By Bret Kenwell There’s a trade to be had as Carnival Cruise stock breaks below the 2020 covid lows. Carnival Cruise (CCL) – Get Carnival Corporation Report reported earnings before the open on Friday and the results weren’t that inspiring. The stock is down 20% at last check, although it’s off the session low, which was barely above $7. Carnival stock is giving Nike (NKE) – Get Nike Inc. Report a run for its money today, as the athletic-gear provider is down 12% on disappointing earnings — here’s the strong support zone we highlighted yesterday. For the third quarter, Carnival reported top- a…