Recently I posted a swing trade system I call “Hitail” (read about here). It had initially used in-sample and out-of-sample data that was subject to survivorship bias. I’ve since made some minor tweaks to the system (most notably an anti-gap filter), and then a final run on survivor-bias-free data for the out-of-sample period. If you had looked at it before, take another look. The system still performs decently but with a caveat.