Signet Jewelers Ltd (NYSE:SIG) stock is up 23.7% to trade at 59.83atlastcheck,afterthecompanybeatfourth−quarterearningsandrevenueestimates.Thepreciousjewelryretaileralsoissuedastrongcurrent−quarterforecast,andannouncedadividendhikeof1052 level on a bounce off its March 13, four-year low of $45.55. Shares are trimming their 42.4% year-over-year deficit, and earlier conquere ...