Earnings season is about to start winding down, though a handful of retailers are still slated to report next week. Dollar Tree Inc (NASDAQ:DLTR) will announce its fourth-quarter results before the open Wednesday, Mar. 13. Dollar Tree stock closed half of its last eight post-earnings sessions higher, including a 4.4% pop this past November. The security has averaged an 8.9% swing, regardless of direction, over these past two years. This time around, the options pits are pricing in a next-day swing of 10.6%. ...