SPDR S&P 500 ETF (SPY)

The SPDR S&P 500 ETF Trust (SPY) is one of the most actively traded and influential exchange-traded funds in the world and is listed on NYSE Arca under the ticker symbol SPY. This ETF tracks the performance of the S&P 500, an index composed of approximately 500 large publicly listed companies in the United States. Its composition reflects a broad cross-section of the U.S. economy, with leading positions in sectors such as technology, financial services, healthcare, consumer goods, and energy. Due to its scale, liquidity, and sector diversification, SPY is widely used as a core investment and as the primary benchmark for the U.S. equity market. The ETF plays a central role in measuring economic developments, market sentiment, and the performance of U.S. large-cap equities.