Not just recently, it's been known for a while. The author actually confirmed it: > Almost every instrument is mean-reverting on short timelines and trending o

Not just recently, it's been known for a while. The author actually confirmed it: > Almost every instrument is mean-reverting on short timelines and trending on longer timelines. This has held true across most of the data that I tested. (But momentum isn't the only thing that appears to work.)