The day-to-day and intraday market swings over the past six weeks have been absolutely ferocious. There really hasn’t been a big aggregate change in market levels since the middle of February (down a bit), but that modest overall decline masks a ton of ups and downs along the way, particularly over the past two weeks. If I were a betting man (and I am), my large wager would be that anyone running a tactical strategy, discretionary or systematic alike, has been whipsawed in an ugly fashion. These are the times that try traders’ souls.