The SPDR S&P 500 trust is an exchange-traded fund which trades on the NYSE Arca under the symbol. SPDR is an acronym for the Standard & Poor's Depositary Receipts, the former name of the ETF. It is designed to track the S&P 500 stock market index. This fund is the largest ETF in the world. SPDR is a trademark of Standard and Poor's Financial Services LLC, a subsidiary of S&P Global. The ETF's CUSIP is 78462F103 and its ISIN is US78462F1030. The fund has a net expense ratio of 0.0945%. The value of one share of the ETF is worth approximately 1/10 of the cash S&P 500's current level. On December 1, 2021, the 30-Day average daily volume range for the past 5 years was 82.45 million shares, making it the ETF with the largest trading volume. The sponsor is SPDR Services LLC, a wholly owned subsidiary of American Stock Exchange LLC. Dividends are distributed quarterly, and are based on the accumulated stock dividends held in trust, less any expenses of the trust. The trust seeks to provide investment results that, before expenses, correspond generally to the price and yield performance of the S&P 500 index. Wikipedia