankruptcy. The company declared bankruptcy.
3. transformation. Company transformation is meaningless in the original industrial classification.
4. Not representative. Replaced by other companies in the same industry.
References:
Baidu Encyclopedia-S&P 500 Index