Stocks are mostly higher at midday on Friday and a weekly gain seems to be in the cards. Retail sales declined more than expected in January, off 0.9% compared to the 0.2% decline economists expected.

Super Micro Computer (NASDAQ: SMCI) stock is posting another day of big gains in Friday's trading. The server specialist's share price was up 9.5% as of 1:40 p.m. ET and had been up as much as 12.3% ...