When asked why he robbed banks, Willie Sutton famously (if apocryphally) replied: "because that's where the money is." Over the past month, investors could say the same about bank stocks.
"The banks actually look outstanding here on a technical basis," Ross said Thursday on CNBC's "Trading Nation."
On the chart, "we see that nice 12-month base of support, and we see a breakout from that bullish base," he said. And "the financials have actually held that breakout."