Here is an update for the last 5 trading days.
50/50% allocation gives a 2% gain in 5 days.
Last 3 months:
About 6% gain in the last 3 months.
If you buy on dips and sell on rallies, you could improve your results.
I have been thinking that it might be more beneficial to short the Russell 2000 index since that has run up the most recently. For ultra short: TWA will give you good results.