Yes, spy and spx generally move together as they both track the performance of the SP 500 index.
The spy does not follow the SPX.
spx
SPX or $SPX is the symbol you would use on the Scottrade system for the S&P 500 Index.
The key differences between SPX and ES are that SPX is the symbol for the SP 500 index, which represents 500 large-cap U.S. companies, while ES is the symbol for E-mini SP 500 futures contract, which is a derivative financial instrument based on the SP 500 index. SPX is an index that tracks the performance of the underlying stocks, while ES is a futures contract that allows investors to speculate on the future price movements of the index.
ES and SPX are both stock market indexes, but they track different things. ES, or E-mini SP 500, follows the performance of the SP 500 index futures contracts. SPX, on the other hand, is the symbol for the SP 500 index itself, which represents the performance of 500 large-cap U.S. companies. In simple terms, ES is a futures contract based on the SP 500 index, while SPX is the actual index that measures the performance of the stock market.
The spy does not follow the SPX.
SPX Corporation was created in 1911.
The population of SPX Corporation is 15,000.
SPX
The symbol for SPX Corporation in the NYSE is: SPW.
spx
As of July 2014, the market cap for SPX Corporation (SPW) is $4,678,128,083.85.
Novell owns the IPX/SPX protocol.
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SPX or $SPX is the symbol you would use on the Scottrade system for the S&P 500 Index.