Spy | a complete spdr s&p 500 etf trust exchange traded fund overview by marketwatch View the latest etf prices and news for better etf investing. (also known as mid price) the price between the best price of the sellers for a trading unit of a given security and the best price of the buyer of a trading unit of a given security. Check spy stock price for spdr® s&p 500 etf trust, review total assets, see historical growth, and review the analyst rating from morningstar.
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