Cronos stock just went up -- a lot. Maybe it's time to sell?Cronos Group (CRON 12.63%) stock jumped 9.4% through 11:30 a.m. ET Tuesday after beating Wall Street forecasts for Q3 earnings this morning.Heading into the report, analysts expected Cronos to do $24.8 million in sales in Q3, and to lose money -- $0.01 per share. Cronos delivered positive surprises on both the top and bottom lines, however, with sales approaching $34.3 million and a profit of $0.02 per share. Cronos' Q3 earningsSales surged 38% yea ...