Grocery-chain stocks were mixed Tuesday as investors digested the latest retail data.The Commerce Department said Tuesday that retail sales fell 1.1% in March, which according to The Associated Press is the largest decline in three months. Analysts had predicted a 0.3% uptick. The report did nothing to help retailers like Wal-Mart ( WMT), which dropped 0.8% to close at $51.12 Tuesday, or Costco ( COST), which fell 2.3% to $45.35. Among other losers: BJ's Wholesale Club ( BJ), which announced it would begin accepting government-issued food stamp benefits via Electronic Benefit Transfer payments at all of its 180 stores, fell 4.8% to $30.30. Whole Foods ( WFMI) fell 2.5% to $17.94. Safeway ( SWY) fell 2% to $19.72. Supervalu ( SVU) fell 0.4% to $14.10. Great Atlantic & Pacific Tea ( GAP) fell 5.3% to $6.21. Two stocks defied gravity, however. Kroger ( KR) shares rose 1.4% to $20.80. And Winn Dixie ( WINN) rose 1.2% to $9.65.