Hewitt EnnisKnupp, an investment consulting company, did an analysis of 25 years of buy-write index option writing (i.e. covered calls) from 1986 to 2012.
The results show that the strategy of writing 1-month at-the-money covered calls on the S&P 500 lowers portfolio volatility and meets or exceeds returns of comparable indices.
The report shows returns per month and standard deviations (i.e. volatility) over time, and mentions how the strategy works in rising, sideways, and down markets, among other commentary and data. To read the full report, see BXM Performance Review.
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