BOSTON ( TheStreet) -- Here are three important ratings changes from TheStreet's quantitative stock model, which evaluates fundamentals and performance.3. The model upgraded food retailer Whole Foods Market ( WFMI) to "buy." Quarter: Fiscal first-quarter profit increased 71% to $55 million, or 32 cents a share, as revenue gained 7% to $2.6 billion. The operating margin inched up from 3.2% to 3.9%. Whole Foods Market holds $570 million of cash and $734 million of debt. Stock: Whole Foods Market has soared 133% in the past year, outperforming major U.S. indices. The stock trades at a PEG ratio, a measure of value relative to expected long-term growth, of 0.8. A PEG ratio below 1 signifies cheap shares. Consensus: Of analysts covering Whole Foods Market, five advise purchasing shares, 14 recommend holding and one suggests selling them. RBC Capital Markets expects the stock to advance 9% to $39. JPMorgan is also bullish on the stock. 2.The model upgraded European investment bank Deutsche Bank ( DB) to "hold." Quarter: Deutsche swung to a fourth-quarter profit of $1.8 billion, or $2.69, from a loss of $6.7 billion, or $12.14, a year earlier. Revenue grew 32% to $10 billion. Margins climbed into positive territory. A 6.3 debt-to-equity ratio reflects excessive leverage. Stock: Deutsche Bank has nearly doubled in the past 12 months, outpacing benchmarks. The stock sells for a price-to-projected-earnings ratio of 12 and a price-to-book ratio of 0.9, 37% and 55% discounts to peer-group averages. Consensus: Of firms following Deutsche Bank, 25, or 52%, rate its stock "buy", 18 rate it "hold" and five rank it "sell." MF Global projects a share price of $114, implying a 55% upside. Keefe, Bruyette & Woods expects the stock to outperform.