Dollar General, Signet fall on weak results; Tiffany gains
NEW YORK — Stocks that moved substantially or traded heavily on Thursday: Dollar General Corp., down $16.18 to $75.61 The dollar-store chain reported results that fell short of analysts’ forecasts. Tiffany & Co., up $4.41 to $73.28 The high-end jewelry retailer reported higher earnings as lower costs offset a decline in sales. Signet Jewelers Ltd.,