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 S&P 500Â® index option contract has an underlying value that is equal to the full value of the level of the S&P 500 index. The S&P 500Â® index option trades under the symbol of SPX and has a contract multiplier of $100.ow to Trade S&P 500 Index Options. If you are bullish on the S&P 500, you can profit from a rise in its value by buying S&P 500Â® (SPX) call options. On the other hand, if you believe that the S&P 500 index is poised to fall, then SPX put options should be purchased instead.