Software stock BILL Holdings Inc (NYSE:BILL) was last seen up 0.6% at $52.88 after an upgrade from Truist Securities to "buy" from "hold," with a price-target hike to $63 from $50. The firm cited potential growth with help from new activist shareholders Elliott Management and Starboard, just over a week after Wolfe Research upgraded BILL to "outperform."There is still plenty of room for upgrades, however. Data from before today's adjustments shows 12 of the 26 analysts in coverage still carrying a "hold" ra ...