Hi Art,
Since you look at calendar biases, you might consider a "week of the month" bias. This is a quote from schaeffersresearch:
"For the bulls, expiration week has proven to be a tailwind. Our theory is that much of this positive price action relates to the expiration of equity and index options (particularly index options), which many investors use as portfolio insurance during uncertain times. Ahead of expiration, those selling the puts short stock futures to hedge their short put positions. However, as expiration approaches, portfolio insurance sellers unwind their short futures positions â behavior that becomes supportive of stocks. In fact, since January 2007, the average return on the SPX during expiration week is 0.45%, compared to average non-expiration week return of -0.11% during this period. In fact, 10 of the 16 expiration weeks since January 2007 have been positive".
I calculate that if you went long 1 SP for each expiration week of the last 16 months, you'd be up $40k.
Since you look at calendar biases, you might consider a "week of the month" bias. This is a quote from schaeffersresearch:
"For the bulls, expiration week has proven to be a tailwind. Our theory is that much of this positive price action relates to the expiration of equity and index options (particularly index options), which many investors use as portfolio insurance during uncertain times. Ahead of expiration, those selling the puts short stock futures to hedge their short put positions. However, as expiration approaches, portfolio insurance sellers unwind their short futures positions â behavior that becomes supportive of stocks. In fact, since January 2007, the average return on the SPX during expiration week is 0.45%, compared to average non-expiration week return of -0.11% during this period. In fact, 10 of the 16 expiration weeks since January 2007 have been positive".
I calculate that if you went long 1 SP for each expiration week of the last 16 months, you'd be up $40k.