BOSTON ( TheStreet) -- Here are three critical rating changes from TheStreet's stock model.4. The model downgraded electricity provider Edison International ( EIX) to "hold." The numbers: Fourth-quarter profit decreased 8% to $212 million, or 65 cents a share, as revenue declined 5.5% to $3.1 billion. Edison International's operating margin remained steady at 14%. It holds $1.7 billion of cash and $11 billion of debt. The stock: Edison International has gained 31% during the past year, underperforming U.S. indices. The stock trades at a price-to-projected-earnings ratio of 10. Its PEG ratio, a measure of value relative to growth, of 0.5 reflects a 72% discount to the industry average. A PEG ratio below 1 indicates cheap shares. 3. The model downgraded industrial machine maker Eaton Corp. ( ETN) to "hold." The numbers: Fourth-quarter profit increased 29% to $211 million, or $1.25 a share, as revenue fell 10% to $3.1 billion. Eaton's operating margin expanded from 4.7% to 6.4%. The company holds $773 million of cash and $3.5 billion of debt. The stock: Eaton shares have more than doubled during the past year, beating major benchmarks. The stock sells for a price-to-projected-earnings ratio of 13, a discount to peers. Its PEG ratio of 0.4 represents a 61% discount to the industry average.