These stocks are poised for a comeback.As the major market indices hit new highs, investors can still find undervalued stocks set up for attractive returns. We'll look at two discounted growth stocks trading between 60% to 80% below their previous peaks. These businesses are experiencing growing demand for their services and trade at low valuations relative to expected earnings. 1. CarnivalDespite rising 62% over the last year, Carnival (CCL -1.04%) stock remains deeply undervalued and trading 60% off its a ...