The CBOE Put/Write T-W Index is a benchmark index designed to track the performance of a hypothetical short put strategy. CBOE introduced the CBOE S&P 500 PutWrite T-W Index on July 3, 2014. The PWT Index replicates the methodology used to calculate the PUT Index, with one exception. That is, on each roll date the SPX puts are deemed to be sold at the Ptwap, a price equal to the time-weighted average of reported bid prices, of the selected SPX put option beginning at 11:30 a.m. ET and ending at 12:00 p.m. ET. Accordingly, Ptwap is used in place of the Pvwap on PWT roll dates. CBOE has not calculated a separate series of historical values for the PWT Index prior to July 3, 2014. Rather, historical values for the PWT Index prior to July 3, 2014, may be considered the same as PUT Index values. The Index is unmanaged.
The CBOE S&P 500 Buy-Write Index is an index designed to track the performance of a hypothetical covered call strategy on the S&P 500 Index. The Index is unmanaged.
The S&P 500 Index consists of 500 widely held common stocks. This unmanaged Index is a total return index with dividends reinvested.
One cannot invest directly in an index.
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