Inogen One G3 Portable Oxygen Concentrator (16 cell) $2,615.00 msrp $2,995.00 Save 12% plus FREE shipping. The Inogen One G3 (16-Cell) delivers the independence of a portable oxygen concentrator in one of the smallest, lightest, and quietest packages available to the oxygen user today.
How is the value of the S&P 500 calculated? The S&P 500 is a U.S.market index that gives investors an idea of the overall movement in the U.S.equity market. The value of the S&P 500 constantly changes based on the movement of 500 underlying stocks. The index is computed by weighted average market capitalization.
The Standard & Poor's 500 Index (S&P 500) is an index of 500 of the largest U.S. companies, listed on the New York Stock Exchange or NASDAQ, selected by the Standard & Poor's Index Committee based on market capitalization. The S&P 500 Index is a widely recognized barometer of the U.S. equity market.