Standard & Poor has downgraded Barnes & Noble stock from “hold” to “strong sell”, noting that B&N shares “have risen about 40% over the past 3 months and are now trading well above” S&P’s target price. The firm also expects further weakening in sales over the next fiscal year and is “also concerned by the long-term trend of declining adult readership levels.” B&N’s Board of Directors also declared a quarterly cash dividend of $0.25 per share, payable on March 31 to stockholders of record at the close of business on March 10.Business Week